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