diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2018-11-11 20:02:46 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-12-17 14:58:33 -0300 |
| commit | 97f7e0b33db81fd821828390e9095771abe62816 (patch) | |
| tree | c6fbeacb43c62c496da5d090ddf1f6b4f24786ea | |
| parent | d63b9f6fea7613e2fdc8a5ef7e17ecc9cf24bf9d (diff) | |
perf top: Save and display the drop count stats
Add drop count to 'perf top' headers:
# perf top --stdio
PerfTop: 3549 irqs/sec kernel:51.8% exact: 100.0% lost: 0/0 drop: 0/0 [4000Hz cycles:ppp], (all, 8 CPUs)
# perf top
Samples: 0 of event 'cycles:ppp', 4000 Hz, Event count (approx.): 0 lost: 0/0 drop: 0/0
The format is: <current period drop>/<total drop>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/tip-2lj87zz8tq9ye1ntax3ulw0n@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/builtin-top.c | 5 | ||||
| -rw-r--r-- | tools/perf/ui/browsers/hists.c | 4 | ||||
| -rw-r--r-- | tools/perf/util/top.c | 7 | ||||
| -rw-r--r-- | tools/perf/util/top.h | 2 |
4 files changed, 13 insertions, 5 deletions
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 234232d538c2..9166f6087e3f 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -1112,8 +1112,11 @@ static int deliver_event(struct ordered_events *qe, struct machine *machine; int ret = -1; - if (should_drop(qevent, top)) + if (should_drop(qevent, top)) { + top->drop++; + top->drop_total++; return 0; + } ret = perf_evlist__parse_sample(evlist, event, &sample); if (ret) { diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c index ae208c16c8a3..36b262c49f51 100644 --- a/tools/perf/ui/browsers/hists.c +++ b/tools/perf/ui/browsers/hists.c @@ -2223,6 +2223,10 @@ static int hists_browser__scnprintf_title(struct hist_browser *browser, char *bf " lost: %" PRIu64 "/%" PRIu64, top->lost, top->lost_total); + printed += scnprintf(bf + printed, size - printed, + " drop: %" PRIu64 "/%" PRIu64, + top->drop, top->drop_total); + if (top->zero) printed += scnprintf(bf + printed, size - printed, " [z]"); } diff --git a/tools/perf/util/top.c b/tools/perf/util/top.c index e6582fa6a4db..31a8dee9af69 100644 --- a/tools/perf/util/top.c +++ b/tools/perf/util/top.c @@ -46,8 +46,9 @@ size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size) samples_per_sec; ret = SNPRINTF(bf, size, " PerfTop:%8.0f irqs/sec kernel:%4.1f%%" - " exact: %4.1f%% lost: %" PRIu64 "/%" PRIu64 " [", samples_per_sec, - ksamples_percent, esamples_percent, top->lost, top->lost_total); + " exact: %4.1f%% lost: %" PRIu64 "/%" PRIu64 " drop: %" PRIu64 "/%" PRIu64 " [", + samples_per_sec, ksamples_percent, esamples_percent, + top->lost, top->lost_total, top->drop, top->drop_total); } else { float us_samples_per_sec = top->us_samples / top->delay_secs; float guest_kernel_samples_per_sec = top->guest_kernel_samples / top->delay_secs; @@ -113,5 +114,5 @@ void perf_top__reset_sample_counters(struct perf_top *top) { top->samples = top->us_samples = top->kernel_samples = top->exact_samples = top->guest_kernel_samples = - top->guest_us_samples = top->lost = 0; + top->guest_us_samples = top->lost = top->drop = 0; } diff --git a/tools/perf/util/top.h b/tools/perf/util/top.h index 5bce62ebcf14..19f95eaf75c8 100644 --- a/tools/perf/util/top.h +++ b/tools/perf/util/top.h @@ -22,7 +22,7 @@ struct perf_top { * Symbols will be added here in perf_event__process_sample and will * get out after decayed. */ - u64 samples, lost, lost_total; + u64 samples, lost, lost_total, drop, drop_total; u64 kernel_samples, us_samples; u64 exact_samples; u64 guest_us_samples, guest_kernel_samples; |