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perf bench: Run inject-build-id with --buildid-all option too

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For comparison, it now runs the benchmark twice - one if regular -b and
another for --buildid-all.

  $ perf bench internals inject-build-id
  # Running 'internals/inject-build-id' benchmark:
    Average build-id injection took: 21.002 msec (+- 0.172 msec)
    Average time per event: 2.059 usec (+- 0.017 usec)
    Average memory usage: 8169 KB (+- 0 KB)
    Average build-id-all injection took: 19.543 msec (+- 0.124 msec)
    Average time per event: 1.916 usec (+- 0.012 usec)
    Average memory usage: 7348 KB (+- 0 KB)

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Link: https://lore.kernel.org/r/20201012070214.2074921-7-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2020-10-12 16:02:14 +09:00 committed by Arnaldo Carvalho de Melo
parent 27c9c3424f
commit bf7ef5ddb0
1 changed files with 35 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
tools/perf/bench/inject-buildid.c
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@ -271,7 +271,7 @@ static void *data_reader(void *arg)
return NULL;
}
static int setup_injection(struct bench_data *data)
static int setup_injection(struct bench_data *data, bool build_id_all)
{
int ready_pipe[2];
int dev_null_fd;
@ -292,6 +292,7 @@ static int setup_injection(struct bench_data *data)
if (data->pid == 0) {
const char **inject_argv;
int inject_argc = 2;
close(data->input_pipe[1]);
close(data->output_pipe[0]);
@ -308,17 +309,22 @@ static int setup_injection(struct bench_data *data)
dup2(dev_null_fd, STDERR_FILENO);
inject_argv = calloc(3, sizeof(*inject_argv));
if (build_id_all)
inject_argc++;
inject_argv = calloc(inject_argc + 1, sizeof(*inject_argv));
if (inject_argv == NULL)
exit(1);
inject_argv[0] = strdup("inject");
inject_argv[1] = strdup("-b");
if (build_id_all)
inject_argv[2] = strdup("--buildid-all");
/* signal that we're ready to go */
close(ready_pipe[1]);
cmd_inject(2, inject_argv);
cmd_inject(inject_argc, inject_argv);
exit(0);
}
@ -377,27 +383,17 @@ static int inject_build_id(struct bench_data *data, u64 *max_rss)
return 0;
}
static int do_inject_loop(struct bench_data *data)
static void do_inject_loop(struct bench_data *data, bool build_id_all)
{
unsigned int i;
struct stats time_stats, mem_stats;
double time_average, time_stddev;
double mem_average, mem_stddev;
srand(time(NULL));
init_stats(&time_stats);
init_stats(&mem_stats);
symbol__init(NULL);
bench_sample_type = PERF_SAMPLE_IDENTIFIER | PERF_SAMPLE_IP;
bench_sample_type |= PERF_SAMPLE_TID | PERF_SAMPLE_TIME;
bench_id_hdr_size = 32;
collect_dso();
if (nr_dsos == 0) {
printf(" Cannot collect DSOs for injection\n");
return -1;
}
pr_debug(" Build-id%s injection benchmark\n", build_id_all ? "-all" : "");
for (i = 0; i < iterations; i++) {
struct timeval start, end, diff;
@ -405,7 +401,7 @@ static int do_inject_loop(struct bench_data *data)
pr_debug(" Iteration #%d\n", i+1);
if (setup_injection(data) < 0) {
if (setup_injection(data, build_id_all) < 0) {
printf(" Build-id injection setup failed\n");
break;
}
@ -427,8 +423,8 @@ static int do_inject_loop(struct bench_data *data)
time_average = avg_stats(&time_stats) / USEC_PER_MSEC;
time_stddev = stddev_stats(&time_stats) / USEC_PER_MSEC;
printf(" Average build-id injection took: %.3f msec (+- %.3f msec)\n",
time_average, time_stddev);
printf(" Average build-id%s injection took: %.3f msec (+- %.3f msec)\n",
build_id_all ? "-all" : "", time_average, time_stddev);
/* each iteration, it processes MMAP2 + BUILD_ID + nr_samples * SAMPLE */
time_average = avg_stats(&time_stats) / (nr_mmaps * (nr_samples + 2));
@ -440,6 +436,26 @@ static int do_inject_loop(struct bench_data *data)
mem_stddev = stddev_stats(&mem_stats);
printf(" Average memory usage: %.0f KB (+- %.0f KB)\n",
mem_average, mem_stddev);
}
static int do_inject_loops(struct bench_data *data)
{
srand(time(NULL));
symbol__init(NULL);
bench_sample_type = PERF_SAMPLE_IDENTIFIER | PERF_SAMPLE_IP;
bench_sample_type |= PERF_SAMPLE_TID | PERF_SAMPLE_TIME;
bench_id_hdr_size = 32;
collect_dso();
if (nr_dsos == 0) {
printf(" Cannot collect DSOs for injection\n");
return -1;
}
do_inject_loop(data, false);
do_inject_loop(data, true);
release_dso();
return 0;
@ -455,6 +471,6 @@ int bench_inject_build_id(int argc, const char **argv)
exit(EXIT_FAILURE);
}
return do_inject_loop(&data);
return do_inject_loops(&data);
}