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Arnaldo Carvalho de Melo 1b46cddfcc perf tools: Use rb_tree for maps 
Threads can have many and kernel modules will be represented as a
tree of maps as well.

Ah, and for a perf.data with 146607 samples:

Before:

[root@doppio ~]# perf stat -r 5 perf report > /dev/null

 Performance counter stats for 'perf report' (5 runs):

     699.823680  task-clock-msecs         #      0.991 CPUs    ( +-   0.454% )
             74  context-switches         #      0.000 M/sec   ( +-   1.709% )
              2  CPU-migrations           #      0.000 M/sec   ( +-  17.008% )
          23114  page-faults              #      0.033 M/sec   ( +-   0.000% )
     1381257019  cycles                   #   1973.721 M/sec   ( +-   0.290% )
     1456894438  instructions             #      1.055 IPC     ( +-   0.007% )
       18779818  cache-references         #     26.835 M/sec   ( +-   0.380% )
         641799  cache-misses             #      0.917 M/sec   ( +-   1.200% )

    0.705972729  seconds time elapsed   ( +-   0.501% )

[root@doppio ~]#

After

 Performance counter stats for 'perf report' (5 runs):

     691.261451  task-clock-msecs         #      0.993 CPUs    ( +-   0.307% )
             72  context-switches         #      0.000 M/sec   ( +-   0.829% )
              6  CPU-migrations           #      0.000 M/sec   ( +-  18.409% )
          23127  page-faults              #      0.033 M/sec   ( +-   0.000% )
     1366395876  cycles                   #   1976.670 M/sec   ( +-   0.153% )
     1443136016  instructions             #      1.056 IPC     ( +-   0.012% )
       17956402  cache-references         #     25.976 M/sec   ( +-   0.325% )
         661924  cache-misses             #      0.958 M/sec   ( +-   1.335% )

    0.696127275  seconds time elapsed   ( +-   0.377% )

I.e. we see some speedup too.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
LKML-Reference: <20090928174846.GA3361@ghostprotocols.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-30 13:57:56 +02:00
..
Documentation perf util: Make the timechart SVG width dynamic 2009-09-20 19:37:35 +02:00
util perf tools: Use rb_tree for maps 2009-09-30 13:57:56 +02:00
.gitignore perf tools: .gitignore += perf*.html 2009-09-24 14:01:22 +02:00
builtin-annotate.c perf tools: Put common histogram functions in their own file 2009-09-30 13:57:56 +02:00
builtin-help.c perf: Enable more compiler warnings 2009-08-16 10:47:47 +02:00
builtin-list.c perf list: Fix large list output by using the pager 2009-08-13 09:05:48 +02:00
builtin-record.c perf: Do the big rename: Performance Counters -> Performance Events 2009-09-21 14:28:04 +02:00
builtin-report.c perf tools: Put common histogram functions in their own file 2009-09-30 13:57:56 +02:00
builtin-sched.c perf: Do the big rename: Performance Counters -> Performance Events 2009-09-21 14:28:04 +02:00
builtin-stat.c perf stat: Fix zero total printouts 2009-09-22 15:01:47 +02:00
builtin-timechart.c perf: Do the big rename: Performance Counters -> Performance Events 2009-09-21 14:28:04 +02:00
builtin-top.c perf: Do the big rename: Performance Counters -> Performance Events 2009-09-21 14:28:04 +02:00
builtin-trace.c perf: Do the big rename: Performance Counters -> Performance Events 2009-09-21 14:28:04 +02:00
builtin.h perf: Add the timechart tool 2009-09-19 11:42:13 +02:00
command-list.txt perf: Add timechart help text and add timechart to "perf help" 2009-09-19 18:57:53 +02:00
CREDITS perf_counter tools: Add CREDITS file for Git contributors 2009-06-24 19:54:29 +02:00
design.txt perf: Do the big rename: Performance Counters -> Performance Events 2009-09-21 14:28:04 +02:00
Makefile perf tools: Use rb_tree for maps 2009-09-30 13:57:56 +02:00
perf.c perf: Add the timechart tool 2009-09-19 11:42:13 +02:00
perf.h perf: Do the big rename: Performance Counters -> Performance Events 2009-09-21 14:28:04 +02:00