Commit 5fde2523 authored Feb 06, 2012 by Namhyung Kim Committed by Arnaldo Carvalho de Melo Feb 06, 2012

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>

parent 762b2935

tools/perf/builtin-stat.c

+7 −1

Original line number	Diff line number	Diff line
		@@ -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, " ");
		}