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perf bench: Improve sched-pipe.c with more comfortable output

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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>
This commit is contained in:
Hitoshi Mitake 2009-11-11 00:04:01 +09:00 committed by Ingo Molnar
parent 79e295d4bd
commit ff676b193a
1 changed files with 6 additions and 5 deletions
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9
tools/perf/bench/sched-pipe.c
View file

@ -92,17 +92,18 @@ int bench_sched_pipe(int argc, const char **argv,
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",
printf(" %14s: %lu.%03lu [sec]\n\n", "Total time",
diff.tv_sec, diff.tv_usec/1000);
printf("\t\t%lf usecs/op\n",
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;