linux-kernel - [tip:perf/bench] perf bench: Improve sched-pipe.c with more comfortable output

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Date:	Tue, 10 Nov 2009 19:01:12 GMT
From:	tip-bot for Hitoshi Mitake <mitake@....info.waseda.ac.jp>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, paulus@...ba.org, hpa@...or.com,
	mingo@...hat.com, a.p.zijlstra@...llo.nl,
	mitake@....info.waseda.ac.jp, tglx@...utronix.de, mingo@...e.hu
Subject: [tip:perf/bench] perf bench: Improve sched-pipe.c with more comfortable output

Commit-ID:  ff676b193a401b23c84a79a7ec06559f3eaae917
Gitweb:     http://git.kernel.org/tip/ff676b193a401b23c84a79a7ec06559f3eaae917
Author:     Hitoshi Mitake <mitake@....info.waseda.ac.jp>
AuthorDate: Wed, 11 Nov 2009 00:04:01 +0900
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Tue, 10 Nov 2009 19:56:45 +0100

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@....info.waseda.ac.jp>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Paul Mackerras <paulus@...ba.org>
LKML-Reference: <1257865442-20252-3-git-send-email-mitake@....info.waseda.ac.jp>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 tools/perf/bench/sched-pipe.c |   11 ++++++-----
 1 files changed, 6 insertions(+), 5 deletions(-)

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 @@ 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",
-		       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;
--
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