2009-04-20 21:37:32 +08:00
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/*
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2009-06-03 05:37:05 +08:00
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* builtin-stat.c
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*
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* Builtin stat command: Give a precise performance counters summary
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* overview about any workload, CPU or specific PID.
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*
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* Sample output:
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2009-04-20 21:37:32 +08:00
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perf stat: Add -d -d and -d -d -d options to show more CPU events
Print even more detailed statistics if requested via perf stat -d:
-d: detailed events, L1 and LLC data cache
-d -d: more detailed events, dTLB and iTLB events
-d -d -d: very detailed events, adding prefetch events
Full output looks like this now:
Performance counter stats for '/home/mingo/hackbench 10' (5 runs):
1703.674707 task-clock # 8.709 CPUs utilized ( +- 4.19% )
49,068 context-switches # 0.029 M/sec ( +- 16.66% )
8,303 CPU-migrations # 0.005 M/sec ( +- 24.90% )
17,397 page-faults # 0.010 M/sec ( +- 0.46% )
2,345,389,239 cycles # 1.377 GHz ( +- 4.61% ) [55.90%]
1,884,503,527 stalled-cycles-frontend # 80.35% frontend cycles idle ( +- 5.67% ) [50.39%]
743,919,737 stalled-cycles-backend # 31.72% backend cycles idle ( +- 8.75% ) [49.91%]
1,314,416,379 instructions # 0.56 insns per cycle
# 1.43 stalled cycles per insn ( +- 2.53% ) [60.87%]
272,592,567 branches # 160.003 M/sec ( +- 1.74% ) [56.56%]
3,794,846 branch-misses # 1.39% of all branches ( +- 6.59% ) [58.50%]
449,982,778 L1-dcache-loads # 264.125 M/sec ( +- 2.47% ) [49.88%]
22,404,961 L1-dcache-load-misses # 4.98% of all L1-dcache hits ( +- 6.08% ) [55.05%]
6,204,750 LLC-loads # 3.642 M/sec ( +- 8.91% ) [43.75%]
1,837,411 LLC-load-misses # 1.078 M/sec ( +- 7.27% ) [12.07%]
411,440,421 L1-icache-loads # 241.502 M/sec ( +- 5.60% ) [36.52%]
27,556,832 L1-icache-load-misses # 16.175 M/sec ( +- 7.46% ) [46.72%]
464,067,627 dTLB-loads # 272.392 M/sec ( +- 4.46% ) [54.17%]
10,765,648 dTLB-load-misses # 6.319 M/sec ( +- 3.18% ) [48.68%]
1,273,080,386 iTLB-loads # 747.256 M/sec ( +- 3.38% ) [47.53%]
117,481 iTLB-load-misses # 0.069 M/sec ( +- 14.99% ) [47.01%]
4,590,653 L1-dcache-prefetches # 2.695 M/sec ( +- 4.49% ) [46.19%]
1,712,660 L1-dcache-prefetch-misses # 1.005 M/sec ( +- 3.75% ) [44.82%]
0.195622057 seconds time elapsed ( +- 6.84% )
Also clean up the attribute construction code to be appending, and factor
it out into add_default_attributes().
Tweak the coverage percentage printout a bit, so that it's easier to view it
alongside the +- sttddev colum.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-to3kgu04449s64062val8b62@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-19 19:30:56 +08:00
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$ perf stat ./hackbench 10
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2009-04-20 21:37:32 +08:00
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perf stat: Add -d -d and -d -d -d options to show more CPU events
Print even more detailed statistics if requested via perf stat -d:
-d: detailed events, L1 and LLC data cache
-d -d: more detailed events, dTLB and iTLB events
-d -d -d: very detailed events, adding prefetch events
Full output looks like this now:
Performance counter stats for '/home/mingo/hackbench 10' (5 runs):
1703.674707 task-clock # 8.709 CPUs utilized ( +- 4.19% )
49,068 context-switches # 0.029 M/sec ( +- 16.66% )
8,303 CPU-migrations # 0.005 M/sec ( +- 24.90% )
17,397 page-faults # 0.010 M/sec ( +- 0.46% )
2,345,389,239 cycles # 1.377 GHz ( +- 4.61% ) [55.90%]
1,884,503,527 stalled-cycles-frontend # 80.35% frontend cycles idle ( +- 5.67% ) [50.39%]
743,919,737 stalled-cycles-backend # 31.72% backend cycles idle ( +- 8.75% ) [49.91%]
1,314,416,379 instructions # 0.56 insns per cycle
# 1.43 stalled cycles per insn ( +- 2.53% ) [60.87%]
272,592,567 branches # 160.003 M/sec ( +- 1.74% ) [56.56%]
3,794,846 branch-misses # 1.39% of all branches ( +- 6.59% ) [58.50%]
449,982,778 L1-dcache-loads # 264.125 M/sec ( +- 2.47% ) [49.88%]
22,404,961 L1-dcache-load-misses # 4.98% of all L1-dcache hits ( +- 6.08% ) [55.05%]
6,204,750 LLC-loads # 3.642 M/sec ( +- 8.91% ) [43.75%]
1,837,411 LLC-load-misses # 1.078 M/sec ( +- 7.27% ) [12.07%]
411,440,421 L1-icache-loads # 241.502 M/sec ( +- 5.60% ) [36.52%]
27,556,832 L1-icache-load-misses # 16.175 M/sec ( +- 7.46% ) [46.72%]
464,067,627 dTLB-loads # 272.392 M/sec ( +- 4.46% ) [54.17%]
10,765,648 dTLB-load-misses # 6.319 M/sec ( +- 3.18% ) [48.68%]
1,273,080,386 iTLB-loads # 747.256 M/sec ( +- 3.38% ) [47.53%]
117,481 iTLB-load-misses # 0.069 M/sec ( +- 14.99% ) [47.01%]
4,590,653 L1-dcache-prefetches # 2.695 M/sec ( +- 4.49% ) [46.19%]
1,712,660 L1-dcache-prefetch-misses # 1.005 M/sec ( +- 3.75% ) [44.82%]
0.195622057 seconds time elapsed ( +- 6.84% )
Also clean up the attribute construction code to be appending, and factor
it out into add_default_attributes().
Tweak the coverage percentage printout a bit, so that it's easier to view it
alongside the +- sttddev colum.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-to3kgu04449s64062val8b62@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-19 19:30:56 +08:00
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Time: 0.118
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2009-04-20 21:37:32 +08:00
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perf stat: Add -d -d and -d -d -d options to show more CPU events
Print even more detailed statistics if requested via perf stat -d:
-d: detailed events, L1 and LLC data cache
-d -d: more detailed events, dTLB and iTLB events
-d -d -d: very detailed events, adding prefetch events
Full output looks like this now:
Performance counter stats for '/home/mingo/hackbench 10' (5 runs):
1703.674707 task-clock # 8.709 CPUs utilized ( +- 4.19% )
49,068 context-switches # 0.029 M/sec ( +- 16.66% )
8,303 CPU-migrations # 0.005 M/sec ( +- 24.90% )
17,397 page-faults # 0.010 M/sec ( +- 0.46% )
2,345,389,239 cycles # 1.377 GHz ( +- 4.61% ) [55.90%]
1,884,503,527 stalled-cycles-frontend # 80.35% frontend cycles idle ( +- 5.67% ) [50.39%]
743,919,737 stalled-cycles-backend # 31.72% backend cycles idle ( +- 8.75% ) [49.91%]
1,314,416,379 instructions # 0.56 insns per cycle
# 1.43 stalled cycles per insn ( +- 2.53% ) [60.87%]
272,592,567 branches # 160.003 M/sec ( +- 1.74% ) [56.56%]
3,794,846 branch-misses # 1.39% of all branches ( +- 6.59% ) [58.50%]
449,982,778 L1-dcache-loads # 264.125 M/sec ( +- 2.47% ) [49.88%]
22,404,961 L1-dcache-load-misses # 4.98% of all L1-dcache hits ( +- 6.08% ) [55.05%]
6,204,750 LLC-loads # 3.642 M/sec ( +- 8.91% ) [43.75%]
1,837,411 LLC-load-misses # 1.078 M/sec ( +- 7.27% ) [12.07%]
411,440,421 L1-icache-loads # 241.502 M/sec ( +- 5.60% ) [36.52%]
27,556,832 L1-icache-load-misses # 16.175 M/sec ( +- 7.46% ) [46.72%]
464,067,627 dTLB-loads # 272.392 M/sec ( +- 4.46% ) [54.17%]
10,765,648 dTLB-load-misses # 6.319 M/sec ( +- 3.18% ) [48.68%]
1,273,080,386 iTLB-loads # 747.256 M/sec ( +- 3.38% ) [47.53%]
117,481 iTLB-load-misses # 0.069 M/sec ( +- 14.99% ) [47.01%]
4,590,653 L1-dcache-prefetches # 2.695 M/sec ( +- 4.49% ) [46.19%]
1,712,660 L1-dcache-prefetch-misses # 1.005 M/sec ( +- 3.75% ) [44.82%]
0.195622057 seconds time elapsed ( +- 6.84% )
Also clean up the attribute construction code to be appending, and factor
it out into add_default_attributes().
Tweak the coverage percentage printout a bit, so that it's easier to view it
alongside the +- sttddev colum.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-to3kgu04449s64062val8b62@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-19 19:30:56 +08:00
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Performance counter stats for './hackbench 10':
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2009-04-20 21:37:32 +08:00
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perf stat: Add -d -d and -d -d -d options to show more CPU events
Print even more detailed statistics if requested via perf stat -d:
-d: detailed events, L1 and LLC data cache
-d -d: more detailed events, dTLB and iTLB events
-d -d -d: very detailed events, adding prefetch events
Full output looks like this now:
Performance counter stats for '/home/mingo/hackbench 10' (5 runs):
1703.674707 task-clock # 8.709 CPUs utilized ( +- 4.19% )
49,068 context-switches # 0.029 M/sec ( +- 16.66% )
8,303 CPU-migrations # 0.005 M/sec ( +- 24.90% )
17,397 page-faults # 0.010 M/sec ( +- 0.46% )
2,345,389,239 cycles # 1.377 GHz ( +- 4.61% ) [55.90%]
1,884,503,527 stalled-cycles-frontend # 80.35% frontend cycles idle ( +- 5.67% ) [50.39%]
743,919,737 stalled-cycles-backend # 31.72% backend cycles idle ( +- 8.75% ) [49.91%]
1,314,416,379 instructions # 0.56 insns per cycle
# 1.43 stalled cycles per insn ( +- 2.53% ) [60.87%]
272,592,567 branches # 160.003 M/sec ( +- 1.74% ) [56.56%]
3,794,846 branch-misses # 1.39% of all branches ( +- 6.59% ) [58.50%]
449,982,778 L1-dcache-loads # 264.125 M/sec ( +- 2.47% ) [49.88%]
22,404,961 L1-dcache-load-misses # 4.98% of all L1-dcache hits ( +- 6.08% ) [55.05%]
6,204,750 LLC-loads # 3.642 M/sec ( +- 8.91% ) [43.75%]
1,837,411 LLC-load-misses # 1.078 M/sec ( +- 7.27% ) [12.07%]
411,440,421 L1-icache-loads # 241.502 M/sec ( +- 5.60% ) [36.52%]
27,556,832 L1-icache-load-misses # 16.175 M/sec ( +- 7.46% ) [46.72%]
464,067,627 dTLB-loads # 272.392 M/sec ( +- 4.46% ) [54.17%]
10,765,648 dTLB-load-misses # 6.319 M/sec ( +- 3.18% ) [48.68%]
1,273,080,386 iTLB-loads # 747.256 M/sec ( +- 3.38% ) [47.53%]
117,481 iTLB-load-misses # 0.069 M/sec ( +- 14.99% ) [47.01%]
4,590,653 L1-dcache-prefetches # 2.695 M/sec ( +- 4.49% ) [46.19%]
1,712,660 L1-dcache-prefetch-misses # 1.005 M/sec ( +- 3.75% ) [44.82%]
0.195622057 seconds time elapsed ( +- 6.84% )
Also clean up the attribute construction code to be appending, and factor
it out into add_default_attributes().
Tweak the coverage percentage printout a bit, so that it's easier to view it
alongside the +- sttddev colum.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-to3kgu04449s64062val8b62@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-19 19:30:56 +08:00
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1708.761321 task-clock # 11.037 CPUs utilized
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41,190 context-switches # 0.024 M/sec
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6,735 CPU-migrations # 0.004 M/sec
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17,318 page-faults # 0.010 M/sec
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5,205,202,243 cycles # 3.046 GHz
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3,856,436,920 stalled-cycles-frontend # 74.09% frontend cycles idle
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1,600,790,871 stalled-cycles-backend # 30.75% backend cycles idle
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2,603,501,247 instructions # 0.50 insns per cycle
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# 1.48 stalled cycles per insn
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484,357,498 branches # 283.455 M/sec
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6,388,934 branch-misses # 1.32% of all branches
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0.154822978 seconds time elapsed
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2009-04-20 21:37:32 +08:00
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2009-05-26 15:17:18 +08:00
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*
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perf stat: Add -d -d and -d -d -d options to show more CPU events
Print even more detailed statistics if requested via perf stat -d:
-d: detailed events, L1 and LLC data cache
-d -d: more detailed events, dTLB and iTLB events
-d -d -d: very detailed events, adding prefetch events
Full output looks like this now:
Performance counter stats for '/home/mingo/hackbench 10' (5 runs):
1703.674707 task-clock # 8.709 CPUs utilized ( +- 4.19% )
49,068 context-switches # 0.029 M/sec ( +- 16.66% )
8,303 CPU-migrations # 0.005 M/sec ( +- 24.90% )
17,397 page-faults # 0.010 M/sec ( +- 0.46% )
2,345,389,239 cycles # 1.377 GHz ( +- 4.61% ) [55.90%]
1,884,503,527 stalled-cycles-frontend # 80.35% frontend cycles idle ( +- 5.67% ) [50.39%]
743,919,737 stalled-cycles-backend # 31.72% backend cycles idle ( +- 8.75% ) [49.91%]
1,314,416,379 instructions # 0.56 insns per cycle
# 1.43 stalled cycles per insn ( +- 2.53% ) [60.87%]
272,592,567 branches # 160.003 M/sec ( +- 1.74% ) [56.56%]
3,794,846 branch-misses # 1.39% of all branches ( +- 6.59% ) [58.50%]
449,982,778 L1-dcache-loads # 264.125 M/sec ( +- 2.47% ) [49.88%]
22,404,961 L1-dcache-load-misses # 4.98% of all L1-dcache hits ( +- 6.08% ) [55.05%]
6,204,750 LLC-loads # 3.642 M/sec ( +- 8.91% ) [43.75%]
1,837,411 LLC-load-misses # 1.078 M/sec ( +- 7.27% ) [12.07%]
411,440,421 L1-icache-loads # 241.502 M/sec ( +- 5.60% ) [36.52%]
27,556,832 L1-icache-load-misses # 16.175 M/sec ( +- 7.46% ) [46.72%]
464,067,627 dTLB-loads # 272.392 M/sec ( +- 4.46% ) [54.17%]
10,765,648 dTLB-load-misses # 6.319 M/sec ( +- 3.18% ) [48.68%]
1,273,080,386 iTLB-loads # 747.256 M/sec ( +- 3.38% ) [47.53%]
117,481 iTLB-load-misses # 0.069 M/sec ( +- 14.99% ) [47.01%]
4,590,653 L1-dcache-prefetches # 2.695 M/sec ( +- 4.49% ) [46.19%]
1,712,660 L1-dcache-prefetch-misses # 1.005 M/sec ( +- 3.75% ) [44.82%]
0.195622057 seconds time elapsed ( +- 6.84% )
Also clean up the attribute construction code to be appending, and factor
it out into add_default_attributes().
Tweak the coverage percentage printout a bit, so that it's easier to view it
alongside the +- sttddev colum.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-to3kgu04449s64062val8b62@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-19 19:30:56 +08:00
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* Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
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2009-05-26 15:17:18 +08:00
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*
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* Improvements and fixes by:
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*
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* Arjan van de Ven <arjan@linux.intel.com>
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* Yanmin Zhang <yanmin.zhang@intel.com>
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* Wu Fengguang <fengguang.wu@intel.com>
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* Mike Galbraith <efault@gmx.de>
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* Paul Mackerras <paulus@samba.org>
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2009-06-27 05:32:07 +08:00
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* Jaswinder Singh Rajput <jaswinder@kernel.org>
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2009-05-26 15:17:18 +08:00
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*
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* Released under the GPL v2. (and only v2, not any later version)
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2009-04-20 21:37:32 +08:00
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*/
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2009-05-24 00:28:58 +08:00
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#include "perf.h"
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2009-05-27 15:10:38 +08:00
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#include "builtin.h"
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2014-10-17 23:17:40 +08:00
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#include "util/cgroup.h"
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2009-04-27 14:02:14 +08:00
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#include "util/util.h"
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2015-12-15 23:39:39 +08:00
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#include <subcmd/parse-options.h>
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2009-05-26 15:17:18 +08:00
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#include "util/parse-events.h"
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2013-08-22 07:47:26 +08:00
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#include "util/pmu.h"
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2009-08-17 04:05:48 +08:00
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#include "util/event.h"
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2011-01-12 06:56:53 +08:00
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#include "util/evlist.h"
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2011-01-04 02:39:04 +08:00
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#include "util/evsel.h"
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2009-08-17 04:05:48 +08:00
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#include "util/debug.h"
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2016-09-16 23:50:03 +08:00
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#include "util/drv_configs.h"
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2011-04-27 11:39:24 +08:00
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#include "util/color.h"
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2012-09-17 16:31:14 +08:00
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#include "util/stat.h"
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2009-12-31 16:05:50 +08:00
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#include "util/header.h"
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perf tools: Fix sparse CPU numbering related bugs
At present, the perf subcommands that do system-wide monitoring
(perf stat, perf record and perf top) don't work properly unless
the online cpus are numbered 0, 1, ..., N-1. These tools ask
for the number of online cpus with sysconf(_SC_NPROCESSORS_ONLN)
and then try to create events for cpus 0, 1, ..., N-1.
This creates problems for systems where the online cpus are
numbered sparsely. For example, a POWER6 system in
single-threaded mode (i.e. only running 1 hardware thread per
core) will have only even-numbered cpus online.
This fixes the problem by reading the /sys/devices/system/cpu/online
file to find out which cpus are online. The code that does that is in
tools/perf/util/cpumap.[ch], and consists of a read_cpu_map()
function that sets up a cpumap[] array and returns the number of
online cpus. If /sys/devices/system/cpu/online can't be read or
can't be parsed successfully, it falls back to using sysconf to
ask how many cpus are online and sets up an identity map in cpumap[].
The perf record, perf stat and perf top code then calls
read_cpu_map() in the system-wide monitoring case (instead of
sysconf) and uses cpumap[] to get the cpu numbers to pass to
perf_event_open.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Cc: Anton Blanchard <anton@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
LKML-Reference: <20100310093609.GA3959@brick.ozlabs.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-03-10 17:36:09 +08:00
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#include "util/cpumap.h"
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2010-03-18 22:36:05 +08:00
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#include "util/thread.h"
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2011-01-19 01:15:24 +08:00
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#include "util/thread_map.h"
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2015-08-07 18:51:03 +08:00
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#include "util/counts.h"
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perf stat: Basic support for TopDown in perf stat
Add basic plumbing for TopDown in perf stat
TopDown is intended to replace the frontend cycles idle/ backend cycles
idle metrics in standard perf stat output. These metrics are not
reliable in many workloads, due to out of order effects.
This implements a new --topdown mode in perf stat (similar to
--transaction) that measures the pipe line bottlenecks using
standardized formulas. The measurement can be all done with 5 counters
(one fixed counter)
The result are four metrics:
FrontendBound, BackendBound, BadSpeculation, Retiring
that describe the CPU pipeline behavior on a high level.
The full top down methology has many hierarchical metrics. This
implementation only supports level 1 which can be collected without
multiplexing. A full implementation of top down on top of perf is
available in pmu-tools toplev. (http://github.com/andikleen/pmu-tools)
The current version works on Intel Core CPUs starting with Sandy Bridge,
and Atom CPUs starting with Silvermont. In principle the generic
metrics should be also implementable on other out of order CPUs.
TopDown level 1 uses a set of abstracted metrics which are generic to
out of order CPU cores (although some CPUs may not implement all of
them):
topdown-total-slots Available slots in the pipeline
topdown-slots-issued Slots issued into the pipeline
topdown-slots-retired Slots successfully retired
topdown-fetch-bubbles Pipeline gaps in the frontend
topdown-recovery-bubbles Pipeline gaps during recovery
from misspeculation
These metrics then allow to compute four useful metrics:
FrontendBound, BackendBound, Retiring, BadSpeculation.
Add a new --topdown options to enable events. When --topdown is
specified set up events for all topdown events supported by the kernel.
Add topdown-* as a special case to the event parser, as is needed for
all events containing -.
The actual code to compute the metrics is in follow-on patches.
v2: Use standard sysctl read function.
v3: Move x86 specific code to arch/
v4: Enable --metric-only implicitly for topdown.
v5: Add --single-thread option to not force per core mode
v6: Fix output order of topdown metrics
v7: Allow combining with -d
v8: Remove --single-thread again
v9: Rename functions, adding arch_ and topdown_.
v10: Expand man page and describe TopDown better
Paste intro into commit description.
Print error when malloc fails.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1464119559-17203-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-30 23:49:42 +08:00
|
|
|
#include "util/group.h"
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
#include "util/session.h"
|
2015-11-05 22:40:55 +08:00
|
|
|
#include "util/tool.h"
|
perf stat: Basic support for TopDown in perf stat
Add basic plumbing for TopDown in perf stat
TopDown is intended to replace the frontend cycles idle/ backend cycles
idle metrics in standard perf stat output. These metrics are not
reliable in many workloads, due to out of order effects.
This implements a new --topdown mode in perf stat (similar to
--transaction) that measures the pipe line bottlenecks using
standardized formulas. The measurement can be all done with 5 counters
(one fixed counter)
The result are four metrics:
FrontendBound, BackendBound, BadSpeculation, Retiring
that describe the CPU pipeline behavior on a high level.
The full top down methology has many hierarchical metrics. This
implementation only supports level 1 which can be collected without
multiplexing. A full implementation of top down on top of perf is
available in pmu-tools toplev. (http://github.com/andikleen/pmu-tools)
The current version works on Intel Core CPUs starting with Sandy Bridge,
and Atom CPUs starting with Silvermont. In principle the generic
metrics should be also implementable on other out of order CPUs.
TopDown level 1 uses a set of abstracted metrics which are generic to
out of order CPU cores (although some CPUs may not implement all of
them):
topdown-total-slots Available slots in the pipeline
topdown-slots-issued Slots issued into the pipeline
topdown-slots-retired Slots successfully retired
topdown-fetch-bubbles Pipeline gaps in the frontend
topdown-recovery-bubbles Pipeline gaps during recovery
from misspeculation
These metrics then allow to compute four useful metrics:
FrontendBound, BackendBound, Retiring, BadSpeculation.
Add a new --topdown options to enable events. When --topdown is
specified set up events for all topdown events supported by the kernel.
Add topdown-* as a special case to the event parser, as is needed for
all events containing -.
The actual code to compute the metrics is in follow-on patches.
v2: Use standard sysctl read function.
v3: Move x86 specific code to arch/
v4: Enable --metric-only implicitly for topdown.
v5: Add --single-thread option to not force per core mode
v6: Fix output order of topdown metrics
v7: Allow combining with -d
v8: Remove --single-thread again
v9: Rename functions, adding arch_ and topdown_.
v10: Expand man page and describe TopDown better
Paste intro into commit description.
Print error when malloc fails.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1464119559-17203-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-30 23:49:42 +08:00
|
|
|
#include "util/group.h"
|
2015-11-05 22:40:55 +08:00
|
|
|
#include "asm/bug.h"
|
2009-04-20 21:37:32 +08:00
|
|
|
|
2016-08-06 02:40:30 +08:00
|
|
|
#include <linux/time64.h>
|
perf stat: Basic support for TopDown in perf stat
Add basic plumbing for TopDown in perf stat
TopDown is intended to replace the frontend cycles idle/ backend cycles
idle metrics in standard perf stat output. These metrics are not
reliable in many workloads, due to out of order effects.
This implements a new --topdown mode in perf stat (similar to
--transaction) that measures the pipe line bottlenecks using
standardized formulas. The measurement can be all done with 5 counters
(one fixed counter)
The result are four metrics:
FrontendBound, BackendBound, BadSpeculation, Retiring
that describe the CPU pipeline behavior on a high level.
The full top down methology has many hierarchical metrics. This
implementation only supports level 1 which can be collected without
multiplexing. A full implementation of top down on top of perf is
available in pmu-tools toplev. (http://github.com/andikleen/pmu-tools)
The current version works on Intel Core CPUs starting with Sandy Bridge,
and Atom CPUs starting with Silvermont. In principle the generic
metrics should be also implementable on other out of order CPUs.
TopDown level 1 uses a set of abstracted metrics which are generic to
out of order CPU cores (although some CPUs may not implement all of
them):
topdown-total-slots Available slots in the pipeline
topdown-slots-issued Slots issued into the pipeline
topdown-slots-retired Slots successfully retired
topdown-fetch-bubbles Pipeline gaps in the frontend
topdown-recovery-bubbles Pipeline gaps during recovery
from misspeculation
These metrics then allow to compute four useful metrics:
FrontendBound, BackendBound, Retiring, BadSpeculation.
Add a new --topdown options to enable events. When --topdown is
specified set up events for all topdown events supported by the kernel.
Add topdown-* as a special case to the event parser, as is needed for
all events containing -.
The actual code to compute the metrics is in follow-on patches.
v2: Use standard sysctl read function.
v3: Move x86 specific code to arch/
v4: Enable --metric-only implicitly for topdown.
v5: Add --single-thread option to not force per core mode
v6: Fix output order of topdown metrics
v7: Allow combining with -d
v8: Remove --single-thread again
v9: Rename functions, adding arch_ and topdown_.
v10: Expand man page and describe TopDown better
Paste intro into commit description.
Print error when malloc fails.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1464119559-17203-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-30 23:49:42 +08:00
|
|
|
#include <api/fs/fs.h>
|
2012-10-23 19:40:14 +08:00
|
|
|
#include <stdlib.h>
|
2009-04-20 21:37:32 +08:00
|
|
|
#include <sys/prctl.h>
|
perf stat: add perf stat -B to pretty print large numbers
It is hard to read very large numbers so provide an option to perf stat
to separate thousands using a separator. The patch leverages the locale
support of stdio. You need to set your LC_NUMERIC appropriately, for
instance LC_NUMERIC=en_US.UTF8. You need to pass -B to activate this
feature. This way existing scripts parsing the output do not need to be
changed. Here is an example.
$ perf stat noploop 2
noploop for 2 seconds
Performance counter stats for 'noploop 2':
1998.347031 task-clock-msecs # 0.998 CPUs
61 context-switches # 0.000 M/sec
0 CPU-migrations # 0.000 M/sec
118 page-faults # 0.000 M/sec
4,138,410,900 cycles # 2070.917 M/sec (scaled from 70.01%)
2,062,650,268 instructions # 0.498 IPC (scaled from 70.01%)
2,057,653,466 branches # 1029.678 M/sec (scaled from 70.01%)
40,267 branch-misses # 0.002 % (scaled from 30.04%)
2,055,961,348 cache-references # 1028.831 M/sec (scaled from 30.03%)
53,725 cache-misses # 0.027 M/sec (scaled from 30.02%)
2.001393933 seconds time elapsed
$ perf stat -B noploop 2
noploop for 2 seconds
Performance counter stats for 'noploop 2':
1998.297883 task-clock-msecs # 0.998 CPUs
59 context-switches # 0.000 M/sec
0 CPU-migrations # 0.000 M/sec
119 page-faults # 0.000 M/sec
4,131,380,160 cycles # 2067.450 M/sec (scaled from 70.01%)
2,059,096,507 instructions # 0.498 IPC (scaled from 70.01%)
2,054,681,303 branches # 1028.216 M/sec (scaled from 70.01%)
25,650 branch-misses # 0.001 % (scaled from 30.05%)
2,056,283,014 cache-references # 1029.017 M/sec (scaled from 30.03%)
47,097 cache-misses # 0.024 M/sec (scaled from 30.02%)
2.001391016 seconds time elapsed
Cc: David S. Miller <davem@davemloft.net>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <4bf28fe8.914ed80a.01ca.fffff5f5@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-05-18 21:00:01 +08:00
|
|
|
#include <locale.h>
|
2016-05-06 07:04:03 +08:00
|
|
|
#include <math.h>
|
2009-05-05 23:50:27 +08:00
|
|
|
|
perf stat: Add csv-style output
This patch adds an option (-x/--field-separator) to print counts using a
CSV-style output. The user can pass a custom separator. This makes it very easy
to import counts directly into your favorite spreadsheet without having to
write scripts.
Example:
$ perf stat --field-separator=, -a -- sleep 1
4009.961740,task-clock-msecs
13,context-switches
2,CPU-migrations
189,page-faults
9596385684,cycles
3493659441,instructions
872897069,branches
41562,branch-misses
22424,cache-references
1289,cache-misses
Works also in non-aggregated mode:
$ perf stat -x , -a -A -- sleep 1
CPU0,1002.526168,task-clock-msecs
CPU1,1002.528365,task-clock-msecs
CPU2,1002.523360,task-clock-msecs
CPU3,1002.519878,task-clock-msecs
CPU0,1,context-switches
CPU1,5,context-switches
CPU2,5,context-switches
CPU3,6,context-switches
CPU0,0,CPU-migrations
CPU1,1,CPU-migrations
CPU2,0,CPU-migrations
CPU3,1,CPU-migrations
CPU0,2,page-faults
CPU1,6,page-faults
CPU2,9,page-faults
CPU3,174,page-faults
CPU0,2399439771,cycles
CPU1,2380369063,cycles
CPU2,2399142710,cycles
CPU3,2373161192,cycles
CPU0,872900618,instructions
CPU1,873030960,instructions
CPU2,872714525,instructions
CPU3,874460580,instructions
CPU0,221556839,branches
CPU1,218134342,branches
CPU2,218161730,branches
CPU3,218284093,branches
CPU0,18556,branch-misses
CPU1,1449,branch-misses
CPU2,3447,branch-misses
CPU3,12714,branch-misses
CPU0,8330,cache-references
CPU1,313844,cache-references
CPU2,47993728,cache-references
CPU3,826481,cache-references
CPU0,272,cache-misses
CPU1,5360,cache-misses
CPU2,1342193,cache-misses
CPU3,13992,cache-misses
This second version adds the ability to name a separator and uses
field-separator as the long option to be consistent with perf report.
Commiter note: Since we enabled --big-num by default in 201e0b0 and -x can't be
used with it, we need to notice if the user explicitely enabled or disabled -B,
add code to disable big_num if the user didn't explicitely set --big_num when
-x is used.
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederik Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: paulus@samba.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
LKML-Reference: <4cf68aa7.0fedd80a.5294.1203@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-02 00:49:05 +08:00
|
|
|
#define DEFAULT_SEPARATOR " "
|
2011-05-30 22:55:59 +08:00
|
|
|
#define CNTR_NOT_SUPPORTED "<not supported>"
|
|
|
|
#define CNTR_NOT_COUNTED "<not counted>"
|
perf stat: Add csv-style output
This patch adds an option (-x/--field-separator) to print counts using a
CSV-style output. The user can pass a custom separator. This makes it very easy
to import counts directly into your favorite spreadsheet without having to
write scripts.
Example:
$ perf stat --field-separator=, -a -- sleep 1
4009.961740,task-clock-msecs
13,context-switches
2,CPU-migrations
189,page-faults
9596385684,cycles
3493659441,instructions
872897069,branches
41562,branch-misses
22424,cache-references
1289,cache-misses
Works also in non-aggregated mode:
$ perf stat -x , -a -A -- sleep 1
CPU0,1002.526168,task-clock-msecs
CPU1,1002.528365,task-clock-msecs
CPU2,1002.523360,task-clock-msecs
CPU3,1002.519878,task-clock-msecs
CPU0,1,context-switches
CPU1,5,context-switches
CPU2,5,context-switches
CPU3,6,context-switches
CPU0,0,CPU-migrations
CPU1,1,CPU-migrations
CPU2,0,CPU-migrations
CPU3,1,CPU-migrations
CPU0,2,page-faults
CPU1,6,page-faults
CPU2,9,page-faults
CPU3,174,page-faults
CPU0,2399439771,cycles
CPU1,2380369063,cycles
CPU2,2399142710,cycles
CPU3,2373161192,cycles
CPU0,872900618,instructions
CPU1,873030960,instructions
CPU2,872714525,instructions
CPU3,874460580,instructions
CPU0,221556839,branches
CPU1,218134342,branches
CPU2,218161730,branches
CPU3,218284093,branches
CPU0,18556,branch-misses
CPU1,1449,branch-misses
CPU2,3447,branch-misses
CPU3,12714,branch-misses
CPU0,8330,cache-references
CPU1,313844,cache-references
CPU2,47993728,cache-references
CPU3,826481,cache-references
CPU0,272,cache-misses
CPU1,5360,cache-misses
CPU2,1342193,cache-misses
CPU3,13992,cache-misses
This second version adds the ability to name a separator and uses
field-separator as the long option to be consistent with perf report.
Commiter note: Since we enabled --big-num by default in 201e0b0 and -x can't be
used with it, we need to notice if the user explicitely enabled or disabled -B,
add code to disable big_num if the user didn't explicitely set --big_num when
-x is used.
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederik Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: paulus@samba.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
LKML-Reference: <4cf68aa7.0fedd80a.5294.1203@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-02 00:49:05 +08:00
|
|
|
|
2015-06-26 17:29:26 +08:00
|
|
|
static void print_counters(struct timespec *ts, int argc, const char **argv);
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
|
2013-08-22 07:47:26 +08:00
|
|
|
/* Default events used for perf stat -T */
|
2015-06-03 22:25:53 +08:00
|
|
|
static const char *transaction_attrs = {
|
|
|
|
"task-clock,"
|
2013-08-22 07:47:26 +08:00
|
|
|
"{"
|
|
|
|
"instructions,"
|
|
|
|
"cycles,"
|
|
|
|
"cpu/cycles-t/,"
|
|
|
|
"cpu/tx-start/,"
|
|
|
|
"cpu/el-start/,"
|
|
|
|
"cpu/cycles-ct/"
|
|
|
|
"}"
|
|
|
|
};
|
|
|
|
|
|
|
|
/* More limited version when the CPU does not have all events. */
|
2015-06-03 22:25:53 +08:00
|
|
|
static const char * transaction_limited_attrs = {
|
|
|
|
"task-clock,"
|
2013-08-22 07:47:26 +08:00
|
|
|
"{"
|
|
|
|
"instructions,"
|
|
|
|
"cycles,"
|
|
|
|
"cpu/cycles-t/,"
|
|
|
|
"cpu/tx-start/"
|
|
|
|
"}"
|
|
|
|
};
|
|
|
|
|
perf stat: Basic support for TopDown in perf stat
Add basic plumbing for TopDown in perf stat
TopDown is intended to replace the frontend cycles idle/ backend cycles
idle metrics in standard perf stat output. These metrics are not
reliable in many workloads, due to out of order effects.
This implements a new --topdown mode in perf stat (similar to
--transaction) that measures the pipe line bottlenecks using
standardized formulas. The measurement can be all done with 5 counters
(one fixed counter)
The result are four metrics:
FrontendBound, BackendBound, BadSpeculation, Retiring
that describe the CPU pipeline behavior on a high level.
The full top down methology has many hierarchical metrics. This
implementation only supports level 1 which can be collected without
multiplexing. A full implementation of top down on top of perf is
available in pmu-tools toplev. (http://github.com/andikleen/pmu-tools)
The current version works on Intel Core CPUs starting with Sandy Bridge,
and Atom CPUs starting with Silvermont. In principle the generic
metrics should be also implementable on other out of order CPUs.
TopDown level 1 uses a set of abstracted metrics which are generic to
out of order CPU cores (although some CPUs may not implement all of
them):
topdown-total-slots Available slots in the pipeline
topdown-slots-issued Slots issued into the pipeline
topdown-slots-retired Slots successfully retired
topdown-fetch-bubbles Pipeline gaps in the frontend
topdown-recovery-bubbles Pipeline gaps during recovery
from misspeculation
These metrics then allow to compute four useful metrics:
FrontendBound, BackendBound, Retiring, BadSpeculation.
Add a new --topdown options to enable events. When --topdown is
specified set up events for all topdown events supported by the kernel.
Add topdown-* as a special case to the event parser, as is needed for
all events containing -.
The actual code to compute the metrics is in follow-on patches.
v2: Use standard sysctl read function.
v3: Move x86 specific code to arch/
v4: Enable --metric-only implicitly for topdown.
v5: Add --single-thread option to not force per core mode
v6: Fix output order of topdown metrics
v7: Allow combining with -d
v8: Remove --single-thread again
v9: Rename functions, adding arch_ and topdown_.
v10: Expand man page and describe TopDown better
Paste intro into commit description.
Print error when malloc fails.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1464119559-17203-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-30 23:49:42 +08:00
|
|
|
static const char * topdown_attrs[] = {
|
|
|
|
"topdown-total-slots",
|
|
|
|
"topdown-slots-retired",
|
|
|
|
"topdown-recovery-bubbles",
|
|
|
|
"topdown-fetch-bubbles",
|
|
|
|
"topdown-slots-issued",
|
|
|
|
NULL,
|
|
|
|
};
|
|
|
|
|
2012-04-06 00:26:27 +08:00
|
|
|
static struct perf_evlist *evsel_list;
|
2011-01-12 06:56:53 +08:00
|
|
|
|
2013-11-13 03:46:16 +08:00
|
|
|
static struct target target = {
|
2012-05-07 13:09:04 +08:00
|
|
|
.uid = UINT_MAX,
|
|
|
|
};
|
2009-04-20 21:37:32 +08:00
|
|
|
|
2015-10-25 22:51:18 +08:00
|
|
|
typedef int (*aggr_get_id_t)(struct cpu_map *m, int cpu);
|
|
|
|
|
2009-06-24 20:49:34 +08:00
|
|
|
static int run_count = 1;
|
2010-05-12 16:40:01 +08:00
|
|
|
static bool no_inherit = false;
|
2013-06-04 23:44:26 +08:00
|
|
|
static volatile pid_t child_pid = -1;
|
2010-04-13 16:37:33 +08:00
|
|
|
static bool null_run = false;
|
perf stat: Add -d -d and -d -d -d options to show more CPU events
Print even more detailed statistics if requested via perf stat -d:
-d: detailed events, L1 and LLC data cache
-d -d: more detailed events, dTLB and iTLB events
-d -d -d: very detailed events, adding prefetch events
Full output looks like this now:
Performance counter stats for '/home/mingo/hackbench 10' (5 runs):
1703.674707 task-clock # 8.709 CPUs utilized ( +- 4.19% )
49,068 context-switches # 0.029 M/sec ( +- 16.66% )
8,303 CPU-migrations # 0.005 M/sec ( +- 24.90% )
17,397 page-faults # 0.010 M/sec ( +- 0.46% )
2,345,389,239 cycles # 1.377 GHz ( +- 4.61% ) [55.90%]
1,884,503,527 stalled-cycles-frontend # 80.35% frontend cycles idle ( +- 5.67% ) [50.39%]
743,919,737 stalled-cycles-backend # 31.72% backend cycles idle ( +- 8.75% ) [49.91%]
1,314,416,379 instructions # 0.56 insns per cycle
# 1.43 stalled cycles per insn ( +- 2.53% ) [60.87%]
272,592,567 branches # 160.003 M/sec ( +- 1.74% ) [56.56%]
3,794,846 branch-misses # 1.39% of all branches ( +- 6.59% ) [58.50%]
449,982,778 L1-dcache-loads # 264.125 M/sec ( +- 2.47% ) [49.88%]
22,404,961 L1-dcache-load-misses # 4.98% of all L1-dcache hits ( +- 6.08% ) [55.05%]
6,204,750 LLC-loads # 3.642 M/sec ( +- 8.91% ) [43.75%]
1,837,411 LLC-load-misses # 1.078 M/sec ( +- 7.27% ) [12.07%]
411,440,421 L1-icache-loads # 241.502 M/sec ( +- 5.60% ) [36.52%]
27,556,832 L1-icache-load-misses # 16.175 M/sec ( +- 7.46% ) [46.72%]
464,067,627 dTLB-loads # 272.392 M/sec ( +- 4.46% ) [54.17%]
10,765,648 dTLB-load-misses # 6.319 M/sec ( +- 3.18% ) [48.68%]
1,273,080,386 iTLB-loads # 747.256 M/sec ( +- 3.38% ) [47.53%]
117,481 iTLB-load-misses # 0.069 M/sec ( +- 14.99% ) [47.01%]
4,590,653 L1-dcache-prefetches # 2.695 M/sec ( +- 4.49% ) [46.19%]
1,712,660 L1-dcache-prefetch-misses # 1.005 M/sec ( +- 3.75% ) [44.82%]
0.195622057 seconds time elapsed ( +- 6.84% )
Also clean up the attribute construction code to be appending, and factor
it out into add_default_attributes().
Tweak the coverage percentage printout a bit, so that it's easier to view it
alongside the +- sttddev colum.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-to3kgu04449s64062val8b62@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-19 19:30:56 +08:00
|
|
|
static int detailed_run = 0;
|
2013-08-22 07:47:26 +08:00
|
|
|
static bool transaction_run;
|
perf stat: Basic support for TopDown in perf stat
Add basic plumbing for TopDown in perf stat
TopDown is intended to replace the frontend cycles idle/ backend cycles
idle metrics in standard perf stat output. These metrics are not
reliable in many workloads, due to out of order effects.
This implements a new --topdown mode in perf stat (similar to
--transaction) that measures the pipe line bottlenecks using
standardized formulas. The measurement can be all done with 5 counters
(one fixed counter)
The result are four metrics:
FrontendBound, BackendBound, BadSpeculation, Retiring
that describe the CPU pipeline behavior on a high level.
The full top down methology has many hierarchical metrics. This
implementation only supports level 1 which can be collected without
multiplexing. A full implementation of top down on top of perf is
available in pmu-tools toplev. (http://github.com/andikleen/pmu-tools)
The current version works on Intel Core CPUs starting with Sandy Bridge,
and Atom CPUs starting with Silvermont. In principle the generic
metrics should be also implementable on other out of order CPUs.
TopDown level 1 uses a set of abstracted metrics which are generic to
out of order CPU cores (although some CPUs may not implement all of
them):
topdown-total-slots Available slots in the pipeline
topdown-slots-issued Slots issued into the pipeline
topdown-slots-retired Slots successfully retired
topdown-fetch-bubbles Pipeline gaps in the frontend
topdown-recovery-bubbles Pipeline gaps during recovery
from misspeculation
These metrics then allow to compute four useful metrics:
FrontendBound, BackendBound, Retiring, BadSpeculation.
Add a new --topdown options to enable events. When --topdown is
specified set up events for all topdown events supported by the kernel.
Add topdown-* as a special case to the event parser, as is needed for
all events containing -.
The actual code to compute the metrics is in follow-on patches.
v2: Use standard sysctl read function.
v3: Move x86 specific code to arch/
v4: Enable --metric-only implicitly for topdown.
v5: Add --single-thread option to not force per core mode
v6: Fix output order of topdown metrics
v7: Allow combining with -d
v8: Remove --single-thread again
v9: Rename functions, adding arch_ and topdown_.
v10: Expand man page and describe TopDown better
Paste intro into commit description.
