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perf bench uprobe: Show diff to previous

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Will be useful to show the incremental overhead as we do more stuff in
the BPF program attached to the uprobes.

Acked-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andre Fredette <anfredet@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: Dave Tucker <datucker@redhat.com>
Cc: Derek Barbosa <debarbos@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/lkml/20230719204910.539044-4-acme@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2023-07-05 08:49:40 -03:00
parent dded6f615b
commit 54d811023b
1 changed files with 16 additions and 5 deletions
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21
tools/perf/bench/uprobe.c
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@ -36,24 +36,35 @@ static const char * const bench_uprobe_usage[] = {
static int bench_uprobe_format__default_fprintf(const char *name, const char *unit, u64 diff, FILE *fp) static int bench_uprobe_format__default_fprintf(const char *name, const char *unit, u64 diff, FILE *fp)
{ {
static u64 baseline; static u64 baseline, previous;
s64 diff_to_baseline = diff - baseline; s64 diff_to_baseline = diff - baseline,
diff_to_previous = diff - previous;
int printed = fprintf(fp, "# Executed %'d %s calls\n", loops, name); int printed = fprintf(fp, "# Executed %'d %s calls\n", loops, name);
printed += fprintf(fp, " %14s: %'" PRIu64 " %ss", "Total time", diff, unit); printed += fprintf(fp, " %14s: %'" PRIu64 " %ss", "Total time", diff, unit);
if (baseline) if (baseline) {
printed += fprintf(fp, " %s%'" PRId64 " to baseline", diff_to_baseline > 0 ? "+" : "", diff_to_baseline); printed += fprintf(fp, " %s%'" PRId64 " to baseline", diff_to_baseline > 0 ? "+" : "", diff_to_baseline);
if (previous != baseline)
fprintf(stdout, " %s%'" PRId64 " to previous", diff_to_previous > 0 ? "+" : "", diff_to_previous);
}
printed += fprintf(fp, "\n\n %'.3f %ss/op", (double)diff / (double)loops, unit); printed += fprintf(fp, "\n\n %'.3f %ss/op", (double)diff / (double)loops, unit);
if (baseline) if (baseline) {
printed += fprintf(fp, " %'.3f %ss/op to baseline", (double)diff_to_baseline / (double)loops, unit); printed += fprintf(fp, " %'.3f %ss/op to baseline", (double)diff_to_baseline / (double)loops, unit);
else
if (previous != baseline)
printed += fprintf(fp, " %'.3f %ss/op to previous", (double)diff_to_previous / (double)loops, unit);
} else {
baseline = diff; baseline = diff;
}
fputc('\n', fp); fputc('\n', fp);
previous = diff;
return printed + 1; return printed + 1;
} }