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authorNamhyung Kim <namhyung.kim@lge.com>2012-02-06 08:44:44 +0100
committerArnaldo Carvalho de Melo <acme@redhat.com>2012-02-06 22:17:11 +0100
commit5fde2523bddb71d96f12b6ee8d2a9a43cb99da96 (patch)
tree2833458233e01dc78a900b444a03f6ee58dc834c /tools/perf/builtin-stat.c
parentperf doc: Allow producing documentation in a specified output directory (diff)
downloadlinux-5fde2523bddb71d96f12b6ee8d2a9a43cb99da96.tar.xz
linux-5fde2523bddb71d96f12b6ee8d2a9a43cb99da96.zip
perf stat: Adjust print unit
The default 'M/sec' unit is not useful if the result is small enough. Adjust it dynamically according to the value. Cc: Ingo Molnar <mingo@elte.hu> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1328514285-26232-1-git-send-email-namhyung.kim@lge.com Signed-off-by: Namhyung Kim <namhyung.kim@lge.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-stat.c')
-rw-r--r--tools/perf/builtin-stat.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 459b8620a5d9..32d930eb754e 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -844,12 +844,18 @@ static void abs_printout(int cpu, struct perf_evsel *evsel, double avg)
fprintf(output, " # %8.3f GHz ", ratio);
} else if (runtime_nsecs_stats[cpu].n != 0) {
+ char unit = 'M';
+
total = avg_stats(&runtime_nsecs_stats[cpu]);
if (total)
ratio = 1000.0 * avg / total;
+ if (ratio < 0.001) {
+ ratio *= 1000;
+ unit = 'K';
+ }
- fprintf(output, " # %8.3f M/sec ", ratio);
+ fprintf(output, " # %8.3f %c/sec ", ratio, unit);
} else {
fprintf(output, " ");
}