1.. |tool| replace:: osnoise top 2 3=================== 4rtla-osnoise-top 5=================== 6----------------------------------------------- 7Display a summary of the operating system noise 8----------------------------------------------- 9 10:Manual section: 1 11 12SYNOPSIS 13======== 14**rtla osnoise top** [*OPTIONS*] 15 16DESCRIPTION 17=========== 18.. include:: common_osnoise_description.rst 19 20**rtla osnoise top** collects the periodic summary from the *osnoise* tracer, 21including the counters of the occurrence of the interference source, 22displaying the results in a user-friendly format. 23 24The tool also allows many configurations of the *osnoise* tracer and the 25collection of the tracer output. 26 27OPTIONS 28======= 29.. include:: common_osnoise_options.rst 30 31.. include:: common_top_options.rst 32 33.. include:: common_options.rst 34 35EXAMPLE 36======= 37In the example below, the **rtla osnoise top** tool is set to run with a 38real-time priority *FIFO:1*, on CPUs *0-3*, for *900ms* at each period 39(*1s* by default). The reason for reducing the runtime is to avoid starving 40the rtla tool. The tool is also set to run for *one minute* and to display 41a summary of the report at the end of the session:: 42 43 [root@f34 ~]# rtla osnoise top -P F:1 -c 0-3 -r 900000 -d 1M -q 44 Operating System Noise 45 duration: 0 00:01:00 | time is in us 46 CPU Period Runtime Noise % CPU Aval Max Noise Max Single HW NMI IRQ Softirq Thread 47 0 #59 53100000 304896 99.42580 6978 56 549 0 53111 1590 13 48 1 #59 53100000 338339 99.36282 8092 24 399 0 53130 1448 31 49 2 #59 53100000 290842 99.45227 6582 39 855 0 53110 1406 12 50 3 #59 53100000 204935 99.61405 6251 33 290 0 53156 1460 12 51 52SEE ALSO 53======== 54 55**rtla-osnoise**\(1), **rtla-osnoise-hist**\(1) 56 57Osnoise tracer documentation: <https://www.kernel.org/doc/html/latest/trace/osnoise-tracer.html> 58 59AUTHOR 60====== 61Written by Daniel Bristot de Oliveira <bristot@kernel.org> 62 63.. include:: common_appendix.rst 64