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perf stat: Add units to nanosec-based counters
author
David Ahern
<dsahern@gmail.com>
Sat, 28 Sep 2013 20:28:00 +0000
(14:28 -0600)
committer
Arnaldo Carvalho de Melo
<acme@redhat.com>
Fri, 11 Oct 2013 15:17:46 +0000
(12:17 -0300)
Ingo pointed out that the task-clock counter should have the units
explicitly stated since it is not a counter.
Before:
perf stat -a -- sleep 1
Performance counter stats for 'sleep 1':
16186.874834 task-clock # 16.154 CPUs utilized
...
After:
perf stat -a -- sleep 1
Performance counter stats for 'system wide':
16146.402138 task-clock (msec) # 16.125 CPUs utilized
...
Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link:
http://lkml.kernel.org/r/1380400080-9211-4-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/builtin-stat.c
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diff --git
a/tools/perf/builtin-stat.c
b/tools/perf/builtin-stat.c
index 2178e6636f71d7b3c9f12f05d1fdd93de81480d8..1a9c95d270aa2326f45ee0d2c036df10601f48a9 100644
(file)
--- a/
tools/perf/builtin-stat.c
+++ b/
tools/perf/builtin-stat.c
@@
-706,10
+706,13
@@
static void nsec_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
{
double msecs = avg / 1e6;
const char *fmt = csv_output ? "%.6f%s%s" : "%18.6f%s%-25s";
+ char name[25];
aggr_printout(evsel, cpu, nr);
- fprintf(output, fmt, msecs, csv_sep, perf_evsel__name(evsel));
+ scnprintf(name, sizeof(name), "%s%s",
+ perf_evsel__name(evsel), csv_output ? "" : " (msec)");
+ fprintf(output, fmt, msecs, csv_sep, name);
if (evsel->cgrp)
fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);