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- .. |tool| replace:: osnoise top
- ===================
- rtla-osnoise-top
- ===================
- -----------------------------------------------
- Display a summary of the operating system noise
- -----------------------------------------------
- :Manual section: 1
- SYNOPSIS
- ========
- **rtla osnoise top** [*OPTIONS*]
- DESCRIPTION
- ===========
- .. 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.
- OPTIONS
- =======
- .. include:: common_osnoise_options.txt
- .. include:: common_top_options.txt
- .. include:: common_options.txt
- EXAMPLE
- =======
- 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
- SEE ALSO
- ========
- **rtla-osnoise**\(1), **rtla-osnoise-hist**\(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.txt
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