Messages in this thread Patch in this message | | | From | Jiri Olsa <> | Subject | [PATCH 8/9] perf stat: Display length strings of each run for --table option | Date | Mon, 23 Apr 2018 11:08:22 +0200 |
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Adding support to display visual aid 'length strings' to easily spot the biggest difference in time table.
$ perf stat -r 10 --table perf bench sched pipe ...
Performance counter stats for './perf bench sched pipe' (5 runs):
# Table of individual measurements: 5.189 (-0.293) # 5.189 (-0.294) # 5.186 (-0.296) # 5.663 (+0.181) ## 6.186 (+0.703) ####
# Final result: 5.483 +- 0.198 seconds time elapsed ( +- 3.62% )
Suggested-by: Ingo Molnar <mingo@kernel.org> Link: http://lkml.kernel.org/n/tip-hb3t43jryqr4d911yu1ap918@git.kernel.org Signed-off-by: Jiri Olsa <jolsa@kernel.org> --- tools/perf/builtin-stat.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 345687b0eb10..2137c7d11767 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -1759,9 +1759,15 @@ static void print_table(FILE *output, int precision, double avg) for (idx = 0; idx < run_count; idx++) { double run = (double) walltime_run[idx] / NSEC_PER_SEC; + int h, n = 1 + abs((int) (100.0 * (run - avg)/run) / 5); - fprintf(output, " %17.*f (%+.*f)\n", + fprintf(output, " %17.*f (%+.*f) ", precision, run, precision, run - avg); + + for (h = 0; h < n; h++) + fprintf(output, "#"); + + fprintf(output, "\n"); } fprintf(output, "\n%*s# Final result:\n", indent, ""); -- 2.13.6
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