From 462f57dbf9fa1fdcdeae2e0b19a667f7f9989bdb Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Mon, 26 Apr 2021 18:37:17 -0700 Subject: perf report: Print percentage of each event statistics It's sometimes useful to see how many samples vs other events in the data file with percent values. $ perf report --stat Aggregated stats: TOTAL events: 20064 MMAP events: 239 ( 1.2%) COMM events: 1518 ( 7.6%) EXIT events: 1 ( 0.0%) FORK events: 1517 ( 7.6%) SAMPLE events: 4015 (20.0%) MMAP2 events: 12769 (63.6%) FINISHED_ROUND events: 2 ( 0.0%) THREAD_MAP events: 1 ( 0.0%) CPU_MAP events: 1 ( 0.0%) TIME_CONV events: 1 ( 0.0%) cycles stats: SAMPLE events: 2475 instructions stats: SAMPLE events: 1540 Suggested-by: Andi Kleen Reviewed-by: Andi Kleen Signed-off-by: Namhyung Kim Tested-by: Arnaldo Carvalho de Melo Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Ian Rogers Cc: Ingo Molnar Cc: Mark Rutland Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20210427013717.1651674-7-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/stdio/hist.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'tools/perf/ui') diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c index d9e634406175..f36270485168 100644 --- a/tools/perf/ui/stdio/hist.c +++ b/tools/perf/ui/stdio/hist.c @@ -902,6 +902,7 @@ size_t events_stats__fprintf(struct events_stats *stats, FILE *fp, { int i; size_t ret = 0; + u32 total = stats->nr_events[0]; for (i = 0; i < PERF_RECORD_HEADER_MAX; ++i) { const char *name; @@ -912,7 +913,14 @@ size_t events_stats__fprintf(struct events_stats *stats, FILE *fp, if (skip_empty && !stats->nr_events[i]) continue; - ret += fprintf(fp, "%16s events: %10d\n", name, stats->nr_events[i]); + if (i && total) { + ret += fprintf(fp, "%16s events: %10d (%4.1f%%)\n", + name, stats->nr_events[i], + 100.0 * stats->nr_events[i] / total); + } else { + ret += fprintf(fp, "%16s events: %10d\n", + name, stats->nr_events[i]); + } } return ret; -- cgit v1.2.3