Print error when malloc fails.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1464119559-17203-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-30 23:49:42 +08:00
|
|
|
static bool topdown_run = false;
|
2010-12-02 03:53:27 +08:00
|
|
|
static bool big_num = true;
|
perf stat: Add csv-style output
This patch adds an option (-x/--field-separator) to print counts using a
CSV-style output. The user can pass a custom separator. This makes it very easy
to import counts directly into your favorite spreadsheet without having to
write scripts.
Example:
$ perf stat --field-separator=, -a -- sleep 1
4009.961740,task-clock-msecs
13,context-switches
2,CPU-migrations
189,page-faults
9596385684,cycles
3493659441,instructions
872897069,branches
41562,branch-misses
22424,cache-references
1289,cache-misses
Works also in non-aggregated mode:
$ perf stat -x , -a -A -- sleep 1
CPU0,1002.526168,task-clock-msecs
CPU1,1002.528365,task-clock-msecs
CPU2,1002.523360,task-clock-msecs
CPU3,1002.519878,task-clock-msecs
CPU0,1,context-switches
CPU1,5,context-switches
CPU2,5,context-switches
CPU3,6,context-switches
CPU0,0,CPU-migrations
CPU1,1,CPU-migrations
CPU2,0,CPU-migrations
CPU3,1,CPU-migrations
CPU0,2,page-faults
CPU1,6,page-faults
CPU2,9,page-faults
CPU3,174,page-faults
CPU0,2399439771,cycles
CPU1,2380369063,cycles
CPU2,2399142710,cycles
CPU3,2373161192,cycles
CPU0,872900618,instructions
CPU1,873030960,instructions
CPU2,872714525,instructions
CPU3,874460580,instructions
CPU0,221556839,branches
CPU1,218134342,branches
CPU2,218161730,branches
CPU3,218284093,branches
CPU0,18556,branch-misses
CPU1,1449,branch-misses
CPU2,3447,branch-misses
CPU3,12714,branch-misses
CPU0,8330,cache-references
CPU1,313844,cache-references
CPU2,47993728,cache-references
CPU3,826481,cache-references
CPU0,272,cache-misses
CPU1,5360,cache-misses
CPU2,1342193,cache-misses
CPU3,13992,cache-misses
This second version adds the ability to name a separator and uses
field-separator as the long option to be consistent with perf report.
Commiter note: Since we enabled --big-num by default in 201e0b0 and -x can't be
used with it, we need to notice if the user explicitely enabled or disabled -B,
add code to disable big_num if the user didn't explicitely set --big_num when
-x is used.
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederik Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: paulus@samba.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
LKML-Reference: <4cf68aa7.0fedd80a.5294.1203@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-02 00:49:05 +08:00
|
|
|
static int big_num_opt = -1;
|
|
|
|
static const char *csv_sep = NULL;
|
|
|
|
static bool csv_output = false;
|
2011-08-17 18:42:07 +08:00
|
|
|
static bool group = false;
|
2012-10-23 19:40:14 +08:00
|
|
|
static const char *pre_cmd = NULL;
|
|
|
|
static const char *post_cmd = NULL;
|
|
|
|
static bool sync_run = false;
|
2013-08-03 08:41:11 +08:00
|
|
|
static unsigned int initial_delay = 0;
|
2013-11-13 00:58:49 +08:00
|
|
|
static unsigned int unit_width = 4; /* strlen("unit") */
|
2013-03-02 02:02:27 +08:00
|
|
|
static bool forever = false;
|
2016-03-04 07:57:36 +08:00
|
|
|
static bool metric_only = false;
|
perf stat: Basic support for TopDown in perf stat
Add basic plumbing for TopDown in perf stat
TopDown is intended to replace the frontend cycles idle/ backend cycles
idle metrics in standard perf stat output. These metrics are not
reliable in many workloads, due to out of order effects.
This implements a new --topdown mode in perf stat (similar to
--transaction) that measures the pipe line bottlenecks using
standardized formulas. The measurement can be all done with 5 counters
(one fixed counter)
The result are four metrics:
FrontendBound, BackendBound, BadSpeculation, Retiring
that describe the CPU pipeline behavior on a high level.
The full top down methology has many hierarchical metrics. This
implementation only supports level 1 which can be collected without
multiplexing. A full implementation of top down on top of perf is
available in pmu-tools toplev. (http://github.com/andikleen/pmu-tools)
The current version works on Intel Core CPUs starting with Sandy Bridge,
and Atom CPUs starting with Silvermont. In principle the generic
metrics should be also implementable on other out of order CPUs.
TopDown level 1 uses a set of abstracted metrics which are generic to
out of order CPU cores (although some CPUs may not implement all of
them):
topdown-total-slots Available slots in the pipeline
topdown-slots-issued Slots issued into the pipeline
topdown-slots-retired Slots successfully retired
topdown-fetch-bubbles Pipeline gaps in the frontend
topdown-recovery-bubbles Pipeline gaps during recovery
from misspeculation
These metrics then allow to compute four useful metrics:
FrontendBound, BackendBound, Retiring, BadSpeculation.
Add a new --topdown options to enable events. When --topdown is
specified set up events for all topdown events supported by the kernel.
Add topdown-* as a special case to the event parser, as is needed for
all events containing -.
The actual code to compute the metrics is in follow-on patches.
v2: Use standard sysctl read function.
v3: Move x86 specific code to arch/
v4: Enable --metric-only implicitly for topdown.
v5: Add --single-thread option to not force per core mode
v6: Fix output order of topdown metrics
v7: Allow combining with -d
v8: Remove --single-thread again
v9: Rename functions, adding arch_ and topdown_.
v10: Expand man page and describe TopDown better
Paste intro into commit description.
Print error when malloc fails.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1464119559-17203-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-30 23:49:42 +08:00
|
|
|
static bool force_metric_only = false;
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
static struct timespec ref_time;
|
2013-02-14 20:57:27 +08:00
|
|
|
static struct cpu_map *aggr_map;
|
2015-10-25 22:51:18 +08:00
|
|
|
static aggr_get_id_t aggr_get_id;
|
2015-11-05 22:40:45 +08:00
|
|
|
static bool append_file;
|
|
|
|
static const char *output_name;
|
|
|
|
static int output_fd;
|
perf stat: add perf stat -B to pretty print large numbers
It is hard to read very large numbers so provide an option to perf stat
to separate thousands using a separator. The patch leverages the locale
support of stdio. You need to set your LC_NUMERIC appropriately, for
instance LC_NUMERIC=en_US.UTF8. You need to pass -B to activate this
feature. This way existing scripts parsing the output do not need to be
changed. Here is an example.
$ perf stat noploop 2
noploop for 2 seconds
Performance counter stats for 'noploop 2':
1998.347031 task-clock-msecs # 0.998 CPUs
61 context-switches # 0.000 M/sec
0 CPU-migrations # 0.000 M/sec
118 page-faults # 0.000 M/sec
4,138,410,900 cycles # 2070.917 M/sec (scaled from 70.01%)
2,062,650,268 instructions # 0.498 IPC (scaled from 70.01%)
2,057,653,466 branches # 1029.678 M/sec (scaled from 70.01%)
40,267 branch-misses # 0.002 % (scaled from 30.04%)
2,055,961,348 cache-references # 1028.831 M/sec (scaled from 30.03%)
53,725 cache-misses # 0.027 M/sec (scaled from 30.02%)
2.001393933 seconds time elapsed
$ perf stat -B noploop 2
noploop for 2 seconds
Performance counter stats for 'noploop 2':
1998.297883 task-clock-msecs # 0.998 CPUs
59 context-switches # 0.000 M/sec
0 CPU-migrations # 0.000 M/sec
119 page-faults # 0.000 M/sec
4,131,380,160 cycles # 2067.450 M/sec (scaled from 70.01%)
2,059,096,507 instructions # 0.498 IPC (scaled from 70.01%)
2,054,681,303 branches # 1028.216 M/sec (scaled from 70.01%)
25,650 branch-misses # 0.001 % (scaled from 30.05%)
2,056,283,014 cache-references # 1029.017 M/sec (scaled from 30.03%)
47,097 cache-misses # 0.024 M/sec (scaled from 30.02%)
2.001391016 seconds time elapsed
Cc: David S. Miller <davem@davemloft.net>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <4bf28fe8.914ed80a.01ca.fffff5f5@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-05-18 21:00:01 +08:00
|
|
|
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
struct perf_stat {
|
|
|
|
bool record;
|
|
|
|
struct perf_data_file file;
|
|
|
|
struct perf_session *session;
|
|
|
|
u64 bytes_written;
|
2015-11-05 22:40:55 +08:00
|
|
|
struct perf_tool tool;
|
2015-11-05 22:40:56 +08:00
|
|
|
bool maps_allocated;
|
|
|
|
struct cpu_map *cpus;
|
|
|
|
struct thread_map *threads;
|
2015-11-05 22:41:02 +08:00
|
|
|
enum aggr_mode aggr_mode;
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
};
|
|
|
|
|
|
|
|
static struct perf_stat perf_stat;
|
|
|
|
#define STAT_RECORD perf_stat.record
|
|
|
|
|
2009-12-31 16:05:50 +08:00
|
|
|
static volatile int done = 0;
|
|
|
|
|
2015-07-21 20:31:22 +08:00
|
|
|
static struct perf_stat_config stat_config = {
|
|
|
|
.aggr_mode = AGGR_GLOBAL,
|
2015-07-21 20:31:23 +08:00
|
|
|
.scale = true,
|
2015-07-21 20:31:22 +08:00
|
|
|
};
|
|
|
|
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
static inline void diff_timespec(struct timespec *r, struct timespec *a,
|
|
|
|
struct timespec *b)
|
|
|
|
{
|
|
|
|
r->tv_sec = a->tv_sec - b->tv_sec;
|
|
|
|
if (a->tv_nsec < b->tv_nsec) {
|
2016-08-09 01:57:04 +08:00
|
|
|
r->tv_nsec = a->tv_nsec + NSEC_PER_SEC - b->tv_nsec;
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
r->tv_sec--;
|
|
|
|
} else {
|
|
|
|
r->tv_nsec = a->tv_nsec - b->tv_nsec ;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-06-26 17:29:13 +08:00
|
|
|
static void perf_stat__reset_stats(void)
|
|
|
|
{
|
|
|
|
perf_evlist__reset_stats(evsel_list);
|
2015-06-03 22:25:59 +08:00
|
|
|
perf_stat__reset_shadow_stats();
|
2015-06-03 22:25:55 +08:00
|
|
|
}
|
|
|
|
|
2012-11-13 01:34:00 +08:00
|
|
|
static int create_perf_stat_counter(struct perf_evsel *evsel)
|
2009-04-20 21:37:32 +08:00
|
|
|
{
|
2011-01-04 02:39:04 +08:00
|
|
|
struct perf_event_attr *attr = &evsel->attr;
|
2011-10-25 20:42:19 +08:00
|
|
|
|
2015-07-21 20:31:23 +08:00
|
|
|
if (stat_config.scale)
|
2009-06-06 15:58:57 +08:00
|
|
|
attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
|
|
|
|
PERF_FORMAT_TOTAL_TIME_RUNNING;
|
2009-04-20 21:37:32 +08:00
|
|
|
|
2011-04-14 22:20:14 +08:00
|
|
|
attr->inherit = !no_inherit;
|
|
|
|
|
2015-11-25 23:36:54 +08:00
|
|
|
/*
|
|
|
|
* Some events get initialized with sample_(period/type) set,
|
|
|
|
* like tracepoints. Clear it up for counting.
|
|
|
|
*/
|
|
|
|
attr->sample_period = 0;
|
2016-01-06 05:09:05 +08:00
|
|
|
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
/*
|
|
|
|
* But set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
|
|
|
|
* while avoiding that older tools show confusing messages.
|
2016-01-06 05:09:05 +08:00
|
|
|
*
|
|
|
|
* However for pipe sessions we need to keep it zero,
|
|
|
|
* because script's perf_evsel__check_attr is triggered
|
|
|
|
* by attr->sample_type != 0, and we can't run it on
|
|
|
|
* stat sessions.
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
*/
|
2016-01-06 05:09:05 +08:00
|
|
|
if (!(STAT_RECORD && perf_stat.file.is_pipe))
|
|
|
|
attr->sample_type = PERF_SAMPLE_IDENTIFIER;
|
2015-11-25 23:36:54 +08:00
|
|
|
|
2015-12-03 17:06:44 +08:00
|
|
|
/*
|
|
|
|
* Disabling all counters initially, they will be enabled
|
|
|
|
* either manually by us or by kernel via enable_on_exec
|
|
|
|
* set later.
|
|
|
|
*/
|
2015-12-03 17:06:45 +08:00
|
|
|
if (perf_evsel__is_group_leader(evsel)) {
|
2015-12-03 17:06:44 +08:00
|
|
|
attr->disabled = 1;
|
|
|
|
|
2015-12-03 17:06:45 +08:00
|
|
|
/*
|
|
|
|
* In case of initial_delay we enable tracee
|
|
|
|
* events manually.
|
|
|
|
*/
|
|
|
|
if (target__none(&target) && !initial_delay)
|
2013-08-03 08:41:11 +08:00
|
|
|
attr->enable_on_exec = 1;
|
2009-04-20 21:37:32 +08:00
|
|
|
}
|
2010-03-23 00:10:28 +08:00
|
|
|
|
2015-12-03 17:06:45 +08:00
|
|
|
if (target__has_cpu(&target))
|
|
|
|
return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
|
|
|
|
|
2012-12-14 00:13:07 +08:00
|
|
|
return perf_evsel__open_per_thread(evsel, evsel_list->threads);
|
2009-04-20 21:37:32 +08:00
|
|
|
}
|
|
|
|
|
2009-05-29 15:10:54 +08:00
|
|
|
/*
|
|
|
|
* Does the counter have nsecs as a unit?
|
|
|
|
*/
|
2011-01-04 02:49:44 +08:00
|
|
|
static inline int nsec_counter(struct perf_evsel *evsel)
|
2009-05-29 15:10:54 +08:00
|
|
|
{
|
2011-01-04 02:49:44 +08:00
|
|
|
if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
|
|
|
|
perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
|
2009-05-29 15:10:54 +08:00
|
|
|
return 1;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2015-11-05 22:40:48 +08:00
|
|
|
static int process_synthesized_event(struct perf_tool *tool __maybe_unused,
|
|
|
|
union perf_event *event,
|
|
|
|
struct perf_sample *sample __maybe_unused,
|
|
|
|
struct machine *machine __maybe_unused)
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
{
|
2015-11-05 22:40:48 +08:00
|
|
|
if (perf_data_file__write(&perf_stat.file, event, event->header.size) < 0) {
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
pr_err("failed to write perf data, error: %m\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2015-11-05 22:40:48 +08:00
|
|
|
perf_stat.bytes_written += event->header.size;
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2015-11-05 22:40:56 +08:00
|
|
|
static int write_stat_round_event(u64 tm, u64 type)
|
2015-11-05 22:40:52 +08:00
|
|
|
{
|
2015-11-05 22:40:56 +08:00
|
|
|
return perf_event__synthesize_stat_round(NULL, tm, type,
|
2015-11-05 22:40:52 +08:00
|
|
|
process_synthesized_event,
|
|
|
|
NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
#define WRITE_STAT_ROUND_EVENT(time, interval) \
|
|
|
|
write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval)
|
|
|
|
|
2015-11-05 22:40:51 +08:00
|
|
|
#define SID(e, x, y) xyarray__entry(e->sample_id, x, y)
|
|
|
|
|
|
|
|
static int
|
|
|
|
perf_evsel__write_stat_event(struct perf_evsel *counter, u32 cpu, u32 thread,
|
|
|
|
struct perf_counts_values *count)
|
|
|
|
{
|
|
|
|
struct perf_sample_id *sid = SID(counter, cpu, thread);
|
|
|
|
|
|
|
|
return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count,
|
|
|
|
process_synthesized_event, NULL);
|
|
|
|
}
|
|
|
|
|
2010-11-16 17:05:01 +08:00
|
|
|
/*
|
|
|
|
* Read out the results of a single counter:
|
|
|
|
* do not aggregate counts across CPUs in system-wide mode
|
|
|
|
*/
|
2011-01-04 03:45:52 +08:00
|
|
|
static int read_counter(struct perf_evsel *counter)
|
2010-11-16 17:05:01 +08:00
|
|
|
{
|
2014-11-21 17:31:09 +08:00
|
|
|
int nthreads = thread_map__nr(evsel_list->threads);
|
2016-07-15 18:08:10 +08:00
|
|
|
int ncpus, cpu, thread;
|
|
|
|
|
|
|
|
if (target__has_cpu(&target))
|
|
|
|
ncpus = perf_evsel__nr_cpus(counter);
|
|
|
|
else
|
|
|
|
ncpus = 1;
|
2010-11-16 17:05:01 +08:00
|
|
|
|
2015-02-14 02:40:58 +08:00
|
|
|
if (!counter->supported)
|
|
|
|
return -ENOENT;
|
|
|
|
|
2014-11-21 17:31:09 +08:00
|
|
|
if (counter->system_wide)
|
|
|
|
nthreads = 1;
|
|
|
|
|
|
|
|
for (thread = 0; thread < nthreads; thread++) {
|
|
|
|
for (cpu = 0; cpu < ncpus; cpu++) {
|
2015-06-26 17:29:20 +08:00
|
|
|
struct perf_counts_values *count;
|
|
|
|
|
|
|
|
count = perf_counts(counter->counts, cpu, thread);
|
|
|
|
if (perf_evsel__read(counter, cpu, thread, count))
|
2014-11-21 17:31:09 +08:00
|
|
|
return -1;
|
2015-11-05 22:40:51 +08:00
|
|
|
|
|
|
|
if (STAT_RECORD) {
|
|
|
|
if (perf_evsel__write_stat_event(counter, cpu, thread, count)) {
|
|
|
|
pr_err("failed to write stat event\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
}
|
2016-04-28 04:00:51 +08:00
|
|
|
|
|
|
|
if (verbose > 1) {
|
|
|
|
fprintf(stat_config.output,
|
|
|
|
"%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
|
|
|
|
perf_evsel__name(counter),
|
|
|
|
cpu,
|
|
|
|
count->val, count->ena, count->run);
|
|
|
|
}
|
2014-11-21 17:31:09 +08:00
|
|
|
}
|
2010-11-16 17:05:01 +08:00
|
|
|
}
|
2011-01-04 03:45:52 +08:00
|
|
|
|
|
|
|
return 0;
|
2009-05-29 15:10:54 +08:00
|
|
|
}
|
|
|
|
|
perf stat: Avoid skew when reading events
When we don't have a tracee (i.e. we're attaching to a task or CPU),
counters can still be running after our workload finishes, and can still
be running as we read their values. As we read events one-by-one, there
can be arbitrary skew between values of events, even within a group.
This means that ratios within an event group are not reliable.
This skew can be seen if measuring a group of identical events, e.g:
# perf stat -a -C0 -e '{cycles,cycles}' sleep 1
To avoid this, we must stop groups from counting before we read the
values of any constituent events. This patch adds and makes use of a new
disable_counters() helper, which disables group leaders (and thus each
group as a whole). This mirrors the use of enable_counters() for
starting event groups in the absence of a tracee.
Closing a group leader splits the group, and without a disabled group
leader the newly split events will begin counting. Thus to ensure counts
are reliable we must defer closing group leaders until all counts have
been read. To do so this patch removes the event closing logic from the
read_counters() helper, explicitly closes the events using
perf_evlist__close(), which also aids legibility.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1470747869-3567-1-git-send-email-mark.rutland@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-09 21:04:29 +08:00
|
|
|
static void read_counters(void)
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
{
|
|
|
|
struct perf_evsel *counter;
|
|
|
|
|
2016-06-23 22:26:15 +08:00
|
|
|
evlist__for_each_entry(evsel_list, counter) {
|
2015-06-26 17:29:20 +08:00
|
|
|
if (read_counter(counter))
|
2015-09-02 06:52:46 +08:00
|
|
|
pr_debug("failed to read counter %s\n", counter->name);
|
2015-06-26 17:29:20 +08:00
|
|
|
|
2015-07-21 20:31:27 +08:00
|
|
|
if (perf_stat_process_counter(&stat_config, counter))
|
2015-06-26 17:29:20 +08:00
|
|
|
pr_warning("failed to process counter %s\n", counter->name);
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
}
|
2015-06-26 17:29:19 +08:00
|
|
|
}
|
|
|
|
|
2015-06-26 17:29:24 +08:00
|
|
|
static void process_interval(void)
|
2015-06-26 17:29:19 +08:00
|
|
|
{
|
|
|
|
struct timespec ts, rs;
|
|
|
|
|
perf stat: Avoid skew when reading events
When we don't have a tracee (i.e. we're attaching to a task or CPU),
counters can still be running after our workload finishes, and can still
be running as we read their values. As we read events one-by-one, there
can be arbitrary skew between values of events, even within a group.
This means that ratios within an event group are not reliable.
This skew can be seen if measuring a group of identical events, e.g:
# perf stat -a -C0 -e '{cycles,cycles}' sleep 1
To avoid this, we must stop groups from counting before we read the
values of any constituent events. This patch adds and makes use of a new
disable_counters() helper, which disables group leaders (and thus each
group as a whole). This mirrors the use of enable_counters() for
starting event groups in the absence of a tracee.
Closing a group leader splits the group, and without a disabled group
leader the newly split events will begin counting. Thus to ensure counts
are reliable we must defer closing group leaders until all counts have
been read. To do so this patch removes the event closing logic from the
read_counters() helper, explicitly closes the events using
perf_evlist__close(), which also aids legibility.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1470747869-3567-1-git-send-email-mark.rutland@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-09 21:04:29 +08:00
|
|
|
read_counters();
|
2013-02-14 20:57:27 +08:00
|
|
|
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
clock_gettime(CLOCK_MONOTONIC, &ts);
|
|
|
|
diff_timespec(&rs, &ts, &ref_time);
|
|
|
|
|
2015-11-05 22:40:52 +08:00
|
|
|
if (STAT_RECORD) {
|
2016-08-06 02:40:30 +08:00
|
|
|
if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSEC_PER_SEC + rs.tv_nsec, INTERVAL))
|
2015-11-05 22:40:52 +08:00
|
|
|
pr_err("failed to write stat round event\n");
|
|
|
|
}
|
|
|
|
|
2015-06-26 17:29:26 +08:00
|
|
|
print_counters(&rs, 0, NULL);
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
}
|
|
|
|
|
2015-12-03 17:06:44 +08:00
|
|
|
static void enable_counters(void)
|
2013-08-03 08:41:11 +08:00
|
|
|
{
|
2015-12-03 17:06:44 +08:00
|
|
|
if (initial_delay)
|
2016-08-09 01:57:04 +08:00
|
|
|
usleep(initial_delay * USEC_PER_MSEC);
|
2015-12-03 17:06:44 +08:00
|
|
|
|
|
|
|
/*
|
|
|
|
* We need to enable counters only if:
|
|
|
|
* - we don't have tracee (attaching to task or cpu)
|
|
|
|
* - we have initial delay configured
|
|
|
|
*/
|
|
|
|
if (!target__none(&target) || initial_delay)
|
2015-12-03 17:06:43 +08:00
|
|
|
perf_evlist__enable(evsel_list);
|
2013-08-03 08:41:11 +08:00
|
|
|
}
|
|
|
|
|
perf stat: Avoid skew when reading events
When we don't have a tracee (i.e. we're attaching to a task or CPU),
counters can still be running after our workload finishes, and can still
be running as we read their values. As we read events one-by-one, there
can be arbitrary skew between values of events, even within a group.
This means that ratios within an event group are not reliable.
This skew can be seen if measuring a group of identical events, e.g:
# perf stat -a -C0 -e '{cycles,cycles}' sleep 1
To avoid this, we must stop groups from counting before we read the
values of any constituent events. This patch adds and makes use of a new
disable_counters() helper, which disables group leaders (and thus each
group as a whole). This mirrors the use of enable_counters() for
starting event groups in the absence of a tracee.
Closing a group leader splits the group, and without a disabled group
leader the newly split events will begin counting. Thus to ensure counts
are reliable we must defer closing group leaders until all counts have
been read. To do so this patch removes the event closing logic from the
read_counters() helper, explicitly closes the events using
perf_evlist__close(), which also aids legibility.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1470747869-3567-1-git-send-email-mark.rutland@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-09 21:04:29 +08:00
|
|
|
static void disable_counters(void)
|
|
|
|
{
|
|
|
|
/*
|
|
|
|
* If we don't have tracee (attaching to task or cpu), counters may
|
|
|
|
* still be running. To get accurate group ratios, we must stop groups
|
|
|
|
* from counting before reading their constituent counters.
|
|
|
|
*/
|
|
|
|
if (!target__none(&target))
|
|
|
|
perf_evlist__disable(evsel_list);
|
|
|
|
}
|
|
|
|
|
2014-01-03 02:11:25 +08:00
|
|
|
static volatile int workload_exec_errno;
|
2013-12-29 02:45:08 +08:00
|
|
|
|
|
|
|
/*
|
|
|
|
* perf_evlist__prepare_workload will send a SIGUSR1
|
|
|
|
* if the fork fails, since we asked by setting its
|
|
|
|
* want_signal to true.
|
|
|
|
*/
|
2014-01-03 02:11:25 +08:00
|
|
|
static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
|
|
|
|
void *ucontext __maybe_unused)
|
2013-12-29 02:45:08 +08:00
|
|
|
{
|
2014-01-03 02:11:25 +08:00
|
|
|
workload_exec_errno = info->si_value.sival_int;
|
2013-12-29 02:45:08 +08:00
|
|
|
}
|
|
|
|
|
2015-11-05 22:40:54 +08:00
|
|
|
static bool has_unit(struct perf_evsel *counter)
|
|
|
|
{
|
|
|
|
return counter->unit && *counter->unit;
|
|
|
|
}
|
|
|
|
|
|
|
|
static bool has_scale(struct perf_evsel *counter)
|
|
|
|
{
|
|
|
|
return counter->scale != 1;
|
|
|
|
}
|
|
|
|
|
2015-11-05 22:40:50 +08:00
|
|
|
static int perf_stat_synthesize_config(bool is_pipe)
|
2015-11-05 22:40:48 +08:00
|
|
|
{
|
2015-11-05 22:40:54 +08:00
|
|
|
struct perf_evsel *counter;
|
2015-11-05 22:40:48 +08:00
|
|
|
int err;
|
|
|
|
|
2015-11-05 22:40:50 +08:00
|
|
|
if (is_pipe) {
|
|
|
|
err = perf_event__synthesize_attrs(NULL, perf_stat.session,
|
|
|
|
process_synthesized_event);
|
|
|
|
if (err < 0) {
|
|
|
|
pr_err("Couldn't synthesize attrs.\n");
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-11-05 22:40:54 +08:00
|
|
|
/*
|
|
|
|
* Synthesize other events stuff not carried within
|
|
|
|
* attr event - unit, scale, name
|
|
|
|
*/
|
2016-06-23 22:26:15 +08:00
|
|
|
evlist__for_each_entry(evsel_list, counter) {
|
2015-11-05 22:40:54 +08:00
|
|
|
if (!counter->supported)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Synthesize unit and scale only if it's defined.
|
|
|
|
*/
|
|
|
|
if (has_unit(counter)) {
|
|
|
|
err = perf_event__synthesize_event_update_unit(NULL, counter, process_synthesized_event);
|
|
|
|
if (err < 0) {
|
|
|
|
pr_err("Couldn't synthesize evsel unit.\n");
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (has_scale(counter)) {
|
|
|
|
err = perf_event__synthesize_event_update_scale(NULL, counter, process_synthesized_event);
|
|
|
|
if (err < 0) {
|
|
|
|
pr_err("Couldn't synthesize evsel scale.\n");
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (counter->own_cpus) {
|
|
|
|
err = perf_event__synthesize_event_update_cpus(NULL, counter, process_synthesized_event);
|
|
|
|
if (err < 0) {
|
|
|
|
pr_err("Couldn't synthesize evsel scale.\n");
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Name is needed only for pipe output,
|
|
|
|
* perf.data carries event names.
|
|
|
|
*/
|
|
|
|
if (is_pipe) {
|
|
|
|
err = perf_event__synthesize_event_update_name(NULL, counter, process_synthesized_event);
|
|
|
|
if (err < 0) {
|
|
|
|
pr_err("Couldn't synthesize evsel name.\n");
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-11-05 22:40:48 +08:00
|
|
|
err = perf_event__synthesize_thread_map2(NULL, evsel_list->threads,
|
|
|
|
process_synthesized_event,
|
|
|
|
NULL);
|
|
|
|
if (err < 0) {
|
|
|
|
pr_err("Couldn't synthesize thread map.\n");
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = perf_event__synthesize_cpu_map(NULL, evsel_list->cpus,
|
|
|
|
process_synthesized_event, NULL);
|
|
|
|
if (err < 0) {
|
|
|
|
pr_err("Couldn't synthesize thread map.\n");
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = perf_event__synthesize_stat_config(NULL, &stat_config,
|
|
|
|
process_synthesized_event, NULL);
|
|
|
|
if (err < 0) {
|
|
|
|
pr_err("Couldn't synthesize config.\n");
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2015-11-05 22:40:49 +08:00
|
|
|
#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
|
|
|
|
|
|
|
|
static int __store_counter_ids(struct perf_evsel *counter,
|
|
|
|
struct cpu_map *cpus,
|
|
|
|
struct thread_map *threads)
|
|
|
|
{
|
|
|
|
int cpu, thread;
|
|
|
|
|
|
|
|
for (cpu = 0; cpu < cpus->nr; cpu++) {
|
|
|
|
for (thread = 0; thread < threads->nr; thread++) {
|
|
|
|
int fd = FD(counter, cpu, thread);
|
|
|
|
|
|
|
|
if (perf_evlist__id_add_fd(evsel_list, counter,
|
|
|
|
cpu, thread, fd) < 0)
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int store_counter_ids(struct perf_evsel *counter)
|
|
|
|
{
|
|
|
|
struct cpu_map *cpus = counter->cpus;
|
|
|
|
struct thread_map *threads = counter->threads;
|
|
|
|
|
|
|
|
if (perf_evsel__alloc_id(counter, cpus->nr, threads->nr))
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
return __store_counter_ids(counter, cpus, threads);
|
|
|
|
}
|
|
|
|
|
2013-03-11 15:43:18 +08:00
|
|
|
static int __run_perf_stat(int argc, const char **argv)
|
2009-06-13 20:57:28 +08:00
|
|
|
{
|
2015-07-21 20:31:25 +08:00
|
|
|
int interval = stat_config.interval;
|
2012-12-14 02:10:58 +08:00
|
|
|
char msg[512];
|
2009-06-13 20:57:28 +08:00
|
|
|
unsigned long long t0, t1;
|
2012-11-13 01:34:00 +08:00
|
|
|
struct perf_evsel *counter;
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
struct timespec ts;
|
2013-11-13 00:58:49 +08:00
|
|
|
size_t l;
|
2009-06-13 20:57:28 +08:00
|
|
|
int status = 0;
|
2010-03-18 22:36:03 +08:00
|
|
|
const bool forks = (argc > 0);
|
2015-11-05 22:40:50 +08:00
|
|
|
bool is_pipe = STAT_RECORD ? perf_stat.file.is_pipe : false;
|
2016-09-16 23:50:03 +08:00
|
|
|
struct perf_evsel_config_term *err_term;
|
2009-06-13 20:57:28 +08:00
|
|
|
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
if (interval) {
|
2016-08-09 01:57:04 +08:00
|
|
|
ts.tv_sec = interval / USEC_PER_MSEC;
|
|
|
|
ts.tv_nsec = (interval % USEC_PER_MSEC) * NSEC_PER_MSEC;
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
} else {
|
|
|
|
ts.tv_sec = 1;
|
|
|
|
ts.tv_nsec = 0;
|
|
|
|
}
|
|
|
|
|
2009-12-31 16:05:50 +08:00
|
|
|
if (forks) {
|
2015-11-05 22:40:50 +08:00
|
|
|
if (perf_evlist__prepare_workload(evsel_list, &target, argv, is_pipe,
|
2014-01-04 01:56:49 +08:00
|
|
|
workload_exec_failed_signal) < 0) {
|
2013-03-11 15:43:18 +08:00
|
|
|
perror("failed to prepare workload");
|
|
|
|
return -1;
|
2009-12-31 16:05:50 +08:00
|
|
|
}
|
2013-09-30 17:01:11 +08:00
|
|
|
child_pid = evsel_list->workload.pid;
|
2009-06-29 19:13:21 +08:00
|
|
|
}
|
|
|
|
|
perf tools: Enable grouping logic for parsed events
This patch adds a functionality that allows to create event groups
based on the way they are specified on the command line. Adding
functionality to the '{}' group syntax introduced in earlier patch.
The current '--group/-g' option behaviour remains intact. If you
specify it for record/stat/top command, all the specified events
become members of a single group with the first event as a group
leader.
With the new '{}' group syntax you can create group like:
# perf record -e '{cycles,faults}' ls
resulting in single event group containing 'cycles' and 'faults'
events, with cycles event as group leader.
All groups are created with regards to threads and cpus. Thus
recording an event group within a 2 threads on server with
4 CPUs will create 8 separate groups.
Examples (first event in brackets is group leader):
# 1 group (cpu-clock,task-clock)
perf record --group -e cpu-clock,task-clock ls
perf record -e '{cpu-clock,task-clock}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock},{minor-faults,major-faults}' ls
# 1 group (cpu-clock,task-clock,minor-faults,major-faults)
perf record --group -e cpu-clock,task-clock -e minor-faults,major-faults ls
perf record -e '{cpu-clock,task-clock,minor-faults,major-faults}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock} -e '{minor-faults,major-faults}' \
-e instructions ls
# 1 group
# (cpu-clock,task-clock,minor-faults,major-faults,instructions)
perf record --group -e cpu-clock,task-clock \
-e minor-faults,major-faults -e instructions ls perf record -e
'{cpu-clock,task-clock,minor-faults,major-faults,instructions}' ls
It's possible to use standard event modifier for a group, which spans
over all events in the group and updates each event modifier settings,
for example:
# perf record -r '{faults:k,cache-references}:p'
resulting in ':kp' modifier being used for 'faults' and ':p' modifier
being used for 'cache-references' event.
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ulrich Drepper <drepper@gmail.com>
Link: http://lkml.kernel.org/n/tip-ho42u0wcr8mn1otkalqi13qp@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 18:22:36 +08:00
|
|
|
if (group)
|
2012-08-15 03:35:48 +08:00
|
|
|
perf_evlist__set_leader(evsel_list);
|
perf tools: Enable grouping logic for parsed events
This patch adds a functionality that allows to create event groups
based on the way they are specified on the command line. Adding
functionality to the '{}' group syntax introduced in earlier patch.
The current '--group/-g' option behaviour remains intact. If you
specify it for record/stat/top command, all the specified events
become members of a single group with the first event as a group
leader.
With the new '{}' group syntax you can create group like:
# perf record -e '{cycles,faults}' ls
resulting in single event group containing 'cycles' and 'faults'
events, with cycles event as group leader.
All groups are created with regards to threads and cpus. Thus
recording an event group within a 2 threads on server with
4 CPUs will create 8 separate groups.
Examples (first event in brackets is group leader):
# 1 group (cpu-clock,task-clock)
perf record --group -e cpu-clock,task-clock ls
perf record -e '{cpu-clock,task-clock}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock},{minor-faults,major-faults}' ls
# 1 group (cpu-clock,task-clock,minor-faults,major-faults)
perf record --group -e cpu-clock,task-clock -e minor-faults,major-faults ls
perf record -e '{cpu-clock,task-clock,minor-faults,major-faults}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock} -e '{minor-faults,major-faults}' \
-e instructions ls
# 1 group
# (cpu-clock,task-clock,minor-faults,major-faults,instructions)
perf record --group -e cpu-clock,task-clock \
-e minor-faults,major-faults -e instructions ls perf record -e
'{cpu-clock,task-clock,minor-faults,major-faults,instructions}' ls
It's possible to use standard event modifier for a group, which spans
over all events in the group and updates each event modifier settings,
for example:
# perf record -r '{faults:k,cache-references}:p'
resulting in ':kp' modifier being used for 'faults' and ':p' modifier
being used for 'cache-references' event.
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ulrich Drepper <drepper@gmail.com>
Link: http://lkml.kernel.org/n/tip-ho42u0wcr8mn1otkalqi13qp@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 18:22:36 +08:00
|
|
|
|
2016-06-23 22:26:15 +08:00
|
|
|
evlist__for_each_entry(evsel_list, counter) {
|
2016-05-13 03:25:18 +08:00
|
|
|
try_again:
|
2012-11-13 01:34:00 +08:00
|
|
|
if (create_perf_stat_counter(counter) < 0) {
|
2012-05-08 23:29:16 +08:00
|
|
|
/*
|
|
|
|
* PPC returns ENXIO for HW counters until 2.6.37
|
|
|
|
* (behavior changed with commit b0a873e).
|
|
|
|
*/
|
2011-12-02 06:38:33 +08:00
|
|
|
if (errno == EINVAL || errno == ENOSYS ||
|
2012-05-08 23:29:16 +08:00
|
|
|
errno == ENOENT || errno == EOPNOTSUPP ||
|
|
|
|
errno == ENXIO) {
|
2011-04-30 06:04:15 +08:00
|
|
|
if (verbose)
|
|
|
|
ui__warning("%s event is not supported by the kernel.\n",
|
2012-06-12 23:34:58 +08:00
|
|
|
perf_evsel__name(counter));
|
2011-05-30 22:55:59 +08:00
|
|
|
counter->supported = false;
|
2015-06-11 14:32:40 +08:00
|
|
|
|
|
|
|
if ((counter->leader != counter) ||
|
|
|
|
!(counter->leader->nr_members > 1))
|
|
|
|
continue;
|
2016-05-13 03:25:18 +08:00
|
|
|
} else if (perf_evsel__fallback(counter, errno, msg, sizeof(msg))) {
|
|
|
|
if (verbose)
|
|
|
|
ui__warning("%s\n", msg);
|
|
|
|
goto try_again;
|
|
|
|
}
|
2011-04-28 14:48:42 +08:00
|
|
|
|
2012-12-14 02:10:58 +08:00
|
|
|
perf_evsel__open_strerror(counter, &target,
|
|
|
|
errno, msg, sizeof(msg));
|
|
|
|
ui__error("%s\n", msg);
|
|
|
|
|
2011-01-04 03:48:12 +08:00
|
|
|
if (child_pid != -1)
|
|
|
|
kill(child_pid, SIGTERM);
|
2012-08-27 02:24:44 +08:00
|
|
|
|
2011-01-04 03:48:12 +08:00
|
|
|
return -1;
|
|
|
|
}
|
2011-05-30 22:55:59 +08:00
|
|
|
counter->supported = true;
|
2013-11-13 00:58:49 +08:00
|
|
|
|
|
|
|
l = strlen(counter->unit);
|
|
|
|
if (l > unit_width)
|
|
|
|
unit_width = l;
|
2015-11-05 22:40:49 +08:00
|
|
|
|
|
|
|
if (STAT_RECORD && store_counter_ids(counter))
|
|
|
|
return -1;
|
2010-03-23 00:10:28 +08:00
|
|
|
}
|
2009-06-13 20:57:28 +08:00
|
|
|
|
2015-03-25 06:23:47 +08:00
|
|
|
if (perf_evlist__apply_filters(evsel_list, &counter)) {
|
|
|
|
error("failed to set filter \"%s\" on event %s with %d (%s)\n",
|
|
|
|
counter->filter, perf_evsel__name(counter), errno,
|
tools: Introduce str_error_r()
The tools so far have been using the strerror_r() GNU variant, that
returns a string, be it the buffer passed or something else.
But that, besides being tricky in cases where we expect that the
function using strerror_r() returns the error formatted in a provided
buffer (we have to check if it returned something else and copy that
instead), breaks the build on systems not using glibc, like Alpine
Linux, where musl libc is used.
So, introduce yet another wrapper, str_error_r(), that has the GNU
interface, but uses the portable XSI variant of strerror_r(), so that
users rest asured that the provided buffer is used and it is what is
returned.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-d4t42fnf48ytlk8rjxs822tf@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-06 22:56:20 +08:00
|
|
|
str_error_r(errno, msg, sizeof(msg)));
|
2011-03-14 23:40:30 +08:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2016-09-16 23:50:03 +08:00
|
|
|
if (perf_evlist__apply_drv_configs(evsel_list, &counter, &err_term)) {
|
|
|
|
error("failed to set config \"%s\" on event %s with %d (%s)\n",
|
|
|
|
err_term->val.drv_cfg, perf_evsel__name(counter), errno,
|
|
|
|
str_error_r(errno, msg, sizeof(msg)));
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
if (STAT_RECORD) {
|
|
|
|
int err, fd = perf_data_file__fd(&perf_stat.file);
|
|
|
|
|
2015-11-05 22:40:50 +08:00
|
|
|
if (is_pipe) {
|
|
|
|
err = perf_header__write_pipe(perf_data_file__fd(&perf_stat.file));
|
|
|
|
} else {
|
|
|
|
err = perf_session__write_header(perf_stat.session, evsel_list,
|
|
|
|
fd, false);
|
|
|
|
}
|
|
|
|
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
if (err < 0)
|
|
|
|
return err;
|
2015-11-05 22:40:48 +08:00
|
|
|
|
2015-11-05 22:40:50 +08:00
|
|
|
err = perf_stat_synthesize_config(is_pipe);
|
2015-11-05 22:40:48 +08:00
|
|
|
if (err < 0)
|
|
|
|
return err;
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
}
|
|
|
|
|
2009-06-13 20:57:28 +08:00
|
|
|
/*
|
|
|
|
* Enable counters and exec the command:
|
|
|
|
*/
|
|
|
|
t0 = rdclock();
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
clock_gettime(CLOCK_MONOTONIC, &ref_time);
|
2009-06-13 20:57:28 +08:00
|
|
|
|
2009-12-31 16:05:50 +08:00
|
|
|
if (forks) {
|
2013-03-11 15:43:18 +08:00
|
|
|
perf_evlist__start_workload(evsel_list);
|
2015-12-03 17:06:44 +08:00
|
|
|
enable_counters();
|
2013-03-11 15:43:18 +08:00
|
|
|
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
if (interval) {
|
|
|
|
while (!waitpid(child_pid, &status, WNOHANG)) {
|
|
|
|
nanosleep(&ts, NULL);
|
2015-06-26 17:29:24 +08:00
|
|
|
process_interval();
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
}
|
|
|
|
}
|
2009-12-31 16:05:50 +08:00
|
|
|
wait(&status);
|
2013-12-29 02:45:08 +08:00
|
|
|
|
2014-01-03 02:11:25 +08:00
|
|
|
if (workload_exec_errno) {
|
tools: Introduce str_error_r()
The tools so far have been using the strerror_r() GNU variant, that
returns a string, be it the buffer passed or something else.
But that, besides being tricky in cases where we expect that the
function using strerror_r() returns the error formatted in a provided
buffer (we have to check if it returned something else and copy that
instead), breaks the build on systems not using glibc, like Alpine
Linux, where musl libc is used.
