perf bench: Improve sched-pipe.c with more comfortable output
This patch improves sched-pipe.c with more comfortable output.
Change points are comment style description and
formatting numerical values and its units.
Example:
| % ./perf bench sched pipe
| # Running sched/pipe benchmark...
| # Extecuted 1000000 pipe operations between two tasks
|
| Total time:5.822 [sec]
|
| 5.822553 usecs/op
| 171745 ops/sec
Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1257865442-20252-3-git-send-email-mitake@dcl.info.waseda.ac.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/tools/perf/bench/sched-pipe.c b/tools/perf/bench/sched-pipe.c
index a9ac186..238185f 100644
--- a/tools/perf/bench/sched-pipe.c
+++ b/tools/perf/bench/sched-pipe.c
@@ -92,17 +92,18 @@
switch (bench_format) {
case BENCH_FORMAT_DEFAULT:
- printf("(executing %d pipe operations between two tasks)\n\n",
+ printf("# Extecuted %d pipe operations between two tasks\n\n",
loops);
result_usec = diff.tv_sec * 1000000;
result_usec += diff.tv_usec;
- printf("\tTotal time:%lu.%03lu sec\n",
- diff.tv_sec, diff.tv_usec / 1000);
- printf("\t\t%lf usecs/op\n",
+ printf(" %14s: %lu.%03lu [sec]\n\n", "Total time",
+ diff.tv_sec, diff.tv_usec/1000);
+
+ printf(" %14lf usecs/op\n",
(double)result_usec / (double)loops);
- printf("\t\t%d ops/sec\n",
+ printf(" %14d ops/sec\n",
(int)((double)loops /
((double)result_usec / (double)1000000)));
break;