67 lines
3.0 KiB
ReStructuredText
67 lines
3.0 KiB
ReStructuredText
|
===================
|
||
|
|
rtla-osnoise-hist
|
||
|
|
===================
|
||
|
|
------------------------------------------------------
|
||
|
|
Display a histogram of the osnoise tracer samples
|
||
|
|
------------------------------------------------------
|
||
|
|
|
||
|
|
:Manual section: 1
|
||
|
|
|
||
|
|
SYNOPSIS
|
||
|
|
========
|
||
|
|
**rtla osnoise hist** [*OPTIONS*]
|
||
|
|
|
||
|
|
DESCRIPTION
|
||
|
|
===========
|
||
|
|
.. include:: common_osnoise_description.rst
|
||
|
|
|
||
|
|
The **rtla osnoise hist** tool collects all **osnoise:sample_threshold**
|
||
|
|
occurrence in a histogram, displaying the results in a user-friendly way.
|
||
|
|
The tool also allows many configurations of the *osnoise* tracer and the
|
||
|
|
collection of the tracer output.
|
||
|
|
|
||
|
|
OPTIONS
|
||
|
|
=======
|
||
|
|
.. include:: common_osnoise_options.rst
|
||
|
|
|
||
|
|
.. include:: common_hist_options.rst
|
||
|
|
|
||
|
|
.. include:: common_options.rst
|
||
|
|
|
||
|
|
EXAMPLE
|
||
|
|
=======
|
||
|
|
In the example below, *osnoise* tracer threads are set to run with real-time
|
||
|
|
priority *FIFO:1*, on CPUs *0-11*, for *900ms* at each period (*1s* by
|
||
|
|
default). The reason for reducing the runtime is to avoid starving the
|
||
|
|
**rtla** tool. The tool is also set to run for *one minute*. The output
|
||
|
|
histogram is set to group outputs in buckets of *10us* and *25* entries::
|
||
|
|
|
||
|
|
[root@f34 ~/]# rtla osnoise hist -P F:1 -c 0-11 -r 900000 -d 1M -b 10 -E 25
|
||
|
|
# RTLA osnoise histogram
|
||
|
|
# Time unit is microseconds (us)
|
||
|
|
# Duration: 0 00:01:00
|
||
|
|
Index CPU-000 CPU-001 CPU-002 CPU-003 CPU-004 CPU-005 CPU-006 CPU-007 CPU-008 CPU-009 CPU-010 CPU-011
|
||
|
|
0 42982 46287 51779 53740 52024 44817 49898 36500 50408 50128 49523 52377
|
||
|
|
10 12224 8356 2912 878 2667 10155 4573 18894 4214 4836 5708 2413
|
||
|
|
20 8 5 12 2 13 24 20 41 29 53 39 39
|
||
|
|
30 1 1 0 0 10 3 6 19 15 31 30 38
|
||
|
|
40 0 0 0 0 0 4 2 7 2 3 8 11
|
||
|
|
50 0 0 0 0 0 0 0 0 0 1 1 2
|
||
|
|
over: 0 0 0 0 0 0 0 0 0 0 0 0
|
||
|
|
count: 55215 54649 54703 54620 54714 55003 54499 55461 54668 55052 55309 54880
|
||
|
|
min: 0 0 0 0 0 0 0 0 0 0 0 0
|
||
|
|
avg: 0 0 0 0 0 0 0 0 0 0 0 0
|
||
|
|
max: 30 30 20 20 30 40 40 40 40 50 50 50
|
||
|
|
|
||
|
|
SEE ALSO
|
||
|
|
========
|
||
|
|
**rtla-osnoise**\(1), **rtla-osnoise-top**\(1)
|
||
|
|
|
||
|
|
*osnoise* tracer documentation: <https://www.kernel.org/doc/html/latest/trace/osnoise-tracer.html>
|
||
|
|
|
||
|
|
AUTHOR
|
||
|
|
======
|
||
|
|
Written by Daniel Bristot de Oliveira <bristot@kernel.org>
|
||
|
|
|
||
|
|
.. include:: common_appendix.rst
|