So, introduce yet another wrapper, str_error_r(), that has the GNU
interface, but uses the portable XSI variant of strerror_r(), so that
users rest asured that the provided buffer is used and it is what is
returned.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-d4t42fnf48ytlk8rjxs822tf@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-06 22:56:20 +08:00
|
|
|
const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg));
|
2014-01-03 02:11:25 +08:00
|
|
|
pr_err("Workload failed: %s\n", emsg);
|
2013-12-29 02:45:08 +08:00
|
|
|
return -1;
|
2014-01-03 02:11:25 +08:00
|
|
|
}
|
2013-12-29 02:45:08 +08:00
|
|
|
|
2011-09-16 05:31:40 +08:00
|
|
|
if (WIFSIGNALED(status))
|
|
|
|
psignal(WTERMSIG(status), argv[0]);
|
2009-12-31 16:05:50 +08:00
|
|
|
} else {
|
2015-12-03 17:06:44 +08:00
|
|
|
enable_counters();
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
while (!done) {
|
|
|
|
nanosleep(&ts, NULL);
|
|
|
|
if (interval)
|
2015-06-26 17:29:24 +08:00
|
|
|
process_interval();
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
}
|
2009-12-31 16:05:50 +08:00
|
|
|
}
|
2009-06-13 20:57:28 +08:00
|
|
|
|
perf stat: Avoid skew when reading events
When we don't have a tracee (i.e. we're attaching to a task or CPU),
counters can still be running after our workload finishes, and can still
be running as we read their values. As we read events one-by-one, there
can be arbitrary skew between values of events, even within a group.
This means that ratios within an event group are not reliable.
This skew can be seen if measuring a group of identical events, e.g:
# perf stat -a -C0 -e '{cycles,cycles}' sleep 1
To avoid this, we must stop groups from counting before we read the
values of any constituent events. This patch adds and makes use of a new
disable_counters() helper, which disables group leaders (and thus each
group as a whole). This mirrors the use of enable_counters() for
starting event groups in the absence of a tracee.
Closing a group leader splits the group, and without a disabled group
leader the newly split events will begin counting. Thus to ensure counts
are reliable we must defer closing group leaders until all counts have
been read. To do so this patch removes the event closing logic from the
read_counters() helper, explicitly closes the events using
perf_evlist__close(), which also aids legibility.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1470747869-3567-1-git-send-email-mark.rutland@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-09 21:04:29 +08:00
|
|
|
disable_counters();
|
|
|
|
|
2009-06-13 20:57:28 +08:00
|
|
|
t1 = rdclock();
|
|
|
|
|
2009-09-04 21:36:08 +08:00
|
|
|
update_stats(&walltime_nsecs_stats, t1 - t0);
|
2009-06-13 20:57:28 +08:00
|
|
|
|
perf stat: Avoid skew when reading events
When we don't have a tracee (i.e. we're attaching to a task or CPU),
counters can still be running after our workload finishes, and can still
be running as we read their values. As we read events one-by-one, there
can be arbitrary skew between values of events, even within a group.
This means that ratios within an event group are not reliable.
This skew can be seen if measuring a group of identical events, e.g:
# perf stat -a -C0 -e '{cycles,cycles}' sleep 1
To avoid this, we must stop groups from counting before we read the
values of any constituent events. This patch adds and makes use of a new
disable_counters() helper, which disables group leaders (and thus each
group as a whole). This mirrors the use of enable_counters() for
starting event groups in the absence of a tracee.
Closing a group leader splits the group, and without a disabled group
leader the newly split events will begin counting. Thus to ensure counts
are reliable we must defer closing group leaders until all counts have
been read. To do so this patch removes the event closing logic from the
read_counters() helper, explicitly closes the events using
perf_evlist__close(), which also aids legibility.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1470747869-3567-1-git-send-email-mark.rutland@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-09 21:04:29 +08:00
|
|
|
/*
|
|
|
|
* Closing a group leader splits the group, and as we only disable
|
|
|
|
* group leaders, results in remaining events becoming enabled. To
|
|
|
|
* avoid arbitrary skew, we must read all counters before closing any
|
|
|
|
* group leaders.
|
|
|
|
*/
|
|
|
|
read_counters();
|
|
|
|
perf_evlist__close(evsel_list);
|
2011-01-04 03:45:52 +08:00
|
|
|
|
2009-06-13 20:57:28 +08:00
|
|
|
return WEXITSTATUS(status);
|
|
|
|
}
|
|
|
|
|
2014-01-04 04:34:42 +08:00
|
|
|
static int run_perf_stat(int argc, const char **argv)
|
2012-10-23 19:40:14 +08:00
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
if (pre_cmd) {
|
|
|
|
ret = system(pre_cmd);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (sync_run)
|
|
|
|
sync();
|
|
|
|
|
|
|
|
ret = __run_perf_stat(argc, argv);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
if (post_cmd) {
|
|
|
|
ret = system(post_cmd);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2015-03-11 22:16:27 +08:00
|
|
|
static void print_running(u64 run, u64 ena)
|
|
|
|
{
|
|
|
|
if (csv_output) {
|
2015-07-21 20:31:24 +08:00
|
|
|
fprintf(stat_config.output, "%s%" PRIu64 "%s%.2f",
|
2015-03-11 22:16:27 +08:00
|
|
|
csv_sep,
|
|
|
|
run,
|
|
|
|
csv_sep,
|
|
|
|
ena ? 100.0 * run / ena : 100.0);
|
|
|
|
} else if (run != ena) {
|
2015-07-21 20:31:24 +08:00
|
|
|
fprintf(stat_config.output, " (%.2f%%)", 100.0 * run / ena);
|
2015-03-11 22:16:27 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-04-27 11:35:39 +08:00
|
|
|
static void print_noise_pct(double total, double avg)
|
|
|
|
{
|
2012-09-17 16:31:14 +08:00
|
|
|
double pct = rel_stddev_stats(total, avg);
|
2011-04-27 11:35:39 +08:00
|
|
|
|
perf stat: Add noise output for csv mode
Previously, when you want perf-stat to output the statistics in
csv mode, no information of the noise will be printed out.
For example right now we output this --repeat information:
./perf stat -r3 -x, sleep 1
1.164789,task-clock
8,context-switches
0,CPU-migrations
219,page-faults
3337800,cycles
With this patch, the output will be appended with an additional
entry for the noise value:
./perf stat -r3 -x, sleep 1
1.164789,task-clock,3.75%
8,context-switches,75.00%
0,CPU-migrations,100.00%
219,page-faults,0.00%
3337800,cycles,3.36%
Signed-off-by: Zhengyu He <zhengyuh@google.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Stephane Eranian <eranian@google.com>
Cc: Venkatesh Pallipadi <venki@google.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/1308861942-4945-1-git-send-email-zhengyuh@google.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-06-24 04:45:42 +08:00
|
|
|
if (csv_output)
|
2015-07-21 20:31:24 +08:00
|
|
|
fprintf(stat_config.output, "%s%.2f%%", csv_sep, pct);
|
2011-09-08 07:14:02 +08:00
|
|
|
else if (pct)
|
2015-07-21 20:31:24 +08:00
|
|
|
fprintf(stat_config.output, " ( +-%6.2f%% )", pct);
|
2011-04-27 11:35:39 +08:00
|
|
|
}
|
|
|
|
|
2011-01-04 02:39:04 +08:00
|
|
|
static void print_noise(struct perf_evsel *evsel, double avg)
|
2009-06-13 20:57:28 +08:00
|
|
|
{
|
2015-10-16 18:41:03 +08:00
|
|
|
struct perf_stat_evsel *ps;
|
2011-01-04 02:39:04 +08:00
|
|
|
|
2009-09-05 00:23:38 +08:00
|
|
|
if (run_count == 1)
|
|
|
|
return;
|
|
|
|
|
2011-01-04 02:39:04 +08:00
|
|
|
ps = evsel->priv;
|
2011-04-27 11:35:39 +08:00
|
|
|
print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
|
2009-06-13 20:57:28 +08:00
|
|
|
}
|
|
|
|
|
2013-02-14 20:57:29 +08:00
|
|
|
static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
|
2009-06-13 19:35:00 +08:00
|
|
|
{
|
2015-07-21 20:31:22 +08:00
|
|
|
switch (stat_config.aggr_mode) {
|
2013-02-14 20:57:29 +08:00
|
|
|
case AGGR_CORE:
|
2015-07-21 20:31:24 +08:00
|
|
|
fprintf(stat_config.output, "S%d-C%*d%s%*d%s",
|
2013-02-14 20:57:29 +08:00
|
|
|
cpu_map__id_to_socket(id),
|
|
|
|
csv_output ? 0 : -8,
|
|
|
|
cpu_map__id_to_cpu(id),
|
|
|
|
csv_sep,
|
|
|
|
csv_output ? 0 : 4,
|
|
|
|
nr,
|
|
|
|
csv_sep);
|
|
|
|
break;
|
2013-02-14 20:57:27 +08:00
|
|
|
case AGGR_SOCKET:
|
2015-07-21 20:31:24 +08:00
|
|
|
fprintf(stat_config.output, "S%*d%s%*d%s",
|
2013-02-06 22:46:02 +08:00
|
|
|
csv_output ? 0 : -5,
|
2013-02-14 20:57:29 +08:00
|
|
|
id,
|
2013-02-06 22:46:02 +08:00
|
|
|
csv_sep,
|
|
|
|
csv_output ? 0 : 4,
|
|
|
|
nr,
|
|
|
|
csv_sep);
|
2013-02-14 20:57:27 +08:00
|
|
|
break;
|
|
|
|
case AGGR_NONE:
|
2015-07-21 20:31:24 +08:00
|
|
|
fprintf(stat_config.output, "CPU%*d%s",
|
perf stat: Add csv-style output
This patch adds an option (-x/--field-separator) to print counts using a
CSV-style output. The user can pass a custom separator. This makes it very easy
to import counts directly into your favorite spreadsheet without having to
write scripts.
Example:
$ perf stat --field-separator=, -a -- sleep 1
4009.961740,task-clock-msecs
13,context-switches
2,CPU-migrations
189,page-faults
9596385684,cycles
3493659441,instructions
872897069,branches
41562,branch-misses
22424,cache-references
1289,cache-misses
Works also in non-aggregated mode:
$ perf stat -x , -a -A -- sleep 1
CPU0,1002.526168,task-clock-msecs
CPU1,1002.528365,task-clock-msecs
CPU2,1002.523360,task-clock-msecs
CPU3,1002.519878,task-clock-msecs
CPU0,1,context-switches
CPU1,5,context-switches
CPU2,5,context-switches
CPU3,6,context-switches
CPU0,0,CPU-migrations
CPU1,1,CPU-migrations
CPU2,0,CPU-migrations
CPU3,1,CPU-migrations
CPU0,2,page-faults
CPU1,6,page-faults
CPU2,9,page-faults
CPU3,174,page-faults
CPU0,2399439771,cycles
CPU1,2380369063,cycles
CPU2,2399142710,cycles
CPU3,2373161192,cycles
CPU0,872900618,instructions
CPU1,873030960,instructions
CPU2,872714525,instructions
CPU3,874460580,instructions
CPU0,221556839,branches
CPU1,218134342,branches
CPU2,218161730,branches
CPU3,218284093,branches
CPU0,18556,branch-misses
CPU1,1449,branch-misses
CPU2,3447,branch-misses
CPU3,12714,branch-misses
CPU0,8330,cache-references
CPU1,313844,cache-references
CPU2,47993728,cache-references
CPU3,826481,cache-references
CPU0,272,cache-misses
CPU1,5360,cache-misses
CPU2,1342193,cache-misses
CPU3,13992,cache-misses
This second version adds the ability to name a separator and uses
field-separator as the long option to be consistent with perf report.
Commiter note: Since we enabled --big-num by default in 201e0b0 and -x can't be
used with it, we need to notice if the user explicitely enabled or disabled -B,
add code to disable big_num if the user didn't explicitely set --big_num when
-x is used.
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederik Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: paulus@samba.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
LKML-Reference: <4cf68aa7.0fedd80a.5294.1203@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-02 00:49:05 +08:00
|
|
|
csv_output ? 0 : -4,
|
2013-02-14 20:57:29 +08:00
|
|
|
perf_evsel__cpus(evsel)->map[id], csv_sep);
|
2013-02-14 20:57:27 +08:00
|
|
|
break;
|
perf stat: Introduce --per-thread option
Currently all the -p option PID arguments tasks values get aggregated
and printed as single values.
Adding --per-tasks option to print values per task.
$ perf stat -e cycles,instructions --per-thread -p 30190,30242
^C
Performance counter stats for process id '30190,30242':
cat-30190 0 cycles
yes-30242 3,842,525,421 cycles
cat-30190 0 instructions
yes-30242 10,370,817,010 instructions
1.143155657 seconds time elapsed
Also works under interval mode:
$ perf stat -e cycles,instructions --per-thread -p 30190,30242 -I 1000
# time comm-pid counts unit events
1.000073435 cat-30190 89,058 cycles
1.000073435 yes-30242 3,360,786,902 cycles (100.00%)
1.000073435 cat-30190 14,066 instructions
1.000073435 yes-30242 9,069,937,462 instructions
2.000204830 cat-30190 0 cycles
2.000204830 yes-30242 3,351,667,626 cycles
2.000204830 cat-30190 0 instructions
2.000204830 yes-30242 9,045,796,885 instructions
^C 2.771286639 cat-30190 0 cycles
2.771286639 yes-30242 2,593,884,166 cycles
2.771286639 cat-30190 0 instructions
2.771286639 yes-30242 7,001,171,191 instructions
It works only with -t and -p options, otherwise following error is
printed:
$ perf stat -e cycles --per-thread -I 1000 ls
The --per-thread option is only available when monitoring via -p -t options.
-p, --pid <pid> stat events on existing process id
-t, --tid <tid> stat events on existing thread id
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-23-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-06-26 17:29:27 +08:00
|
|
|
case AGGR_THREAD:
|
2015-07-21 20:31:24 +08:00
|
|
|
fprintf(stat_config.output, "%*s-%*d%s",
|
perf stat: Introduce --per-thread option
Currently all the -p option PID arguments tasks values get aggregated
and printed as single values.
Adding --per-tasks option to print values per task.
$ perf stat -e cycles,instructions --per-thread -p 30190,30242
^C
Performance counter stats for process id '30190,30242':
cat-30190 0 cycles
yes-30242 3,842,525,421 cycles
cat-30190 0 instructions
yes-30242 10,370,817,010 instructions
1.143155657 seconds time elapsed
Also works under interval mode:
$ perf stat -e cycles,instructions --per-thread -p 30190,30242 -I 1000
# time comm-pid counts unit events
1.000073435 cat-30190 89,058 cycles
1.000073435 yes-30242 3,360,786,902 cycles (100.00%)
1.000073435 cat-30190 14,066 instructions
1.000073435 yes-30242 9,069,937,462 instructions
2.000204830 cat-30190 0 cycles
2.000204830 yes-30242 3,351,667,626 cycles
2.000204830 cat-30190 0 instructions
2.000204830 yes-30242 9,045,796,885 instructions
^C 2.771286639 cat-30190 0 cycles
2.771286639 yes-30242 2,593,884,166 cycles
2.771286639 cat-30190 0 instructions
2.771286639 yes-30242 7,001,171,191 instructions
It works only with -t and -p options, otherwise following error is
printed:
$ perf stat -e cycles --per-thread -I 1000 ls
The --per-thread option is only available when monitoring via -p -t options.
-p, --pid <pid> stat events on existing process id
-t, --tid <tid> stat events on existing thread id
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-23-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-06-26 17:29:27 +08:00
|
|
|
csv_output ? 0 : 16,
|
|
|
|
thread_map__comm(evsel->threads, id),
|
|
|
|
csv_output ? 0 : -8,
|
|
|
|
thread_map__pid(evsel->threads, id),
|
|
|
|
csv_sep);
|
|
|
|
break;
|
2013-02-14 20:57:27 +08:00
|
|
|
case AGGR_GLOBAL:
|
2015-10-16 18:41:04 +08:00
|
|
|
case AGGR_UNSET:
|
2013-02-14 20:57:27 +08:00
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2016-01-31 01:06:49 +08:00
|
|
|
struct outstate {
|
|
|
|
FILE *fh;
|
|
|
|
bool newline;
|
perf stat: Add support for metrics in interval mode
Now that we can modify the metrics printout functions easily, it's
straight forward to support metric printing for interval mode. All that
is needed is to print the time stamp on every new line. Pass the prefix
into the context and print it out.
v2: Move wrong hunk to here.
Committer note:
Before:
[root@jouet ~]# perf stat -I 1000 -e instructions,cycles sleep 1
# time counts unit events
1.000168216 538,913 instructions
1.000168216 748,765 cycles
1.000660048 153,741 instructions
1.000660048 214,066 cycles
After:
# perf stat -I 1000 -e instructions,cycles sleep 1
# time counts unit events
1.000215928 519,620 instructions # 0.69 insn per cycle
1.000215928 752,003 cycles
1.000946033 148,502 instructions # 0.33 insn per cycle
1.000946033 160,104 cycles
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1454173616-17710-3-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-01-31 01:06:50 +08:00
|
|
|
const char *prefix;
|
perf stat: Implement CSV metrics output
Now support CSV output for metrics. With the new output callbacks this
is relatively straight forward by creating new callbacks.
This allows to easily plot metrics from CSV files.
The new line callback needs to know the number of fields to skip them
correctly
Example output before:
% perf stat -x, true
0.200687,,task-clock,200687,100.00
0,,context-switches,200687,100.00
0,,cpu-migrations,200687,100.00
40,,page-faults,200687,100.00
730871,,cycles,203601,100.00
551056,,stalled-cycles-frontend,203601,100.00
<not supported>,,stalled-cycles-backend,0,100.00
385523,,instructions,203601,100.00
78028,,branches,203601,100.00
3946,,branch-misses,203601,100.00
After:
% perf stat -x, true
.502457,,task-clock,502457,100.00,0.485,CPUs utilized
0,,context-switches,502457,100.00,0.000,K/sec
0,,cpu-migrations,502457,100.00,0.000,K/sec
45,,page-faults,502457,100.00,0.090,M/sec
644692,,cycles,509102,100.00,1.283,GHz
423470,,stalled-cycles-frontend,509102,100.00,65.69,frontend cycles idle
<not supported>,,stalled-cycles-backend,0,100.00,,,,
492701,,instructions,509102,100.00,0.76,insn per cycle
,,,,,0.86,stalled cycles per insn
97767,,branches,509102,100.00,194.578,M/sec
4788,,branch-misses,509102,100.00,4.90,of all branches
or easier readable
$ perf stat -x, -o x.csv true
$ column -s, -t x.csv
0.490635 task-clock 490635 100.00 0.489 CPUs utilized
0 context-switches 490635 100.00 0.000 K/sec
0 cpu-migrations 490635 100.00 0.000 K/sec
45 page-faults 490635 100.00 0.092 M/sec
629080 cycles 497698 100.00 1.282 GHz
409498 stalled-cycles-frontend 497698 100.00 65.09 frontend cycles idle
<not supported> stalled-cycles-backend 0 100.00
491424 instructions 497698 100.00 0.78 insn per cycle
0.83 stalled cycles per insn
97278 branches 497698 100.00 198.270 M/sec
4569 branch-misses 497698 100.00 4.70 of all branches
Two new fields are added: metric value and metric name.
v2: Split out function argument changes
v3: Reenable metrics for real.
v4: Fix wrong hunk from refactoring.
v5: Remove extra "noise" printing (Jiri), but add it to the not counted case.
Print empty metrics for not counted.
v6: Avoid outputting metric on empty format.
v7: Print metric at the end
v8: Remove extra run, ena fields
v9: Avoid extra new line for unsupported counters
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/r/1456785386-19481-3-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-01 06:36:21 +08:00
|
|
|
int nfields;
|
perf stat: Support metrics in --per-core/socket mode
Enable metrics printing in --per-core / --per-socket mode. We need to
save the shadow metrics in a unique place. Always use the first CPU in
the aggregation. Then use the same CPU to retrieve the shadow value
later.
Example output:
% perf stat --per-core -a ./BC1s
Performance counter stats for 'system wide':
S0-C0 2 2966.020381 task-clock (msec) # 2.004 CPUs utilized (100.00%)
S0-C0 2 49 context-switches # 0.017 K/sec (100.00%)
S0-C0 2 4 cpu-migrations # 0.001 K/sec (100.00%)
S0-C0 2 467 page-faults # 0.157 K/sec
S0-C0 2 4,599,061,773 cycles # 1.551 GHz (100.00%)
S0-C0 2 9,755,886,883 instructions # 2.12 insn per cycle (100.00%)
S0-C0 2 1,906,272,125 branches # 642.704 M/sec (100.00%)
S0-C0 2 81,180,867 branch-misses # 4.26% of all branches
S0-C1 2 2965.995373 task-clock (msec) # 2.003 CPUs utilized (100.00%)
S0-C1 2 62 context-switches # 0.021 K/sec (100.00%)
S0-C1 2 8 cpu-migrations # 0.003 K/sec (100.00%)
S0-C1 2 281 page-faults # 0.095 K/sec
S0-C1 2 6,347,290 cycles # 0.002 GHz (100.00%)
S0-C1 2 4,654,156 instructions # 0.73 insn per cycle (100.00%)
S0-C1 2 947,121 branches # 0.319 M/sec (100.00%)
S0-C1 2 37,322 branch-misses # 3.94% of all branches
1.480409747 seconds time elapsed
v2: Rebase to older patches
v3: Document shadow cpus. Fix aggr_get_id argument. Fix -A shadows (Jiri)
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1456785386-19481-4-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-01 06:36:22 +08:00
|
|
|
int id, nr;
|
|
|
|
struct perf_evsel *evsel;
|
2016-01-31 01:06:49 +08:00
|
|
|
};
|
|
|
|
|
|
|
|
#define METRIC_LEN 35
|
|
|
|
|
|
|
|
static void new_line_std(void *ctx)
|
|
|
|
{
|
|
|
|
struct outstate *os = ctx;
|
|
|
|
|
|
|
|
os->newline = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void do_new_line_std(struct outstate *os)
|
|
|
|
{
|
|
|
|
fputc('\n', os->fh);
|
perf stat: Add support for metrics in interval mode
Now that we can modify the metrics printout functions easily, it's
straight forward to support metric printing for interval mode. All that
is needed is to print the time stamp on every new line. Pass the prefix
into the context and print it out.
v2: Move wrong hunk to here.
Committer note:
Before:
[root@jouet ~]# perf stat -I 1000 -e instructions,cycles sleep 1
# time counts unit events
1.000168216 538,913 instructions
1.000168216 748,765 cycles
1.000660048 153,741 instructions
1.000660048 214,066 cycles
After:
# perf stat -I 1000 -e instructions,cycles sleep 1
# time counts unit events
1.000215928 519,620 instructions # 0.69 insn per cycle
1.000215928 752,003 cycles
1.000946033 148,502 instructions # 0.33 insn per cycle
1.000946033 160,104 cycles
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1454173616-17710-3-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-01-31 01:06:50 +08:00
|
|
|
fputs(os->prefix, os->fh);
|
perf stat: Support metrics in --per-core/socket mode
Enable metrics printing in --per-core / --per-socket mode. We need to
save the shadow metrics in a unique place. Always use the first CPU in
the aggregation. Then use the same CPU to retrieve the shadow value
later.
Example output:
% perf stat --per-core -a ./BC1s
Performance counter stats for 'system wide':
S0-C0 2 2966.020381 task-clock (msec) # 2.004 CPUs utilized (100.00%)
S0-C0 2 49 context-switches # 0.017 K/sec (100.00%)
S0-C0 2 4 cpu-migrations # 0.001 K/sec (100.00%)
S0-C0 2 467 page-faults # 0.157 K/sec
S0-C0 2 4,599,061,773 cycles # 1.551 GHz (100.00%)
S0-C0 2 9,755,886,883 instructions # 2.12 insn per cycle (100.00%)
S0-C0 2 1,906,272,125 branches # 642.704 M/sec (100.00%)
S0-C0 2 81,180,867 branch-misses # 4.26% of all branches
S0-C1 2 2965.995373 task-clock (msec) # 2.003 CPUs utilized (100.00%)
S0-C1 2 62 context-switches # 0.021 K/sec (100.00%)
S0-C1 2 8 cpu-migrations # 0.003 K/sec (100.00%)
S0-C1 2 281 page-faults # 0.095 K/sec
S0-C1 2 6,347,290 cycles # 0.002 GHz (100.00%)
S0-C1 2 4,654,156 instructions # 0.73 insn per cycle (100.00%)
S0-C1 2 947,121 branches # 0.319 M/sec (100.00%)
S0-C1 2 37,322 branch-misses # 3.94% of all branches
1.480409747 seconds time elapsed
v2: Rebase to older patches
v3: Document shadow cpus. Fix aggr_get_id argument. Fix -A shadows (Jiri)
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1456785386-19481-4-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-01 06:36:22 +08:00
|
|
|
aggr_printout(os->evsel, os->id, os->nr);
|
2016-01-31 01:06:49 +08:00
|
|
|
if (stat_config.aggr_mode == AGGR_NONE)
|
|
|
|
fprintf(os->fh, " ");
|
|
|
|
fprintf(os->fh, " ");
|
|
|
|
}
|
|
|
|
|
|
|
|
static void print_metric_std(void *ctx, const char *color, const char *fmt,
|
|
|
|
const char *unit, double val)
|
|
|
|
{
|
|
|
|
struct outstate *os = ctx;
|
|
|
|
FILE *out = os->fh;
|
|
|
|
int n;
|
|
|
|
bool newline = os->newline;
|
|
|
|
|
|
|
|
os->newline = false;
|
|
|
|
|
|
|
|
if (unit == NULL || fmt == NULL) {
|
|
|
|
fprintf(out, "%-*s", METRIC_LEN, "");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (newline)
|
|
|
|
do_new_line_std(os);
|
|
|
|
|
|
|
|
n = fprintf(out, " # ");
|
|
|
|
if (color)
|
|
|
|
n += color_fprintf(out, color, fmt, val);
|
|
|
|
else
|
|
|
|
n += fprintf(out, fmt, val);
|
|
|
|
fprintf(out, " %-*s", METRIC_LEN - n - 1, unit);
|
|
|
|
}
|
|
|
|
|
perf stat: Implement CSV metrics output
Now support CSV output for metrics. With the new output callbacks this
is relatively straight forward by creating new callbacks.
This allows to easily plot metrics from CSV files.
The new line callback needs to know the number of fields to skip them
correctly
Example output before:
% perf stat -x, true
0.200687,,task-clock,200687,100.00
0,,context-switches,200687,100.00
0,,cpu-migrations,200687,100.00
40,,page-faults,200687,100.00
730871,,cycles,203601,100.00
551056,,stalled-cycles-frontend,203601,100.00
<not supported>,,stalled-cycles-backend,0,100.00
385523,,instructions,203601,100.00
78028,,branches,203601,100.00
3946,,branch-misses,203601,100.00
After:
% perf stat -x, true
.502457,,task-clock,502457,100.00,0.485,CPUs utilized
0,,context-switches,502457,100.00,0.000,K/sec
0,,cpu-migrations,502457,100.00,0.000,K/sec
45,,page-faults,502457,100.00,0.090,M/sec
644692,,cycles,509102,100.00,1.283,GHz
423470,,stalled-cycles-frontend,509102,100.00,65.69,frontend cycles idle
<not supported>,,stalled-cycles-backend,0,100.00,,,,
492701,,instructions,509102,100.00,0.76,insn per cycle
,,,,,0.86,stalled cycles per insn
97767,,branches,509102,100.00,194.578,M/sec
4788,,branch-misses,509102,100.00,4.90,of all branches
or easier readable
$ perf stat -x, -o x.csv true
$ column -s, -t x.csv
0.490635 task-clock 490635 100.00 0.489 CPUs utilized
0 context-switches 490635 100.00 0.000 K/sec
0 cpu-migrations 490635 100.00 0.000 K/sec
45 page-faults 490635 100.00 0.092 M/sec
629080 cycles 497698 100.00 1.282 GHz
409498 stalled-cycles-frontend 497698 100.00 65.09 frontend cycles idle
<not supported> stalled-cycles-backend 0 100.00
491424 instructions 497698 100.00 0.78 insn per cycle
0.83 stalled cycles per insn
97278 branches 497698 100.00 198.270 M/sec
4569 branch-misses 497698 100.00 4.70 of all branches
Two new fields are added: metric value and metric name.
v2: Split out function argument changes
v3: Reenable metrics for real.
v4: Fix wrong hunk from refactoring.
v5: Remove extra "noise" printing (Jiri), but add it to the not counted case.
Print empty metrics for not counted.
v6: Avoid outputting metric on empty format.
v7: Print metric at the end
v8: Remove extra run, ena fields
v9: Avoid extra new line for unsupported counters
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/r/1456785386-19481-3-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-01 06:36:21 +08:00
|
|
|
static void new_line_csv(void *ctx)
|
|
|
|
{
|
|
|
|
struct outstate *os = ctx;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
fputc('\n', os->fh);
|
|
|
|
if (os->prefix)
|
|
|
|
fprintf(os->fh, "%s%s", os->prefix, csv_sep);
|
perf stat: Support metrics in --per-core/socket mode
Enable metrics printing in --per-core / --per-socket mode. We need to
save the shadow metrics in a unique place. Always use the first CPU in
the aggregation. Then use the same CPU to retrieve the shadow value
later.
Example output:
% perf stat --per-core -a ./BC1s
Performance counter stats for 'system wide':
S0-C0 2 2966.020381 task-clock (msec) # 2.004 CPUs utilized (100.00%)
S0-C0 2 49 context-switches # 0.017 K/sec (100.00%)
S0-C0 2 4 cpu-migrations # 0.001 K/sec (100.00%)
S0-C0 2 467 page-faults # 0.157 K/sec
S0-C0 2 4,599,061,773 cycles # 1.551 GHz (100.00%)
S0-C0 2 9,755,886,883 instructions # 2.12 insn per cycle (100.00%)
S0-C0 2 1,906,272,125 branches # 642.704 M/sec (100.00%)
S0-C0 2 81,180,867 branch-misses # 4.26% of all branches
S0-C1 2 2965.995373 task-clock (msec) # 2.003 CPUs utilized (100.00%)
S0-C1 2 62 context-switches # 0.021 K/sec (100.00%)
S0-C1 2 8 cpu-migrations # 0.003 K/sec (100.00%)
S0-C1 2 281 page-faults # 0.095 K/sec
S0-C1 2 6,347,290 cycles # 0.002 GHz (100.00%)
S0-C1 2 4,654,156 instructions # 0.73 insn per cycle (100.00%)
S0-C1 2 947,121 branches # 0.319 M/sec (100.00%)
S0-C1 2 37,322 branch-misses # 3.94% of all branches
1.480409747 seconds time elapsed
v2: Rebase to older patches
v3: Document shadow cpus. Fix aggr_get_id argument. Fix -A shadows (Jiri)
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1456785386-19481-4-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-01 06:36:22 +08:00
|
|
|
aggr_printout(os->evsel, os->id, os->nr);
|
perf stat: Implement CSV metrics output
Now support CSV output for metrics. With the new output callbacks this
is relatively straight forward by creating new callbacks.
This allows to easily plot metrics from CSV files.
The new line callback needs to know the number of fields to skip them
correctly
Example output before:
% perf stat -x, true
0.200687,,task-clock,200687,100.00
0,,context-switches,200687,100.00
0,,cpu-migrations,200687,100.00
40,,page-faults,200687,100.00
730871,,cycles,203601,100.00
551056,,stalled-cycles-frontend,203601,100.00
<not supported>,,stalled-cycles-backend,0,100.00
385523,,instructions,203601,100.00
78028,,branches,203601,100.00
3946,,branch-misses,203601,100.00
After:
% perf stat -x, true
.502457,,task-clock,502457,100.00,0.485,CPUs utilized
0,,context-switches,502457,100.00,0.000,K/sec
0,,cpu-migrations,502457,100.00,0.000,K/sec
45,,page-faults,502457,100.00,0.090,M/sec
644692,,cycles,509102,100.00,1.283,GHz
423470,,stalled-cycles-frontend,509102,100.00,65.69,frontend cycles idle
<not supported>,,stalled-cycles-backend,0,100.00,,,,
492701,,instructions,509102,100.00,0.76,insn per cycle
,,,,,0.86,stalled cycles per insn
97767,,branches,509102,100.00,194.578,M/sec
4788,,branch-misses,509102,100.00,4.90,of all branches
or easier readable
$ perf stat -x, -o x.csv true
$ column -s, -t x.csv
0.490635 task-clock 490635 100.00 0.489 CPUs utilized
0 context-switches 490635 100.00 0.000 K/sec
0 cpu-migrations 490635 100.00 0.000 K/sec
45 page-faults 490635 100.00 0.092 M/sec
629080 cycles 497698 100.00 1.282 GHz
409498 stalled-cycles-frontend 497698 100.00 65.09 frontend cycles idle
<not supported> stalled-cycles-backend 0 100.00
491424 instructions 497698 100.00 0.78 insn per cycle
0.83 stalled cycles per insn
97278 branches 497698 100.00 198.270 M/sec
4569 branch-misses 497698 100.00 4.70 of all branches
Two new fields are added: metric value and metric name.
v2: Split out function argument changes
v3: Reenable metrics for real.
v4: Fix wrong hunk from refactoring.
v5: Remove extra "noise" printing (Jiri), but add it to the not counted case.
Print empty metrics for not counted.
v6: Avoid outputting metric on empty format.
v7: Print metric at the end
v8: Remove extra run, ena fields
v9: Avoid extra new line for unsupported counters
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/r/1456785386-19481-3-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-01 06:36:21 +08:00
|
|
|
for (i = 0; i < os->nfields; i++)
|
|
|
|
fputs(csv_sep, os->fh);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void print_metric_csv(void *ctx,
|
|
|
|
const char *color __maybe_unused,
|
|
|
|
const char *fmt, const char *unit, double val)
|
|
|
|
{
|
|
|
|
struct outstate *os = ctx;
|
|
|
|
FILE *out = os->fh;
|
|
|
|
char buf[64], *vals, *ends;
|
|
|
|
|
|
|
|
if (unit == NULL || fmt == NULL) {
|
|
|
|
fprintf(out, "%s%s%s%s", csv_sep, csv_sep, csv_sep, csv_sep);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
snprintf(buf, sizeof(buf), fmt, val);
|
|
|
|
vals = buf;
|
|
|
|
while (isspace(*vals))
|
|
|
|
vals++;
|
|
|
|
ends = vals;
|
|
|
|
while (isdigit(*ends) || *ends == '.')
|
|
|
|
ends++;
|
|
|
|
*ends = 0;
|
|
|
|
while (isspace(*unit))
|
|
|
|
unit++;
|
|
|
|
fprintf(out, "%s%s%s%s", csv_sep, vals, csv_sep, unit);
|
|
|
|
}
|
|
|
|
|
2016-03-04 07:57:36 +08:00
|
|
|
#define METRIC_ONLY_LEN 20
|
|
|
|
|
|
|
|
/* Filter out some columns that don't work well in metrics only mode */
|
|
|
|
|
|
|
|
static bool valid_only_metric(const char *unit)
|
|
|
|
{
|
|
|
|
if (!unit)
|
|
|
|
return false;
|
|
|
|
if (strstr(unit, "/sec") ||
|
|
|
|
strstr(unit, "hz") ||
|
|
|
|
strstr(unit, "Hz") ||
|
|
|
|
strstr(unit, "CPUs utilized"))
|
|
|
|
return false;
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
static const char *fixunit(char *buf, struct perf_evsel *evsel,
|
|
|
|
const char *unit)
|
|
|
|
{
|
|
|
|
if (!strncmp(unit, "of all", 6)) {
|
|
|
|
snprintf(buf, 1024, "%s %s", perf_evsel__name(evsel),
|
|
|
|
unit);
|
|
|
|
return buf;
|
|
|
|
}
|
|
|
|
return unit;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void print_metric_only(void *ctx, const char *color, const char *fmt,
|
|
|
|
const char *unit, double val)
|
|
|
|
{
|
|
|
|
struct outstate *os = ctx;
|
|
|
|
FILE *out = os->fh;
|
|
|
|
int n;
|
|
|
|
char buf[1024];
|
|
|
|
unsigned mlen = METRIC_ONLY_LEN;
|
|
|
|
|
|
|
|
if (!valid_only_metric(unit))
|
|
|
|
return;
|
|
|
|
unit = fixunit(buf, os->evsel, unit);
|
|
|
|
if (color)
|
|
|
|
n = color_fprintf(out, color, fmt, val);
|
|
|
|
else
|
|
|
|
n = fprintf(out, fmt, val);
|
|
|
|
if (n > METRIC_ONLY_LEN)
|
|
|
|
n = METRIC_ONLY_LEN;
|
|
|
|
if (mlen < strlen(unit))
|
|
|
|
mlen = strlen(unit) + 1;
|
|
|
|
fprintf(out, "%*s", mlen - n, "");
|
|
|
|
}
|
|
|
|
|
|
|
|
static void print_metric_only_csv(void *ctx, const char *color __maybe_unused,
|
|
|
|
const char *fmt,
|
|
|
|
const char *unit, double val)
|
|
|
|
{
|
|
|
|
struct outstate *os = ctx;
|
|
|
|
FILE *out = os->fh;
|
|
|
|
char buf[64], *vals, *ends;
|
|
|
|
char tbuf[1024];
|
|
|
|
|
|
|
|
if (!valid_only_metric(unit))
|
|
|
|
return;
|
|
|
|
unit = fixunit(tbuf, os->evsel, unit);
|
|
|
|
snprintf(buf, sizeof buf, fmt, val);
|
|
|
|
vals = buf;
|
|
|
|
while (isspace(*vals))
|
|
|
|
vals++;
|
|
|
|
ends = vals;
|
|
|
|
while (isdigit(*ends) || *ends == '.')
|
|
|
|
ends++;
|
|
|
|
*ends = 0;
|
|
|
|
fprintf(out, "%s%s", vals, csv_sep);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void new_line_metric(void *ctx __maybe_unused)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
static void print_metric_header(void *ctx, const char *color __maybe_unused,
|
|
|
|
const char *fmt __maybe_unused,
|
|
|
|
const char *unit, double val __maybe_unused)
|
|
|
|
{
|
|
|
|
struct outstate *os = ctx;
|
|
|
|
char tbuf[1024];
|
|
|
|
|
|
|
|
if (!valid_only_metric(unit))
|
|
|
|
return;
|
|
|
|
unit = fixunit(tbuf, os->evsel, unit);
|
|
|
|
if (csv_output)
|
|
|
|
fprintf(os->fh, "%s%s", unit, csv_sep);
|
|
|
|
else
|
|
|
|
fprintf(os->fh, "%-*s ", METRIC_ONLY_LEN, unit);
|
|
|
|
}
|
|
|
|
|
2014-09-25 04:50:46 +08:00
|
|
|
static void nsec_printout(int id, int nr, struct perf_evsel *evsel, double avg)
|
2013-02-14 20:57:27 +08:00
|
|
|
{
|
2015-07-21 20:31:24 +08:00
|
|
|
FILE *output = stat_config.output;
|
2016-08-09 01:57:04 +08:00
|
|
|
double msecs = avg / NSEC_PER_MSEC;
|
2013-11-13 00:58:49 +08:00
|
|
|
const char *fmt_v, *fmt_n;
|
2013-09-29 04:28:00 +08:00
|
|
|
char name[25];
|
2013-02-14 20:57:27 +08:00
|
|
|
|
2013-11-13 00:58:49 +08:00
|
|
|
fmt_v = csv_output ? "%.6f%s" : "%18.6f%s";
|
|
|
|
fmt_n = csv_output ? "%s" : "%-25s";
|
|
|
|
|
2014-09-25 04:50:46 +08:00
|
|
|
aggr_printout(evsel, id, nr);
|
perf stat: Add csv-style output
This patch adds an option (-x/--field-separator) to print counts using a
CSV-style output. The user can pass a custom separator. This makes it very easy
to import counts directly into your favorite spreadsheet without having to
write scripts.
Example:
$ perf stat --field-separator=, -a -- sleep 1
4009.961740,task-clock-msecs
13,context-switches
2,CPU-migrations
189,page-faults
9596385684,cycles
3493659441,instructions
872897069,branches
41562,branch-misses
22424,cache-references
1289,cache-misses
Works also in non-aggregated mode:
$ perf stat -x , -a -A -- sleep 1
CPU0,1002.526168,task-clock-msecs
CPU1,1002.528365,task-clock-msecs
CPU2,1002.523360,task-clock-msecs
CPU3,1002.519878,task-clock-msecs
CPU0,1,context-switches
CPU1,5,context-switches
CPU2,5,context-switches
CPU3,6,context-switches
CPU0,0,CPU-migrations
CPU1,1,CPU-migrations
CPU2,0,CPU-migrations
CPU3,1,CPU-migrations
CPU0,2,page-faults
CPU1,6,page-faults
CPU2,9,page-faults
CPU3,174,page-faults
CPU0,2399439771,cycles
CPU1,2380369063,cycles
CPU2,2399142710,cycles
CPU3,2373161192,cycles
CPU0,872900618,instructions
CPU1,873030960,instructions
CPU2,872714525,instructions
CPU3,874460580,instructions
CPU0,221556839,branches
CPU1,218134342,branches
CPU2,218161730,branches
CPU3,218284093,branches
CPU0,18556,branch-misses
CPU1,1449,branch-misses
CPU2,3447,branch-misses
CPU3,12714,branch-misses
CPU0,8330,cache-references
CPU1,313844,cache-references
CPU2,47993728,cache-references
CPU3,826481,cache-references
CPU0,272,cache-misses
CPU1,5360,cache-misses
CPU2,1342193,cache-misses
CPU3,13992,cache-misses
This second version adds the ability to name a separator and uses
field-separator as the long option to be consistent with perf report.
Commiter note: Since we enabled --big-num by default in 201e0b0 and -x can't be
used with it, we need to notice if the user explicitely enabled or disabled -B,
add code to disable big_num if the user didn't explicitely set --big_num when
-x is used.
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederik Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: paulus@samba.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
LKML-Reference: <4cf68aa7.0fedd80a.5294.1203@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-02 00:49:05 +08:00
|
|
|
|
2013-09-29 04:28:00 +08:00
|
|
|
scnprintf(name, sizeof(name), "%s%s",
|
|
|
|
perf_evsel__name(evsel), csv_output ? "" : " (msec)");
|
2013-11-13 00:58:49 +08:00
|
|
|
|
|
|
|
fprintf(output, fmt_v, msecs, csv_sep);
|
|
|
|
|
|
|
|
if (csv_output)
|
|
|
|
fprintf(output, "%s%s", evsel->unit, csv_sep);
|
|
|
|
else
|
|
|
|
fprintf(output, "%-*s%s", unit_width, evsel->unit, csv_sep);
|
|
|
|
|
|
|
|
fprintf(output, fmt_n, name);
|
perf stat: Add csv-style output
This patch adds an option (-x/--field-separator) to print counts using a
CSV-style output. The user can pass a custom separator. This makes it very easy
to import counts directly into your favorite spreadsheet without having to
write scripts.
Example:
$ perf stat --field-separator=, -a -- sleep 1
4009.961740,task-clock-msecs
13,context-switches
2,CPU-migrations
189,page-faults
9596385684,cycles
3493659441,instructions
872897069,branches
41562,branch-misses
22424,cache-references
1289,cache-misses
Works also in non-aggregated mode:
$ perf stat -x , -a -A -- sleep 1
CPU0,1002.526168,task-clock-msecs
CPU1,1002.528365,task-clock-msecs
CPU2,1002.523360,task-clock-msecs
CPU3,1002.519878,task-clock-msecs
CPU0,1,context-switches
CPU1,5,context-switches
CPU2,5,context-switches
CPU3,6,context-switches
CPU0,0,CPU-migrations
CPU1,1,CPU-migrations
CPU2,0,CPU-migrations
CPU3,1,CPU-migrations
CPU0,2,page-faults
CPU1,6,page-faults
CPU2,9,page-faults
CPU3,174,page-faults
CPU0,2399439771,cycles
CPU1,2380369063,cycles
CPU2,2399142710,cycles
CPU3,2373161192,cycles
CPU0,872900618,instructions
CPU1,873030960,instructions
CPU2,872714525,instructions
CPU3,874460580,instructions
CPU0,221556839,branches
CPU1,218134342,branches
CPU2,218161730,branches
CPU3,218284093,branches
CPU0,18556,branch-misses
CPU1,1449,branch-misses
CPU2,3447,branch-misses
CPU3,12714,branch-misses
CPU0,8330,cache-references
CPU1,313844,cache-references
CPU2,47993728,cache-references
CPU3,826481,cache-references
CPU0,272,cache-misses
CPU1,5360,cache-misses
CPU2,1342193,cache-misses
CPU3,13992,cache-misses
This second version adds the ability to name a separator and uses
field-separator as the long option to be consistent with perf report.
