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>

1 files changed, 6 insertions, 5 deletions

diff --git a/tools/perf/bench/sched-pipe.c b/tools/perf/bench/sched-pipe.c
index a9ac186714b4..238185f97977 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;