Commit-ID: 9aae82a5d1a3a31a68e3b3eec4ac18e191930a11 Gitweb: http://git.kernel.org/tip/9aae82a5d1a3a31a68e3b3eec4ac18e191930a11 Author: Ingo Molnar <mingo@xxxxxxx> AuthorDate: Sat, 27 Jun 2009 06:24:32 +0200 Committer: Ingo Molnar <mingo@xxxxxxx> CommitDate: Sat, 27 Jun 2009 06:24:32 +0200 perf stat: Fix multi-run stats In multi-run (-r/--repeat) printouts, print out the noise of the wall-clock average as well. Also, fix a bug in printing out scaled counters: if it was not scaled then we should not update the average with -1. Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> Cc: Mike Galbraith <efault@xxxxxx> Cc: Paul Mackerras <paulus@xxxxxxxxx> Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@xxxxxxx> --- tools/perf/builtin-stat.c | 13 +++++++++---- 1 files changed, 9 insertions(+), 4 deletions(-) diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index cdcd058..e4bc4ed 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -353,8 +353,9 @@ static void calc_avg(void) event_res_avg[j]+1, event_res[i][j]+1); update_avg("counter/2", j, event_res_avg[j]+2, event_res[i][j]+2); - update_avg("scaled", j, - event_scaled_avg + j, event_scaled[i]+j); + if (event_scaled[i][j] != -1) + update_avg("scaled", j, + event_scaled_avg + j, event_scaled[i]+j); } } runtime_nsecs_avg /= run_count; @@ -420,9 +421,13 @@ static void print_stat(int argc, const char **argv) fprintf(stderr, "\n"); - fprintf(stderr, " %14.9f seconds time elapsed.\n", + fprintf(stderr, " %14.9f seconds time elapsed", (double)walltime_nsecs_avg/1e9); - fprintf(stderr, "\n"); + if (run_count > 1) { + fprintf(stderr, " ( +- %7.3f%% )", + 100.0*(double)walltime_nsecs_noise/(double)walltime_nsecs_avg); + } + fprintf(stderr, "\n\n"); } static volatile int signr = -1; -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html