Commiter note: Since we enabled --big-num by default in 201e0b0 and -x can't be
used with it, we need to notice if the user explicitely enabled or disabled -B,
add code to disable big_num if the user didn't explicitely set --big_num when
-x is used.
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederik Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: paulus@samba.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
LKML-Reference: <4cf68aa7.0fedd80a.5294.1203@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-02 00:49:05 +08:00
|
|
|
|
perf tool: Add cgroup support
This patch adds the ability to filter monitoring based on container groups
(cgroups) for both perf stat and perf record. It is possible to monitor
multiple cgroup in parallel. There is one cgroup per event. The cgroups to
monitor are passed via a new -G option followed by a comma separated list of
cgroup names.
The cgroup filesystem has to be mounted. Given a cgroup name, the perf tool
finds the corresponding directory in the cgroup filesystem and opens it. It
then passes that file descriptor to the kernel.
Example:
$ perf stat -B -a -e cycles:u,cycles:u,cycles:u -G test1,,test2 -- sleep 1
Performance counter stats for 'sleep 1':
2,368,667,414 cycles test1
2,369,661,459 cycles
<not counted> cycles test2
1.001856890 seconds time elapsed
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <4d590290.825bdf0a.7d0a.4890@mx.google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-02-14 17:20:01 +08:00
|
|
|
if (evsel->cgrp)
|
2011-08-16 04:22:33 +08:00
|
|
|
fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
|
2009-06-13 19:35:00 +08:00
|
|
|
}
|
|
|
|
|
perf stat: Support metrics in --per-core/socket mode
Enable metrics printing in --per-core / --per-socket mode. We need to
save the shadow metrics in a unique place. Always use the first CPU in
the aggregation. Then use the same CPU to retrieve the shadow value
later.
Example output:
% perf stat --per-core -a ./BC1s
Performance counter stats for 'system wide':
S0-C0 2 2966.020381 task-clock (msec) # 2.004 CPUs utilized (100.00%)
S0-C0 2 49 context-switches # 0.017 K/sec (100.00%)
S0-C0 2 4 cpu-migrations # 0.001 K/sec (100.00%)
S0-C0 2 467 page-faults # 0.157 K/sec
S0-C0 2 4,599,061,773 cycles # 1.551 GHz (100.00%)
S0-C0 2 9,755,886,883 instructions # 2.12 insn per cycle (100.00%)
S0-C0 2 1,906,272,125 branches # 642.704 M/sec (100.00%)
S0-C0 2 81,180,867 branch-misses # 4.26% of all branches
S0-C1 2 2965.995373 task-clock (msec) # 2.003 CPUs utilized (100.00%)
S0-C1 2 62 context-switches # 0.021 K/sec (100.00%)
S0-C1 2 8 cpu-migrations # 0.003 K/sec (100.00%)
S0-C1 2 281 page-faults # 0.095 K/sec
S0-C1 2 6,347,290 cycles # 0.002 GHz (100.00%)
S0-C1 2 4,654,156 instructions # 0.73 insn per cycle (100.00%)
S0-C1 2 947,121 branches # 0.319 M/sec (100.00%)
S0-C1 2 37,322 branch-misses # 3.94% of all branches
1.480409747 seconds time elapsed
v2: Rebase to older patches
v3: Document shadow cpus. Fix aggr_get_id argument. Fix -A shadows (Jiri)
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1456785386-19481-4-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-01 06:36:22 +08:00
|
|
|
static int first_shadow_cpu(struct perf_evsel *evsel, int id)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
if (!aggr_get_id)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
if (stat_config.aggr_mode == AGGR_NONE)
|
|
|
|
return id;
|
|
|
|
|
|
|
|
if (stat_config.aggr_mode == AGGR_GLOBAL)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
for (i = 0; i < perf_evsel__nr_cpus(evsel); i++) {
|
|
|
|
int cpu2 = perf_evsel__cpus(evsel)->map[i];
|
|
|
|
|
|
|
|
if (aggr_get_id(evsel_list->cpus, cpu2) == id)
|
|
|
|
return cpu2;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2015-06-03 22:25:56 +08:00
|
|
|
static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg)
|
|
|
|
{
|
2015-07-21 20:31:24 +08:00
|
|
|
FILE *output = stat_config.output;
|
2015-06-03 22:25:56 +08:00
|
|
|
double sc = evsel->scale;
|
|
|
|
const char *fmt;
|
|
|
|
|
|
|
|
if (csv_output) {
|
2016-05-06 07:04:03 +08:00
|
|
|
fmt = floor(sc) != sc ? "%.2f%s" : "%.0f%s";
|
2015-06-03 22:25:56 +08:00
|
|
|
} else {
|
|
|
|
if (big_num)
|
2016-05-06 07:04:03 +08:00
|
|
|
fmt = floor(sc) != sc ? "%'18.2f%s" : "%'18.0f%s";
|
2015-06-03 22:25:56 +08:00
|
|
|
else
|
2016-05-06 07:04:03 +08:00
|
|
|
fmt = floor(sc) != sc ? "%18.2f%s" : "%18.0f%s";
|
2015-06-03 22:25:56 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
aggr_printout(evsel, id, nr);
|
|
|
|
|
|
|
|
fprintf(output, fmt, avg, csv_sep);
|
|
|
|
|
|
|
|
if (evsel->unit)
|
|
|
|
fprintf(output, "%-*s%s",
|
|
|
|
csv_output ? 0 : unit_width,
|
|
|
|
evsel->unit, csv_sep);
|
|
|
|
|
|
|
|
fprintf(output, "%-*s", csv_output ? 0 : 25, perf_evsel__name(evsel));
|
|
|
|
|
|
|
|
if (evsel->cgrp)
|
|
|
|
fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
|
2015-11-03 09:50:21 +08:00
|
|
|
}
|
2015-06-03 22:25:56 +08:00
|
|
|
|
perf stat: Add support for metrics in interval mode
Now that we can modify the metrics printout functions easily, it's
straight forward to support metric printing for interval mode. All that
is needed is to print the time stamp on every new line. Pass the prefix
into the context and print it out.
v2: Move wrong hunk to here.
Committer note:
Before:
[root@jouet ~]# perf stat -I 1000 -e instructions,cycles sleep 1
# time counts unit events
1.000168216 538,913 instructions
1.000168216 748,765 cycles
1.000660048 153,741 instructions
1.000660048 214,066 cycles
After:
# perf stat -I 1000 -e instructions,cycles sleep 1
# time counts unit events
1.000215928 519,620 instructions # 0.69 insn per cycle
1.000215928 752,003 cycles
1.000946033 148,502 instructions # 0.33 insn per cycle
1.000946033 160,104 cycles
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1454173616-17710-3-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-01-31 01:06:50 +08:00
|
|
|
static void printout(int id, int nr, struct perf_evsel *counter, double uval,
|
2016-01-31 01:06:51 +08:00
|
|
|
char *prefix, u64 run, u64 ena, double noise)
|
2015-11-03 09:50:21 +08:00
|
|
|
{
|
2016-01-31 01:06:49 +08:00
|
|
|
struct perf_stat_output_ctx out;
|
perf stat: Add support for metrics in interval mode
Now that we can modify the metrics printout functions easily, it's
straight forward to support metric printing for interval mode. All that
is needed is to print the time stamp on every new line. Pass the prefix
into the context and print it out.
v2: Move wrong hunk to here.
Committer note:
Before:
[root@jouet ~]# perf stat -I 1000 -e instructions,cycles sleep 1
# time counts unit events
1.000168216 538,913 instructions
1.000168216 748,765 cycles
1.000660048 153,741 instructions
1.000660048 214,066 cycles
After:
# perf stat -I 1000 -e instructions,cycles sleep 1
# time counts unit events
1.000215928 519,620 instructions # 0.69 insn per cycle
1.000215928 752,003 cycles
1.000946033 148,502 instructions # 0.33 insn per cycle
1.000946033 160,104 cycles
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1454173616-17710-3-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-01-31 01:06:50 +08:00
|
|
|
struct outstate os = {
|
|
|
|
.fh = stat_config.output,
|
perf stat: Support metrics in --per-core/socket mode
Enable metrics printing in --per-core / --per-socket mode. We need to
save the shadow metrics in a unique place. Always use the first CPU in
the aggregation. Then use the same CPU to retrieve the shadow value
later.
Example output:
% perf stat --per-core -a ./BC1s
Performance counter stats for 'system wide':
S0-C0 2 2966.020381 task-clock (msec) # 2.004 CPUs utilized (100.00%)
S0-C0 2 49 context-switches # 0.017 K/sec (100.00%)
S0-C0 2 4 cpu-migrations # 0.001 K/sec (100.00%)
S0-C0 2 467 page-faults # 0.157 K/sec
S0-C0 2 4,599,061,773 cycles # 1.551 GHz (100.00%)
S0-C0 2 9,755,886,883 instructions # 2.12 insn per cycle (100.00%)
S0-C0 2 1,906,272,125 branches # 642.704 M/sec (100.00%)
S0-C0 2 81,180,867 branch-misses # 4.26% of all branches
S0-C1 2 2965.995373 task-clock (msec) # 2.003 CPUs utilized (100.00%)
S0-C1 2 62 context-switches # 0.021 K/sec (100.00%)
S0-C1 2 8 cpu-migrations # 0.003 K/sec (100.00%)
S0-C1 2 281 page-faults # 0.095 K/sec
S0-C1 2 6,347,290 cycles # 0.002 GHz (100.00%)
S0-C1 2 4,654,156 instructions # 0.73 insn per cycle (100.00%)
S0-C1 2 947,121 branches # 0.319 M/sec (100.00%)
S0-C1 2 37,322 branch-misses # 3.94% of all branches
1.480409747 seconds time elapsed
v2: Rebase to older patches
v3: Document shadow cpus. Fix aggr_get_id argument. Fix -A shadows (Jiri)
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1456785386-19481-4-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-01 06:36:22 +08:00
|
|
|
.prefix = prefix ? prefix : "",
|
|
|
|
.id = id,
|
|
|
|
.nr = nr,
|
|
|
|
.evsel = counter,
|
perf stat: Add support for metrics in interval mode
Now that we can modify the metrics printout functions easily, it's
straight forward to support metric printing for interval mode. All that
is needed is to print the time stamp on every new line. Pass the prefix
into the context and print it out.
v2: Move wrong hunk to here.
Committer note:
Before:
[root@jouet ~]# perf stat -I 1000 -e instructions,cycles sleep 1
# time counts unit events
1.000168216 538,913 instructions
1.000168216 748,765 cycles
1.000660048 153,741 instructions
1.000660048 214,066 cycles
After:
# perf stat -I 1000 -e instructions,cycles sleep 1
# time counts unit events
1.000215928 519,620 instructions # 0.69 insn per cycle
1.000215928 752,003 cycles
1.000946033 148,502 instructions # 0.33 insn per cycle
1.000946033 160,104 cycles
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1454173616-17710-3-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-01-31 01:06:50 +08:00
|
|
|
};
|
2016-01-31 01:06:49 +08:00
|
|
|
print_metric_t pm = print_metric_std;
|
|
|
|
void (*nl)(void *);
|
2015-11-03 09:50:21 +08:00
|
|
|
|
2016-03-04 07:57:36 +08:00
|
|
|
if (metric_only) {
|
|
|
|
nl = new_line_metric;
|
|
|
|
if (csv_output)
|
|
|
|
pm = print_metric_only_csv;
|
|
|
|
else
|
|
|
|
pm = print_metric_only;
|
|
|
|
} else
|
|
|
|
nl = new_line_std;
|
2015-11-03 09:50:21 +08:00
|
|
|
|
2016-03-04 07:57:36 +08:00
|
|
|
if (csv_output && !metric_only) {
|
perf stat: Implement CSV metrics output
Now support CSV output for metrics. With the new output callbacks this
is relatively straight forward by creating new callbacks.
This allows to easily plot metrics from CSV files.
The new line callback needs to know the number of fields to skip them
correctly
Example output before:
% perf stat -x, true
0.200687,,task-clock,200687,100.00
0,,context-switches,200687,100.00
0,,cpu-migrations,200687,100.00
40,,page-faults,200687,100.00
730871,,cycles,203601,100.00
551056,,stalled-cycles-frontend,203601,100.00
<not supported>,,stalled-cycles-backend,0,100.00
385523,,instructions,203601,100.00
78028,,branches,203601,100.00
3946,,branch-misses,203601,100.00
After:
% perf stat -x, true
.502457,,task-clock,502457,100.00,0.485,CPUs utilized
0,,context-switches,502457,100.00,0.000,K/sec
0,,cpu-migrations,502457,100.00,0.000,K/sec
45,,page-faults,502457,100.00,0.090,M/sec
644692,,cycles,509102,100.00,1.283,GHz
423470,,stalled-cycles-frontend,509102,100.00,65.69,frontend cycles idle
<not supported>,,stalled-cycles-backend,0,100.00,,,,
492701,,instructions,509102,100.00,0.76,insn per cycle
,,,,,0.86,stalled cycles per insn
97767,,branches,509102,100.00,194.578,M/sec
4788,,branch-misses,509102,100.00,4.90,of all branches
or easier readable
$ perf stat -x, -o x.csv true
$ column -s, -t x.csv
0.490635 task-clock 490635 100.00 0.489 CPUs utilized
0 context-switches 490635 100.00 0.000 K/sec
0 cpu-migrations 490635 100.00 0.000 K/sec
45 page-faults 490635 100.00 0.092 M/sec
629080 cycles 497698 100.00 1.282 GHz
409498 stalled-cycles-frontend 497698 100.00 65.09 frontend cycles idle
<not supported> stalled-cycles-backend 0 100.00
491424 instructions 497698 100.00 0.78 insn per cycle
0.83 stalled cycles per insn
97278 branches 497698 100.00 198.270 M/sec
4569 branch-misses 497698 100.00 4.70 of all branches
Two new fields are added: metric value and metric name.
v2: Split out function argument changes
v3: Reenable metrics for real.
v4: Fix wrong hunk from refactoring.
v5: Remove extra "noise" printing (Jiri), but add it to the not counted case.
Print empty metrics for not counted.
v6: Avoid outputting metric on empty format.
v7: Print metric at the end
v8: Remove extra run, ena fields
v9: Avoid extra new line for unsupported counters
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/r/1456785386-19481-3-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-01 06:36:21 +08:00
|
|
|
static int aggr_fields[] = {
|
|
|
|
[AGGR_GLOBAL] = 0,
|
|
|
|
[AGGR_THREAD] = 1,
|
|
|
|
[AGGR_NONE] = 1,
|
|
|
|
[AGGR_SOCKET] = 2,
|
|
|
|
[AGGR_CORE] = 2,
|
|
|
|
};
|
|
|
|
|
|
|
|
pm = print_metric_csv;
|
|
|
|
nl = new_line_csv;
|
|
|
|
os.nfields = 3;
|
|
|
|
os.nfields += aggr_fields[stat_config.aggr_mode];
|
|
|
|
if (counter->cgrp)
|
|
|
|
os.nfields++;
|
|
|
|
}
|
2016-02-18 06:44:00 +08:00
|
|
|
if (run == 0 || ena == 0 || counter->counts->scaled == -1) {
|
2016-03-04 07:57:36 +08:00
|
|
|
if (metric_only) {
|
|
|
|
pm(&os, NULL, "", "", 0);
|
|
|
|
return;
|
|
|
|
}
|
2016-01-31 01:06:51 +08:00
|
|
|
aggr_printout(counter, id, nr);
|
|
|
|
|
|
|
|
fprintf(stat_config.output, "%*s%s",
|
|
|
|
csv_output ? 0 : 18,
|
|
|
|
counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
|
|
|
|
csv_sep);
|
|
|
|
|
|
|
|
fprintf(stat_config.output, "%-*s%s",
|
|
|
|
csv_output ? 0 : unit_width,
|
|
|
|
counter->unit, csv_sep);
|
|
|
|
|
|
|
|
fprintf(stat_config.output, "%*s",
|
|
|
|
csv_output ? 0 : -25,
|
|
|
|
perf_evsel__name(counter));
|
|
|
|
|
|
|
|
if (counter->cgrp)
|
|
|
|
fprintf(stat_config.output, "%s%s",
|
|
|
|
csv_sep, counter->cgrp->name);
|
|
|
|
|
perf stat: Implement CSV metrics output
Now support CSV output for metrics. With the new output callbacks this
is relatively straight forward by creating new callbacks.
This allows to easily plot metrics from CSV files.
The new line callback needs to know the number of fields to skip them
correctly
Example output before:
% perf stat -x, true
0.200687,,task-clock,200687,100.00
0,,context-switches,200687,100.00
0,,cpu-migrations,200687,100.00
40,,page-faults,200687,100.00
730871,,cycles,203601,100.00
551056,,stalled-cycles-frontend,203601,100.00
<not supported>,,stalled-cycles-backend,0,100.00
385523,,instructions,203601,100.00
78028,,branches,203601,100.00
3946,,branch-misses,203601,100.00
After:
% perf stat -x, true
.502457,,task-clock,502457,100.00,0.485,CPUs utilized
0,,context-switches,502457,100.00,0.000,K/sec
0,,cpu-migrations,502457,100.00,0.000,K/sec
45,,page-faults,502457,100.00,0.090,M/sec
644692,,cycles,509102,100.00,1.283,GHz
423470,,stalled-cycles-frontend,509102,100.00,65.69,frontend cycles idle
<not supported>,,stalled-cycles-backend,0,100.00,,,,
492701,,instructions,509102,100.00,0.76,insn per cycle
,,,,,0.86,stalled cycles per insn
97767,,branches,509102,100.00,194.578,M/sec
4788,,branch-misses,509102,100.00,4.90,of all branches
or easier readable
$ perf stat -x, -o x.csv true
$ column -s, -t x.csv
0.490635 task-clock 490635 100.00 0.489 CPUs utilized
0 context-switches 490635 100.00 0.000 K/sec
0 cpu-migrations 490635 100.00 0.000 K/sec
45 page-faults 490635 100.00 0.092 M/sec
629080 cycles 497698 100.00 1.282 GHz
409498 stalled-cycles-frontend 497698 100.00 65.09 frontend cycles idle
<not supported> stalled-cycles-backend 0 100.00
491424 instructions 497698 100.00 0.78 insn per cycle
0.83 stalled cycles per insn
97278 branches 497698 100.00 198.270 M/sec
4569 branch-misses 497698 100.00 4.70 of all branches
Two new fields are added: metric value and metric name.
v2: Split out function argument changes
v3: Reenable metrics for real.
v4: Fix wrong hunk from refactoring.
v5: Remove extra "noise" printing (Jiri), but add it to the not counted case.
Print empty metrics for not counted.
v6: Avoid outputting metric on empty format.
v7: Print metric at the end
v8: Remove extra run, ena fields
v9: Avoid extra new line for unsupported counters
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/r/1456785386-19481-3-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-01 06:36:21 +08:00
|
|
|
if (!csv_output)
|
|
|
|
pm(&os, NULL, NULL, "", 0);
|
|
|
|
print_noise(counter, noise);
|
2016-01-31 01:06:51 +08:00
|
|
|
print_running(run, ena);
|
perf stat: Implement CSV metrics output
Now support CSV output for metrics. With the new output callbacks this
is relatively straight forward by creating new callbacks.
This allows to easily plot metrics from CSV files.
The new line callback needs to know the number of fields to skip them
correctly
Example output before:
% perf stat -x, true
0.200687,,task-clock,200687,100.00
0,,context-switches,200687,100.00
0,,cpu-migrations,200687,100.00
40,,page-faults,200687,100.00
730871,,cycles,203601,100.00
551056,,stalled-cycles-frontend,203601,100.00
<not supported>,,stalled-cycles-backend,0,100.00
385523,,instructions,203601,100.00
78028,,branches,203601,100.00
3946,,branch-misses,203601,100.00
After:
% perf stat -x, true
.502457,,task-clock,502457,100.00,0.485,CPUs utilized
0,,context-switches,502457,100.00,0.000,K/sec
0,,cpu-migrations,502457,100.00,0.000,K/sec
45,,page-faults,502457,100.00,0.090,M/sec
644692,,cycles,509102,100.00,1.283,GHz
423470,,stalled-cycles-frontend,509102,100.00,65.69,frontend cycles idle
<not supported>,,stalled-cycles-backend,0,100.00,,,,
492701,,instructions,509102,100.00,0.76,insn per cycle
,,,,,0.86,stalled cycles per insn
97767,,branches,509102,100.00,194.578,M/sec
4788,,branch-misses,509102,100.00,4.90,of all branches
or easier readable
$ perf stat -x, -o x.csv true
$ column -s, -t x.csv
0.490635 task-clock 490635 100.00 0.489 CPUs utilized
0 context-switches 490635 100.00 0.000 K/sec
0 cpu-migrations 490635 100.00 0.000 K/sec
45 page-faults 490635 100.00 0.092 M/sec
629080 cycles 497698 100.00 1.282 GHz
409498 stalled-cycles-frontend 497698 100.00 65.09 frontend cycles idle
<not supported> stalled-cycles-backend 0 100.00
491424 instructions 497698 100.00 0.78 insn per cycle
0.83 stalled cycles per insn
97278 branches 497698 100.00 198.270 M/sec
4569 branch-misses 497698 100.00 4.70 of all branches
Two new fields are added: metric value and metric name.
v2: Split out function argument changes
v3: Reenable metrics for real.
v4: Fix wrong hunk from refactoring.
v5: Remove extra "noise" printing (Jiri), but add it to the not counted case.
Print empty metrics for not counted.
v6: Avoid outputting metric on empty format.
v7: Print metric at the end
v8: Remove extra run, ena fields
v9: Avoid extra new line for unsupported counters
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/r/1456785386-19481-3-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-01 06:36:21 +08:00
|
|
|
if (csv_output)
|
|
|
|
pm(&os, NULL, NULL, "", 0);
|
2016-01-31 01:06:51 +08:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2016-03-04 07:57:36 +08:00
|
|
|
if (metric_only)
|
|
|
|
/* nothing */;
|
|
|
|
else if (nsec_counter(counter))
|
2015-11-03 09:50:21 +08:00
|
|
|
nsec_printout(id, nr, counter, uval);
|
|
|
|
else
|
|
|
|
abs_printout(id, nr, counter, uval);
|
2015-06-03 22:25:56 +08:00
|
|
|
|
2016-01-31 01:06:49 +08:00
|
|
|
out.print_metric = pm;
|
|
|
|
out.new_line = nl;
|
|
|
|
out.ctx = &os;
|
|
|
|
|
2016-03-04 07:57:36 +08:00
|
|
|
if (csv_output && !metric_only) {
|
perf stat: Implement CSV metrics output
Now support CSV output for metrics. With the new output callbacks this
is relatively straight forward by creating new callbacks.
This allows to easily plot metrics from CSV files.
The new line callback needs to know the number of fields to skip them
correctly
Example output before:
% perf stat -x, true
0.200687,,task-clock,200687,100.00
0,,context-switches,200687,100.00
0,,cpu-migrations,200687,100.00
40,,page-faults,200687,100.00
730871,,cycles,203601,100.00
551056,,stalled-cycles-frontend,203601,100.00
<not supported>,,stalled-cycles-backend,0,100.00
385523,,instructions,203601,100.00
78028,,branches,203601,100.00
3946,,branch-misses,203601,100.00
After:
% perf stat -x, true
.502457,,task-clock,502457,100.00,0.485,CPUs utilized
0,,context-switches,502457,100.00,0.000,K/sec
0,,cpu-migrations,502457,100.00,0.000,K/sec
45,,page-faults,502457,100.00,0.090,M/sec
644692,,cycles,509102,100.00,1.283,GHz
423470,,stalled-cycles-frontend,509102,100.00,65.69,frontend cycles idle
<not supported>,,stalled-cycles-backend,0,100.00,,,,
492701,,instructions,509102,100.00,0.76,insn per cycle
,,,,,0.86,stalled cycles per insn
97767,,branches,509102,100.00,194.578,M/sec
4788,,branch-misses,509102,100.00,4.90,of all branches
or easier readable
$ perf stat -x, -o x.csv true
$ column -s, -t x.csv
0.490635 task-clock 490635 100.00 0.489 CPUs utilized
0 context-switches 490635 100.00 0.000 K/sec
0 cpu-migrations 490635 100.00 0.000 K/sec
45 page-faults 490635 100.00 0.092 M/sec
629080 cycles 497698 100.00 1.282 GHz
409498 stalled-cycles-frontend 497698 100.00 65.09 frontend cycles idle
<not supported> stalled-cycles-backend 0 100.00
491424 instructions 497698 100.00 0.78 insn per cycle
0.83 stalled cycles per insn
97278 branches 497698 100.00 198.270 M/sec
4569 branch-misses 497698 100.00 4.70 of all branches
Two new fields are added: metric value and metric name.
v2: Split out function argument changes
v3: Reenable metrics for real.
v4: Fix wrong hunk from refactoring.
v5: Remove extra "noise" printing (Jiri), but add it to the not counted case.
Print empty metrics for not counted.
v6: Avoid outputting metric on empty format.
v7: Print metric at the end
v8: Remove extra run, ena fields
v9: Avoid extra new line for unsupported counters
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/r/1456785386-19481-3-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-01 06:36:21 +08:00
|
|
|
print_noise(counter, noise);
|
|
|
|
print_running(run, ena);
|
|
|
|
}
|
|
|
|
|
|
|
|
perf_stat__print_shadow_stats(counter, uval,
|
perf stat: Support metrics in --per-core/socket mode
Enable metrics printing in --per-core / --per-socket mode. We need to
save the shadow metrics in a unique place. Always use the first CPU in
the aggregation. Then use the same CPU to retrieve the shadow value
later.
Example output:
% perf stat --per-core -a ./BC1s
Performance counter stats for 'system wide':
S0-C0 2 2966.020381 task-clock (msec) # 2.004 CPUs utilized (100.00%)
S0-C0 2 49 context-switches # 0.017 K/sec (100.00%)
S0-C0 2 4 cpu-migrations # 0.001 K/sec (100.00%)
S0-C0 2 467 page-faults # 0.157 K/sec
S0-C0 2 4,599,061,773 cycles # 1.551 GHz (100.00%)
S0-C0 2 9,755,886,883 instructions # 2.12 insn per cycle (100.00%)
S0-C0 2 1,906,272,125 branches # 642.704 M/sec (100.00%)
S0-C0 2 81,180,867 branch-misses # 4.26% of all branches
S0-C1 2 2965.995373 task-clock (msec) # 2.003 CPUs utilized (100.00%)
S0-C1 2 62 context-switches # 0.021 K/sec (100.00%)
S0-C1 2 8 cpu-migrations # 0.003 K/sec (100.00%)
S0-C1 2 281 page-faults # 0.095 K/sec
S0-C1 2 6,347,290 cycles # 0.002 GHz (100.00%)
S0-C1 2 4,654,156 instructions # 0.73 insn per cycle (100.00%)
S0-C1 2 947,121 branches # 0.319 M/sec (100.00%)
S0-C1 2 37,322 branch-misses # 3.94% of all branches
1.480409747 seconds time elapsed
v2: Rebase to older patches
v3: Document shadow cpus. Fix aggr_get_id argument. Fix -A shadows (Jiri)
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1456785386-19481-4-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-01 06:36:22 +08:00
|
|
|
first_shadow_cpu(counter, id),
|
2016-01-31 01:06:49 +08:00
|
|
|
&out);
|
2016-03-04 07:57:36 +08:00
|
|
|
if (!csv_output && !metric_only) {
|
perf stat: Implement CSV metrics output
Now support CSV output for metrics. With the new output callbacks this
is relatively straight forward by creating new callbacks.
This allows to easily plot metrics from CSV files.
The new line callback needs to know the number of fields to skip them
correctly
Example output before:
% perf stat -x, true
0.200687,,task-clock,200687,100.00
0,,context-switches,200687,100.00
0,,cpu-migrations,200687,100.00
40,,page-faults,200687,100.00
730871,,cycles,203601,100.00
551056,,stalled-cycles-frontend,203601,100.00
<not supported>,,stalled-cycles-backend,0,100.00
385523,,instructions,203601,100.00
78028,,branches,203601,100.00
3946,,branch-misses,203601,100.00
After:
% perf stat -x, true
.502457,,task-clock,502457,100.00,0.485,CPUs utilized
0,,context-switches,502457,100.00,0.000,K/sec
0,,cpu-migrations,502457,100.00,0.000,K/sec
45,,page-faults,502457,100.00,0.090,M/sec
644692,,cycles,509102,100.00,1.283,GHz
423470,,stalled-cycles-frontend,509102,100.00,65.69,frontend cycles idle
<not supported>,,stalled-cycles-backend,0,100.00,,,,
492701,,instructions,509102,100.00,0.76,insn per cycle
,,,,,0.86,stalled cycles per insn
97767,,branches,509102,100.00,194.578,M/sec
4788,,branch-misses,509102,100.00,4.90,of all branches
or easier readable
$ perf stat -x, -o x.csv true
$ column -s, -t x.csv
0.490635 task-clock 490635 100.00 0.489 CPUs utilized
0 context-switches 490635 100.00 0.000 K/sec
0 cpu-migrations 490635 100.00 0.000 K/sec
45 page-faults 490635 100.00 0.092 M/sec
629080 cycles 497698 100.00 1.282 GHz
409498 stalled-cycles-frontend 497698 100.00 65.09 frontend cycles idle
<not supported> stalled-cycles-backend 0 100.00
491424 instructions 497698 100.00 0.78 insn per cycle
0.83 stalled cycles per insn
97278 branches 497698 100.00 198.270 M/sec
4569 branch-misses 497698 100.00 4.70 of all branches
Two new fields are added: metric value and metric name.
v2: Split out function argument changes
v3: Reenable metrics for real.
v4: Fix wrong hunk from refactoring.
v5: Remove extra "noise" printing (Jiri), but add it to the not counted case.
Print empty metrics for not counted.
v6: Avoid outputting metric on empty format.
v7: Print metric at the end
v8: Remove extra run, ena fields
v9: Avoid extra new line for unsupported counters
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/r/1456785386-19481-3-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-01 06:36:21 +08:00
|
|
|
print_noise(counter, noise);
|
|
|
|
print_running(run, ena);
|
|
|
|
}
|
2015-06-03 22:25:56 +08:00
|
|
|
}
|
|
|
|
|
perf stat: Support metrics in --per-core/socket mode
Enable metrics printing in --per-core / --per-socket mode. We need to
save the shadow metrics in a unique place. Always use the first CPU in
the aggregation. Then use the same CPU to retrieve the shadow value
later.
Example output:
% perf stat --per-core -a ./BC1s
Performance counter stats for 'system wide':
S0-C0 2 2966.020381 task-clock (msec) # 2.004 CPUs utilized (100.00%)
S0-C0 2 49 context-switches # 0.017 K/sec (100.00%)
S0-C0 2 4 cpu-migrations # 0.001 K/sec (100.00%)
S0-C0 2 467 page-faults # 0.157 K/sec
S0-C0 2 4,599,061,773 cycles # 1.551 GHz (100.00%)
S0-C0 2 9,755,886,883 instructions # 2.12 insn per cycle (100.00%)
S0-C0 2 1,906,272,125 branches # 642.704 M/sec (100.00%)
S0-C0 2 81,180,867 branch-misses # 4.26% of all branches
S0-C1 2 2965.995373 task-clock (msec) # 2.003 CPUs utilized (100.00%)
S0-C1 2 62 context-switches # 0.021 K/sec (100.00%)
S0-C1 2 8 cpu-migrations # 0.003 K/sec (100.00%)
S0-C1 2 281 page-faults # 0.095 K/sec
S0-C1 2 6,347,290 cycles # 0.002 GHz (100.00%)
S0-C1 2 4,654,156 instructions # 0.73 insn per cycle (100.00%)
S0-C1 2 947,121 branches # 0.319 M/sec (100.00%)
S0-C1 2 37,322 branch-misses # 3.94% of all branches
1.480409747 seconds time elapsed
v2: Rebase to older patches
v3: Document shadow cpus. Fix aggr_get_id argument. Fix -A shadows (Jiri)
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1456785386-19481-4-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-01 06:36:22 +08:00
|
|
|
static void aggr_update_shadow(void)
|
|
|
|
{
|
|
|
|
int cpu, s2, id, s;
|
|
|
|
u64 val;
|
|
|
|
struct perf_evsel *counter;
|
|
|
|
|
|
|
|
for (s = 0; s < aggr_map->nr; s++) {
|
|
|
|
id = aggr_map->map[s];
|
2016-06-23 22:26:15 +08:00
|
|
|
evlist__for_each_entry(evsel_list, counter) {
|
perf stat: Support metrics in --per-core/socket mode
Enable metrics printing in --per-core / --per-socket mode. We need to
save the shadow metrics in a unique place. Always use the first CPU in
the aggregation. Then use the same CPU to retrieve the shadow value
later.
Example output:
% perf stat --per-core -a ./BC1s
Performance counter stats for 'system wide':
S0-C0 2 2966.020381 task-clock (msec) # 2.004 CPUs utilized (100.00%)
S0-C0 2 49 context-switches # 0.017 K/sec (100.00%)
S0-C0 2 4 cpu-migrations # 0.001 K/sec (100.00%)
S0-C0 2 467 page-faults # 0.157 K/sec
S0-C0 2 4,599,061,773 cycles # 1.551 GHz (100.00%)
S0-C0 2 9,755,886,883 instructions # 2.12 insn per cycle (100.00%)
S0-C0 2 1,906,272,125 branches # 642.704 M/sec (100.00%)
S0-C0 2 81,180,867 branch-misses # 4.26% of all branches
S0-C1 2 2965.995373 task-clock (msec) # 2.003 CPUs utilized (100.00%)
S0-C1 2 62 context-switches # 0.021 K/sec (100.00%)
S0-C1 2 8 cpu-migrations # 0.003 K/sec (100.00%)
S0-C1 2 281 page-faults # 0.095 K/sec
S0-C1 2 6,347,290 cycles # 0.002 GHz (100.00%)
S0-C1 2 4,654,156 instructions # 0.73 insn per cycle (100.00%)
S0-C1 2 947,121 branches # 0.319 M/sec (100.00%)
S0-C1 2 37,322 branch-misses # 3.94% of all branches
1.480409747 seconds time elapsed
v2: Rebase to older patches
v3: Document shadow cpus. Fix aggr_get_id argument. Fix -A shadows (Jiri)
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1456785386-19481-4-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-01 06:36:22 +08:00
|
|
|
val = 0;
|
|
|
|
for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
|
|
|
|
s2 = aggr_get_id(evsel_list->cpus, cpu);
|
|
|
|
if (s2 != id)
|
|
|
|
continue;
|
|
|
|
val += perf_counts(counter->counts, cpu, 0)->val;
|
|
|
|
}
|
|
|
|
val = val * counter->scale;
|
|
|
|
perf_stat__update_shadow_stats(counter, &val,
|
|
|
|
first_shadow_cpu(counter, id));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-02-14 20:57:27 +08:00
|
|
|
static void print_aggr(char *prefix)
|
2013-02-06 22:46:02 +08:00
|
|
|
{
|
2015-07-21 20:31:24 +08:00
|
|
|
FILE *output = stat_config.output;
|
2013-02-06 22:46:02 +08:00
|
|
|
struct perf_evsel *counter;
|
perf stat: Get correct cpu id for print_aggr
print_aggr() fails to print per-core/per-socket statistics after commit
582ec0829b3d ("perf stat: Fix per-socket output bug for uncore events")
if events have differnt cpus. Because in print_aggr(), aggr_get_id needs
index (not cpu id) to find core/pkg id. Also, evsel cpu maps should be
used to get aggregated id.
Here is an example:
Counting events cycles,uncore_imc_0/cas_count_read/. (Uncore event has
cpumask 0,18)
$ perf stat -e cycles,uncore_imc_0/cas_count_read/ -C0,18 --per-core sleep 2
Without this patch, it failes to get CPU 18 result.
Performance counter stats for 'CPU(s) 0,18':
S0-C0 1 7526851 cycles
S0-C0 1 1.05 MiB uncore_imc_0/cas_count_read/
S1-C0 0 <not counted> cycles
S1-C0 0 <not counted> MiB uncore_imc_0/cas_count_read/
With this patch, it can get both CPU0 and CPU18 result.
Performance counter stats for 'CPU(s) 0,18':
S0-C0 1 6327768 cycles
S0-C0 1 0.47 MiB uncore_imc_0/cas_count_read/
S1-C0 1 330228 cycles
S1-C0 1 0.29 MiB uncore_imc_0/cas_count_read/
Signed-off-by: Kan Liang <kan.liang@intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Stephane Eranian <eranian@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Fixes: 582ec0829b3d ("perf stat: Fix per-socket output bug for uncore events")
Link: http://lkml.kernel.org/r/1435820925-51091-1-git-send-email-kan.liang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-02 15:08:43 +08:00
|
|
|
int cpu, s, s2, id, nr;
|
2013-11-13 00:58:49 +08:00
|
|
|
double uval;
|
2013-02-06 22:46:02 +08:00
|
|
|
u64 ena, run, val;
|
2016-03-04 07:57:36 +08:00
|
|
|
bool first;
|
2013-02-06 22:46:02 +08:00
|
|
|
|
2013-02-14 20:57:27 +08:00
|
|
|
if (!(aggr_map || aggr_get_id))
|
2013-02-06 22:46:02 +08:00
|
|
|
return;
|
|
|
|
|
perf stat: Support metrics in --per-core/socket mode
Enable metrics printing in --per-core / --per-socket mode. We need to
save the shadow metrics in a unique place. Always use the first CPU in
the aggregation. Then use the same CPU to retrieve the shadow value
later.
Example output:
% perf stat --per-core -a ./BC1s
Performance counter stats for 'system wide':
S0-C0 2 2966.020381 task-clock (msec) # 2.004 CPUs utilized (100.00%)
S0-C0 2 49 context-switches # 0.017 K/sec (100.00%)
S0-C0 2 4 cpu-migrations # 0.001 K/sec (100.00%)
S0-C0 2 467 page-faults # 0.157 K/sec
S0-C0 2 4,599,061,773 cycles # 1.551 GHz (100.00%)
S0-C0 2 9,755,886,883 instructions # 2.12 insn per cycle (100.00%)
S0-C0 2 1,906,272,125 branches # 642.704 M/sec (100.00%)
S0-C0 2 81,180,867 branch-misses # 4.26% of all branches
S0-C1 2 2965.995373 task-clock (msec) # 2.003 CPUs utilized (100.00%)
S0-C1 2 62 context-switches # 0.021 K/sec (100.00%)
S0-C1 2 8 cpu-migrations # 0.003 K/sec (100.00%)
S0-C1 2 281 page-faults # 0.095 K/sec
S0-C1 2 6,347,290 cycles # 0.002 GHz (100.00%)
S0-C1 2 4,654,156 instructions # 0.73 insn per cycle (100.00%)
S0-C1 2 947,121 branches # 0.319 M/sec (100.00%)
S0-C1 2 37,322 branch-misses # 3.94% of all branches
1.480409747 seconds time elapsed
v2: Rebase to older patches
v3: Document shadow cpus. Fix aggr_get_id argument. Fix -A shadows (Jiri)
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1456785386-19481-4-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-01 06:36:22 +08:00
|
|
|
aggr_update_shadow();
|
|
|
|
|
2016-03-04 07:57:36 +08:00
|
|
|
/*
|
|
|
|
* With metric_only everything is on a single line.
|
|
|
|
* Without each counter has its own line.
|
|
|
|
*/
|
2013-02-14 20:57:27 +08:00
|
|
|
for (s = 0; s < aggr_map->nr; s++) {
|
2016-03-04 07:57:36 +08:00
|
|
|
if (prefix && metric_only)
|
|
|
|
fprintf(output, "%s", prefix);
|
|
|
|
|
2013-02-14 20:57:27 +08:00
|
|
|
id = aggr_map->map[s];
|
2016-03-04 07:57:36 +08:00
|
|
|
first = true;
|
2016-06-23 22:26:15 +08:00
|
|
|
evlist__for_each_entry(evsel_list, counter) {
|
2013-02-06 22:46:02 +08:00
|
|
|
val = ena = run = 0;
|
|
|
|
nr = 0;
|
|
|
|
for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
|
perf stat: Get correct cpu id for print_aggr
print_aggr() fails to print per-core/per-socket statistics after commit
582ec0829b3d ("perf stat: Fix per-socket output bug for uncore events")
if events have differnt cpus. Because in print_aggr(), aggr_get_id needs
index (not cpu id) to find core/pkg id. Also, evsel cpu maps should be
used to get aggregated id.
Here is an example:
Counting events cycles,uncore_imc_0/cas_count_read/. (Uncore event has
cpumask 0,18)
$ perf stat -e cycles,uncore_imc_0/cas_count_read/ -C0,18 --per-core sleep 2
Without this patch, it failes to get CPU 18 result.
Performance counter stats for 'CPU(s) 0,18':
S0-C0 1 7526851 cycles
S0-C0 1 1.05 MiB uncore_imc_0/cas_count_read/
S1-C0 0 <not counted> cycles
S1-C0 0 <not counted> MiB uncore_imc_0/cas_count_read/
With this patch, it can get both CPU0 and CPU18 result.
Performance counter stats for 'CPU(s) 0,18':
S0-C0 1 6327768 cycles
S0-C0 1 0.47 MiB uncore_imc_0/cas_count_read/
S1-C0 1 330228 cycles
S1-C0 1 0.29 MiB uncore_imc_0/cas_count_read/
Signed-off-by: Kan Liang <kan.liang@intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Stephane Eranian <eranian@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Fixes: 582ec0829b3d ("perf stat: Fix per-socket output bug for uncore events")
Link: http://lkml.kernel.org/r/1435820925-51091-1-git-send-email-kan.liang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-02 15:08:43 +08:00
|
|
|
s2 = aggr_get_id(perf_evsel__cpus(counter), cpu);
|
2013-02-14 20:57:27 +08:00
|
|
|
if (s2 != id)
|
2013-02-06 22:46:02 +08:00
|
|
|
continue;
|
2015-06-26 17:29:11 +08:00
|
|
|
val += perf_counts(counter->counts, cpu, 0)->val;
|
|
|
|
ena += perf_counts(counter->counts, cpu, 0)->ena;
|
|
|
|
run += perf_counts(counter->counts, cpu, 0)->run;
|
2013-02-06 22:46:02 +08:00
|
|
|
nr++;
|
|
|
|
}
|
2016-03-04 07:57:36 +08:00
|
|
|
if (first && metric_only) {
|
|
|
|
first = false;
|
|
|
|
aggr_printout(counter, id, nr);
|
|
|
|
}
|
|
|
|
if (prefix && !metric_only)
|
2013-02-06 22:46:02 +08:00
|
|
|
fprintf(output, "%s", prefix);
|
|
|
|
|
2013-11-13 00:58:49 +08:00
|
|
|
uval = val * counter->scale;
|
2016-01-31 01:06:51 +08:00
|
|
|
printout(id, nr, counter, uval, prefix, run, ena, 1.0);
|
2016-03-04 07:57:36 +08:00
|
|
|
if (!metric_only)
|
|
|
|
fputc('\n', output);
|
2013-02-06 22:46:02 +08:00
|
|
|
}
|
2016-03-04 07:57:36 +08:00
|
|
|
if (metric_only)
|
|
|
|
fputc('\n', output);
|
2013-02-06 22:46:02 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
perf stat: Introduce --per-thread option
Currently all the -p option PID arguments tasks values get aggregated
and printed as single values.
