perf stat: Output running time and run/enabled ratio in CSV mode
The information how much a counter ran in 'perf stat' can be quite
interesting for other tools to judge how trustworthy a measurement is.
Currently it is only output in non CSV mode.
This patches make perf stat always output the running time and the
enabled/running ratio in CSV mode.
This adds two new fields at the end for each line. I assume that
existing tools ignore new fields at the end, so it's on by default.
Only CSV mode is affected, no difference otherwise.
v2: Add extra print_running function
v3: Avoid printing nan
v4: Remove some elses and add brackets.
v5: Move non CSV case into print_running
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1426083387-17006-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index d28949d..d58e50c 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -769,6 +769,19 @@
return ret;
}
+static void print_running(u64 run, u64 ena)
+{
+ if (csv_output) {
+ fprintf(output, "%s%" PRIu64 "%s%.2f",
+ csv_sep,
+ run,
+ csv_sep,
+ ena ? 100.0 * run / ena : 100.0);
+ } else if (run != ena) {
+ fprintf(output, " (%.2f%%)", 100.0 * run / ena);
+ }
+}
+
static void print_noise_pct(double total, double avg)
{
double pct = rel_stddev_stats(total, avg);
@@ -1252,6 +1265,7 @@
fprintf(output, "%s%s",
csv_sep, counter->cgrp->name);
+ print_running(run, ena);
fputc('\n', output);
continue;
}
@@ -1262,13 +1276,10 @@
else
abs_printout(id, nr, counter, uval);
- if (!csv_output) {
+ if (!csv_output)
print_noise(counter, 1.0);
- if (run != ena)
- fprintf(output, " (%.2f%%)",
- 100.0 * run / ena);
- }
+ print_running(run, ena);
fputc('\n', output);
}
}
@@ -1284,6 +1295,10 @@
double avg = avg_stats(&ps->res_stats[0]);
int scaled = counter->counts->scaled;
double uval;
+ double avg_enabled, avg_running;
+
+ avg_enabled = avg_stats(&ps->res_stats[1]);
+ avg_running = avg_stats(&ps->res_stats[2]);
if (prefix)
fprintf(output, "%s", prefix);
@@ -1303,6 +1318,7 @@
if (counter->cgrp)
fprintf(output, "%s%s", csv_sep, counter->cgrp->name);
+ print_running(avg_running, avg_enabled);
fputc('\n', output);
return;
}
@@ -1316,19 +1332,7 @@
print_noise(counter, avg);
- if (csv_output) {
- fputc('\n', output);
- return;
- }
-
- if (scaled) {
- double avg_enabled, avg_running;
-
- avg_enabled = avg_stats(&ps->res_stats[1]);
- avg_running = avg_stats(&ps->res_stats[2]);
-
- fprintf(output, " [%5.2f%%]", 100 * avg_running / avg_enabled);
- }
+ print_running(avg_running, avg_enabled);
fprintf(output, "\n");
}
@@ -1370,6 +1374,7 @@
fprintf(output, "%s%s",
csv_sep, counter->cgrp->name);
+ print_running(run, ena);
fputc('\n', output);
continue;
}
@@ -1381,13 +1386,10 @@
else
abs_printout(cpu, 0, counter, uval);
- if (!csv_output) {
+ if (!csv_output)
print_noise(counter, 1.0);
+ print_running(run, ena);
- if (run != ena)
- fprintf(output, " (%.2f%%)",
- 100.0 * run / ena);
- }
fputc('\n', output);
}
}