Commit-ID: 5fde2523bddb71d96f12b6ee8d2a9a43cb99da96
Gitweb: http://git.kernel.org/tip/5fde2523bddb71d96f12b6ee8d2a9a43cb99da96
Author: Namhyung Kim <namhyung.kim@xxxxxxx>
AuthorDate: Mon, 6 Feb 2012 16:44:44 +0900
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 6 Feb 2012 19:17:11 -0200
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@xxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Link: http://lkml.kernel.org/r/1328514285-26232-1-git-send-email-namhyung.kim@xxxxxxx
Signed-off-by: Namhyung Kim <namhyung.kim@xxxxxxx>
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/builtin-stat.c | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 459b862..32d930e 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, " ");
}
--
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