Adding --per-tasks option to print values per task.
$ perf stat -e cycles,instructions --per-thread -p 30190,30242
^C
Performance counter stats for process id '30190,30242':
cat-30190 0 cycles
yes-30242 3,842,525,421 cycles
cat-30190 0 instructions
yes-30242 10,370,817,010 instructions
1.143155657 seconds time elapsed
Also works under interval mode:
$ perf stat -e cycles,instructions --per-thread -p 30190,30242 -I 1000
# time comm-pid counts unit events
1.000073435 cat-30190 89,058 cycles
1.000073435 yes-30242 3,360,786,902 cycles (100.00%)
1.000073435 cat-30190 14,066 instructions
1.000073435 yes-30242 9,069,937,462 instructions
2.000204830 cat-30190 0 cycles
2.000204830 yes-30242 3,351,667,626 cycles
2.000204830 cat-30190 0 instructions
2.000204830 yes-30242 9,045,796,885 instructions
^C 2.771286639 cat-30190 0 cycles
2.771286639 yes-30242 2,593,884,166 cycles
2.771286639 cat-30190 0 instructions
2.771286639 yes-30242 7,001,171,191 instructions
It works only with -t and -p options, otherwise following error is
printed:
$ perf stat -e cycles --per-thread -I 1000 ls
The --per-thread option is only available when monitoring via -p -t options.
-p, --pid <pid> stat events on existing process id
-t, --tid <tid> stat events on existing thread id
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-23-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-06-26 17:29:27 +08:00
|
|
|
static void print_aggr_thread(struct perf_evsel *counter, char *prefix)
|
|
|
|
{
|
2015-07-21 20:31:24 +08:00
|
|
|
FILE *output = stat_config.output;
|
perf stat: Introduce --per-thread option
Currently all the -p option PID arguments tasks values get aggregated
and printed as single values.
Adding --per-tasks option to print values per task.
$ perf stat -e cycles,instructions --per-thread -p 30190,30242
^C
Performance counter stats for process id '30190,30242':
cat-30190 0 cycles
yes-30242 3,842,525,421 cycles
cat-30190 0 instructions
yes-30242 10,370,817,010 instructions
1.143155657 seconds time elapsed
Also works under interval mode:
$ perf stat -e cycles,instructions --per-thread -p 30190,30242 -I 1000
# time comm-pid counts unit events
1.000073435 cat-30190 89,058 cycles
1.000073435 yes-30242 3,360,786,902 cycles (100.00%)
1.000073435 cat-30190 14,066 instructions
1.000073435 yes-30242 9,069,937,462 instructions
2.000204830 cat-30190 0 cycles
2.000204830 yes-30242 3,351,667,626 cycles
2.000204830 cat-30190 0 instructions
2.000204830 yes-30242 9,045,796,885 instructions
^C 2.771286639 cat-30190 0 cycles
2.771286639 yes-30242 2,593,884,166 cycles
2.771286639 cat-30190 0 instructions
2.771286639 yes-30242 7,001,171,191 instructions
It works only with -t and -p options, otherwise following error is
printed:
$ perf stat -e cycles --per-thread -I 1000 ls
The --per-thread option is only available when monitoring via -p -t options.
-p, --pid <pid> stat events on existing process id
-t, --tid <tid> stat events on existing thread id
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-23-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-06-26 17:29:27 +08:00
|
|
|
int nthreads = thread_map__nr(counter->threads);
|
|
|
|
int ncpus = cpu_map__nr(counter->cpus);
|
|
|
|
int cpu, thread;
|
|
|
|
double uval;
|
|
|
|
|
|
|
|
for (thread = 0; thread < nthreads; thread++) {
|
|
|
|
u64 ena = 0, run = 0, val = 0;
|
|
|
|
|
|
|
|
for (cpu = 0; cpu < ncpus; cpu++) {
|
|
|
|
val += perf_counts(counter->counts, cpu, thread)->val;
|
|
|
|
ena += perf_counts(counter->counts, cpu, thread)->ena;
|
|
|
|
run += perf_counts(counter->counts, cpu, thread)->run;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (prefix)
|
|
|
|
fprintf(output, "%s", prefix);
|
|
|
|
|
|
|
|
uval = val * counter->scale;
|
2016-01-31 01:06:51 +08:00
|
|
|
printout(thread, 0, counter, uval, prefix, run, ena, 1.0);
|
perf stat: Introduce --per-thread option
Currently all the -p option PID arguments tasks values get aggregated
and printed as single values.
Adding --per-tasks option to print values per task.
$ perf stat -e cycles,instructions --per-thread -p 30190,30242
^C
Performance counter stats for process id '30190,30242':
cat-30190 0 cycles
yes-30242 3,842,525,421 cycles
cat-30190 0 instructions
yes-30242 10,370,817,010 instructions
1.143155657 seconds time elapsed
Also works under interval mode:
$ perf stat -e cycles,instructions --per-thread -p 30190,30242 -I 1000
# time comm-pid counts unit events
1.000073435 cat-30190 89,058 cycles
1.000073435 yes-30242 3,360,786,902 cycles (100.00%)
1.000073435 cat-30190 14,066 instructions
1.000073435 yes-30242 9,069,937,462 instructions
2.000204830 cat-30190 0 cycles
2.000204830 yes-30242 3,351,667,626 cycles
2.000204830 cat-30190 0 instructions
2.000204830 yes-30242 9,045,796,885 instructions
^C 2.771286639 cat-30190 0 cycles
2.771286639 yes-30242 2,593,884,166 cycles
2.771286639 cat-30190 0 instructions
2.771286639 yes-30242 7,001,171,191 instructions
It works only with -t and -p options, otherwise following error is
printed:
$ perf stat -e cycles --per-thread -I 1000 ls
The --per-thread option is only available when monitoring via -p -t options.
-p, --pid <pid> stat events on existing process id
-t, --tid <tid> stat events on existing thread id
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-23-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-06-26 17:29:27 +08:00
|
|
|
fputc('\n', output);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-05-29 15:10:54 +08:00
|
|
|
/*
|
|
|
|
* Print out the results of a single counter:
|
2010-11-16 17:05:01 +08:00
|
|
|
* aggregated counts in system-wide mode
|
2009-05-29 15:10:54 +08:00
|
|
|
*/
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
|
2009-05-29 15:10:54 +08:00
|
|
|
{
|
2015-07-21 20:31:24 +08:00
|
|
|
FILE *output = stat_config.output;
|
2015-10-16 18:41:03 +08:00
|
|
|
struct perf_stat_evsel *ps = counter->priv;
|
2011-01-04 02:39:04 +08:00
|
|
|
double avg = avg_stats(&ps->res_stats[0]);
|
2013-11-13 00:58:49 +08:00
|
|
|
double uval;
|
2015-03-11 22:16:27 +08:00
|
|
|
double avg_enabled, avg_running;
|
|
|
|
|
|
|
|
avg_enabled = avg_stats(&ps->res_stats[1]);
|
|
|
|
avg_running = avg_stats(&ps->res_stats[2]);
|
2009-05-29 15:10:54 +08:00
|
|
|
|
2016-03-04 07:57:36 +08:00
|
|
|
if (prefix && !metric_only)
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
fprintf(output, "%s", prefix);
|
|
|
|
|
2013-11-13 00:58:49 +08:00
|
|
|
uval = avg * counter->scale;
|
2016-01-31 01:06:51 +08:00
|
|
|
printout(-1, 0, counter, uval, prefix, avg_running, avg_enabled, avg);
|
2016-03-04 07:57:36 +08:00
|
|
|
if (!metric_only)
|
|
|
|
fprintf(output, "\n");
|
2009-05-29 15:10:54 +08:00
|
|
|
}
|
|
|
|
|
2010-11-16 17:05:01 +08:00
|
|
|
/*
|
|
|
|
* Print out the results of a single counter:
|
|
|
|
* does not use aggregated count in system-wide
|
|
|
|
*/
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
static void print_counter(struct perf_evsel *counter, char *prefix)
|
2010-11-16 17:05:01 +08:00
|
|
|
{
|
2015-07-21 20:31:24 +08:00
|
|
|
FILE *output = stat_config.output;
|
2010-11-16 17:05:01 +08:00
|
|
|
u64 ena, run, val;
|
2013-11-13 00:58:49 +08:00
|
|
|
double uval;
|
2010-11-16 17:05:01 +08:00
|
|
|
int cpu;
|
|
|
|
|
2012-09-10 15:53:50 +08:00
|
|
|
for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
|
2015-06-26 17:29:11 +08:00
|
|
|
val = perf_counts(counter->counts, cpu, 0)->val;
|
|
|
|
ena = perf_counts(counter->counts, cpu, 0)->ena;
|
|
|
|
run = perf_counts(counter->counts, cpu, 0)->run;
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
|
|
|
|
if (prefix)
|
|
|
|
fprintf(output, "%s", prefix);
|
|
|
|
|
2013-11-13 00:58:49 +08:00
|
|
|
uval = val * counter->scale;
|
2016-01-31 01:06:51 +08:00
|
|
|
printout(cpu, 0, counter, uval, prefix, run, ena, 1.0);
|
2010-11-16 17:05:01 +08:00
|
|
|
|
2011-08-16 04:22:33 +08:00
|
|
|
fputc('\n', output);
|
2010-11-16 17:05:01 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2016-03-04 07:57:37 +08:00
|
|
|
static void print_no_aggr_metric(char *prefix)
|
|
|
|
{
|
|
|
|
int cpu;
|
|
|
|
int nrcpus = 0;
|
|
|
|
struct perf_evsel *counter;
|
|
|
|
u64 ena, run, val;
|
|
|
|
double uval;
|
|
|
|
|
|
|
|
nrcpus = evsel_list->cpus->nr;
|
|
|
|
for (cpu = 0; cpu < nrcpus; cpu++) {
|
|
|
|
bool first = true;
|
|
|
|
|
|
|
|
if (prefix)
|
|
|
|
fputs(prefix, stat_config.output);
|
2016-06-23 22:26:15 +08:00
|
|
|
evlist__for_each_entry(evsel_list, counter) {
|
2016-03-04 07:57:37 +08:00
|
|
|
if (first) {
|
|
|
|
aggr_printout(counter, cpu, 0);
|
|
|
|
first = false;
|
|
|
|
}
|
|
|
|
val = perf_counts(counter->counts, cpu, 0)->val;
|
|
|
|
ena = perf_counts(counter->counts, cpu, 0)->ena;
|
|
|
|
run = perf_counts(counter->counts, cpu, 0)->run;
|
|
|
|
|
|
|
|
uval = val * counter->scale;
|
|
|
|
printout(cpu, 0, counter, uval, prefix, run, ena, 1.0);
|
|
|
|
}
|
|
|
|
fputc('\n', stat_config.output);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2016-03-04 07:57:36 +08:00
|
|
|
static int aggr_header_lens[] = {
|
|
|
|
[AGGR_CORE] = 18,
|
|
|
|
[AGGR_SOCKET] = 12,
|
2016-03-04 07:57:37 +08:00
|
|
|
[AGGR_NONE] = 6,
|
2016-03-04 07:57:36 +08:00
|
|
|
[AGGR_THREAD] = 24,
|
|
|
|
[AGGR_GLOBAL] = 0,
|
|
|
|
};
|
|
|
|
|
2016-05-25 03:52:39 +08:00
|
|
|
static const char *aggr_header_csv[] = {
|
|
|
|
[AGGR_CORE] = "core,cpus,",
|
|
|
|
[AGGR_SOCKET] = "socket,cpus",
|
|
|
|
[AGGR_NONE] = "cpu,",
|
|
|
|
[AGGR_THREAD] = "comm-pid,",
|
|
|
|
[AGGR_GLOBAL] = ""
|
|
|
|
};
|
|
|
|
|
2016-05-25 03:52:38 +08:00
|
|
|
static void print_metric_headers(const char *prefix, bool no_indent)
|
2016-03-04 07:57:36 +08:00
|
|
|
{
|
|
|
|
struct perf_stat_output_ctx out;
|
|
|
|
struct perf_evsel *counter;
|
|
|
|
struct outstate os = {
|
|
|
|
.fh = stat_config.output
|
|
|
|
};
|
|
|
|
|
|
|
|
if (prefix)
|
|
|
|
fprintf(stat_config.output, "%s", prefix);
|
|
|
|
|
2016-05-25 03:52:38 +08:00
|
|
|
if (!csv_output && !no_indent)
|
2016-03-04 07:57:36 +08:00
|
|
|
fprintf(stat_config.output, "%*s",
|
|
|
|
aggr_header_lens[stat_config.aggr_mode], "");
|
2016-05-25 03:52:39 +08:00
|
|
|
if (csv_output) {
|
|
|
|
if (stat_config.interval)
|
|
|
|
fputs("time,", stat_config.output);
|
|
|
|
fputs(aggr_header_csv[stat_config.aggr_mode],
|
|
|
|
stat_config.output);
|
|
|
|
}
|
2016-03-04 07:57:36 +08:00
|
|
|
|
|
|
|
/* Print metrics headers only */
|
2016-06-23 22:26:15 +08:00
|
|
|
evlist__for_each_entry(evsel_list, counter) {
|
2016-03-04 07:57:36 +08:00
|
|
|
os.evsel = counter;
|
|
|
|
out.ctx = &os;
|
|
|
|
out.print_metric = print_metric_header;
|
|
|
|
out.new_line = new_line_metric;
|
|
|
|
os.evsel = counter;
|
|
|
|
perf_stat__print_shadow_stats(counter, 0,
|
|
|
|
0,
|
|
|
|
&out);
|
|
|
|
}
|
|
|
|
fputc('\n', stat_config.output);
|
|
|
|
}
|
|
|
|
|
2015-06-26 17:29:26 +08:00
|
|
|
static void print_interval(char *prefix, struct timespec *ts)
|
|
|
|
{
|
2015-07-21 20:31:24 +08:00
|
|
|
FILE *output = stat_config.output;
|
2015-06-26 17:29:26 +08:00
|
|
|
static int num_print_interval;
|
|
|
|
|
|
|
|
sprintf(prefix, "%6lu.%09lu%s", ts->tv_sec, ts->tv_nsec, csv_sep);
|
|
|
|
|
2016-05-25 03:52:38 +08:00
|
|
|
if (num_print_interval == 0 && !csv_output) {
|
2015-07-21 20:31:22 +08:00
|
|
|
switch (stat_config.aggr_mode) {
|
2015-06-26 17:29:26 +08:00
|
|
|
case AGGR_SOCKET:
|
2016-05-25 03:52:38 +08:00
|
|
|
fprintf(output, "# time socket cpus");
|
|
|
|
if (!metric_only)
|
|
|
|
fprintf(output, " counts %*s events\n", unit_width, "unit");
|
2015-06-26 17:29:26 +08:00
|
|
|
break;
|
|
|
|
case AGGR_CORE:
|
2016-05-25 03:52:38 +08:00
|
|
|
fprintf(output, "# time core cpus");
|
|
|
|
if (!metric_only)
|
|
|
|
fprintf(output, " counts %*s events\n", unit_width, "unit");
|
2015-06-26 17:29:26 +08:00
|
|
|
break;
|
|
|
|
case AGGR_NONE:
|
2016-05-25 03:52:38 +08:00
|
|
|
fprintf(output, "# time CPU");
|
|
|
|
if (!metric_only)
|
|
|
|
fprintf(output, " counts %*s events\n", unit_width, "unit");
|
2015-06-26 17:29:26 +08:00
|
|
|
break;
|
perf stat: Introduce --per-thread option
Currently all the -p option PID arguments tasks values get aggregated
and printed as single values.
Adding --per-tasks option to print values per task.
$ perf stat -e cycles,instructions --per-thread -p 30190,30242
^C
Performance counter stats for process id '30190,30242':
cat-30190 0 cycles
yes-30242 3,842,525,421 cycles
cat-30190 0 instructions
yes-30242 10,370,817,010 instructions
1.143155657 seconds time elapsed
Also works under interval mode:
$ perf stat -e cycles,instructions --per-thread -p 30190,30242 -I 1000
# time comm-pid counts unit events
1.000073435 cat-30190 89,058 cycles
1.000073435 yes-30242 3,360,786,902 cycles (100.00%)
1.000073435 cat-30190 14,066 instructions
1.000073435 yes-30242 9,069,937,462 instructions
2.000204830 cat-30190 0 cycles
2.000204830 yes-30242 3,351,667,626 cycles
2.000204830 cat-30190 0 instructions
2.000204830 yes-30242 9,045,796,885 instructions
^C 2.771286639 cat-30190 0 cycles
2.771286639 yes-30242 2,593,884,166 cycles
2.771286639 cat-30190 0 instructions
2.771286639 yes-30242 7,001,171,191 instructions
It works only with -t and -p options, otherwise following error is
printed:
$ perf stat -e cycles --per-thread -I 1000 ls
The --per-thread option is only available when monitoring via -p -t options.
-p, --pid <pid> stat events on existing process id
-t, --tid <tid> stat events on existing thread id
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-23-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-06-26 17:29:27 +08:00
|
|
|
case AGGR_THREAD:
|
2016-05-25 03:52:38 +08:00
|
|
|
fprintf(output, "# time comm-pid");
|
|
|
|
if (!metric_only)
|
|
|
|
fprintf(output, " counts %*s events\n", unit_width, "unit");
|
perf stat: Introduce --per-thread option
Currently all the -p option PID arguments tasks values get aggregated
and printed as single values.
Adding --per-tasks option to print values per task.
$ perf stat -e cycles,instructions --per-thread -p 30190,30242
^C
Performance counter stats for process id '30190,30242':
cat-30190 0 cycles
yes-30242 3,842,525,421 cycles
cat-30190 0 instructions
yes-30242 10,370,817,010 instructions
1.143155657 seconds time elapsed
Also works under interval mode:
$ perf stat -e cycles,instructions --per-thread -p 30190,30242 -I 1000
# time comm-pid counts unit events
1.000073435 cat-30190 89,058 cycles
1.000073435 yes-30242 3,360,786,902 cycles (100.00%)
1.000073435 cat-30190 14,066 instructions
1.000073435 yes-30242 9,069,937,462 instructions
2.000204830 cat-30190 0 cycles
2.000204830 yes-30242 3,351,667,626 cycles
2.000204830 cat-30190 0 instructions
2.000204830 yes-30242 9,045,796,885 instructions
^C 2.771286639 cat-30190 0 cycles
2.771286639 yes-30242 2,593,884,166 cycles
2.771286639 cat-30190 0 instructions
2.771286639 yes-30242 7,001,171,191 instructions
It works only with -t and -p options, otherwise following error is
printed:
$ perf stat -e cycles --per-thread -I 1000 ls
The --per-thread option is only available when monitoring via -p -t options.
-p, --pid <pid> stat events on existing process id
-t, --tid <tid> stat events on existing thread id
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-23-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-06-26 17:29:27 +08:00
|
|
|
break;
|
2015-06-26 17:29:26 +08:00
|
|
|
case AGGR_GLOBAL:
|
|
|
|
default:
|
2016-05-25 03:52:38 +08:00
|
|
|
fprintf(output, "# time");
|
|
|
|
if (!metric_only)
|
|
|
|
fprintf(output, " counts %*s events\n", unit_width, "unit");
|
2015-10-16 18:41:04 +08:00
|
|
|
case AGGR_UNSET:
|
|
|
|
break;
|
2015-06-26 17:29:26 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2016-05-25 03:52:38 +08:00
|
|
|
if (num_print_interval == 0 && metric_only)
|
|
|
|
print_metric_headers(" ", true);
|
2015-06-26 17:29:26 +08:00
|
|
|
if (++num_print_interval == 25)
|
|
|
|
num_print_interval = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void print_header(int argc, const char **argv)
|
2009-06-13 20:57:28 +08:00
|
|
|
{
|
2015-07-21 20:31:24 +08:00
|
|
|
FILE *output = stat_config.output;
|
2011-01-04 02:39:04 +08:00
|
|
|
int i;
|
2009-06-13 20:57:28 +08:00
|
|
|
|
2009-04-20 21:37:32 +08:00
|
|
|
fflush(stdout);
|
|
|
|
|
perf stat: Add csv-style output
This patch adds an option (-x/--field-separator) to print counts using a
CSV-style output. The user can pass a custom separator. This makes it very easy
to import counts directly into your favorite spreadsheet without having to
write scripts.
Example:
$ perf stat --field-separator=, -a -- sleep 1
4009.961740,task-clock-msecs
13,context-switches
2,CPU-migrations
189,page-faults
9596385684,cycles
3493659441,instructions
872897069,branches
41562,branch-misses
22424,cache-references
1289,cache-misses
Works also in non-aggregated mode:
$ perf stat -x , -a -A -- sleep 1
CPU0,1002.526168,task-clock-msecs
CPU1,1002.528365,task-clock-msecs
CPU2,1002.523360,task-clock-msecs
CPU3,1002.519878,task-clock-msecs
CPU0,1,context-switches
CPU1,5,context-switches
CPU2,5,context-switches
CPU3,6,context-switches
CPU0,0,CPU-migrations
CPU1,1,CPU-migrations
CPU2,0,CPU-migrations
CPU3,1,CPU-migrations
CPU0,2,page-faults
CPU1,6,page-faults
CPU2,9,page-faults
CPU3,174,page-faults
CPU0,2399439771,cycles
CPU1,2380369063,cycles
CPU2,2399142710,cycles
CPU3,2373161192,cycles
CPU0,872900618,instructions
CPU1,873030960,instructions
CPU2,872714525,instructions
CPU3,874460580,instructions
CPU0,221556839,branches
CPU1,218134342,branches
CPU2,218161730,branches
CPU3,218284093,branches
CPU0,18556,branch-misses
CPU1,1449,branch-misses
CPU2,3447,branch-misses
CPU3,12714,branch-misses
CPU0,8330,cache-references
CPU1,313844,cache-references
CPU2,47993728,cache-references
CPU3,826481,cache-references
CPU0,272,cache-misses
CPU1,5360,cache-misses
CPU2,1342193,cache-misses
CPU3,13992,cache-misses
This second version adds the ability to name a separator and uses
field-separator as the long option to be consistent with perf report.
Commiter note: Since we enabled --big-num by default in 201e0b0 and -x can't be
used with it, we need to notice if the user explicitely enabled or disabled -B,
add code to disable big_num if the user didn't explicitely set --big_num when
-x is used.
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederik Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: paulus@samba.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
LKML-Reference: <4cf68aa7.0fedd80a.5294.1203@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-02 00:49:05 +08:00
|
|
|
if (!csv_output) {
|
2011-08-16 04:22:33 +08:00
|
|
|
fprintf(output, "\n");
|
|
|
|
fprintf(output, " Performance counter stats for ");
|
2013-09-29 04:27:58 +08:00
|
|
|
if (target.system_wide)
|
|
|
|
fprintf(output, "\'system wide");
|
|
|
|
else if (target.cpu_list)
|
|
|
|
fprintf(output, "\'CPU(s) %s", target.cpu_list);
|
2013-11-13 03:46:16 +08:00
|
|
|
else if (!target__has_task(&target)) {
|
2015-11-05 22:40:55 +08:00
|
|
|
fprintf(output, "\'%s", argv ? argv[0] : "pipe");
|
|
|
|
for (i = 1; argv && (i < argc); i++)
|
2011-08-16 04:22:33 +08:00
|
|
|
fprintf(output, " %s", argv[i]);
|
2012-04-26 13:15:16 +08:00
|
|
|
} else if (target.pid)
|
|
|
|
fprintf(output, "process id \'%s", target.pid);
|
perf stat: Add csv-style output
This patch adds an option (-x/--field-separator) to print counts using a
CSV-style output. The user can pass a custom separator. This makes it very easy
to import counts directly into your favorite spreadsheet without having to
write scripts.
Example:
$ perf stat --field-separator=, -a -- sleep 1
4009.961740,task-clock-msecs
13,context-switches
2,CPU-migrations
189,page-faults
9596385684,cycles
3493659441,instructions
872897069,branches
41562,branch-misses
22424,cache-references
1289,cache-misses
Works also in non-aggregated mode:
$ perf stat -x , -a -A -- sleep 1
CPU0,1002.526168,task-clock-msecs
CPU1,1002.528365,task-clock-msecs
CPU2,1002.523360,task-clock-msecs
CPU3,1002.519878,task-clock-msecs
CPU0,1,context-switches
CPU1,5,context-switches
CPU2,5,context-switches
CPU3,6,context-switches
CPU0,0,CPU-migrations
CPU1,1,CPU-migrations
CPU2,0,CPU-migrations
CPU3,1,CPU-migrations
CPU0,2,page-faults
CPU1,6,page-faults
CPU2,9,page-faults
CPU3,174,page-faults
CPU0,2399439771,cycles
CPU1,2380369063,cycles
CPU2,2399142710,cycles
CPU3,2373161192,cycles
CPU0,872900618,instructions
CPU1,873030960,instructions
CPU2,872714525,instructions
CPU3,874460580,instructions
CPU0,221556839,branches
CPU1,218134342,branches
CPU2,218161730,branches
CPU3,218284093,branches
CPU0,18556,branch-misses
CPU1,1449,branch-misses
CPU2,3447,branch-misses
CPU3,12714,branch-misses
CPU0,8330,cache-references
CPU1,313844,cache-references
CPU2,47993728,cache-references
CPU3,826481,cache-references
CPU0,272,cache-misses
CPU1,5360,cache-misses
CPU2,1342193,cache-misses
CPU3,13992,cache-misses
This second version adds the ability to name a separator and uses
field-separator as the long option to be consistent with perf report.
Commiter note: Since we enabled --big-num by default in 201e0b0 and -x can't be
used with it, we need to notice if the user explicitely enabled or disabled -B,
add code to disable big_num if the user didn't explicitely set --big_num when
-x is used.
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederik Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: paulus@samba.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
LKML-Reference: <4cf68aa7.0fedd80a.5294.1203@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-02 00:49:05 +08:00
|
|
|
else
|
2012-04-26 13:15:16 +08:00
|
|
|
fprintf(output, "thread id \'%s", target.tid);
|
2009-06-04 01:36:07 +08:00
|
|
|
|
2011-08-16 04:22:33 +08:00
|
|
|
fprintf(output, "\'");
|
perf stat: Add csv-style output
This patch adds an option (-x/--field-separator) to print counts using a
CSV-style output. The user can pass a custom separator. This makes it very easy
to import counts directly into your favorite spreadsheet without having to
write scripts.
Example:
$ perf stat --field-separator=, -a -- sleep 1
4009.961740,task-clock-msecs
13,context-switches
2,CPU-migrations
189,page-faults
9596385684,cycles
3493659441,instructions
872897069,branches
41562,branch-misses
22424,cache-references
1289,cache-misses
Works also in non-aggregated mode:
$ perf stat -x , -a -A -- sleep 1
CPU0,1002.526168,task-clock-msecs
CPU1,1002.528365,task-clock-msecs
CPU2,1002.523360,task-clock-msecs
CPU3,1002.519878,task-clock-msecs
CPU0,1,context-switches
CPU1,5,context-switches
CPU2,5,context-switches
CPU3,6,context-switches
CPU0,0,CPU-migrations
CPU1,1,CPU-migrations
CPU2,0,CPU-migrations
CPU3,1,CPU-migrations
CPU0,2,page-faults
CPU1,6,page-faults
CPU2,9,page-faults
CPU3,174,page-faults
CPU0,2399439771,cycles
CPU1,2380369063,cycles
CPU2,2399142710,cycles
CPU3,2373161192,cycles
CPU0,872900618,instructions
CPU1,873030960,instructions
CPU2,872714525,instructions
CPU3,874460580,instructions
CPU0,221556839,branches
CPU1,218134342,branches
CPU2,218161730,branches
CPU3,218284093,branches
CPU0,18556,branch-misses
CPU1,1449,branch-misses
CPU2,3447,branch-misses
CPU3,12714,branch-misses
CPU0,8330,cache-references
CPU1,313844,cache-references
CPU2,47993728,cache-references
CPU3,826481,cache-references
CPU0,272,cache-misses
CPU1,5360,cache-misses
CPU2,1342193,cache-misses
CPU3,13992,cache-misses
This second version adds the ability to name a separator and uses
field-separator as the long option to be consistent with perf report.
Commiter note: Since we enabled --big-num by default in 201e0b0 and -x can't be
used with it, we need to notice if the user explicitely enabled or disabled -B,
add code to disable big_num if the user didn't explicitely set --big_num when
-x is used.
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederik Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: paulus@samba.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
LKML-Reference: <4cf68aa7.0fedd80a.5294.1203@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-02 00:49:05 +08:00
|
|
|
if (run_count > 1)
|
2011-08-16 04:22:33 +08:00
|
|
|
fprintf(output, " (%d runs)", run_count);
|
|
|
|
fprintf(output, ":\n\n");
|
perf stat: Add csv-style output
This patch adds an option (-x/--field-separator) to print counts using a
CSV-style output. The user can pass a custom separator. This makes it very easy
to import counts directly into your favorite spreadsheet without having to
write scripts.
Example:
$ perf stat --field-separator=, -a -- sleep 1
4009.961740,task-clock-msecs
13,context-switches
2,CPU-migrations
189,page-faults
9596385684,cycles
3493659441,instructions
872897069,branches
41562,branch-misses
22424,cache-references
1289,cache-misses
Works also in non-aggregated mode:
$ perf stat -x , -a -A -- sleep 1
CPU0,1002.526168,task-clock-msecs
CPU1,1002.528365,task-clock-msecs
CPU2,1002.523360,task-clock-msecs
CPU3,1002.519878,task-clock-msecs
CPU0,1,context-switches
CPU1,5,context-switches
CPU2,5,context-switches
CPU3,6,context-switches
CPU0,0,CPU-migrations
CPU1,1,CPU-migrations
CPU2,0,CPU-migrations
CPU3,1,CPU-migrations
CPU0,2,page-faults
CPU1,6,page-faults
CPU2,9,page-faults
CPU3,174,page-faults
CPU0,2399439771,cycles
CPU1,2380369063,cycles
CPU2,2399142710,cycles
CPU3,2373161192,cycles
CPU0,872900618,instructions
CPU1,873030960,instructions
CPU2,872714525,instructions
CPU3,874460580,instructions
CPU0,221556839,branches
CPU1,218134342,branches
CPU2,218161730,branches
CPU3,218284093,branches
CPU0,18556,branch-misses
CPU1,1449,branch-misses
CPU2,3447,branch-misses
CPU3,12714,branch-misses
CPU0,8330,cache-references
CPU1,313844,cache-references
CPU2,47993728,cache-references
CPU3,826481,cache-references
CPU0,272,cache-misses
CPU1,5360,cache-misses
CPU2,1342193,cache-misses
CPU3,13992,cache-misses
This second version adds the ability to name a separator and uses
field-separator as the long option to be consistent with perf report.
Commiter note: Since we enabled --big-num by default in 201e0b0 and -x can't be
used with it, we need to notice if the user explicitely enabled or disabled -B,
add code to disable big_num if the user didn't explicitely set --big_num when
-x is used.
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederik Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: paulus@samba.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
LKML-Reference: <4cf68aa7.0fedd80a.5294.1203@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-02 00:49:05 +08:00
|
|
|
}
|
2015-06-26 17:29:26 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static void print_footer(void)
|
|
|
|
{
|
2015-07-21 20:31:24 +08:00
|
|
|
FILE *output = stat_config.output;
|
|
|
|
|
2015-06-26 17:29:26 +08:00
|
|
|
if (!null_run)
|
|
|
|
fprintf(output, "\n");
|
|
|
|
fprintf(output, " %17.9f seconds time elapsed",
|
2016-08-09 01:57:04 +08:00
|
|
|
avg_stats(&walltime_nsecs_stats) / NSEC_PER_SEC);
|
2015-06-26 17:29:26 +08:00
|
|
|
if (run_count > 1) {
|
|
|
|
fprintf(output, " ");
|
|
|
|
print_noise_pct(stddev_stats(&walltime_nsecs_stats),
|
|
|
|
avg_stats(&walltime_nsecs_stats));
|
|
|
|
}
|
|
|
|
fprintf(output, "\n\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
static void print_counters(struct timespec *ts, int argc, const char **argv)
|
|
|
|
{
|
2015-07-21 20:31:25 +08:00
|
|
|
int interval = stat_config.interval;
|
2015-06-26 17:29:26 +08:00
|
|
|
struct perf_evsel *counter;
|
|
|
|
char buf[64], *prefix = NULL;
|
|
|
|
|
2015-11-05 22:40:50 +08:00
|
|
|
/* Do not print anything if we record to the pipe. */
|
|
|
|
if (STAT_RECORD && perf_stat.file.is_pipe)
|
|
|
|
return;
|
|
|
|
|
2015-06-26 17:29:26 +08:00
|
|
|
if (interval)
|
|
|
|
print_interval(prefix = buf, ts);
|
|
|
|
else
|
|
|
|
print_header(argc, argv);
|
2009-05-29 15:10:54 +08:00
|
|
|
|
2016-03-04 07:57:36 +08:00
|
|
|
if (metric_only) {
|
|
|
|
static int num_print_iv;
|
|
|
|
|
2016-05-25 03:52:38 +08:00
|
|
|
if (num_print_iv == 0 && !interval)
|
|
|
|
print_metric_headers(prefix, false);
|
2016-03-04 07:57:36 +08:00
|
|
|
if (num_print_iv++ == 25)
|
|
|
|
num_print_iv = 0;
|
|
|
|
if (stat_config.aggr_mode == AGGR_GLOBAL && prefix)
|
|
|
|
fprintf(stat_config.output, "%s", prefix);
|
|
|
|
}
|
|
|
|
|
2015-07-21 20:31:22 +08:00
|
|
|
switch (stat_config.aggr_mode) {
|
2013-02-14 20:57:29 +08:00
|
|
|
case AGGR_CORE:
|
2013-02-14 20:57:27 +08:00
|
|
|
case AGGR_SOCKET:
|
2015-06-26 17:29:26 +08:00
|
|
|
print_aggr(prefix);
|
2013-02-14 20:57:27 +08:00
|
|
|
break;
|
perf stat: Introduce --per-thread option
Currently all the -p option PID arguments tasks values get aggregated
and printed as single values.
Adding --per-tasks option to print values per task.
$ perf stat -e cycles,instructions --per-thread -p 30190,30242
^C
Performance counter stats for process id '30190,30242':
cat-30190 0 cycles
yes-30242 3,842,525,421 cycles
cat-30190 0 instructions
yes-30242 10,370,817,010 instructions
1.143155657 seconds time elapsed
Also works under interval mode:
$ perf stat -e cycles,instructions --per-thread -p 30190,30242 -I 1000
# time comm-pid counts unit events
1.000073435 cat-30190 89,058 cycles
1.000073435 yes-30242 3,360,786,902 cycles (100.00%)
1.000073435 cat-30190 14,066 instructions
1.000073435 yes-30242 9,069,937,462 instructions
2.000204830 cat-30190 0 cycles
2.000204830 yes-30242 3,351,667,626 cycles
2.000204830 cat-30190 0 instructions
2.000204830 yes-30242 9,045,796,885 instructions
^C 2.771286639 cat-30190 0 cycles
2.771286639 yes-30242 2,593,884,166 cycles
2.771286639 cat-30190 0 instructions
2.771286639 yes-30242 7,001,171,191 instructions
It works only with -t and -p options, otherwise following error is
printed:
$ perf stat -e cycles --per-thread -I 1000 ls
The --per-thread option is only available when monitoring via -p -t options.
-p, --pid <pid> stat events on existing process id
-t, --tid <tid> stat events on existing thread id
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-23-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-06-26 17:29:27 +08:00
|
|
|
case AGGR_THREAD:
|
2016-06-23 22:26:15 +08:00
|
|
|
evlist__for_each_entry(evsel_list, counter)
|
perf stat: Introduce --per-thread option
Currently all the -p option PID arguments tasks values get aggregated
and printed as single values.
Adding --per-tasks option to print values per task.
$ perf stat -e cycles,instructions --per-thread -p 30190,30242
^C
Performance counter stats for process id '30190,30242':
cat-30190 0 cycles
yes-30242 3,842,525,421 cycles
cat-30190 0 instructions
yes-30242 10,370,817,010 instructions
1.143155657 seconds time elapsed
Also works under interval mode:
$ perf stat -e cycles,instructions --per-thread -p 30190,30242 -I 1000
# time comm-pid counts unit events
1.000073435 cat-30190 89,058 cycles
1.000073435 yes-30242 3,360,786,902 cycles (100.00%)
1.000073435 cat-30190 14,066 instructions
1.000073435 yes-30242 9,069,937,462 instructions
2.000204830 cat-30190 0 cycles
2.000204830 yes-30242 3,351,667,626 cycles
2.000204830 cat-30190 0 instructions
2.000204830 yes-30242 9,045,796,885 instructions
^C 2.771286639 cat-30190 0 cycles
2.771286639 yes-30242 2,593,884,166 cycles
2.771286639 cat-30190 0 instructions
2.771286639 yes-30242 7,001,171,191 instructions
It works only with -t and -p options, otherwise following error is
printed:
$ perf stat -e cycles --per-thread -I 1000 ls
The --per-thread option is only available when monitoring via -p -t options.
-p, --pid <pid> stat events on existing process id
-t, --tid <tid> stat events on existing thread id
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-23-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-06-26 17:29:27 +08:00
|
|
|
print_aggr_thread(counter, prefix);
|
|
|
|
break;
|
2013-02-14 20:57:27 +08:00
|
|
|
case AGGR_GLOBAL:
|
2016-06-23 22:26:15 +08:00
|
|
|
evlist__for_each_entry(evsel_list, counter)
|
2015-06-26 17:29:26 +08:00
|
|
|
print_counter_aggr(counter, prefix);
|
2016-03-04 07:57:36 +08:00
|
|
|
if (metric_only)
|
|
|
|
fputc('\n', stat_config.output);
|
2013-02-14 20:57:27 +08:00
|
|
|
break;
|
|
|
|
case AGGR_NONE:
|
2016-03-04 07:57:37 +08:00
|
|
|
if (metric_only)
|
|
|
|
print_no_aggr_metric(prefix);
|
|
|
|
else {
|
2016-06-23 22:26:15 +08:00
|
|
|
evlist__for_each_entry(evsel_list, counter)
|
2016-03-04 07:57:37 +08:00
|
|
|
print_counter(counter, prefix);
|
|
|
|
}
|
2013-02-14 20:57:27 +08:00
|
|
|
break;
|
2015-10-16 18:41:04 +08:00
|
|
|
case AGGR_UNSET:
|
2013-02-14 20:57:27 +08:00
|
|
|
default:
|
|
|
|
break;
|
2010-11-16 17:05:01 +08:00
|
|
|
}
|
2009-04-20 21:37:32 +08:00
|
|
|
|
2015-06-26 17:29:26 +08:00
|
|
|
if (!interval && !csv_output)
|
|
|
|
print_footer();
|
|
|
|
|
2015-07-21 20:31:24 +08:00
|
|
|
fflush(stat_config.output);
|
2009-04-20 21:37:32 +08:00
|
|
|
}
|
|
|
|
|
2009-06-10 21:55:59 +08:00
|
|
|
static volatile int signr = -1;
|
|
|
|
|
2009-05-26 15:17:18 +08:00
|
|
|
static void skip_signal(int signo)
|
2009-04-20 21:37:32 +08:00
|
|
|
{
|
2015-07-21 20:31:25 +08:00
|
|
|
if ((child_pid == -1) || stat_config.interval)
|
2009-12-31 16:05:50 +08:00
|
|
|
done = 1;
|
|
|
|
|
2009-06-10 21:55:59 +08:00
|
|
|
signr = signo;
|
2013-06-04 23:44:26 +08:00
|
|
|
/*
|
|
|
|
* render child_pid harmless
|
|
|
|
* won't send SIGTERM to a random
|
|
|
|
* process in case of race condition
|
|
|
|
* and fast PID recycling
|
|
|
|
*/
|
|
|
|
child_pid = -1;
|
2009-06-10 21:55:59 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static void sig_atexit(void)
|
|
|
|
{
|
2013-06-04 23:44:26 +08:00
|
|
|
sigset_t set, oset;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* avoid race condition with SIGCHLD handler
|
|
|
|
* in skip_signal() which is modifying child_pid
|
|
|
|
* goal is to avoid send SIGTERM to a random
|
|
|
|
* process
|
|
|
|
*/
|
|
|
|
sigemptyset(&set);
|
|
|
|
sigaddset(&set, SIGCHLD);
|
|
|
|
sigprocmask(SIG_BLOCK, &set, &oset);
|
|
|
|
|
2009-10-04 08:35:01 +08:00
|
|
|
if (child_pid != -1)
|
|
|
|
kill(child_pid, SIGTERM);
|
|
|
|
|
2013-06-04 23:44:26 +08:00
|
|
|
sigprocmask(SIG_SETMASK, &oset, NULL);
|
|
|
|
|
2009-06-10 21:55:59 +08:00
|
|
|
if (signr == -1)
|
|
|
|
return;
|
|
|
|
|
|
|
|
signal(signr, SIG_DFL);
|
|
|
|
kill(getpid(), signr);
|
2009-05-26 15:17:18 +08:00
|
|
|
}
|
|
|
|
|
2012-09-11 06:15:03 +08:00
|
|
|
static int stat__set_big_num(const struct option *opt __maybe_unused,
|
|
|
|
const char *s __maybe_unused, int unset)
|
perf stat: Add csv-style output
This patch adds an option (-x/--field-separator) to print counts using a
CSV-style output. The user can pass a custom separator. This makes it very easy
to import counts directly into your favorite spreadsheet without having to
write scripts.
Example:
$ perf stat --field-separator=, -a -- sleep 1
4009.961740,task-clock-msecs
13,context-switches
2,CPU-migrations
189,page-faults
9596385684,cycles
3493659441,instructions
872897069,branches
41562,branch-misses
22424,cache-references
1289,cache-misses
Works also in non-aggregated mode:
$ perf stat -x , -a -A -- sleep 1
CPU0,1002.526168,task-clock-msecs
CPU1,1002.528365,task-clock-msecs
CPU2,1002.523360,task-clock-msecs
CPU3,1002.519878,task-clock-msecs
CPU0,1,context-switches
CPU1,5,context-switches
CPU2,5,context-switches
CPU3,6,context-switches
CPU0,0,CPU-migrations
CPU1,1,CPU-migrations
CPU2,0,CPU-migrations
CPU3,1,CPU-migrations
CPU0,2,page-faults
CPU1,6,page-faults
CPU2,9,page-faults
CPU3,174,page-faults
CPU0,2399439771,cycles
CPU1,2380369063,cycles
CPU2,2399142710,cycles
CPU3,2373161192,cycles
CPU0,872900618,instructions
CPU1,873030960,instructions
CPU2,872714525,instructions
CPU3,874460580,instructions
CPU0,221556839,branches
CPU1,218134342,branches
CPU2,218161730,branches
CPU3,218284093,branches
CPU0,18556,branch-misses
CPU1,1449,branch-misses
CPU2,3447,branch-misses
CPU3,12714,branch-misses
CPU0,8330,cache-references
CPU1,313844,cache-references
CPU2,47993728,cache-references
CPU3,826481,cache-references
CPU0,272,cache-misses
CPU1,5360,cache-misses
CPU2,1342193,cache-misses
CPU3,13992,cache-misses
This second version adds the ability to name a separator and uses
field-separator as the long option to be consistent with perf report.
