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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-05-05 21:46:50 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-05-06 03:03:57 +0300 |
| commit | 03548ebf6d8cc8a3a782121cf3e54ea41230e227 (patch) | |
| tree | aa718f19ab5c705be4a26a99f3e306b764b8798e /tools | |
| parent | b535d523dce58e8e94f7dbf741f1e9b5479e61d4 (diff) | |
| download | linux-03548ebf6d8cc8a3a782121cf3e54ea41230e227.tar.xz | |
perf trace: Do not show the runtime_ms for a thread when not collecting it
That field is only updated when we use the "sched:sched_stat_runtime"
tracepoint, and that is only done so far when we use the '--stat' command line
option, without it we get just zeros, confusing the users:
Without this patch:
# trace -a -s sleep 1
<SNIP>
qemu-system-x86 (9931), 468 events, 9.6%, 0.000 msec
syscall calls total min avg max stddev
(msec) (msec) (msec) (msec) (%)
---------- ------ --------- --------- --------- --------- ------
ppoll 98 982.374 0.000 10.024 29.983 12.65%
write 34 0.401 0.005 0.012 0.027 5.49%
ioctl 102 0.347 0.002 0.003 0.007 3.08%
firefox (10871), 1856 events, 38.2%, 0.000 msec
(msec) (msec) (msec) (msec) (%)
---------- ------ --------- --------- --------- --------- ------
poll 395 934.873 0.000 2.367 17.120 11.51%
recvmsg 395 0.988 0.001 0.003 0.021 4.20%
read 106 0.460 0.002 0.004 0.007 3.17%
futex 24 0.108 0.001 0.004 0.010 10.05%
mmap 2 0.041 0.016 0.021 0.026 23.92%
write 6 0.027 0.004 0.004 0.005 2.52%
After this patch that ', 0.000 msecs' gets suppressed when --stat is not
in use.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-p7emqrsw7900tdkg43v9l1e1@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/builtin-trace.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index c61e61240b3b..66aa2a00414b 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -2860,7 +2860,11 @@ static size_t trace__fprintf_thread(FILE *fp, struct thread *thread, struct trac printed += fprintf(fp, ", %lu majfaults", ttrace->pfmaj); if (ttrace->pfmin) printed += fprintf(fp, ", %lu minfaults", ttrace->pfmin); - printed += fprintf(fp, ", %.3f msec\n", ttrace->runtime_ms); + if (trace->sched) + printed += fprintf(fp, ", %.3f msec\n", ttrace->runtime_ms); + else if (fputc('\n', fp) != EOF) + ++printed; + printed += thread__dump_stats(ttrace, trace, fp); return printed; |