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| author | Daniel Bristot de Oliveira <bristot@kernel.org> | 2021-12-10 21:11:26 +0300 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2022-01-14 01:02:43 +0300 |
| commit | 1eeb6328e8b3a917ba0be4965f272147dbd4cf55 (patch) | |
| tree | b79a0c03b8de594e2fffcf511dcf706ee31bd2ee /tools/tracing/rtla/src/timerlat.h | |
| parent | a828cd18bc4ad72ff6d64c0dd23dc814a6741fed (diff) | |
| download | linux-1eeb6328e8b3a917ba0be4965f272147dbd4cf55.tar.xz | |
rtla/timerlat: Add timerlat hist mode
The rtla hist hist mode displays a histogram of each tracer event
occurrence, both for IRQ and timer latencies. The tool also allows
many configurations of the timerlat tracer and the collection of
the tracer output.
Here is one example of the rtla timerlat hist mode output:
---------- %< ----------
[root@alien ~]# rtla timerlat hist -c 0-3 -d 1M
# RTLA timerlat histogram
# Time unit is microseconds (us)
# Duration: 0 00:01:00
Index IRQ-000 Thr-000 IRQ-001 Thr-001 IRQ-002 Thr-002 IRQ-003 Thr-003
0 58572 0 59373 0 58691 0 58895 0
1 1422 57021 628 57241 1310 56160 1102 56805
2 6 2931 0 2695 0 3567 4 3031
3 1 40 0 53 0 260 0 142
4 0 7 0 5 0 6 0 17
5 0 2 0 5 0 7 0 4
6 0 0 0 2 0 1 0 1
8 0 0 0 0 0 0 0 1
over: 0 0 0 0 0 0 0 0
count: 60001 60001 60001 60001 60001 60001 60001 60001
min: 0 1 0 1 0 1 0 1
avg: 0 1 0 1 0 1 0 1
max: 3 5 1 6 1 6 2 8
---------- >% ----------
Running
- rtla timerlat hist --help
provides information about the available options.
Link: https://lkml.kernel.org/r/7049ed3c46b7d6aceab18ffe7770003dfc4ddceb.1639158831.git.bristot@kernel.org
Cc: Tao Zhou <tao.zhou@linux.dev>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Tom Zanussi <zanussi@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: linux-rt-users@vger.kernel.org
Cc: linux-trace-devel@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'tools/tracing/rtla/src/timerlat.h')
| -rw-r--r-- | tools/tracing/rtla/src/timerlat.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/tracing/rtla/src/timerlat.h b/tools/tracing/rtla/src/timerlat.h index 6f9d3925acd0..88561bfd14f3 100644 --- a/tools/tracing/rtla/src/timerlat.h +++ b/tools/tracing/rtla/src/timerlat.h @@ -1,4 +1,4 @@ // SPDX-License-Identifier: GPL-2.0 - +int timerlat_hist_main(int argc, char *argv[]); int timerlat_top_main(int argc, char *argv[]); int timerlat_main(int argc, char *argv[]); |