Commiter note: Since we enabled --big-num by default in 201e0b0 and -x can't be
used with it, we need to notice if the user explicitely enabled or disabled -B,
add code to disable big_num if the user didn't explicitely set --big_num when
-x is used.
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederik Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: paulus@samba.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
LKML-Reference: <4cf68aa7.0fedd80a.5294.1203@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-02 00:49:05 +08:00
|
|
|
{
|
|
|
|
big_num_opt = unset ? 0 : 1;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
perf stat: Basic support for TopDown in perf stat
Add basic plumbing for TopDown in perf stat
TopDown is intended to replace the frontend cycles idle/ backend cycles
idle metrics in standard perf stat output. These metrics are not
reliable in many workloads, due to out of order effects.
This implements a new --topdown mode in perf stat (similar to
--transaction) that measures the pipe line bottlenecks using
standardized formulas. The measurement can be all done with 5 counters
(one fixed counter)
The result are four metrics:
FrontendBound, BackendBound, BadSpeculation, Retiring
that describe the CPU pipeline behavior on a high level.
The full top down methology has many hierarchical metrics. This
implementation only supports level 1 which can be collected without
multiplexing. A full implementation of top down on top of perf is
available in pmu-tools toplev. (http://github.com/andikleen/pmu-tools)
The current version works on Intel Core CPUs starting with Sandy Bridge,
and Atom CPUs starting with Silvermont. In principle the generic
metrics should be also implementable on other out of order CPUs.
TopDown level 1 uses a set of abstracted metrics which are generic to
out of order CPU cores (although some CPUs may not implement all of
them):
topdown-total-slots Available slots in the pipeline
topdown-slots-issued Slots issued into the pipeline
topdown-slots-retired Slots successfully retired
topdown-fetch-bubbles Pipeline gaps in the frontend
topdown-recovery-bubbles Pipeline gaps during recovery
from misspeculation
These metrics then allow to compute four useful metrics:
FrontendBound, BackendBound, Retiring, BadSpeculation.
Add a new --topdown options to enable events. When --topdown is
specified set up events for all topdown events supported by the kernel.
Add topdown-* as a special case to the event parser, as is needed for
all events containing -.
The actual code to compute the metrics is in follow-on patches.
v2: Use standard sysctl read function.
v3: Move x86 specific code to arch/
v4: Enable --metric-only implicitly for topdown.
v5: Add --single-thread option to not force per core mode
v6: Fix output order of topdown metrics
v7: Allow combining with -d
v8: Remove --single-thread again
v9: Rename functions, adding arch_ and topdown_.
v10: Expand man page and describe TopDown better
Paste intro into commit description.
Print error when malloc fails.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1464119559-17203-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-30 23:49:42 +08:00
|
|
|
static int enable_metric_only(const struct option *opt __maybe_unused,
|
|
|
|
const char *s __maybe_unused, int unset)
|
|
|
|
{
|
|
|
|
force_metric_only = true;
|
|
|
|
metric_only = !unset;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2015-11-05 22:40:45 +08:00
|
|
|
static const struct option stat_options[] = {
|
|
|
|
OPT_BOOLEAN('T', "transaction", &transaction_run,
|
|
|
|
"hardware transaction statistics"),
|
|
|
|
OPT_CALLBACK('e', "event", &evsel_list, "event",
|
|
|
|
"event selector. use 'perf list' to list available events",
|
|
|
|
parse_events_option),
|
|
|
|
OPT_CALLBACK(0, "filter", &evsel_list, "filter",
|
|
|
|
"event filter", parse_filter),
|
|
|
|
OPT_BOOLEAN('i', "no-inherit", &no_inherit,
|
|
|
|
"child tasks do not inherit counters"),
|
|
|
|
OPT_STRING('p', "pid", &target.pid, "pid",
|
|
|
|
"stat events on existing process id"),
|
|
|
|
OPT_STRING('t', "tid", &target.tid, "tid",
|
|
|
|
"stat events on existing thread id"),
|
|
|
|
OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
|
|
|
|
"system-wide collection from all CPUs"),
|
|
|
|
OPT_BOOLEAN('g', "group", &group,
|
|
|
|
"put the counters into a counter group"),
|
|
|
|
OPT_BOOLEAN('c', "scale", &stat_config.scale, "scale/normalize counters"),
|
|
|
|
OPT_INCR('v', "verbose", &verbose,
|
|
|
|
"be more verbose (show counter open errors, etc)"),
|
|
|
|
OPT_INTEGER('r', "repeat", &run_count,
|
|
|
|
"repeat command and print average + stddev (max: 100, forever: 0)"),
|
|
|
|
OPT_BOOLEAN('n', "null", &null_run,
|
|
|
|
"null run - dont start any counters"),
|
|
|
|
OPT_INCR('d', "detailed", &detailed_run,
|
|
|
|
"detailed run - start a lot of events"),
|
|
|
|
OPT_BOOLEAN('S', "sync", &sync_run,
|
|
|
|
"call sync() before starting a run"),
|
|
|
|
OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
|
|
|
|
"print large numbers with thousands\' separators",
|
|
|
|
stat__set_big_num),
|
|
|
|
OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
|
|
|
|
"list of cpus to monitor in system-wide"),
|
|
|
|
OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode,
|
|
|
|
"disable CPU count aggregation", AGGR_NONE),
|
|
|
|
OPT_STRING('x', "field-separator", &csv_sep, "separator",
|
|
|
|
"print counts with custom separator"),
|
|
|
|
OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
|
|
|
|
"monitor event in cgroup name only", parse_cgroups),
|
|
|
|
OPT_STRING('o', "output", &output_name, "file", "output file name"),
|
|
|
|
OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
|
|
|
|
OPT_INTEGER(0, "log-fd", &output_fd,
|
|
|
|
"log output to fd, instead of stderr"),
|
|
|
|
OPT_STRING(0, "pre", &pre_cmd, "command",
|
|
|
|
"command to run prior to the measured command"),
|
|
|
|
OPT_STRING(0, "post", &post_cmd, "command",
|
|
|
|
"command to run after to the measured command"),
|
|
|
|
OPT_UINTEGER('I', "interval-print", &stat_config.interval,
|
|
|
|
"print counts at regular interval in ms (>= 10)"),
|
|
|
|
OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode,
|
|
|
|
"aggregate counts per processor socket", AGGR_SOCKET),
|
|
|
|
OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode,
|
|
|
|
"aggregate counts per physical processor core", AGGR_CORE),
|
|
|
|
OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode,
|
|
|
|
"aggregate counts per thread", AGGR_THREAD),
|
|
|
|
OPT_UINTEGER('D', "delay", &initial_delay,
|
|
|
|
"ms to wait before starting measurement after program start"),
|
perf stat: Basic support for TopDown in perf stat
Add basic plumbing for TopDown in perf stat
TopDown is intended to replace the frontend cycles idle/ backend cycles
idle metrics in standard perf stat output. These metrics are not
reliable in many workloads, due to out of order effects.
This implements a new --topdown mode in perf stat (similar to
--transaction) that measures the pipe line bottlenecks using
standardized formulas. The measurement can be all done with 5 counters
(one fixed counter)
The result are four metrics:
FrontendBound, BackendBound, BadSpeculation, Retiring
that describe the CPU pipeline behavior on a high level.
The full top down methology has many hierarchical metrics. This
implementation only supports level 1 which can be collected without
multiplexing. A full implementation of top down on top of perf is
available in pmu-tools toplev. (http://github.com/andikleen/pmu-tools)
The current version works on Intel Core CPUs starting with Sandy Bridge,
and Atom CPUs starting with Silvermont. In principle the generic
metrics should be also implementable on other out of order CPUs.
TopDown level 1 uses a set of abstracted metrics which are generic to
out of order CPU cores (although some CPUs may not implement all of
them):
topdown-total-slots Available slots in the pipeline
topdown-slots-issued Slots issued into the pipeline
topdown-slots-retired Slots successfully retired
topdown-fetch-bubbles Pipeline gaps in the frontend
topdown-recovery-bubbles Pipeline gaps during recovery
from misspeculation
These metrics then allow to compute four useful metrics:
FrontendBound, BackendBound, Retiring, BadSpeculation.
Add a new --topdown options to enable events. When --topdown is
specified set up events for all topdown events supported by the kernel.
Add topdown-* as a special case to the event parser, as is needed for
all events containing -.
The actual code to compute the metrics is in follow-on patches.
v2: Use standard sysctl read function.
v3: Move x86 specific code to arch/
v4: Enable --metric-only implicitly for topdown.
v5: Add --single-thread option to not force per core mode
v6: Fix output order of topdown metrics
v7: Allow combining with -d
v8: Remove --single-thread again
v9: Rename functions, adding arch_ and topdown_.
v10: Expand man page and describe TopDown better
Paste intro into commit description.
Print error when malloc fails.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1464119559-17203-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-30 23:49:42 +08:00
|
|
|
OPT_CALLBACK_NOOPT(0, "metric-only", &metric_only, NULL,
|
|
|
|
"Only print computed metrics. No raw values", enable_metric_only),
|
|
|
|
OPT_BOOLEAN(0, "topdown", &topdown_run,
|
|
|
|
"measure topdown level 1 statistics"),
|
2015-11-05 22:40:45 +08:00
|
|
|
OPT_END()
|
|
|
|
};
|
|
|
|
|
2015-10-16 18:41:15 +08:00
|
|
|
static int perf_stat__get_socket(struct cpu_map *map, int cpu)
|
|
|
|
{
|
|
|
|
return cpu_map__get_socket(map, cpu, NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int perf_stat__get_core(struct cpu_map *map, int cpu)
|
|
|
|
{
|
|
|
|
return cpu_map__get_core(map, cpu, NULL);
|
|
|
|
}
|
|
|
|
|
2015-10-25 22:51:18 +08:00
|
|
|
static int cpu_map__get_max(struct cpu_map *map)
|
|
|
|
{
|
|
|
|
int i, max = -1;
|
|
|
|
|
|
|
|
for (i = 0; i < map->nr; i++) {
|
|
|
|
if (map->map[i] > max)
|
|
|
|
max = map->map[i];
|
|
|
|
}
|
|
|
|
|
|
|
|
return max;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct cpu_map *cpus_aggr_map;
|
|
|
|
|
|
|
|
static int perf_stat__get_aggr(aggr_get_id_t get_id, struct cpu_map *map, int idx)
|
|
|
|
{
|
|
|
|
int cpu;
|
|
|
|
|
|
|
|
if (idx >= map->nr)
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
cpu = map->map[idx];
|
|
|
|
|
|
|
|
if (cpus_aggr_map->map[cpu] == -1)
|
|
|
|
cpus_aggr_map->map[cpu] = get_id(map, idx);
|
|
|
|
|
|
|
|
return cpus_aggr_map->map[cpu];
|
|
|
|
}
|
|
|
|
|
|
|
|
static int perf_stat__get_socket_cached(struct cpu_map *map, int idx)
|
|
|
|
{
|
|
|
|
return perf_stat__get_aggr(perf_stat__get_socket, map, idx);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int perf_stat__get_core_cached(struct cpu_map *map, int idx)
|
|
|
|
{
|
|
|
|
return perf_stat__get_aggr(perf_stat__get_core, map, idx);
|
|
|
|
}
|
|
|
|
|
2013-02-14 20:57:27 +08:00
|
|
|
static int perf_stat_init_aggr_mode(void)
|
|
|
|
{
|
2015-10-25 22:51:18 +08:00
|
|
|
int nr;
|
|
|
|
|
2015-07-21 20:31:22 +08:00
|
|
|
switch (stat_config.aggr_mode) {
|
2013-02-14 20:57:27 +08:00
|
|
|
case AGGR_SOCKET:
|
|
|
|
if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
|
|
|
|
perror("cannot build socket map");
|
|
|
|
return -1;
|
|
|
|
}
|
2015-10-25 22:51:18 +08:00
|
|
|
aggr_get_id = perf_stat__get_socket_cached;
|
2013-02-14 20:57:27 +08:00
|
|
|
break;
|
2013-02-14 20:57:29 +08:00
|
|
|
case AGGR_CORE:
|
|
|
|
if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
|
|
|
|
perror("cannot build core map");
|
|
|
|
return -1;
|
|
|
|
}
|
2015-10-25 22:51:18 +08:00
|
|
|
aggr_get_id = perf_stat__get_core_cached;
|
2013-02-14 20:57:29 +08:00
|
|
|
break;
|
2013-02-14 20:57:27 +08:00
|
|
|
case AGGR_NONE:
|
|
|
|
case AGGR_GLOBAL:
|
perf stat: Introduce --per-thread option
Currently all the -p option PID arguments tasks values get aggregated
and printed as single values.
Adding --per-tasks option to print values per task.
$ perf stat -e cycles,instructions --per-thread -p 30190,30242
^C
Performance counter stats for process id '30190,30242':
cat-30190 0 cycles
yes-30242 3,842,525,421 cycles
cat-30190 0 instructions
yes-30242 10,370,817,010 instructions
1.143155657 seconds time elapsed
Also works under interval mode:
$ perf stat -e cycles,instructions --per-thread -p 30190,30242 -I 1000
# time comm-pid counts unit events
1.000073435 cat-30190 89,058 cycles
1.000073435 yes-30242 3,360,786,902 cycles (100.00%)
1.000073435 cat-30190 14,066 instructions
1.000073435 yes-30242 9,069,937,462 instructions
2.000204830 cat-30190 0 cycles
2.000204830 yes-30242 3,351,667,626 cycles
2.000204830 cat-30190 0 instructions
2.000204830 yes-30242 9,045,796,885 instructions
^C 2.771286639 cat-30190 0 cycles
2.771286639 yes-30242 2,593,884,166 cycles
2.771286639 cat-30190 0 instructions
2.771286639 yes-30242 7,001,171,191 instructions
It works only with -t and -p options, otherwise following error is
printed:
$ perf stat -e cycles --per-thread -I 1000 ls
The --per-thread option is only available when monitoring via -p -t options.
-p, --pid <pid> stat events on existing process id
-t, --tid <tid> stat events on existing thread id
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-23-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-06-26 17:29:27 +08:00
|
|
|
case AGGR_THREAD:
|
2015-10-16 18:41:04 +08:00
|
|
|
case AGGR_UNSET:
|
2013-02-14 20:57:27 +08:00
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
2015-10-25 22:51:18 +08:00
|
|
|
|
|
|
|
/*
|
|
|
|
* The evsel_list->cpus is the base we operate on,
|
|
|
|
* taking the highest cpu number to be the size of
|
|
|
|
* the aggregation translate cpumap.
|
|
|
|
*/
|
|
|
|
nr = cpu_map__get_max(evsel_list->cpus);
|
|
|
|
cpus_aggr_map = cpu_map__empty_new(nr + 1);
|
|
|
|
return cpus_aggr_map ? 0 : -ENOMEM;
|
2013-02-14 20:57:27 +08:00
|
|
|
}
|
|
|
|
|
2015-12-09 10:11:27 +08:00
|
|
|
static void perf_stat__exit_aggr_mode(void)
|
|
|
|
{
|
|
|
|
cpu_map__put(aggr_map);
|
|
|
|
cpu_map__put(cpus_aggr_map);
|
|
|
|
aggr_map = NULL;
|
|
|
|
cpus_aggr_map = NULL;
|
|
|
|
}
|
|
|
|
|
2015-11-05 22:40:58 +08:00
|
|
|
static inline int perf_env__get_cpu(struct perf_env *env, struct cpu_map *map, int idx)
|
|
|
|
{
|
|
|
|
int cpu;
|
|
|
|
|
|
|
|
if (idx > map->nr)
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
cpu = map->map[idx];
|
|
|
|
|
|
|
|
if (cpu >= env->nr_cpus_online)
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
return cpu;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int perf_env__get_socket(struct cpu_map *map, int idx, void *data)
|
|
|
|
{
|
|
|
|
struct perf_env *env = data;
|
|
|
|
int cpu = perf_env__get_cpu(env, map, idx);
|
|
|
|
|
|
|
|
return cpu == -1 ? -1 : env->cpu[cpu].socket_id;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int perf_env__get_core(struct cpu_map *map, int idx, void *data)
|
|
|
|
{
|
|
|
|
struct perf_env *env = data;
|
|
|
|
int core = -1, cpu = perf_env__get_cpu(env, map, idx);
|
|
|
|
|
|
|
|
if (cpu != -1) {
|
|
|
|
int socket_id = env->cpu[cpu].socket_id;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Encode socket in upper 16 bits
|
|
|
|
* core_id is relative to socket, and
|
|
|
|
* we need a global id. So we combine
|
|
|
|
* socket + core id.
|
|
|
|
*/
|
|
|
|
core = (socket_id << 16) | (env->cpu[cpu].core_id & 0xffff);
|
|
|
|
}
|
|
|
|
|
|
|
|
return core;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int perf_env__build_socket_map(struct perf_env *env, struct cpu_map *cpus,
|
|
|
|
struct cpu_map **sockp)
|
|
|
|
{
|
|
|
|
return cpu_map__build_map(cpus, sockp, perf_env__get_socket, env);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int perf_env__build_core_map(struct perf_env *env, struct cpu_map *cpus,
|
|
|
|
struct cpu_map **corep)
|
|
|
|
{
|
|
|
|
return cpu_map__build_map(cpus, corep, perf_env__get_core, env);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int perf_stat__get_socket_file(struct cpu_map *map, int idx)
|
|
|
|
{
|
|
|
|
return perf_env__get_socket(map, idx, &perf_stat.session->header.env);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int perf_stat__get_core_file(struct cpu_map *map, int idx)
|
|
|
|
{
|
|
|
|
return perf_env__get_core(map, idx, &perf_stat.session->header.env);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
|
|
|
|
{
|
|
|
|
struct perf_env *env = &st->session->header.env;
|
|
|
|
|
|
|
|
switch (stat_config.aggr_mode) {
|
|
|
|
case AGGR_SOCKET:
|
|
|
|
if (perf_env__build_socket_map(env, evsel_list->cpus, &aggr_map)) {
|
|
|
|
perror("cannot build socket map");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
aggr_get_id = perf_stat__get_socket_file;
|
|
|
|
break;
|
|
|
|
case AGGR_CORE:
|
|
|
|
if (perf_env__build_core_map(env, evsel_list->cpus, &aggr_map)) {
|
|
|
|
perror("cannot build core map");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
aggr_get_id = perf_stat__get_core_file;
|
|
|
|
break;
|
|
|
|
case AGGR_NONE:
|
|
|
|
case AGGR_GLOBAL:
|
|
|
|
case AGGR_THREAD:
|
|
|
|
case AGGR_UNSET:
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
perf stat: Basic support for TopDown in perf stat
Add basic plumbing for TopDown in perf stat
TopDown is intended to replace the frontend cycles idle/ backend cycles
idle metrics in standard perf stat output. These metrics are not
reliable in many workloads, due to out of order effects.
This implements a new --topdown mode in perf stat (similar to
--transaction) that measures the pipe line bottlenecks using
standardized formulas. The measurement can be all done with 5 counters
(one fixed counter)
The result are four metrics:
FrontendBound, BackendBound, BadSpeculation, Retiring
that describe the CPU pipeline behavior on a high level.
The full top down methology has many hierarchical metrics. This
implementation only supports level 1 which can be collected without
multiplexing. A full implementation of top down on top of perf is
available in pmu-tools toplev. (http://github.com/andikleen/pmu-tools)
The current version works on Intel Core CPUs starting with Sandy Bridge,
and Atom CPUs starting with Silvermont. In principle the generic
metrics should be also implementable on other out of order CPUs.
TopDown level 1 uses a set of abstracted metrics which are generic to
out of order CPU cores (although some CPUs may not implement all of
them):
topdown-total-slots Available slots in the pipeline
topdown-slots-issued Slots issued into the pipeline
topdown-slots-retired Slots successfully retired
topdown-fetch-bubbles Pipeline gaps in the frontend
topdown-recovery-bubbles Pipeline gaps during recovery
from misspeculation
These metrics then allow to compute four useful metrics:
FrontendBound, BackendBound, Retiring, BadSpeculation.
Add a new --topdown options to enable events. When --topdown is
specified set up events for all topdown events supported by the kernel.
Add topdown-* as a special case to the event parser, as is needed for
all events containing -.
The actual code to compute the metrics is in follow-on patches.
v2: Use standard sysctl read function.
v3: Move x86 specific code to arch/
v4: Enable --metric-only implicitly for topdown.
v5: Add --single-thread option to not force per core mode
v6: Fix output order of topdown metrics
v7: Allow combining with -d
v8: Remove --single-thread again
v9: Rename functions, adding arch_ and topdown_.
v10: Expand man page and describe TopDown better
Paste intro into commit description.
Print error when malloc fails.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1464119559-17203-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-30 23:49:42 +08:00
|
|
|
static int topdown_filter_events(const char **attr, char **str, bool use_group)
|
|
|
|
{
|
|
|
|
int off = 0;
|
|
|
|
int i;
|
|
|
|
int len = 0;
|
|
|
|
char *s;
|
|
|
|
|
|
|
|
for (i = 0; attr[i]; i++) {
|
|
|
|
if (pmu_have_event("cpu", attr[i])) {
|
|
|
|
len += strlen(attr[i]) + 1;
|
|
|
|
attr[i - off] = attr[i];
|
|
|
|
} else
|
|
|
|
off++;
|
|
|
|
}
|
|
|
|
attr[i - off] = NULL;
|
|
|
|
|
|
|
|
*str = malloc(len + 1 + 2);
|
|
|
|
if (!*str)
|
|
|
|
return -1;
|
|
|
|
s = *str;
|
|
|
|
if (i - off == 0) {
|
|
|
|
*s = 0;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
if (use_group)
|
|
|
|
*s++ = '{';
|
|
|
|
for (i = 0; attr[i]; i++) {
|
|
|
|
strcpy(s, attr[i]);
|
|
|
|
s += strlen(s);
|
|
|
|
*s++ = ',';
|
|
|
|
}
|
|
|
|
if (use_group) {
|
|
|
|
s[-1] = '}';
|
|
|
|
*s = 0;
|
|
|
|
} else
|
|
|
|
s[-1] = 0;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
__weak bool arch_topdown_check_group(bool *warn)
|
|
|
|
{
|
|
|
|
*warn = false;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
__weak void arch_topdown_group_warn(void)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
perf stat: Add -d -d and -d -d -d options to show more CPU events
Print even more detailed statistics if requested via perf stat -d:
-d: detailed events, L1 and LLC data cache
-d -d: more detailed events, dTLB and iTLB events
-d -d -d: very detailed events, adding prefetch events
Full output looks like this now:
Performance counter stats for '/home/mingo/hackbench 10' (5 runs):
1703.674707 task-clock # 8.709 CPUs utilized ( +- 4.19% )
49,068 context-switches # 0.029 M/sec ( +- 16.66% )
8,303 CPU-migrations # 0.005 M/sec ( +- 24.90% )
17,397 page-faults # 0.010 M/sec ( +- 0.46% )
2,345,389,239 cycles # 1.377 GHz ( +- 4.61% ) [55.90%]
1,884,503,527 stalled-cycles-frontend # 80.35% frontend cycles idle ( +- 5.67% ) [50.39%]
743,919,737 stalled-cycles-backend # 31.72% backend cycles idle ( +- 8.75% ) [49.91%]
1,314,416,379 instructions # 0.56 insns per cycle
# 1.43 stalled cycles per insn ( +- 2.53% ) [60.87%]
272,592,567 branches # 160.003 M/sec ( +- 1.74% ) [56.56%]
3,794,846 branch-misses # 1.39% of all branches ( +- 6.59% ) [58.50%]
449,982,778 L1-dcache-loads # 264.125 M/sec ( +- 2.47% ) [49.88%]
22,404,961 L1-dcache-load-misses # 4.98% of all L1-dcache hits ( +- 6.08% ) [55.05%]
6,204,750 LLC-loads # 3.642 M/sec ( +- 8.91% ) [43.75%]
1,837,411 LLC-load-misses # 1.078 M/sec ( +- 7.27% ) [12.07%]
411,440,421 L1-icache-loads # 241.502 M/sec ( +- 5.60% ) [36.52%]
27,556,832 L1-icache-load-misses # 16.175 M/sec ( +- 7.46% ) [46.72%]
464,067,627 dTLB-loads # 272.392 M/sec ( +- 4.46% ) [54.17%]
10,765,648 dTLB-load-misses # 6.319 M/sec ( +- 3.18% ) [48.68%]
1,273,080,386 iTLB-loads # 747.256 M/sec ( +- 3.38% ) [47.53%]
117,481 iTLB-load-misses # 0.069 M/sec ( +- 14.99% ) [47.01%]
4,590,653 L1-dcache-prefetches # 2.695 M/sec ( +- 4.49% ) [46.19%]
1,712,660 L1-dcache-prefetch-misses # 1.005 M/sec ( +- 3.75% ) [44.82%]
0.195622057 seconds time elapsed ( +- 6.84% )
Also clean up the attribute construction code to be appending, and factor
it out into add_default_attributes().
Tweak the coverage percentage printout a bit, so that it's easier to view it
alongside the +- sttddev colum.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-to3kgu04449s64062val8b62@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-19 19:30:56 +08:00
|
|
|
/*
|
|
|
|
* Add default attributes, if there were no attributes specified or
|
|
|
|
* if -d/--detailed, -d -d or -d -d -d is used:
|
|
|
|
*/
|
|
|
|
static int add_default_attributes(void)
|
|
|
|
{
|
perf stat: Basic support for TopDown in perf stat
Add basic plumbing for TopDown in perf stat
TopDown is intended to replace the frontend cycles idle/ backend cycles
idle metrics in standard perf stat output. These metrics are not
reliable in many workloads, due to out of order effects.
This implements a new --topdown mode in perf stat (similar to
--transaction) that measures the pipe line bottlenecks using
standardized formulas. The measurement can be all done with 5 counters
(one fixed counter)
The result are four metrics:
FrontendBound, BackendBound, BadSpeculation, Retiring
that describe the CPU pipeline behavior on a high level.
The full top down methology has many hierarchical metrics. This
implementation only supports level 1 which can be collected without
multiplexing. A full implementation of top down on top of perf is
available in pmu-tools toplev. (http://github.com/andikleen/pmu-tools)
The current version works on Intel Core CPUs starting with Sandy Bridge,
and Atom CPUs starting with Silvermont. In principle the generic
metrics should be also implementable on other out of order CPUs.
TopDown level 1 uses a set of abstracted metrics which are generic to
out of order CPU cores (although some CPUs may not implement all of
them):
topdown-total-slots Available slots in the pipeline
topdown-slots-issued Slots issued into the pipeline
topdown-slots-retired Slots successfully retired
topdown-fetch-bubbles Pipeline gaps in the frontend
topdown-recovery-bubbles Pipeline gaps during recovery
from misspeculation
These metrics then allow to compute four useful metrics:
FrontendBound, BackendBound, Retiring, BadSpeculation.
Add a new --topdown options to enable events. When --topdown is
specified set up events for all topdown events supported by the kernel.
Add topdown-* as a special case to the event parser, as is needed for
all events containing -.
The actual code to compute the metrics is in follow-on patches.
v2: Use standard sysctl read function.
v3: Move x86 specific code to arch/
v4: Enable --metric-only implicitly for topdown.
v5: Add --single-thread option to not force per core mode
v6: Fix output order of topdown metrics
v7: Allow combining with -d
v8: Remove --single-thread again
v9: Rename functions, adding arch_ and topdown_.
v10: Expand man page and describe TopDown better
Paste intro into commit description.
Print error when malloc fails.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1464119559-17203-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-30 23:49:42 +08:00
|
|
|
int err;
|
perf stat: Check existence of frontend/backed stalled cycles
Only put the frontend/backend stalled cycles into the default perf stat
events when the CPU actually supports them.
This avoids empty columns with --metric-only on newer Intel CPUs.
Committer note:
Before:
$ perf stat ls
Performance counter stats for 'ls':
1.080893 task-clock (msec) # 0.619 CPUs utilized
0 context-switches # 0.000 K/sec
0 cpu-migrations # 0.000 K/sec
97 page-faults # 0.090 M/sec
3,327,741 cycles # 3.079 GHz
<not supported> stalled-cycles-frontend
<not supported> stalled-cycles-backend
1,609,544 instructions # 0.48 insn per cycle
319,117 branches # 295.235 M/sec
12,246 branch-misses # 3.84% of all branches
0.001746508 seconds time elapsed
$
After:
$ perf stat ls
Performance counter stats for 'ls':
0.693948 task-clock (msec) # 0.662 CPUs utilized
0 context-switches # 0.000 K/sec
0 cpu-migrations # 0.000 K/sec
95 page-faults # 0.137 M/sec
1,792,509 cycles # 2.583 GHz
1,599,047 instructions # 0.89 insn per cycle
316,328 branches # 455.838 M/sec
12,453 branch-misses # 3.94% of all branches
0.001048987 seconds time elapsed
$
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456532881-26621-2-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-27 08:27:56 +08:00
|
|
|
struct perf_event_attr default_attrs0[] = {
|
2012-10-02 02:20:58 +08:00
|
|
|
|
|
|
|
{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
|
|
|
|
{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
|
|
|
|
{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
|
|
|
|
{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
|
|
|
|
|
|
|
|
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
|
perf stat: Check existence of frontend/backed stalled cycles
Only put the frontend/backend stalled cycles into the default perf stat
events when the CPU actually supports them.
This avoids empty columns with --metric-only on newer Intel CPUs.
Committer note:
Before:
$ perf stat ls
Performance counter stats for 'ls':
1.080893 task-clock (msec) # 0.619 CPUs utilized
0 context-switches # 0.000 K/sec
0 cpu-migrations # 0.000 K/sec
97 page-faults # 0.090 M/sec
3,327,741 cycles # 3.079 GHz
<not supported> stalled-cycles-frontend
<not supported> stalled-cycles-backend
1,609,544 instructions # 0.48 insn per cycle
319,117 branches # 295.235 M/sec
12,246 branch-misses # 3.84% of all branches
0.001746508 seconds time elapsed
$
After:
$ perf stat ls
Performance counter stats for 'ls':
0.693948 task-clock (msec) # 0.662 CPUs utilized
0 context-switches # 0.000 K/sec
0 cpu-migrations # 0.000 K/sec
95 page-faults # 0.137 M/sec
1,792,509 cycles # 2.583 GHz
1,599,047 instructions # 0.89 insn per cycle
316,328 branches # 455.838 M/sec
12,453 branch-misses # 3.94% of all branches
0.001048987 seconds time elapsed
$
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456532881-26621-2-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-27 08:27:56 +08:00
|
|
|
};
|
|
|
|
struct perf_event_attr frontend_attrs[] = {
|
2012-10-02 02:20:58 +08:00
|
|
|
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
|
perf stat: Check existence of frontend/backed stalled cycles
Only put the frontend/backend stalled cycles into the default perf stat
events when the CPU actually supports them.
This avoids empty columns with --metric-only on newer Intel CPUs.
Committer note:
Before:
$ perf stat ls
Performance counter stats for 'ls':
1.080893 task-clock (msec) # 0.619 CPUs utilized
0 context-switches # 0.000 K/sec
0 cpu-migrations # 0.000 K/sec
97 page-faults # 0.090 M/sec
3,327,741 cycles # 3.079 GHz
<not supported> stalled-cycles-frontend
<not supported> stalled-cycles-backend
1,609,544 instructions # 0.48 insn per cycle
319,117 branches # 295.235 M/sec
12,246 branch-misses # 3.84% of all branches
0.001746508 seconds time elapsed
$
After:
$ perf stat ls
Performance counter stats for 'ls':
0.693948 task-clock (msec) # 0.662 CPUs utilized
0 context-switches # 0.000 K/sec
0 cpu-migrations # 0.000 K/sec
95 page-faults # 0.137 M/sec
1,792,509 cycles # 2.583 GHz
1,599,047 instructions # 0.89 insn per cycle
316,328 branches # 455.838 M/sec
12,453 branch-misses # 3.94% of all branches
0.001048987 seconds time elapsed
$
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456532881-26621-2-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-27 08:27:56 +08:00
|
|
|
};
|
|
|
|
struct perf_event_attr backend_attrs[] = {
|
2012-10-02 02:20:58 +08:00
|
|
|
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
|
perf stat: Check existence of frontend/backed stalled cycles
Only put the frontend/backend stalled cycles into the default perf stat
events when the CPU actually supports them.
This avoids empty columns with --metric-only on newer Intel CPUs.
Committer note:
Before:
$ perf stat ls
Performance counter stats for 'ls':
1.080893 task-clock (msec) # 0.619 CPUs utilized
0 context-switches # 0.000 K/sec
0 cpu-migrations # 0.000 K/sec
97 page-faults # 0.090 M/sec
3,327,741 cycles # 3.079 GHz
<not supported> stalled-cycles-frontend
<not supported> stalled-cycles-backend
1,609,544 instructions # 0.48 insn per cycle
319,117 branches # 295.235 M/sec
12,246 branch-misses # 3.84% of all branches
0.001746508 seconds time elapsed
$
After:
$ perf stat ls
Performance counter stats for 'ls':
0.693948 task-clock (msec) # 0.662 CPUs utilized
0 context-switches # 0.000 K/sec
0 cpu-migrations # 0.000 K/sec
95 page-faults # 0.137 M/sec
1,792,509 cycles # 2.583 GHz
1,599,047 instructions # 0.89 insn per cycle
316,328 branches # 455.838 M/sec
12,453 branch-misses # 3.94% of all branches
0.001048987 seconds time elapsed
$
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456532881-26621-2-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-27 08:27:56 +08:00
|
|
|
};
|
|
|
|
struct perf_event_attr default_attrs1[] = {
|
2012-10-02 02:20:58 +08:00
|
|
|
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
|
|
|
|
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
|
|
|
|
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
|
|
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Detailed stats (-d), covering the L1 and last level data caches:
|
|
|
|
*/
|
|
|
|
struct perf_event_attr detailed_attrs[] = {
|
|
|
|
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
|
|
.config =
|
|
|
|
PERF_COUNT_HW_CACHE_L1D << 0 |
|
|
|
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) |
|
|
|
|
(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
|
|
|
|
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
|
|
.config =
|
|
|
|
PERF_COUNT_HW_CACHE_L1D << 0 |
|
|
|
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) |
|
|
|
|
(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
|
|
|
|
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
|
|
.config =
|
|
|
|
PERF_COUNT_HW_CACHE_LL << 0 |
|
|
|
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) |
|
|
|
|
(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
|
|
|
|
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
|
|
.config =
|
|
|
|
PERF_COUNT_HW_CACHE_LL << 0 |
|
|
|
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) |
|
|
|
|
(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
|
|
|
|
*/
|
|
|
|
struct perf_event_attr very_detailed_attrs[] = {
|
|
|
|
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
|
|
.config =
|
|
|
|
PERF_COUNT_HW_CACHE_L1I << 0 |
|
|
|
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) |
|
|
|
|
(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
|
|
|
|
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
|
|
.config =
|
|
|
|
PERF_COUNT_HW_CACHE_L1I << 0 |
|
|
|
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) |
|
|
|
|
(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
|
|
|
|
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
|
|
.config =
|
|
|
|
PERF_COUNT_HW_CACHE_DTLB << 0 |
|
|
|
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) |
|
|
|
|
(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
|
|
|
|
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
|
|
.config =
|
|
|
|
PERF_COUNT_HW_CACHE_DTLB << 0 |
|
|
|
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) |
|
|
|
|
(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
|
|
|
|
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
|
|
.config =
|
|
|
|
PERF_COUNT_HW_CACHE_ITLB << 0 |
|
|
|
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) |
|
|
|
|
(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
|
|
|
|
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
|
|
.config =
|
|
|
|
PERF_COUNT_HW_CACHE_ITLB << 0 |
|
|
|
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) |
|
|
|
|
(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
|
|
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Very, very detailed stats (-d -d -d), adding prefetch events:
|
|
|
|
*/
|
|
|
|
struct perf_event_attr very_very_detailed_attrs[] = {
|
|
|
|
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
|
|
.config =
|
|
|
|
PERF_COUNT_HW_CACHE_L1D << 0 |
|
|
|
|
(PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
|
|
|
|
(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
|
|
|
|
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
|
|
.config =
|
|
|
|
PERF_COUNT_HW_CACHE_L1D << 0 |
|
|
|
|
(PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
|
|
|
|
(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
|
|
|
|
};
|
|
|
|
|
perf stat: Add -d -d and -d -d -d options to show more CPU events
Print even more detailed statistics if requested via perf stat -d:
-d: detailed events, L1 and LLC data cache
-d -d: more detailed events, dTLB and iTLB events
-d -d -d: very detailed events, adding prefetch events
Full output looks like this now:
Performance counter stats for '/home/mingo/hackbench 10' (5 runs):
1703.674707 task-clock # 8.709 CPUs utilized ( +- 4.19% )
49,068 context-switches # 0.029 M/sec ( +- 16.66% )
8,303 CPU-migrations # 0.005 M/sec ( +- 24.90% )
17,397 page-faults # 0.010 M/sec ( +- 0.46% )
2,345,389,239 cycles # 1.377 GHz ( +- 4.61% ) [55.90%]
1,884,503,527 stalled-cycles-frontend # 80.35% frontend cycles idle ( +- 5.67% ) [50.39%]
743,919,737 stalled-cycles-backend # 31.72% backend cycles idle ( +- 8.75% ) [49.91%]
1,314,416,379 instructions # 0.56 insns per cycle
# 1.43 stalled cycles per insn ( +- 2.53% ) [60.87%]
272,592,567 branches # 160.003 M/sec ( +- 1.74% ) [56.56%]
3,794,846 branch-misses # 1.39% of all branches ( +- 6.59% ) [58.50%]
449,982,778 L1-dcache-loads # 264.125 M/sec ( +- 2.47% ) [49.88%]
22,404,961 L1-dcache-load-misses # 4.98% of all L1-dcache hits ( +- 6.08% ) [55.05%]
6,204,750 LLC-loads # 3.642 M/sec ( +- 8.91% ) [43.75%]
1,837,411 LLC-load-misses # 1.078 M/sec ( +- 7.27% ) [12.07%]
411,440,421 L1-icache-loads # 241.502 M/sec ( +- 5.60% ) [36.52%]
27,556,832 L1-icache-load-misses # 16.175 M/sec ( +- 7.46% ) [46.72%]
464,067,627 dTLB-loads # 272.392 M/sec ( +- 4.46% ) [54.17%]
10,765,648 dTLB-load-misses # 6.319 M/sec ( +- 3.18% ) [48.68%]
1,273,080,386 iTLB-loads # 747.256 M/sec ( +- 3.38% ) [47.53%]
117,481 iTLB-load-misses # 0.069 M/sec ( +- 14.99% ) [47.01%]
4,590,653 L1-dcache-prefetches # 2.695 M/sec ( +- 4.49% ) [46.19%]
1,712,660 L1-dcache-prefetch-misses # 1.005 M/sec ( +- 3.75% ) [44.82%]
0.195622057 seconds time elapsed ( +- 6.84% )
Also clean up the attribute construction code to be appending, and factor
it out into add_default_attributes().
Tweak the coverage percentage printout a bit, so that it's easier to view it
alongside the +- sttddev colum.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-to3kgu04449s64062val8b62@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-19 19:30:56 +08:00
|
|
|
/* Set attrs if no event is selected and !null_run: */
|
|
|
|
if (null_run)
|
|
|
|
return 0;
|
|
|
|
|
2013-08-22 07:47:26 +08:00
|
|
|
if (transaction_run) {
|
|
|
|
if (pmu_have_event("cpu", "cycles-ct") &&
|
|
|
|
pmu_have_event("cpu", "el-start"))
|
2015-06-03 22:25:53 +08:00
|
|
|
err = parse_events(evsel_list, transaction_attrs, NULL);
|
2013-08-22 07:47:26 +08:00
|
|
|
else
|
2015-06-03 22:25:53 +08:00
|
|
|
err = parse_events(evsel_list, transaction_limited_attrs, NULL);
|
|
|
|
if (err) {
|
2013-08-22 07:47:26 +08:00
|
|
|
fprintf(stderr, "Cannot set up transaction events\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
perf stat: Basic support for TopDown in perf stat
Add basic plumbing for TopDown in perf stat
TopDown is intended to replace the frontend cycles idle/ backend cycles
idle metrics in standard perf stat output. These metrics are not
reliable in many workloads, due to out of order effects.
This implements a new --topdown mode in perf stat (similar to
--transaction) that measures the pipe line bottlenecks using
standardized formulas. The measurement can be all done with 5 counters
(one fixed counter)
The result are four metrics:
FrontendBound, BackendBound, BadSpeculation, Retiring
that describe the CPU pipeline behavior on a high level.
The full top down methology has many hierarchical metrics. This
implementation only supports level 1 which can be collected without
multiplexing. A full implementation of top down on top of perf is
available in pmu-tools toplev. (http://github.com/andikleen/pmu-tools)
The current version works on Intel Core CPUs starting with Sandy Bridge,
and Atom CPUs starting with Silvermont. In principle the generic
metrics should be also implementable on other out of order CPUs.
TopDown level 1 uses a set of abstracted metrics which are generic to
out of order CPU cores (although some CPUs may not implement all of
them):
topdown-total-slots Available slots in the pipeline
topdown-slots-issued Slots issued into the pipeline
topdown-slots-retired Slots successfully retired
topdown-fetch-bubbles Pipeline gaps in the frontend
topdown-recovery-bubbles Pipeline gaps during recovery
from misspeculation
These metrics then allow to compute four useful metrics:
FrontendBound, BackendBound, Retiring, BadSpeculation.
Add a new --topdown options to enable events. When --topdown is
specified set up events for all topdown events supported by the kernel.
Add topdown-* as a special case to the event parser, as is needed for
all events containing -.
The actual code to compute the metrics is in follow-on patches.
v2: Use standard sysctl read function.
v3: Move x86 specific code to arch/
v4: Enable --metric-only implicitly for topdown.
v5: Add --single-thread option to not force per core mode
v6: Fix output order of topdown metrics
v7: Allow combining with -d
v8: Remove --single-thread again
v9: Rename functions, adding arch_ and topdown_.
v10: Expand man page and describe TopDown better
Paste intro into commit description.
