mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-29 22:02:02 +00:00
Code Issues Releases Wiki Activity

perf report: Correct display of samples and events in header

Browse source 
This patch prints the number of samples and the count of performance
events separately.

This allows comparing performance of different applications with each
other.

Previously, the sample count was displayed against an 'Events:' heading.
With this patch, the header now reads (for example):

Samples: 5K of event 'instructions'
Event count (approx.): 2993026545

The patch covers both the stdio and the browser interface.

Signed-off-by: Ashay Rane <ashay.rane@tacc.utexas.edu>
[ committer note: Fixed wrt e7f01d1 ]
Link: http://lkml.kernel.org/n/tip-h4nfjm8msedlk8gxkzivfh5y@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ashay Rane 2012-04-05 21:01:01 -05:00 committed by Arnaldo Carvalho de Melo
parent 08be4eeda4
commit cc68628096
2 changed files with 14 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
tools/perf/builtin-report.c
View file

@ -296,12 +296,15 @@ static size_t hists__fprintf_nr_sample_events(struct hists *self,
{
size_t ret;
char unit;
unsigned long nr_events = self->stats.nr_events[PERF_RECORD_SAMPLE];
unsigned long nr_samples = self->stats.nr_events[PERF_RECORD_SAMPLE];
u64 nr_events = self->stats.total_period;
nr_events = convert_unit(nr_events, &unit);
ret = fprintf(fp, "# Events: %lu%c", nr_events, unit);
nr_samples = convert_unit(nr_samples, &unit);
ret = fprintf(fp, "# Samples: %lu%c", nr_samples, unit);
if (evname != NULL)
ret += fprintf(fp, " %s", evname);
ret += fprintf(fp, " of event '%s'", evname);
ret += fprintf(fp, "\n# Event count (approx.): %lu", nr_events);
return ret + fprintf(fp, "\n#\n");
}

10
tools/perf/util/ui/browsers/hists.c
View file

@ -840,10 +840,14 @@ static int hists__browser_title(struct hists *self, char *bf, size_t size,
int printed;
const struct dso *dso = self->dso_filter;
const struct thread *thread = self->thread_filter;
unsigned long nr_events = self->stats.nr_events[PERF_RECORD_SAMPLE];
unsigned long nr_samples = self->stats.nr_events[PERF_RECORD_SAMPLE];
u64 nr_events = self->stats.total_period;
nr_samples = convert_unit(nr_samples, &unit);
printed = scnprintf(bf, size,
"Samples: %lu%c of event '%s', Event count (approx.): %lu",
nr_samples, unit, ev_name, nr_events);
nr_events = convert_unit(nr_events, &unit);
printed = scnprintf(bf, size, "Events: %lu%c %s", nr_events, unit, ev_name);
if (self->uid_filter_str)
printed += snprintf(bf + printed, size - printed,