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Commit ff676b19 authored by Hitoshi Mitake's avatar Hitoshi Mitake Committed by Ingo Molnar
Browse files

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: default avatarHitoshi 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: default avatarIngo Molnar <mingo@elte.hu>
parent 79e295d4

tools/perf/bench/sched-pipe.c

+6 −5
Original line number Diff line number Diff line
@@ -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;