Print error when malloc fails.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1464119559-17203-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-30 23:49:42 +08:00
|
|
|
if (topdown_run) {
|
|
|
|
char *str = NULL;
|
|
|
|
bool warn = false;
|
|
|
|
|
|
|
|
if (stat_config.aggr_mode != AGGR_GLOBAL &&
|
|
|
|
stat_config.aggr_mode != AGGR_CORE) {
|
|
|
|
pr_err("top down event configuration requires --per-core mode\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
stat_config.aggr_mode = AGGR_CORE;
|
|
|
|
if (nr_cgroups || !target__has_cpu(&target)) {
|
|
|
|
pr_err("top down event configuration requires system-wide mode (-a)\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!force_metric_only)
|
|
|
|
metric_only = true;
|
|
|
|
if (topdown_filter_events(topdown_attrs, &str,
|
|
|
|
arch_topdown_check_group(&warn)) < 0) {
|
|
|
|
pr_err("Out of memory\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (topdown_attrs[0] && str) {
|
|
|
|
if (warn)
|
|
|
|
arch_topdown_group_warn();
|
|
|
|
err = parse_events(evsel_list, str, NULL);
|
|
|
|
if (err) {
|
|
|
|
fprintf(stderr,
|
|
|
|
"Cannot set up top down events %s: %d\n",
|
|
|
|
str, err);
|
|
|
|
free(str);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
fprintf(stderr, "System does not support topdown\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
free(str);
|
|
|
|
}
|
|
|
|
|
perf stat: Add -d -d and -d -d -d options to show more CPU events
Print even more detailed statistics if requested via perf stat -d:
-d: detailed events, L1 and LLC data cache
-d -d: more detailed events, dTLB and iTLB events
-d -d -d: very detailed events, adding prefetch events
Full output looks like this now:
Performance counter stats for '/home/mingo/hackbench 10' (5 runs):
1703.674707 task-clock # 8.709 CPUs utilized ( +- 4.19% )
49,068 context-switches # 0.029 M/sec ( +- 16.66% )
8,303 CPU-migrations # 0.005 M/sec ( +- 24.90% )
17,397 page-faults # 0.010 M/sec ( +- 0.46% )
2,345,389,239 cycles # 1.377 GHz ( +- 4.61% ) [55.90%]
1,884,503,527 stalled-cycles-frontend # 80.35% frontend cycles idle ( +- 5.67% ) [50.39%]
743,919,737 stalled-cycles-backend # 31.72% backend cycles idle ( +- 8.75% ) [49.91%]
1,314,416,379 instructions # 0.56 insns per cycle
# 1.43 stalled cycles per insn ( +- 2.53% ) [60.87%]
272,592,567 branches # 160.003 M/sec ( +- 1.74% ) [56.56%]
3,794,846 branch-misses # 1.39% of all branches ( +- 6.59% ) [58.50%]
449,982,778 L1-dcache-loads # 264.125 M/sec ( +- 2.47% ) [49.88%]
22,404,961 L1-dcache-load-misses # 4.98% of all L1-dcache hits ( +- 6.08% ) [55.05%]
6,204,750 LLC-loads # 3.642 M/sec ( +- 8.91% ) [43.75%]
1,837,411 LLC-load-misses # 1.078 M/sec ( +- 7.27% ) [12.07%]
411,440,421 L1-icache-loads # 241.502 M/sec ( +- 5.60% ) [36.52%]
27,556,832 L1-icache-load-misses # 16.175 M/sec ( +- 7.46% ) [46.72%]
464,067,627 dTLB-loads # 272.392 M/sec ( +- 4.46% ) [54.17%]
10,765,648 dTLB-load-misses # 6.319 M/sec ( +- 3.18% ) [48.68%]
1,273,080,386 iTLB-loads # 747.256 M/sec ( +- 3.38% ) [47.53%]
117,481 iTLB-load-misses # 0.069 M/sec ( +- 14.99% ) [47.01%]
4,590,653 L1-dcache-prefetches # 2.695 M/sec ( +- 4.49% ) [46.19%]
1,712,660 L1-dcache-prefetch-misses # 1.005 M/sec ( +- 3.75% ) [44.82%]
0.195622057 seconds time elapsed ( +- 6.84% )
Also clean up the attribute construction code to be appending, and factor
it out into add_default_attributes().
Tweak the coverage percentage printout a bit, so that it's easier to view it
alongside the +- sttddev colum.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-to3kgu04449s64062val8b62@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-19 19:30:56 +08:00
|
|
|
if (!evsel_list->nr_entries) {
|
perf stat: Use cpu-clock event for cpu targets
Currently 'perf stat' always counts task-clock event by default. But
it's somewhat confusing for system-wide targets (especially with 'sleep
N' as the 'sleep' task just sleeps and doesn't use cputime). Changing
to cpu-clock event instead for that case makes more sense IMHO.
Before:
# perf stat -a sleep 0.1
Performance counter stats for 'system wide':
403.038603 task-clock (msec) # 4.001 CPUs utilized
150 context-switches # 0.372 K/sec
7 cpu-migrations # 0.017 K/sec
71 page-faults # 0.176 K/sec
23,705,169 cycles # 0.059 GHz
15,888,166 instructions # 0.67 insn per cycle
3,326,078 branches # 8.253 M/sec
87,643 branch-misses # 2.64% of all branches
0.100737009 seconds time elapsed
#
After:
# perf stat -a sleep 0.1
Performance counter stats for 'system wide':
404.271182 cpu-clock (msec) # 4.000 CPUs utilized
143 context-switches # 0.354 K/sec
13 cpu-migrations # 0.032 K/sec
73 page-faults # 0.181 K/sec
22,119,220 cycles # 0.055 GHz
13,622,065 instructions # 0.62 insn per cycle
2,918,769 branches # 7.220 M/sec
85,033 branch-misses # 2.91% of all branches
0.101073089 seconds time elapsed
#
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1463119263-5569-3-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-13 14:01:03 +08:00
|
|
|
if (target__has_cpu(&target))
|
|
|
|
default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK;
|
|
|
|
|
perf stat: Check existence of frontend/backed stalled cycles
Only put the frontend/backend stalled cycles into the default perf stat
events when the CPU actually supports them.
This avoids empty columns with --metric-only on newer Intel CPUs.
Committer note:
Before:
$ perf stat ls
Performance counter stats for 'ls':
1.080893 task-clock (msec) # 0.619 CPUs utilized
0 context-switches # 0.000 K/sec
0 cpu-migrations # 0.000 K/sec
97 page-faults # 0.090 M/sec
3,327,741 cycles # 3.079 GHz
<not supported> stalled-cycles-frontend
<not supported> stalled-cycles-backend
1,609,544 instructions # 0.48 insn per cycle
319,117 branches # 295.235 M/sec
12,246 branch-misses # 3.84% of all branches
0.001746508 seconds time elapsed
$
After:
$ perf stat ls
Performance counter stats for 'ls':
0.693948 task-clock (msec) # 0.662 CPUs utilized
0 context-switches # 0.000 K/sec
0 cpu-migrations # 0.000 K/sec
95 page-faults # 0.137 M/sec
1,792,509 cycles # 2.583 GHz
1,599,047 instructions # 0.89 insn per cycle
316,328 branches # 455.838 M/sec
12,453 branch-misses # 3.94% of all branches
0.001048987 seconds time elapsed
$
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456532881-26621-2-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-27 08:27:56 +08:00
|
|
|
if (perf_evlist__add_default_attrs(evsel_list, default_attrs0) < 0)
|
|
|
|
return -1;
|
|
|
|
if (pmu_have_event("cpu", "stalled-cycles-frontend")) {
|
|
|
|
if (perf_evlist__add_default_attrs(evsel_list,
|
|
|
|
frontend_attrs) < 0)
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (pmu_have_event("cpu", "stalled-cycles-backend")) {
|
|
|
|
if (perf_evlist__add_default_attrs(evsel_list,
|
|
|
|
backend_attrs) < 0)
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (perf_evlist__add_default_attrs(evsel_list, default_attrs1) < 0)
|
2011-11-04 19:10:59 +08:00
|
|
|
return -1;
|
perf stat: Add -d -d and -d -d -d options to show more CPU events
Print even more detailed statistics if requested via perf stat -d:
-d: detailed events, L1 and LLC data cache
-d -d: more detailed events, dTLB and iTLB events
-d -d -d: very detailed events, adding prefetch events
Full output looks like this now:
Performance counter stats for '/home/mingo/hackbench 10' (5 runs):
1703.674707 task-clock # 8.709 CPUs utilized ( +- 4.19% )
49,068 context-switches # 0.029 M/sec ( +- 16.66% )
8,303 CPU-migrations # 0.005 M/sec ( +- 24.90% )
17,397 page-faults # 0.010 M/sec ( +- 0.46% )
2,345,389,239 cycles # 1.377 GHz ( +- 4.61% ) [55.90%]
1,884,503,527 stalled-cycles-frontend # 80.35% frontend cycles idle ( +- 5.67% ) [50.39%]
743,919,737 stalled-cycles-backend # 31.72% backend cycles idle ( +- 8.75% ) [49.91%]
1,314,416,379 instructions # 0.56 insns per cycle
# 1.43 stalled cycles per insn ( +- 2.53% ) [60.87%]
272,592,567 branches # 160.003 M/sec ( +- 1.74% ) [56.56%]
3,794,846 branch-misses # 1.39% of all branches ( +- 6.59% ) [58.50%]
449,982,778 L1-dcache-loads # 264.125 M/sec ( +- 2.47% ) [49.88%]
22,404,961 L1-dcache-load-misses # 4.98% of all L1-dcache hits ( +- 6.08% ) [55.05%]
6,204,750 LLC-loads # 3.642 M/sec ( +- 8.91% ) [43.75%]
1,837,411 LLC-load-misses # 1.078 M/sec ( +- 7.27% ) [12.07%]
411,440,421 L1-icache-loads # 241.502 M/sec ( +- 5.60% ) [36.52%]
27,556,832 L1-icache-load-misses # 16.175 M/sec ( +- 7.46% ) [46.72%]
464,067,627 dTLB-loads # 272.392 M/sec ( +- 4.46% ) [54.17%]
10,765,648 dTLB-load-misses # 6.319 M/sec ( +- 3.18% ) [48.68%]
1,273,080,386 iTLB-loads # 747.256 M/sec ( +- 3.38% ) [47.53%]
117,481 iTLB-load-misses # 0.069 M/sec ( +- 14.99% ) [47.01%]
4,590,653 L1-dcache-prefetches # 2.695 M/sec ( +- 4.49% ) [46.19%]
1,712,660 L1-dcache-prefetch-misses # 1.005 M/sec ( +- 3.75% ) [44.82%]
0.195622057 seconds time elapsed ( +- 6.84% )
Also clean up the attribute construction code to be appending, and factor
it out into add_default_attributes().
Tweak the coverage percentage printout a bit, so that it's easier to view it
alongside the +- sttddev colum.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-to3kgu04449s64062val8b62@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-19 19:30:56 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Detailed events get appended to the event list: */
|
|
|
|
|
|
|
|
if (detailed_run < 1)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
/* Append detailed run extra attributes: */
|
perf stat: Initialize default events wrt exclude_{guest,host}
When no event is specified the tools use perf_evlist__add_default(), that will
call event_attr_init to initialize the KVM exclusion bits.
When the change was made to the tools so that by default guest samples would be
excluded, the changes were made just to the parsing routines and to
perf_evlist__add_default(), not to perf_evlist__add_attrs, that is used so far
just by perf stat to add multiple events, according to the level of detail
specified.
Recently the tools were changed to reconstruct the event name from all the
details in perf_event_attr, not just from .type and .config, but taking into
account all the feature bits (.exclude_{guest,host,user,kernel,etc},
.precise_ip, etc).
That is when we noticed that the default for perf stat wasn't the one for the
rest of the tools, i.e. the .exclude_guest bit wasn't being set.
I.e. the default, that doesn't call event_attr_init was showing the :HG
modifier:
$ perf stat usleep 1
Performance counter stats for 'usleep 1':
0.942119 task-clock # 0.454 CPUs utilized
1 context-switches # 0.001 M/sec
0 CPU-migrations # 0.000 K/sec
126 page-faults # 0.134 M/sec
693,193 cycles:HG # 0.736 GHz [40.11%]
407,461 stalled-cycles-frontend:HG # 58.78% frontend cycles idle [72.29%]
365,403 stalled-cycles-backend:HG # 52.71% backend cycles idle
465,982 instructions:HG # 0.67 insns per cycle
# 0.87 stalled cycles per insn
89,760 branches:HG # 95.275 M/sec
6,178 branch-misses:HG # 6.88% of all branches
0.002077228 seconds time elapsed
While if one explicitely specifies the same events, which will make the parsing code
to be called and thus event_attr_init is called:
$ perf stat -e task-clock,context-switches,migrations,page-faults,cycles,stalled-cycles-frontend,stalled-cycles-backend,instructions,branches,branch-misses usleep 1
Performance counter stats for 'usleep 1':
1.040349 task-clock # 0.500 CPUs utilized
2 context-switches # 0.002 M/sec
0 CPU-migrations # 0.000 K/sec
127 page-faults # 0.122 M/sec
587,966 cycles # 0.565 GHz [13.18%]
459,167 stalled-cycles-frontend # 78.09% frontend cycles idle
390,249 stalled-cycles-backend # 66.37% backend cycles idle
504,006 instructions # 0.86 insns per cycle
# 0.91 stalled cycles per insn
96,455 branches # 92.714 M/sec
6,522 branch-misses # 6.76% of all branches [96.12%]
0.002078681 seconds time elapsed
Fix it by introducing a perf_evlist__add_default_attrs method that will call
evlist_attr_init in all the perf_event_attr entries before adding the events.
Reported-by: Ingo Molnar <mingo@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-4eysr236r0pgiyum9epwxw7s@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-05-31 00:53:54 +08:00
|
|
|
if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
|
2011-11-04 19:10:59 +08:00
|
|
|
return -1;
|
perf stat: Add -d -d and -d -d -d options to show more CPU events
Print even more detailed statistics if requested via perf stat -d:
-d: detailed events, L1 and LLC data cache
-d -d: more detailed events, dTLB and iTLB events
-d -d -d: very detailed events, adding prefetch events
Full output looks like this now:
Performance counter stats for '/home/mingo/hackbench 10' (5 runs):
1703.674707 task-clock # 8.709 CPUs utilized ( +- 4.19% )
49,068 context-switches # 0.029 M/sec ( +- 16.66% )
8,303 CPU-migrations # 0.005 M/sec ( +- 24.90% )
17,397 page-faults # 0.010 M/sec ( +- 0.46% )
2,345,389,239 cycles # 1.377 GHz ( +- 4.61% ) [55.90%]
1,884,503,527 stalled-cycles-frontend # 80.35% frontend cycles idle ( +- 5.67% ) [50.39%]
743,919,737 stalled-cycles-backend # 31.72% backend cycles idle ( +- 8.75% ) [49.91%]
1,314,416,379 instructions # 0.56 insns per cycle
# 1.43 stalled cycles per insn ( +- 2.53% ) [60.87%]
272,592,567 branches # 160.003 M/sec ( +- 1.74% ) [56.56%]
3,794,846 branch-misses # 1.39% of all branches ( +- 6.59% ) [58.50%]
449,982,778 L1-dcache-loads # 264.125 M/sec ( +- 2.47% ) [49.88%]
22,404,961 L1-dcache-load-misses # 4.98% of all L1-dcache hits ( +- 6.08% ) [55.05%]
6,204,750 LLC-loads # 3.642 M/sec ( +- 8.91% ) [43.75%]
1,837,411 LLC-load-misses # 1.078 M/sec ( +- 7.27% ) [12.07%]
411,440,421 L1-icache-loads # 241.502 M/sec ( +- 5.60% ) [36.52%]
27,556,832 L1-icache-load-misses # 16.175 M/sec ( +- 7.46% ) [46.72%]
464,067,627 dTLB-loads # 272.392 M/sec ( +- 4.46% ) [54.17%]
10,765,648 dTLB-load-misses # 6.319 M/sec ( +- 3.18% ) [48.68%]
1,273,080,386 iTLB-loads # 747.256 M/sec ( +- 3.38% ) [47.53%]
117,481 iTLB-load-misses # 0.069 M/sec ( +- 14.99% ) [47.01%]
4,590,653 L1-dcache-prefetches # 2.695 M/sec ( +- 4.49% ) [46.19%]
1,712,660 L1-dcache-prefetch-misses # 1.005 M/sec ( +- 3.75% ) [44.82%]
0.195622057 seconds time elapsed ( +- 6.84% )
Also clean up the attribute construction code to be appending, and factor
it out into add_default_attributes().
Tweak the coverage percentage printout a bit, so that it's easier to view it
alongside the +- sttddev colum.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-to3kgu04449s64062val8b62@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-19 19:30:56 +08:00
|
|
|
|
|
|
|
if (detailed_run < 2)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
/* Append very detailed run extra attributes: */
|
perf stat: Initialize default events wrt exclude_{guest,host}
When no event is specified the tools use perf_evlist__add_default(), that will
call event_attr_init to initialize the KVM exclusion bits.
When the change was made to the tools so that by default guest samples would be
excluded, the changes were made just to the parsing routines and to
perf_evlist__add_default(), not to perf_evlist__add_attrs, that is used so far
just by perf stat to add multiple events, according to the level of detail
specified.
Recently the tools were changed to reconstruct the event name from all the
details in perf_event_attr, not just from .type and .config, but taking into
account all the feature bits (.exclude_{guest,host,user,kernel,etc},
.precise_ip, etc).
That is when we noticed that the default for perf stat wasn't the one for the
rest of the tools, i.e. the .exclude_guest bit wasn't being set.
I.e. the default, that doesn't call event_attr_init was showing the :HG
modifier:
$ perf stat usleep 1
Performance counter stats for 'usleep 1':
0.942119 task-clock # 0.454 CPUs utilized
1 context-switches # 0.001 M/sec
0 CPU-migrations # 0.000 K/sec
126 page-faults # 0.134 M/sec
693,193 cycles:HG # 0.736 GHz [40.11%]
407,461 stalled-cycles-frontend:HG # 58.78% frontend cycles idle [72.29%]
365,403 stalled-cycles-backend:HG # 52.71% backend cycles idle
465,982 instructions:HG # 0.67 insns per cycle
# 0.87 stalled cycles per insn
89,760 branches:HG # 95.275 M/sec
6,178 branch-misses:HG # 6.88% of all branches
0.002077228 seconds time elapsed
While if one explicitely specifies the same events, which will make the parsing code
to be called and thus event_attr_init is called:
$ perf stat -e task-clock,context-switches,migrations,page-faults,cycles,stalled-cycles-frontend,stalled-cycles-backend,instructions,branches,branch-misses usleep 1
Performance counter stats for 'usleep 1':
1.040349 task-clock # 0.500 CPUs utilized
2 context-switches # 0.002 M/sec
0 CPU-migrations # 0.000 K/sec
127 page-faults # 0.122 M/sec
587,966 cycles # 0.565 GHz [13.18%]
459,167 stalled-cycles-frontend # 78.09% frontend cycles idle
390,249 stalled-cycles-backend # 66.37% backend cycles idle
504,006 instructions # 0.86 insns per cycle
# 0.91 stalled cycles per insn
96,455 branches # 92.714 M/sec
6,522 branch-misses # 6.76% of all branches [96.12%]
0.002078681 seconds time elapsed
Fix it by introducing a perf_evlist__add_default_attrs method that will call
evlist_attr_init in all the perf_event_attr entries before adding the events.
Reported-by: Ingo Molnar <mingo@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-4eysr236r0pgiyum9epwxw7s@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-05-31 00:53:54 +08:00
|
|
|
if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
|
2011-11-04 19:10:59 +08:00
|
|
|
return -1;
|
perf stat: Add -d -d and -d -d -d options to show more CPU events
Print even more detailed statistics if requested via perf stat -d:
-d: detailed events, L1 and LLC data cache
-d -d: more detailed events, dTLB and iTLB events
-d -d -d: very detailed events, adding prefetch events
Full output looks like this now:
Performance counter stats for '/home/mingo/hackbench 10' (5 runs):
1703.674707 task-clock # 8.709 CPUs utilized ( +- 4.19% )
49,068 context-switches # 0.029 M/sec ( +- 16.66% )
8,303 CPU-migrations # 0.005 M/sec ( +- 24.90% )
17,397 page-faults # 0.010 M/sec ( +- 0.46% )
2,345,389,239 cycles # 1.377 GHz ( +- 4.61% ) [55.90%]
1,884,503,527 stalled-cycles-frontend # 80.35% frontend cycles idle ( +- 5.67% ) [50.39%]
743,919,737 stalled-cycles-backend # 31.72% backend cycles idle ( +- 8.75% ) [49.91%]
1,314,416,379 instructions # 0.56 insns per cycle
# 1.43 stalled cycles per insn ( +- 2.53% ) [60.87%]
272,592,567 branches # 160.003 M/sec ( +- 1.74% ) [56.56%]
3,794,846 branch-misses # 1.39% of all branches ( +- 6.59% ) [58.50%]
449,982,778 L1-dcache-loads # 264.125 M/sec ( +- 2.47% ) [49.88%]
22,404,961 L1-dcache-load-misses # 4.98% of all L1-dcache hits ( +- 6.08% ) [55.05%]
6,204,750 LLC-loads # 3.642 M/sec ( +- 8.91% ) [43.75%]
1,837,411 LLC-load-misses # 1.078 M/sec ( +- 7.27% ) [12.07%]
411,440,421 L1-icache-loads # 241.502 M/sec ( +- 5.60% ) [36.52%]
27,556,832 L1-icache-load-misses # 16.175 M/sec ( +- 7.46% ) [46.72%]
464,067,627 dTLB-loads # 272.392 M/sec ( +- 4.46% ) [54.17%]
10,765,648 dTLB-load-misses # 6.319 M/sec ( +- 3.18% ) [48.68%]
1,273,080,386 iTLB-loads # 747.256 M/sec ( +- 3.38% ) [47.53%]
117,481 iTLB-load-misses # 0.069 M/sec ( +- 14.99% ) [47.01%]
4,590,653 L1-dcache-prefetches # 2.695 M/sec ( +- 4.49% ) [46.19%]
1,712,660 L1-dcache-prefetch-misses # 1.005 M/sec ( +- 3.75% ) [44.82%]
0.195622057 seconds time elapsed ( +- 6.84% )
Also clean up the attribute construction code to be appending, and factor
it out into add_default_attributes().
Tweak the coverage percentage printout a bit, so that it's easier to view it
alongside the +- sttddev colum.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-to3kgu04449s64062val8b62@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-19 19:30:56 +08:00
|
|
|
|
|
|
|
if (detailed_run < 3)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
/* Append very, very detailed run extra attributes: */
|
perf stat: Initialize default events wrt exclude_{guest,host}
When no event is specified the tools use perf_evlist__add_default(), that will
call event_attr_init to initialize the KVM exclusion bits.
When the change was made to the tools so that by default guest samples would be
excluded, the changes were made just to the parsing routines and to
perf_evlist__add_default(), not to perf_evlist__add_attrs, that is used so far
just by perf stat to add multiple events, according to the level of detail
specified.
Recently the tools were changed to reconstruct the event name from all the
details in perf_event_attr, not just from .type and .config, but taking into
account all the feature bits (.exclude_{guest,host,user,kernel,etc},
.precise_ip, etc).
That is when we noticed that the default for perf stat wasn't the one for the
rest of the tools, i.e. the .exclude_guest bit wasn't being set.
I.e. the default, that doesn't call event_attr_init was showing the :HG
modifier:
$ perf stat usleep 1
Performance counter stats for 'usleep 1':
0.942119 task-clock # 0.454 CPUs utilized
1 context-switches # 0.001 M/sec
0 CPU-migrations # 0.000 K/sec
126 page-faults # 0.134 M/sec
693,193 cycles:HG # 0.736 GHz [40.11%]
407,461 stalled-cycles-frontend:HG # 58.78% frontend cycles idle [72.29%]
365,403 stalled-cycles-backend:HG # 52.71% backend cycles idle
465,982 instructions:HG # 0.67 insns per cycle
# 0.87 stalled cycles per insn
89,760 branches:HG # 95.275 M/sec
6,178 branch-misses:HG # 6.88% of all branches
0.002077228 seconds time elapsed
While if one explicitely specifies the same events, which will make the parsing code
to be called and thus event_attr_init is called:
$ perf stat -e task-clock,context-switches,migrations,page-faults,cycles,stalled-cycles-frontend,stalled-cycles-backend,instructions,branches,branch-misses usleep 1
Performance counter stats for 'usleep 1':
1.040349 task-clock # 0.500 CPUs utilized
2 context-switches # 0.002 M/sec
0 CPU-migrations # 0.000 K/sec
127 page-faults # 0.122 M/sec
587,966 cycles # 0.565 GHz [13.18%]
459,167 stalled-cycles-frontend # 78.09% frontend cycles idle
390,249 stalled-cycles-backend # 66.37% backend cycles idle
504,006 instructions # 0.86 insns per cycle
# 0.91 stalled cycles per insn
96,455 branches # 92.714 M/sec
6,522 branch-misses # 6.76% of all branches [96.12%]
0.002078681 seconds time elapsed
Fix it by introducing a perf_evlist__add_default_attrs method that will call
evlist_attr_init in all the perf_event_attr entries before adding the events.
Reported-by: Ingo Molnar <mingo@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-4eysr236r0pgiyum9epwxw7s@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-05-31 00:53:54 +08:00
|
|
|
return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
|
perf stat: Add -d -d and -d -d -d options to show more CPU events
Print even more detailed statistics if requested via perf stat -d:
-d: detailed events, L1 and LLC data cache
-d -d: more detailed events, dTLB and iTLB events
-d -d -d: very detailed events, adding prefetch events
Full output looks like this now:
Performance counter stats for '/home/mingo/hackbench 10' (5 runs):
1703.674707 task-clock # 8.709 CPUs utilized ( +- 4.19% )
49,068 context-switches # 0.029 M/sec ( +- 16.66% )
8,303 CPU-migrations # 0.005 M/sec ( +- 24.90% )
17,397 page-faults # 0.010 M/sec ( +- 0.46% )
2,345,389,239 cycles # 1.377 GHz ( +- 4.61% ) [55.90%]
1,884,503,527 stalled-cycles-frontend # 80.35% frontend cycles idle ( +- 5.67% ) [50.39%]
743,919,737 stalled-cycles-backend # 31.72% backend cycles idle ( +- 8.75% ) [49.91%]
1,314,416,379 instructions # 0.56 insns per cycle
# 1.43 stalled cycles per insn ( +- 2.53% ) [60.87%]
272,592,567 branches # 160.003 M/sec ( +- 1.74% ) [56.56%]
3,794,846 branch-misses # 1.39% of all branches ( +- 6.59% ) [58.50%]
449,982,778 L1-dcache-loads # 264.125 M/sec ( +- 2.47% ) [49.88%]
22,404,961 L1-dcache-load-misses # 4.98% of all L1-dcache hits ( +- 6.08% ) [55.05%]
6,204,750 LLC-loads # 3.642 M/sec ( +- 8.91% ) [43.75%]
1,837,411 LLC-load-misses # 1.078 M/sec ( +- 7.27% ) [12.07%]
411,440,421 L1-icache-loads # 241.502 M/sec ( +- 5.60% ) [36.52%]
27,556,832 L1-icache-load-misses # 16.175 M/sec ( +- 7.46% ) [46.72%]
464,067,627 dTLB-loads # 272.392 M/sec ( +- 4.46% ) [54.17%]
10,765,648 dTLB-load-misses # 6.319 M/sec ( +- 3.18% ) [48.68%]
1,273,080,386 iTLB-loads # 747.256 M/sec ( +- 3.38% ) [47.53%]
117,481 iTLB-load-misses # 0.069 M/sec ( +- 14.99% ) [47.01%]
4,590,653 L1-dcache-prefetches # 2.695 M/sec ( +- 4.49% ) [46.19%]
1,712,660 L1-dcache-prefetch-misses # 1.005 M/sec ( +- 3.75% ) [44.82%]
0.195622057 seconds time elapsed ( +- 6.84% )
Also clean up the attribute construction code to be appending, and factor
it out into add_default_attributes().
Tweak the coverage percentage printout a bit, so that it's easier to view it
alongside the +- sttddev colum.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-to3kgu04449s64062val8b62@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-19 19:30:56 +08:00
|
|
|
}
|
|
|
|
|
2016-01-12 17:35:29 +08:00
|
|
|
static const char * const stat_record_usage[] = {
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
"perf stat record [<options>]",
|
|
|
|
NULL,
|
|
|
|
};
|
|
|
|
|
2015-11-05 22:40:47 +08:00
|
|
|
static void init_features(struct perf_session *session)
|
|
|
|
{
|
|
|
|
int feat;
|
|
|
|
|
|
|
|
for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)
|
|
|
|
perf_header__set_feat(&session->header, feat);
|
|
|
|
|
|
|
|
perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
|
|
|
|
perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
|
|
|
|
perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
|
|
|
|
perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
|
|
|
|
}
|
|
|
|
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
static int __cmd_record(int argc, const char **argv)
|
|
|
|
{
|
|
|
|
struct perf_session *session;
|
|
|
|
struct perf_data_file *file = &perf_stat.file;
|
|
|
|
|
2016-01-12 17:35:29 +08:00
|
|
|
argc = parse_options(argc, argv, stat_options, stat_record_usage,
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
PARSE_OPT_STOP_AT_NON_OPTION);
|
|
|
|
|
|
|
|
if (output_name)
|
|
|
|
file->path = output_name;
|
|
|
|
|
2015-11-05 22:40:53 +08:00
|
|
|
if (run_count != 1 || forever) {
|
|
|
|
pr_err("Cannot use -r option with perf stat record.\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
session = perf_session__new(file, false, NULL);
|
|
|
|
if (session == NULL) {
|
|
|
|
pr_err("Perf session creation failed.\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2015-11-05 22:40:47 +08:00
|
|
|
init_features(session);
|
|
|
|
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
session->evlist = evsel_list;
|
|
|
|
perf_stat.session = session;
|
|
|
|
perf_stat.record = true;
|
|
|
|
return argc;
|
|
|
|
}
|
|
|
|
|
perf stat report: Process stat and stat round events
Adding processing of stat and stat round events.
The stat data com in stat events, using generic function
process_stat_round_event to store data under perf_evsel object.
The stat-round events comes each interval or as last event in non
interval mode. The function process_stat_round_event process stored data
for each perf_evsel object and print it out.
Committer note:
After this patch:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.498381 task-clock (msec) # 0.571 CPUs utilized
2 context-switches # 0.004 M/sec
0 cpu-migrations # 0.000 K/sec
149 page-faults # 0.299 M/sec
1,271,635 cycles # 2.552 GHz
928,712 stalled-cycles-frontend # 73.03% frontend cycles idle
663,286 stalled-cycles-backend # 52.16% backend cycles idle
792,614 instructions # 0.62 insns per cycle
# 1.17 stalled cycles per insn
136,850 branches # 274.589 M/sec
<not counted> branch-misses (0.00%)
0.000873419 seconds time elapsed
$
$ perf stat report
Performance counter stats for '/home/acme/bin/perf stat record usleep 1':
0.498381 task-clock (msec) # 0.571 CPUs utilized
2 context-switches # 0.004 M/sec
0 cpu-migrations # 0.000 K/sec
149 page-faults # 0.299 M/sec
1,271,635 cycles # 2.552 GHz
928,712 stalled-cycles-frontend # 73.03% frontend cycles idle
663,286 stalled-cycles-backend # 52.16% backend cycles idle
792,614 instructions # 0.62 insns per cycle
# 1.17 stalled cycles per insn
136,850 branches # 274.589 M/sec
<not counted> branch-misses (0.00%)
0.000873419 seconds time elapsed
$
Reported-by: Kan Liang <kan.liang@intel.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-16-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:59 +08:00
|
|
|
static int process_stat_round_event(struct perf_tool *tool __maybe_unused,
|
|
|
|
union perf_event *event,
|
|
|
|
struct perf_session *session)
|
|
|
|
{
|
2016-05-06 07:04:03 +08:00
|
|
|
struct stat_round_event *stat_round = &event->stat_round;
|
perf stat report: Process stat and stat round events
Adding processing of stat and stat round events.
The stat data com in stat events, using generic function
process_stat_round_event to store data under perf_evsel object.
The stat-round events comes each interval or as last event in non
interval mode. The function process_stat_round_event process stored data
for each perf_evsel object and print it out.
Committer note:
After this patch:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.498381 task-clock (msec) # 0.571 CPUs utilized
2 context-switches # 0.004 M/sec
0 cpu-migrations # 0.000 K/sec
149 page-faults # 0.299 M/sec
1,271,635 cycles # 2.552 GHz
928,712 stalled-cycles-frontend # 73.03% frontend cycles idle
663,286 stalled-cycles-backend # 52.16% backend cycles idle
792,614 instructions # 0.62 insns per cycle
# 1.17 stalled cycles per insn
136,850 branches # 274.589 M/sec
<not counted> branch-misses (0.00%)
0.000873419 seconds time elapsed
$
$ perf stat report
Performance counter stats for '/home/acme/bin/perf stat record usleep 1':
0.498381 task-clock (msec) # 0.571 CPUs utilized
2 context-switches # 0.004 M/sec
0 cpu-migrations # 0.000 K/sec
149 page-faults # 0.299 M/sec
1,271,635 cycles # 2.552 GHz
928,712 stalled-cycles-frontend # 73.03% frontend cycles idle
663,286 stalled-cycles-backend # 52.16% backend cycles idle
792,614 instructions # 0.62 insns per cycle
# 1.17 stalled cycles per insn
136,850 branches # 274.589 M/sec
<not counted> branch-misses (0.00%)
0.000873419 seconds time elapsed
$
Reported-by: Kan Liang <kan.liang@intel.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-16-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:59 +08:00
|
|
|
struct perf_evsel *counter;
|
|
|
|
struct timespec tsh, *ts = NULL;
|
|
|
|
const char **argv = session->header.env.cmdline_argv;
|
|
|
|
int argc = session->header.env.nr_cmdline;
|
|
|
|
|
2016-06-23 22:26:15 +08:00
|
|
|
evlist__for_each_entry(evsel_list, counter)
|
perf stat report: Process stat and stat round events
Adding processing of stat and stat round events.
The stat data com in stat events, using generic function
process_stat_round_event to store data under perf_evsel object.
The stat-round events comes each interval or as last event in non
interval mode. The function process_stat_round_event process stored data
for each perf_evsel object and print it out.
Committer note:
After this patch:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.498381 task-clock (msec) # 0.571 CPUs utilized
2 context-switches # 0.004 M/sec
0 cpu-migrations # 0.000 K/sec
149 page-faults # 0.299 M/sec
1,271,635 cycles # 2.552 GHz
928,712 stalled-cycles-frontend # 73.03% frontend cycles idle
663,286 stalled-cycles-backend # 52.16% backend cycles idle
792,614 instructions # 0.62 insns per cycle
# 1.17 stalled cycles per insn
136,850 branches # 274.589 M/sec
<not counted> branch-misses (0.00%)
0.000873419 seconds time elapsed
$
$ perf stat report
Performance counter stats for '/home/acme/bin/perf stat record usleep 1':
0.498381 task-clock (msec) # 0.571 CPUs utilized
2 context-switches # 0.004 M/sec
0 cpu-migrations # 0.000 K/sec
149 page-faults # 0.299 M/sec
1,271,635 cycles # 2.552 GHz
928,712 stalled-cycles-frontend # 73.03% frontend cycles idle
663,286 stalled-cycles-backend # 52.16% backend cycles idle
792,614 instructions # 0.62 insns per cycle
# 1.17 stalled cycles per insn
136,850 branches # 274.589 M/sec
<not counted> branch-misses (0.00%)
0.000873419 seconds time elapsed
$
Reported-by: Kan Liang <kan.liang@intel.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-16-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:59 +08:00
|
|
|
perf_stat_process_counter(&stat_config, counter);
|
|
|
|
|
2016-05-06 07:04:03 +08:00
|
|
|
if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL)
|
|
|
|
update_stats(&walltime_nsecs_stats, stat_round->time);
|
perf stat report: Process stat and stat round events
Adding processing of stat and stat round events.
The stat data com in stat events, using generic function
process_stat_round_event to store data under perf_evsel object.
The stat-round events comes each interval or as last event in non
interval mode. The function process_stat_round_event process stored data
for each perf_evsel object and print it out.
Committer note:
After this patch:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.498381 task-clock (msec) # 0.571 CPUs utilized
2 context-switches # 0.004 M/sec
0 cpu-migrations # 0.000 K/sec
149 page-faults # 0.299 M/sec
1,271,635 cycles # 2.552 GHz
928,712 stalled-cycles-frontend # 73.03% frontend cycles idle
663,286 stalled-cycles-backend # 52.16% backend cycles idle
792,614 instructions # 0.62 insns per cycle
# 1.17 stalled cycles per insn
136,850 branches # 274.589 M/sec
<not counted> branch-misses (0.00%)
0.000873419 seconds time elapsed
$
$ perf stat report
Performance counter stats for '/home/acme/bin/perf stat record usleep 1':
0.498381 task-clock (msec) # 0.571 CPUs utilized
2 context-switches # 0.004 M/sec
0 cpu-migrations # 0.000 K/sec
149 page-faults # 0.299 M/sec
1,271,635 cycles # 2.552 GHz
928,712 stalled-cycles-frontend # 73.03% frontend cycles idle
663,286 stalled-cycles-backend # 52.16% backend cycles idle
792,614 instructions # 0.62 insns per cycle
# 1.17 stalled cycles per insn
136,850 branches # 274.589 M/sec
<not counted> branch-misses (0.00%)
0.000873419 seconds time elapsed
$
Reported-by: Kan Liang <kan.liang@intel.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-16-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:59 +08:00
|
|
|
|
2016-05-06 07:04:03 +08:00
|
|
|
if (stat_config.interval && stat_round->time) {
|
2016-08-06 02:40:30 +08:00
|
|
|
tsh.tv_sec = stat_round->time / NSEC_PER_SEC;
|
|
|
|
tsh.tv_nsec = stat_round->time % NSEC_PER_SEC;
|
perf stat report: Process stat and stat round events
Adding processing of stat and stat round events.
The stat data com in stat events, using generic function
process_stat_round_event to store data under perf_evsel object.
The stat-round events comes each interval or as last event in non
interval mode. The function process_stat_round_event process stored data
for each perf_evsel object and print it out.
Committer note:
After this patch:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.498381 task-clock (msec) # 0.571 CPUs utilized
2 context-switches # 0.004 M/sec
0 cpu-migrations # 0.000 K/sec
149 page-faults # 0.299 M/sec
1,271,635 cycles # 2.552 GHz
928,712 stalled-cycles-frontend # 73.03% frontend cycles idle
663,286 stalled-cycles-backend # 52.16% backend cycles idle
792,614 instructions # 0.62 insns per cycle
# 1.17 stalled cycles per insn
136,850 branches # 274.589 M/sec
<not counted> branch-misses (0.00%)
0.000873419 seconds time elapsed
$
$ perf stat report
Performance counter stats for '/home/acme/bin/perf stat record usleep 1':
0.498381 task-clock (msec) # 0.571 CPUs utilized
2 context-switches # 0.004 M/sec
0 cpu-migrations # 0.000 K/sec
149 page-faults # 0.299 M/sec
1,271,635 cycles # 2.552 GHz
928,712 stalled-cycles-frontend # 73.03% frontend cycles idle
663,286 stalled-cycles-backend # 52.16% backend cycles idle
792,614 instructions # 0.62 insns per cycle
# 1.17 stalled cycles per insn
136,850 branches # 274.589 M/sec
<not counted> branch-misses (0.00%)
0.000873419 seconds time elapsed
$
Reported-by: Kan Liang <kan.liang@intel.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-16-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:59 +08:00
|
|
|
ts = &tsh;
|
|
|
|
}
|
|
|
|
|
|
|
|
print_counters(ts, argc, argv);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2015-11-05 22:40:57 +08:00
|
|
|
static
|
2016-12-12 21:52:10 +08:00
|
|
|
int process_stat_config_event(struct perf_tool *tool,
|
2015-11-05 22:40:57 +08:00
|
|
|
union perf_event *event,
|
|
|
|
struct perf_session *session __maybe_unused)
|
|
|
|
{
|
2015-11-05 22:40:58 +08:00
|
|
|
struct perf_stat *st = container_of(tool, struct perf_stat, tool);
|
|
|
|
|
2015-11-05 22:40:57 +08:00
|
|
|
perf_event__read_stat_config(&stat_config, &event->stat_config);
|
2015-11-05 22:40:58 +08:00
|
|
|
|
2015-11-05 22:41:02 +08:00
|
|
|
if (cpu_map__empty(st->cpus)) {
|
|
|
|
if (st->aggr_mode != AGGR_UNSET)
|
|
|
|
pr_warning("warning: processing task data, aggregation mode not set\n");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (st->aggr_mode != AGGR_UNSET)
|
|
|
|
stat_config.aggr_mode = st->aggr_mode;
|
|
|
|
|
2015-11-05 22:40:58 +08:00
|
|
|
if (perf_stat.file.is_pipe)
|
|
|
|
perf_stat_init_aggr_mode();
|
|
|
|
else
|
|
|
|
perf_stat_init_aggr_mode_file(st);
|
|
|
|
|
2015-11-05 22:40:57 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2015-11-05 22:40:56 +08:00
|
|
|
static int set_maps(struct perf_stat *st)
|
|
|
|
{
|
|
|
|
if (!st->cpus || !st->threads)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
if (WARN_ONCE(st->maps_allocated, "stats double allocation\n"))
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
perf_evlist__set_maps(evsel_list, st->cpus, st->threads);
|
|
|
|
|
|
|
|
if (perf_evlist__alloc_stats(evsel_list, true))
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
st->maps_allocated = true;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static
|
2016-12-12 21:52:10 +08:00
|
|
|
int process_thread_map_event(struct perf_tool *tool,
|
2015-11-05 22:40:56 +08:00
|
|
|
union perf_event *event,
|
|
|
|
struct perf_session *session __maybe_unused)
|
|
|
|
{
|
|
|
|
struct perf_stat *st = container_of(tool, struct perf_stat, tool);
|
|
|
|
|
|
|
|
if (st->threads) {
|
|
|
|
pr_warning("Extra thread map event, ignoring.\n");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
st->threads = thread_map__new_event(&event->thread_map);
|
|
|
|
if (!st->threads)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
return set_maps(st);
|
|
|
|
}
|
|
|
|
|
|
|
|
static
|
2016-12-12 21:52:10 +08:00
|
|
|
int process_cpu_map_event(struct perf_tool *tool,
|
2015-11-05 22:40:56 +08:00
|
|
|
union perf_event *event,
|
|
|
|
struct perf_session *session __maybe_unused)
|
|
|
|
{
|
|
|
|
struct perf_stat *st = container_of(tool, struct perf_stat, tool);
|
|
|
|
struct cpu_map *cpus;
|
|
|
|
|
|
|
|
if (st->cpus) {
|
|
|
|
pr_warning("Extra cpu map event, ignoring.\n");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
cpus = cpu_map__new_data(&event->cpu_map.data);
|
|
|
|
if (!cpus)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
st->cpus = cpus;
|
|
|
|
return set_maps(st);
|
|
|
|
}
|
|
|
|
|
2016-01-12 17:35:29 +08:00
|
|
|
static const char * const stat_report_usage[] = {
|
2015-11-05 22:40:55 +08:00
|
|
|
"perf stat report [<options>]",
|
|
|
|
NULL,
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct perf_stat perf_stat = {
|
|
|
|
.tool = {
|
|
|
|
.attr = perf_event__process_attr,
|
2015-11-05 22:41:00 +08:00
|
|
|
.event_update = perf_event__process_event_update,
|
2015-11-05 22:40:56 +08:00
|
|
|
.thread_map = process_thread_map_event,
|
|
|
|
.cpu_map = process_cpu_map_event,
|
2015-11-05 22:40:57 +08:00
|
|
|
.stat_config = process_stat_config_event,
|
perf stat report: Process stat and stat round events
Adding processing of stat and stat round events.
The stat data com in stat events, using generic function
process_stat_round_event to store data under perf_evsel object.
The stat-round events comes each interval or as last event in non
interval mode. The function process_stat_round_event process stored data
for each perf_evsel object and print it out.
