Documentation/tools/rtla/rtla-osnoise-top.rst
.. |tool| replace:: osnoise top
:Manual section: 1
rtla osnoise top [OPTIONS]
.. include:: common_osnoise_description.txt
rtla osnoise top collects the periodic summary from the osnoise tracer, including the counters of the occurrence of the interference source, displaying the results in a user-friendly format.
The tool also allows many configurations of the osnoise tracer and the collection of the tracer output.
.. include:: common_osnoise_options.txt
.. include:: common_top_options.txt
.. include:: common_options.txt
In the example below, the rtla osnoise top tool is set to run with a real-time priority FIFO:1, on CPUs 0-3, 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 and to display a summary of the report at the end of the session::
[root@f34 ~]# rtla osnoise top -P F:1 -c 0-3 -r 900000 -d 1M -q Operating System Noise duration: 0 00:01:00 | time is in us CPU Period Runtime Noise % CPU Aval Max Noise Max Single HW NMI IRQ Softirq Thread 0 #59 53100000 304896 99.42580 6978 56 549 0 53111 1590 13 1 #59 53100000 338339 99.36282 8092 24 399 0 53130 1448 31 2 #59 53100000 290842 99.45227 6582 39 855 0 53110 1406 12 3 #59 53100000 204935 99.61405 6251 33 290 0 53156 1460 12
rtla-osnoise(1), rtla-osnoise-hist(1)
Osnoise tracer documentation: https://www.kernel.org/doc/html/latest/trace/osnoise-tracer.html
Written by Daniel Bristot de Oliveira [email protected]
.. include:: common_appendix.txt