Committer note:
After this patch:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.498381 task-clock (msec) # 0.571 CPUs utilized
2 context-switches # 0.004 M/sec
0 cpu-migrations # 0.000 K/sec
149 page-faults # 0.299 M/sec
1,271,635 cycles # 2.552 GHz
928,712 stalled-cycles-frontend # 73.03% frontend cycles idle
663,286 stalled-cycles-backend # 52.16% backend cycles idle
792,614 instructions # 0.62 insns per cycle
# 1.17 stalled cycles per insn
136,850 branches # 274.589 M/sec
<not counted> branch-misses (0.00%)
0.000873419 seconds time elapsed
$
$ perf stat report
Performance counter stats for '/home/acme/bin/perf stat record usleep 1':
0.498381 task-clock (msec) # 0.571 CPUs utilized
2 context-switches # 0.004 M/sec
0 cpu-migrations # 0.000 K/sec
149 page-faults # 0.299 M/sec
1,271,635 cycles # 2.552 GHz
928,712 stalled-cycles-frontend # 73.03% frontend cycles idle
663,286 stalled-cycles-backend # 52.16% backend cycles idle
792,614 instructions # 0.62 insns per cycle
# 1.17 stalled cycles per insn
136,850 branches # 274.589 M/sec
<not counted> branch-misses (0.00%)
0.000873419 seconds time elapsed
$
Reported-by: Kan Liang <kan.liang@intel.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-16-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:59 +08:00
|
|
|
.stat = perf_event__process_stat_event,
|
|
|
|
.stat_round = process_stat_round_event,
|
2015-11-05 22:40:55 +08:00
|
|
|
},
|
2015-11-05 22:41:02 +08:00
|
|
|
.aggr_mode = AGGR_UNSET,
|
2015-11-05 22:40:55 +08:00
|
|
|
};
|
|
|
|
|
|
|
|
static int __cmd_report(int argc, const char **argv)
|
|
|
|
{
|
|
|
|
struct perf_session *session;
|
|
|
|
const struct option options[] = {
|
|
|
|
OPT_STRING('i', "input", &input_name, "file", "input file name"),
|
2015-11-05 22:41:02 +08:00
|
|
|
OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode,
|
|
|
|
"aggregate counts per processor socket", AGGR_SOCKET),
|
|
|
|
OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode,
|
|
|
|
"aggregate counts per physical processor core", AGGR_CORE),
|
|
|
|
OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode,
|
|
|
|
"disable CPU count aggregation", AGGR_NONE),
|
2015-11-05 22:40:55 +08:00
|
|
|
OPT_END()
|
|
|
|
};
|
|
|
|
struct stat st;
|
|
|
|
int ret;
|
|
|
|
|
2016-01-12 17:35:29 +08:00
|
|
|
argc = parse_options(argc, argv, options, stat_report_usage, 0);
|
2015-11-05 22:40:55 +08:00
|
|
|
|
|
|
|
if (!input_name || !strlen(input_name)) {
|
|
|
|
if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
|
|
|
|
input_name = "-";
|
|
|
|
else
|
|
|
|
input_name = "perf.data";
|
|
|
|
}
|
|
|
|
|
|
|
|
perf_stat.file.path = input_name;
|
|
|
|
perf_stat.file.mode = PERF_DATA_MODE_READ;
|
|
|
|
|
|
|
|
session = perf_session__new(&perf_stat.file, false, &perf_stat.tool);
|
|
|
|
if (session == NULL)
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
perf_stat.session = session;
|
|
|
|
stat_config.output = stderr;
|
|
|
|
evsel_list = session->evlist;
|
|
|
|
|
|
|
|
ret = perf_session__process_events(session);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
perf_session__delete(session);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-09-11 06:15:03 +08:00
|
|
|
int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
|
2009-05-26 15:17:18 +08:00
|
|
|
{
|
2012-10-02 02:20:58 +08:00
|
|
|
const char * const stat_usage[] = {
|
|
|
|
"perf stat [<options>] [<command>]",
|
|
|
|
NULL
|
|
|
|
};
|
2013-11-01 15:33:15 +08:00
|
|
|
int status = -EINVAL, run_idx;
|
2011-08-16 04:22:33 +08:00
|
|
|
const char *mode;
|
2015-07-21 20:31:24 +08:00
|
|
|
FILE *output = stderr;
|
2015-07-21 20:31:25 +08:00
|
|
|
unsigned int interval;
|
2015-11-05 22:40:55 +08:00
|
|
|
const char * const stat_subcommands[] = { "record", "report" };
|
2009-06-13 20:57:28 +08:00
|
|
|
|
perf stat: add perf stat -B to pretty print large numbers
It is hard to read very large numbers so provide an option to perf stat
to separate thousands using a separator. The patch leverages the locale
support of stdio. You need to set your LC_NUMERIC appropriately, for
instance LC_NUMERIC=en_US.UTF8. You need to pass -B to activate this
feature. This way existing scripts parsing the output do not need to be
changed. Here is an example.
$ perf stat noploop 2
noploop for 2 seconds
Performance counter stats for 'noploop 2':
1998.347031 task-clock-msecs # 0.998 CPUs
61 context-switches # 0.000 M/sec
0 CPU-migrations # 0.000 M/sec
118 page-faults # 0.000 M/sec
4,138,410,900 cycles # 2070.917 M/sec (scaled from 70.01%)
2,062,650,268 instructions # 0.498 IPC (scaled from 70.01%)
2,057,653,466 branches # 1029.678 M/sec (scaled from 70.01%)
40,267 branch-misses # 0.002 % (scaled from 30.04%)
2,055,961,348 cache-references # 1028.831 M/sec (scaled from 30.03%)
53,725 cache-misses # 0.027 M/sec (scaled from 30.02%)
2.001393933 seconds time elapsed
$ perf stat -B noploop 2
noploop for 2 seconds
Performance counter stats for 'noploop 2':
1998.297883 task-clock-msecs # 0.998 CPUs
59 context-switches # 0.000 M/sec
0 CPU-migrations # 0.000 M/sec
119 page-faults # 0.000 M/sec
4,131,380,160 cycles # 2067.450 M/sec (scaled from 70.01%)
2,059,096,507 instructions # 0.498 IPC (scaled from 70.01%)
2,054,681,303 branches # 1028.216 M/sec (scaled from 70.01%)
25,650 branch-misses # 0.001 % (scaled from 30.05%)
2,056,283,014 cache-references # 1029.017 M/sec (scaled from 30.03%)
47,097 cache-misses # 0.024 M/sec (scaled from 30.02%)
2.001391016 seconds time elapsed
Cc: David S. Miller <davem@davemloft.net>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <4bf28fe8.914ed80a.01ca.fffff5f5@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-05-18 21:00:01 +08:00
|
|
|
setlocale(LC_ALL, "");
|
|
|
|
|
2013-03-11 15:43:12 +08:00
|
|
|
evsel_list = perf_evlist__new();
|
2011-01-12 06:56:53 +08:00
|
|
|
if (evsel_list == NULL)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
perf stat: Bail out on unsupported event config modifiers
'perf stat' accepts some config terms but doesn't apply them. For
example:
# perf stat -e 'instructions/no-inherit/' -e 'instructions/inherit/' bash
# ls
# exit
Performance counter stats for 'bash':
266258061 instructions/no-inherit/
266258061 instructions/inherit/
1.402183915 seconds time elapsed
The result is confusing, because user may expect the first
'instructions' event exclude the 'ls' command.
This patch forbid most of these config terms for 'perf stat'.
Result:
# ./perf stat -e 'instructions/no-inherit/' -e 'instructions/inherit/' bash
event syntax error: 'instructions/no-inherit/'
\___ 'no-inherit' is not usable in 'perf stat'
...
We can add blocked config terms back when 'perf stat' really supports them.
This patch also removes unavailable config term from error message:
# ./perf stat -e 'instructions/badterm/' ls
event syntax error: 'instructions/badterm/'
\___ unknown term
valid terms: config,config1,config2,name
# ./perf stat -e 'cpu/badterm/' ls
event syntax error: 'cpu/badterm/'
\___ unknown term
valid terms: pc,any,inv,edge,cmask,event,in_tx,ldlat,umask,in_tx_cp,offcore_rsp,config,config1,config2,name
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Cody P Schafer <dev@codyps.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jeremie Galarneau <jeremie.galarneau@efficios.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kirill Smelkov <kirr@nexedi.com>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1455882283-79592-11-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-19 19:43:58 +08:00
|
|
|
parse_events__shrink_config_terms();
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands,
|
|
|
|
(const char **) stat_usage,
|
|
|
|
PARSE_OPT_STOP_AT_NON_OPTION);
|
2016-03-02 02:57:52 +08:00
|
|
|
perf_stat__init_shadow_stats();
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
|
2015-11-05 22:41:01 +08:00
|
|
|
if (csv_sep) {
|
|
|
|
csv_output = true;
|
|
|
|
if (!strcmp(csv_sep, "\\t"))
|
|
|
|
csv_sep = "\t";
|
|
|
|
} else
|
|
|
|
csv_sep = DEFAULT_SEPARATOR;
|
|
|
|
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
if (argc && !strncmp(argv[0], "rec", 3)) {
|
|
|
|
argc = __cmd_record(argc, argv);
|
|
|
|
if (argc < 0)
|
|
|
|
return -1;
|
2015-11-05 22:40:55 +08:00
|
|
|
} else if (argc && !strncmp(argv[0], "rep", 3))
|
|
|
|
return __cmd_report(argc, argv);
|
perf stat: Add csv-style output
This patch adds an option (-x/--field-separator) to print counts using a
CSV-style output. The user can pass a custom separator. This makes it very easy
to import counts directly into your favorite spreadsheet without having to
write scripts.
Example:
$ perf stat --field-separator=, -a -- sleep 1
4009.961740,task-clock-msecs
13,context-switches
2,CPU-migrations
189,page-faults
9596385684,cycles
3493659441,instructions
872897069,branches
41562,branch-misses
22424,cache-references
1289,cache-misses
Works also in non-aggregated mode:
$ perf stat -x , -a -A -- sleep 1
CPU0,1002.526168,task-clock-msecs
CPU1,1002.528365,task-clock-msecs
CPU2,1002.523360,task-clock-msecs
CPU3,1002.519878,task-clock-msecs
CPU0,1,context-switches
CPU1,5,context-switches
CPU2,5,context-switches
CPU3,6,context-switches
CPU0,0,CPU-migrations
CPU1,1,CPU-migrations
CPU2,0,CPU-migrations
CPU3,1,CPU-migrations
CPU0,2,page-faults
CPU1,6,page-faults
CPU2,9,page-faults
CPU3,174,page-faults
CPU0,2399439771,cycles
CPU1,2380369063,cycles
CPU2,2399142710,cycles
CPU3,2373161192,cycles
CPU0,872900618,instructions
CPU1,873030960,instructions
CPU2,872714525,instructions
CPU3,874460580,instructions
CPU0,221556839,branches
CPU1,218134342,branches
CPU2,218161730,branches
CPU3,218284093,branches
CPU0,18556,branch-misses
CPU1,1449,branch-misses
CPU2,3447,branch-misses
CPU3,12714,branch-misses
CPU0,8330,cache-references
CPU1,313844,cache-references
CPU2,47993728,cache-references
CPU3,826481,cache-references
CPU0,272,cache-misses
CPU1,5360,cache-misses
CPU2,1342193,cache-misses
CPU3,13992,cache-misses
This second version adds the ability to name a separator and uses
field-separator as the long option to be consistent with perf report.
Commiter note: Since we enabled --big-num by default in 201e0b0 and -x can't be
used with it, we need to notice if the user explicitely enabled or disabled -B,
add code to disable big_num if the user didn't explicitely set --big_num when
-x is used.
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederik Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: paulus@samba.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
LKML-Reference: <4cf68aa7.0fedd80a.5294.1203@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-02 00:49:05 +08:00
|
|
|
|
2015-07-21 20:31:25 +08:00
|
|
|
interval = stat_config.interval;
|
|
|
|
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
/*
|
|
|
|
* For record command the -o is already taken care of.
|
|
|
|
*/
|
|
|
|
if (!STAT_RECORD && output_name && strcmp(output_name, "-"))
|
2011-08-16 04:22:33 +08:00
|
|
|
output = NULL;
|
|
|
|
|
2011-09-08 07:14:00 +08:00
|
|
|
if (output_name && output_fd) {
|
|
|
|
fprintf(stderr, "cannot use both --output and --log-fd\n");
|
2015-11-05 22:40:45 +08:00
|
|
|
parse_options_usage(stat_usage, stat_options, "o", 1);
|
|
|
|
parse_options_usage(NULL, stat_options, "log-fd", 0);
|
2013-11-01 15:33:15 +08:00
|
|
|
goto out;
|
2011-09-08 07:14:00 +08:00
|
|
|
}
|
2012-05-15 19:11:11 +08:00
|
|
|
|
2016-03-04 07:57:36 +08:00
|
|
|
if (metric_only && stat_config.aggr_mode == AGGR_THREAD) {
|
|
|
|
fprintf(stderr, "--metric-only is not supported with --per-thread\n");
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (metric_only && run_count > 1) {
|
|
|
|
fprintf(stderr, "--metric-only is not supported with -r\n");
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
2012-05-15 19:11:11 +08:00
|
|
|
if (output_fd < 0) {
|
|
|
|
fprintf(stderr, "argument to --log-fd must be a > 0\n");
|
2015-11-05 22:40:45 +08:00
|
|
|
parse_options_usage(stat_usage, stat_options, "log-fd", 0);
|
2013-11-01 15:33:15 +08:00
|
|
|
goto out;
|
2012-05-15 19:11:11 +08:00
|
|
|
}
|
|
|
|
|
2011-08-16 04:22:33 +08:00
|
|
|
if (!output) {
|
|
|
|
struct timespec tm;
|
|
|
|
mode = append_file ? "a" : "w";
|
|
|
|
|
|
|
|
output = fopen(output_name, mode);
|
|
|
|
if (!output) {
|
|
|
|
perror("failed to create output file");
|
2012-08-27 02:24:44 +08:00
|
|
|
return -1;
|
2011-08-16 04:22:33 +08:00
|
|
|
}
|
|
|
|
clock_gettime(CLOCK_REALTIME, &tm);
|
|
|
|
fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
|
2012-05-15 19:11:11 +08:00
|
|
|
} else if (output_fd > 0) {
|
2011-09-08 07:14:00 +08:00
|
|
|
mode = append_file ? "a" : "w";
|
|
|
|
output = fdopen(output_fd, mode);
|
|
|
|
if (!output) {
|
|
|
|
perror("Failed opening logfd");
|
|
|
|
return -errno;
|
|
|
|
}
|
2011-08-16 04:22:33 +08:00
|
|
|
}
|
|
|
|
|
2015-07-21 20:31:24 +08:00
|
|
|
stat_config.output = output;
|
|
|
|
|
perf stat: Add csv-style output
This patch adds an option (-x/--field-separator) to print counts using a
CSV-style output. The user can pass a custom separator. This makes it very easy
to import counts directly into your favorite spreadsheet without having to
write scripts.
Example:
$ perf stat --field-separator=, -a -- sleep 1
4009.961740,task-clock-msecs
13,context-switches
2,CPU-migrations
189,page-faults
9596385684,cycles
3493659441,instructions
872897069,branches
41562,branch-misses
22424,cache-references
1289,cache-misses
Works also in non-aggregated mode:
$ perf stat -x , -a -A -- sleep 1
CPU0,1002.526168,task-clock-msecs
CPU1,1002.528365,task-clock-msecs
CPU2,1002.523360,task-clock-msecs
CPU3,1002.519878,task-clock-msecs
CPU0,1,context-switches
CPU1,5,context-switches
CPU2,5,context-switches
CPU3,6,context-switches
CPU0,0,CPU-migrations
CPU1,1,CPU-migrations
CPU2,0,CPU-migrations
CPU3,1,CPU-migrations
CPU0,2,page-faults
CPU1,6,page-faults
CPU2,9,page-faults
CPU3,174,page-faults
CPU0,2399439771,cycles
CPU1,2380369063,cycles
CPU2,2399142710,cycles
CPU3,2373161192,cycles
CPU0,872900618,instructions
CPU1,873030960,instructions
CPU2,872714525,instructions
CPU3,874460580,instructions
CPU0,221556839,branches
CPU1,218134342,branches
CPU2,218161730,branches
CPU3,218284093,branches
CPU0,18556,branch-misses
CPU1,1449,branch-misses
CPU2,3447,branch-misses
CPU3,12714,branch-misses
CPU0,8330,cache-references
CPU1,313844,cache-references
CPU2,47993728,cache-references
CPU3,826481,cache-references
CPU0,272,cache-misses
CPU1,5360,cache-misses
CPU2,1342193,cache-misses
CPU3,13992,cache-misses
This second version adds the ability to name a separator and uses
field-separator as the long option to be consistent with perf report.
Commiter note: Since we enabled --big-num by default in 201e0b0 and -x can't be
used with it, we need to notice if the user explicitely enabled or disabled -B,
add code to disable big_num if the user didn't explicitely set --big_num when
-x is used.
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederik Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: paulus@samba.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
LKML-Reference: <4cf68aa7.0fedd80a.5294.1203@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-02 00:49:05 +08:00
|
|
|
/*
|
|
|
|
* let the spreadsheet do the pretty-printing
|
|
|
|
*/
|
|
|
|
if (csv_output) {
|
2011-09-08 07:14:04 +08:00
|
|
|
/* User explicitly passed -B? */
|
perf stat: Add csv-style output
This patch adds an option (-x/--field-separator) to print counts using a
CSV-style output. The user can pass a custom separator. This makes it very easy
to import counts directly into your favorite spreadsheet without having to
write scripts.
Example:
$ perf stat --field-separator=, -a -- sleep 1
4009.961740,task-clock-msecs
13,context-switches
2,CPU-migrations
189,page-faults
9596385684,cycles
3493659441,instructions
872897069,branches
41562,branch-misses
22424,cache-references
1289,cache-misses
Works also in non-aggregated mode:
$ perf stat -x , -a -A -- sleep 1
CPU0,1002.526168,task-clock-msecs
CPU1,1002.528365,task-clock-msecs
CPU2,1002.523360,task-clock-msecs
CPU3,1002.519878,task-clock-msecs
CPU0,1,context-switches
CPU1,5,context-switches
CPU2,5,context-switches
CPU3,6,context-switches
CPU0,0,CPU-migrations
CPU1,1,CPU-migrations
CPU2,0,CPU-migrations
CPU3,1,CPU-migrations
CPU0,2,page-faults
CPU1,6,page-faults
CPU2,9,page-faults
CPU3,174,page-faults
CPU0,2399439771,cycles
CPU1,2380369063,cycles
CPU2,2399142710,cycles
CPU3,2373161192,cycles
CPU0,872900618,instructions
CPU1,873030960,instructions
CPU2,872714525,instructions
CPU3,874460580,instructions
CPU0,221556839,branches
CPU1,218134342,branches
CPU2,218161730,branches
CPU3,218284093,branches
CPU0,18556,branch-misses
CPU1,1449,branch-misses
CPU2,3447,branch-misses
CPU3,12714,branch-misses
CPU0,8330,cache-references
CPU1,313844,cache-references
CPU2,47993728,cache-references
CPU3,826481,cache-references
CPU0,272,cache-misses
CPU1,5360,cache-misses
CPU2,1342193,cache-misses
CPU3,13992,cache-misses
This second version adds the ability to name a separator and uses
field-separator as the long option to be consistent with perf report.
Commiter note: Since we enabled --big-num by default in 201e0b0 and -x can't be
used with it, we need to notice if the user explicitely enabled or disabled -B,
add code to disable big_num if the user didn't explicitely set --big_num when
-x is used.
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederik Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: paulus@samba.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
LKML-Reference: <4cf68aa7.0fedd80a.5294.1203@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-02 00:49:05 +08:00
|
|
|
if (big_num_opt == 1) {
|
|
|
|
fprintf(stderr, "-B option not supported with -x\n");
|
2015-11-05 22:40:45 +08:00
|
|
|
parse_options_usage(stat_usage, stat_options, "B", 1);
|
|
|
|
parse_options_usage(NULL, stat_options, "x", 1);
|
2013-11-01 15:33:15 +08:00
|
|
|
goto out;
|
perf stat: Add csv-style output
This patch adds an option (-x/--field-separator) to print counts using a
CSV-style output. The user can pass a custom separator. This makes it very easy
to import counts directly into your favorite spreadsheet without having to
write scripts.
Example:
$ perf stat --field-separator=, -a -- sleep 1
4009.961740,task-clock-msecs
13,context-switches
2,CPU-migrations
189,page-faults
9596385684,cycles
3493659441,instructions
872897069,branches
41562,branch-misses
22424,cache-references
1289,cache-misses
Works also in non-aggregated mode:
$ perf stat -x , -a -A -- sleep 1
CPU0,1002.526168,task-clock-msecs
CPU1,1002.528365,task-clock-msecs
CPU2,1002.523360,task-clock-msecs
CPU3,1002.519878,task-clock-msecs
CPU0,1,context-switches
CPU1,5,context-switches
CPU2,5,context-switches
CPU3,6,context-switches
CPU0,0,CPU-migrations
CPU1,1,CPU-migrations
CPU2,0,CPU-migrations
CPU3,1,CPU-migrations
CPU0,2,page-faults
CPU1,6,page-faults
CPU2,9,page-faults
CPU3,174,page-faults
CPU0,2399439771,cycles
CPU1,2380369063,cycles
CPU2,2399142710,cycles
CPU3,2373161192,cycles
CPU0,872900618,instructions
CPU1,873030960,instructions
CPU2,872714525,instructions
CPU3,874460580,instructions
CPU0,221556839,branches
CPU1,218134342,branches
CPU2,218161730,branches
CPU3,218284093,branches
CPU0,18556,branch-misses
CPU1,1449,branch-misses
CPU2,3447,branch-misses
CPU3,12714,branch-misses
CPU0,8330,cache-references
CPU1,313844,cache-references
CPU2,47993728,cache-references
CPU3,826481,cache-references
CPU0,272,cache-misses
CPU1,5360,cache-misses
CPU2,1342193,cache-misses
CPU3,13992,cache-misses
This second version adds the ability to name a separator and uses
field-separator as the long option to be consistent with perf report.
Commiter note: Since we enabled --big-num by default in 201e0b0 and -x can't be
used with it, we need to notice if the user explicitely enabled or disabled -B,
add code to disable big_num if the user didn't explicitely set --big_num when
-x is used.
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederik Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: paulus@samba.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
LKML-Reference: <4cf68aa7.0fedd80a.5294.1203@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-02 00:49:05 +08:00
|
|
|
} else /* Nope, so disable big number formatting */
|
|
|
|
big_num = false;
|
|
|
|
} else if (big_num_opt == 0) /* User passed --no-big-num */
|
|
|
|
big_num = false;
|
|
|
|
|
2013-11-13 03:46:16 +08:00
|
|
|
if (!argc && target__none(&target))
|
2015-11-05 22:40:45 +08:00
|
|
|
usage_with_options(stat_usage, stat_options);
|
2013-09-30 21:37:37 +08:00
|
|
|
|
2013-03-02 02:02:27 +08:00
|
|
|
if (run_count < 0) {
|
2013-11-01 15:33:15 +08:00
|
|
|
pr_err("Run count must be a positive number\n");
|
2015-11-05 22:40:45 +08:00
|
|
|
parse_options_usage(stat_usage, stat_options, "r", 1);
|
2013-11-01 15:33:15 +08:00
|
|
|
goto out;
|
2013-03-02 02:02:27 +08:00
|
|
|
} else if (run_count == 0) {
|
|
|
|
forever = true;
|
|
|
|
run_count = 1;
|
|
|
|
}
|
2009-04-20 21:37:32 +08:00
|
|
|
|
2015-07-21 20:31:22 +08:00
|
|
|
if ((stat_config.aggr_mode == AGGR_THREAD) && !target__has_task(&target)) {
|
perf stat: Introduce --per-thread option
Currently all the -p option PID arguments tasks values get aggregated
and printed as single values.
Adding --per-tasks option to print values per task.
$ perf stat -e cycles,instructions --per-thread -p 30190,30242
^C
Performance counter stats for process id '30190,30242':
cat-30190 0 cycles
yes-30242 3,842,525,421 cycles
cat-30190 0 instructions
yes-30242 10,370,817,010 instructions
1.143155657 seconds time elapsed
Also works under interval mode:
$ perf stat -e cycles,instructions --per-thread -p 30190,30242 -I 1000
# time comm-pid counts unit events
1.000073435 cat-30190 89,058 cycles
1.000073435 yes-30242 3,360,786,902 cycles (100.00%)
1.000073435 cat-30190 14,066 instructions
1.000073435 yes-30242 9,069,937,462 instructions
2.000204830 cat-30190 0 cycles
2.000204830 yes-30242 3,351,667,626 cycles
2.000204830 cat-30190 0 instructions
2.000204830 yes-30242 9,045,796,885 instructions
^C 2.771286639 cat-30190 0 cycles
2.771286639 yes-30242 2,593,884,166 cycles
2.771286639 cat-30190 0 instructions
2.771286639 yes-30242 7,001,171,191 instructions
It works only with -t and -p options, otherwise following error is
printed:
$ perf stat -e cycles --per-thread -I 1000 ls
The --per-thread option is only available when monitoring via -p -t options.
-p, --pid <pid> stat events on existing process id
-t, --tid <tid> stat events on existing thread id
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-23-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-06-26 17:29:27 +08:00
|
|
|
fprintf(stderr, "The --per-thread option is only available "
|
|
|
|
"when monitoring via -p -t options.\n");
|
2015-11-05 22:40:45 +08:00
|
|
|
parse_options_usage(NULL, stat_options, "p", 1);
|
|
|
|
parse_options_usage(NULL, stat_options, "t", 1);
|
perf stat: Introduce --per-thread option
Currently all the -p option PID arguments tasks values get aggregated
and printed as single values.
Adding --per-tasks option to print values per task.
$ perf stat -e cycles,instructions --per-thread -p 30190,30242
^C
Performance counter stats for process id '30190,30242':
cat-30190 0 cycles
yes-30242 3,842,525,421 cycles
cat-30190 0 instructions
yes-30242 10,370,817,010 instructions
1.143155657 seconds time elapsed
Also works under interval mode:
$ perf stat -e cycles,instructions --per-thread -p 30190,30242 -I 1000
# time comm-pid counts unit events
1.000073435 cat-30190 89,058 cycles
1.000073435 yes-30242 3,360,786,902 cycles (100.00%)
1.000073435 cat-30190 14,066 instructions
1.000073435 yes-30242 9,069,937,462 instructions
2.000204830 cat-30190 0 cycles
2.000204830 yes-30242 3,351,667,626 cycles
2.000204830 cat-30190 0 instructions
2.000204830 yes-30242 9,045,796,885 instructions
^C 2.771286639 cat-30190 0 cycles
2.771286639 yes-30242 2,593,884,166 cycles
2.771286639 cat-30190 0 instructions
2.771286639 yes-30242 7,001,171,191 instructions
It works only with -t and -p options, otherwise following error is
printed:
$ perf stat -e cycles --per-thread -I 1000 ls
The --per-thread option is only available when monitoring via -p -t options.
-p, --pid <pid> stat events on existing process id
-t, --tid <tid> stat events on existing thread id
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-23-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-06-26 17:29:27 +08:00
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* no_aggr, cgroup are for system-wide only
|
|
|
|
* --per-thread is aggregated per thread, we dont mix it with cpu mode
|
|
|
|
*/
|
2015-07-21 20:31:22 +08:00
|
|
|
if (((stat_config.aggr_mode != AGGR_GLOBAL &&
|
|
|
|
stat_config.aggr_mode != AGGR_THREAD) || nr_cgroups) &&
|
2013-11-13 03:46:16 +08:00
|
|
|
!target__has_cpu(&target)) {
|
perf tool: Add cgroup support
This patch adds the ability to filter monitoring based on container groups
(cgroups) for both perf stat and perf record. It is possible to monitor
multiple cgroup in parallel. There is one cgroup per event. The cgroups to
monitor are passed via a new -G option followed by a comma separated list of
cgroup names.
The cgroup filesystem has to be mounted. Given a cgroup name, the perf tool
finds the corresponding directory in the cgroup filesystem and opens it. It
then passes that file descriptor to the kernel.
Example:
$ perf stat -B -a -e cycles:u,cycles:u,cycles:u -G test1,,test2 -- sleep 1
Performance counter stats for 'sleep 1':
2,368,667,414 cycles test1
2,369,661,459 cycles
<not counted> cycles test2
1.001856890 seconds time elapsed
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <4d590290.825bdf0a.7d0a.4890@mx.google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-02-14 17:20:01 +08:00
|
|
|
fprintf(stderr, "both cgroup and no-aggregation "
|
|
|
|
"modes only available in system-wide mode\n");
|
|
|
|
|
2015-11-05 22:40:45 +08:00
|
|
|
parse_options_usage(stat_usage, stat_options, "G", 1);
|
|
|
|
parse_options_usage(NULL, stat_options, "A", 1);
|
|
|
|
parse_options_usage(NULL, stat_options, "a", 1);
|
2013-11-01 15:33:15 +08:00
|
|
|
goto out;
|
2013-02-06 22:46:02 +08:00
|
|
|
}
|
|
|
|
|
perf stat: Add -d -d and -d -d -d options to show more CPU events
Print even more detailed statistics if requested via perf stat -d:
-d: detailed events, L1 and LLC data cache
-d -d: more detailed events, dTLB and iTLB events
-d -d -d: very detailed events, adding prefetch events
Full output looks like this now:
Performance counter stats for '/home/mingo/hackbench 10' (5 runs):
1703.674707 task-clock # 8.709 CPUs utilized ( +- 4.19% )
49,068 context-switches # 0.029 M/sec ( +- 16.66% )
8,303 CPU-migrations # 0.005 M/sec ( +- 24.90% )
17,397 page-faults # 0.010 M/sec ( +- 0.46% )
2,345,389,239 cycles # 1.377 GHz ( +- 4.61% ) [55.90%]
1,884,503,527 stalled-cycles-frontend # 80.35% frontend cycles idle ( +- 5.67% ) [50.39%]
743,919,737 stalled-cycles-backend # 31.72% backend cycles idle ( +- 8.75% ) [49.91%]
1,314,416,379 instructions # 0.56 insns per cycle
# 1.43 stalled cycles per insn ( +- 2.53% ) [60.87%]
272,592,567 branches # 160.003 M/sec ( +- 1.74% ) [56.56%]
3,794,846 branch-misses # 1.39% of all branches ( +- 6.59% ) [58.50%]
449,982,778 L1-dcache-loads # 264.125 M/sec ( +- 2.47% ) [49.88%]
22,404,961 L1-dcache-load-misses # 4.98% of all L1-dcache hits ( +- 6.08% ) [55.05%]
6,204,750 LLC-loads # 3.642 M/sec ( +- 8.91% ) [43.75%]
1,837,411 LLC-load-misses # 1.078 M/sec ( +- 7.27% ) [12.07%]
411,440,421 L1-icache-loads # 241.502 M/sec ( +- 5.60% ) [36.52%]
27,556,832 L1-icache-load-misses # 16.175 M/sec ( +- 7.46% ) [46.72%]
464,067,627 dTLB-loads # 272.392 M/sec ( +- 4.46% ) [54.17%]
10,765,648 dTLB-load-misses # 6.319 M/sec ( +- 3.18% ) [48.68%]
1,273,080,386 iTLB-loads # 747.256 M/sec ( +- 3.38% ) [47.53%]
117,481 iTLB-load-misses # 0.069 M/sec ( +- 14.99% ) [47.01%]
4,590,653 L1-dcache-prefetches # 2.695 M/sec ( +- 4.49% ) [46.19%]
1,712,660 L1-dcache-prefetch-misses # 1.005 M/sec ( +- 3.75% ) [44.82%]
0.195622057 seconds time elapsed ( +- 6.84% )
Also clean up the attribute construction code to be appending, and factor
it out into add_default_attributes().
Tweak the coverage percentage printout a bit, so that it's easier to view it
alongside the +- sttddev colum.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-to3kgu04449s64062val8b62@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-19 19:30:56 +08:00
|
|
|
if (add_default_attributes())
|
|
|
|
goto out;
|
2009-04-20 21:37:32 +08:00
|
|
|
|
2013-11-13 03:46:16 +08:00
|
|
|
target__validate(&target);
|
2011-01-04 03:53:33 +08:00
|
|
|
|
2012-05-07 13:09:04 +08:00
|
|
|
if (perf_evlist__create_maps(evsel_list, &target) < 0) {
|
2013-11-13 03:46:16 +08:00
|
|
|
if (target__has_task(&target)) {
|
2012-05-07 13:09:04 +08:00
|
|
|
pr_err("Problems finding threads of monitor\n");
|
2015-11-05 22:40:45 +08:00
|
|
|
parse_options_usage(stat_usage, stat_options, "p", 1);
|
|
|
|
parse_options_usage(NULL, stat_options, "t", 1);
|
2013-11-13 03:46:16 +08:00
|
|
|
} else if (target__has_cpu(&target)) {
|
2012-05-07 13:09:04 +08:00
|
|
|
perror("failed to parse CPUs map");
|
2015-11-05 22:40:45 +08:00
|
|
|
parse_options_usage(stat_usage, stat_options, "C", 1);
|
|
|
|
parse_options_usage(NULL, stat_options, "a", 1);
|
2013-11-01 15:33:15 +08:00
|
|
|
}
|
|
|
|
goto out;
|
2011-01-04 03:49:48 +08:00
|
|
|
}
|
perf stat: Introduce --per-thread option
Currently all the -p option PID arguments tasks values get aggregated
and printed as single values.
Adding --per-tasks option to print values per task.
$ perf stat -e cycles,instructions --per-thread -p 30190,30242
^C
Performance counter stats for process id '30190,30242':
cat-30190 0 cycles
yes-30242 3,842,525,421 cycles
cat-30190 0 instructions
yes-30242 10,370,817,010 instructions
1.143155657 seconds time elapsed
Also works under interval mode:
$ perf stat -e cycles,instructions --per-thread -p 30190,30242 -I 1000
# time comm-pid counts unit events
1.000073435 cat-30190 89,058 cycles
1.000073435 yes-30242 3,360,786,902 cycles (100.00%)
1.000073435 cat-30190 14,066 instructions
1.000073435 yes-30242 9,069,937,462 instructions
2.000204830 cat-30190 0 cycles
2.000204830 yes-30242 3,351,667,626 cycles
2.000204830 cat-30190 0 instructions
2.000204830 yes-30242 9,045,796,885 instructions
^C 2.771286639 cat-30190 0 cycles
2.771286639 yes-30242 2,593,884,166 cycles
2.771286639 cat-30190 0 instructions
2.771286639 yes-30242 7,001,171,191 instructions
It works only with -t and -p options, otherwise following error is
printed:
$ perf stat -e cycles --per-thread -I 1000 ls
The --per-thread option is only available when monitoring via -p -t options.
-p, --pid <pid> stat events on existing process id
-t, --tid <tid> stat events on existing thread id
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-23-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-06-26 17:29:27 +08:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Initialize thread_map with comm names,
|
|
|
|
* so we could print it out on output.
|
|
|
|
*/
|
2015-07-21 20:31:22 +08:00
|
|
|
if (stat_config.aggr_mode == AGGR_THREAD)
|
perf stat: Introduce --per-thread option
Currently all the -p option PID arguments tasks values get aggregated
and printed as single values.
Adding --per-tasks option to print values per task.
$ perf stat -e cycles,instructions --per-thread -p 30190,30242
^C
Performance counter stats for process id '30190,30242':
cat-30190 0 cycles
yes-30242 3,842,525,421 cycles
cat-30190 0 instructions
yes-30242 10,370,817,010 instructions
1.143155657 seconds time elapsed
Also works under interval mode:
$ perf stat -e cycles,instructions --per-thread -p 30190,30242 -I 1000
# time comm-pid counts unit events
1.000073435 cat-30190 89,058 cycles
1.000073435 yes-30242 3,360,786,902 cycles (100.00%)
1.000073435 cat-30190 14,066 instructions
1.000073435 yes-30242 9,069,937,462 instructions
2.000204830 cat-30190 0 cycles
2.000204830 yes-30242 3,351,667,626 cycles
2.000204830 cat-30190 0 instructions
2.000204830 yes-30242 9,045,796,885 instructions
^C 2.771286639 cat-30190 0 cycles
2.771286639 yes-30242 2,593,884,166 cycles
2.771286639 cat-30190 0 instructions
2.771286639 yes-30242 7,001,171,191 instructions
It works only with -t and -p options, otherwise following error is
printed:
$ perf stat -e cycles --per-thread -I 1000 ls
The --per-thread option is only available when monitoring via -p -t options.
-p, --pid <pid> stat events on existing process id
-t, --tid <tid> stat events on existing thread id
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-23-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-06-26 17:29:27 +08:00
|
|
|
thread_map__read_comms(evsel_list->threads);
|
|
|
|
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
if (interval && interval < 100) {
|
2015-10-02 17:04:34 +08:00
|
|
|
if (interval < 10) {
|
|
|
|
pr_err("print interval must be >= 10ms\n");
|
2015-11-05 22:40:45 +08:00
|
|
|
parse_options_usage(stat_usage, stat_options, "I", 1);
|
2015-10-02 17:04:34 +08:00
|
|
|
goto out;
|
|
|
|
} else
|
|
|
|
pr_warning("print interval < 100ms. "
|
|
|
|
"The overhead percentage could be high in some cases. "
|
|
|
|
"Please proceed with caution.\n");
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
}
|
2010-05-28 18:00:01 +08:00
|
|
|
|
2013-03-18 22:24:21 +08:00
|
|
|
if (perf_evlist__alloc_stats(evsel_list, interval))
|
2014-01-04 02:56:06 +08:00
|
|
|
goto out;
|
2010-03-18 22:36:05 +08:00
|
|
|
|
2013-02-14 20:57:27 +08:00
|
|
|
if (perf_stat_init_aggr_mode())
|
2014-01-04 02:56:06 +08:00
|
|
|
goto out;
|
2013-02-14 20:57:27 +08:00
|
|
|
|
2009-05-15 17:03:23 +08:00
|
|
|
/*
|
|
|
|
* We dont want to block the signals - that would cause
|
|
|
|
* child tasks to inherit that and Ctrl-C would not work.
|
|
|
|
* What we want is for Ctrl-C to work in the exec()-ed
|
|
|
|
* task, but being ignored by perf stat itself:
|
|
|
|
*/
|
2009-06-10 21:55:59 +08:00
|
|
|
atexit(sig_atexit);
|
2013-03-02 02:02:27 +08:00
|
|
|
if (!forever)
|
|
|
|
signal(SIGINT, skip_signal);
|
perf stat: Add interval printing
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.
The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.
$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cycles
The output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:
$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-01-29 19:47:44 +08:00
|
|
|
signal(SIGCHLD, skip_signal);
|
2009-05-15 17:03:23 +08:00
|
|
|
signal(SIGALRM, skip_signal);
|
|
|
|
signal(SIGABRT, skip_signal);
|
|
|
|
|
2009-06-13 20:57:28 +08:00
|
|
|
status = 0;
|
2013-03-02 02:02:27 +08:00
|
|
|
for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
|
2009-06-13 20:57:28 +08:00
|
|
|
if (run_count != 1 && verbose)
|
2011-08-16 04:22:33 +08:00
|
|
|
fprintf(output, "[ perf stat: executing run #%d ... ]\n",
|
|
|
|
run_idx + 1);
|
2011-04-29 00:17:11 +08:00
|
|
|
|
2009-06-13 20:57:28 +08:00
|
|
|
status = run_perf_stat(argc, argv);
|
2013-03-02 02:02:27 +08:00
|
|
|
if (forever && status != -1) {
|
2015-06-26 17:29:26 +08:00
|
|
|
print_counters(NULL, argc, argv);
|
2015-06-26 17:29:13 +08:00
|
|
|
perf_stat__reset_stats();
|
2013-03-02 02:02:27 +08:00
|
|
|
}
|
2009-06-13 20:57:28 +08:00
|
|
|
}
|
|
|
|
|
2013-03-02 02:02:27 +08:00
|
|
|
if (!forever && status != -1 && !interval)
|
2015-06-26 17:29:26 +08:00
|
|
|
print_counters(NULL, argc, argv);
|
2013-03-18 22:24:21 +08:00
|
|
|
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
if (STAT_RECORD) {
|
|
|
|
/*
|
|
|
|
* We synthesize the kernel mmap record just so that older tools
|
|
|
|
* don't emit warnings about not being able to resolve symbols
|
|
|
|
* due to /proc/sys/kernel/kptr_restrict settings and instear provide
|
|
|
|
* a saner message about no samples being in the perf.data file.
|
|
|
|
*
|
|
|
|
* This also serves to suppress a warning about f_header.data.size == 0
|
2015-11-05 22:40:48 +08:00
|
|
|
* in header.c at the moment 'perf stat record' gets introduced, which
|
|
|
|
* is not really needed once we start adding the stat specific PERF_RECORD_
|
|
|
|
* records, but the need to suppress the kptr_restrict messages in older
|
|
|
|
* tools remain -acme
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
*/
|
|
|
|
int fd = perf_data_file__fd(&perf_stat.file);
|
|
|
|
int err = perf_event__synthesize_kernel_mmap((void *)&perf_stat,
|
|
|
|
process_synthesized_event,
|
|
|
|
&perf_stat.session->machines.host);
|
|
|
|
if (err) {
|
|
|
|
pr_warning("Couldn't synthesize the kernel mmap record, harmless, "
|
|
|
|
"older tools may produce warnings about this file\n.");
|
|
|
|
}
|
|
|
|
|
2015-11-05 22:40:52 +08:00
|
|
|
if (!interval) {
|
|
|
|
if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL))
|
|
|
|
pr_err("failed to write stat round event\n");
|
|
|
|
}
|
|
|
|
|
2015-11-05 22:40:50 +08:00
|
|
|
if (!perf_stat.file.is_pipe) {
|
|
|
|
perf_stat.session->header.data_size += perf_stat.bytes_written;
|
|
|
|
perf_session__write_header(perf_stat.session, evsel_list, fd, true);
|
|
|
|
}
|
perf stat record: Add record command
Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.
The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.
Committer note:
Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.630237 task-clock (msec) # 0.528 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.083 M/sec
978,312 cycles # 1.552 GHz
671,931 stalled-cycles-frontend # 68.68% frontend cycles idle
<not supported> stalled-cycles-backend
646,379 instructions # 0.66 insns per cycle
# 1.04 stalled cycles per insn
131,046 branches # 207.931 M/sec
7,073 branch-misses # 5.40% of all branches
0.001193240 seconds time elapsed
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
non matching sample_type
$
While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:
$ oldperf evlist
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$
Which at least shows the names of the events in the perf.data file.
Additionally, such files, when passed to 'perf report' will produce:
$ oldperf report --stdio
WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.
Check /proc/sys/kernel/kptr_restrict before running 'perf record'.
As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.
Samples in kernel modules can't be resolved as well.
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
$
Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:
$ perf stat record usleep 1
Performance counter stats for 'usleep 1':
0.600796 task-clock (msec) # 0.478 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.090 M/sec
886,844 cycles # 1.476 GHz
582,169 stalled-cycles-frontend # 65.65% frontend cycles idle
<not supported> stalled-cycles-backend
638,344 instructions # 0.72 insns per cycle
# 0.91 stalled cycles per insn
130,204 branches # 216.719 M/sec
7,500 branch-misses # 5.76% of all branches
0.001255897 seconds time elapsed
$ oldperf evlist
task-clock
context-switches
cpu-migrations
page-faults
cycles
stalled-cycles-frontend
stalled-cycles-backend
instructions
branches
branch-misses
$ oldperf report --stdio
Error:
The perf.data file has no samples!
# To display the perf.data header info, please use --header/--header-only options.
#
[acme@zoo linux]$
No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-05 22:40:46 +08:00
|
|
|
|
|
|
|
perf_session__delete(perf_stat.session);
|
|
|
|
}
|
|
|
|
|
2015-12-09 10:11:27 +08:00
|
|
|
perf_stat__exit_aggr_mode();
|
2013-03-18 22:24:21 +08:00
|
|
|
perf_evlist__free_stats(evsel_list);
|
2011-02-02 02:18:10 +08:00
|
|
|
out:
|
|
|
|
perf_evlist__delete(evsel_list);
|
2009-06-13 20:57:28 +08:00
|
|
|
return status;
|
2009-04-20 21:37:32 +08:00
|
|
|
}
|