56 lines
2.3 KiB
ReStructuredText
56 lines
2.3 KiB
ReStructuredText
**-c**, **--cpus** *cpu-list*
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Set the osnoise tracer to run the sample threads in the cpu-list.
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**-H**, **--house-keeping** *cpu-list*
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Run rtla control threads only on the given cpu-list.
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**-d**, **--duration** *time[s|m|h|d]*
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Set the duration of the session.
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**-D**, **--debug**
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Print debug info.
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**-t**, **--trace**\[*=file*]
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Save the stopped trace to [*file|osnoise_trace.txt*].
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**-e**, **--event** *sys:event*
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Enable an event in the trace (**-t**) session. The argument can be a specific event, e.g., **-e** *sched:sched_switch*, or all events of a system group, e.g., **-e** *sched*. Multiple **-e** are allowed. It is only active when **-t** or **-a** are set.
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**--filter** *<filter>*
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Filter the previous **-e** *sys:event* event with *<filter>*. For further information about event filtering see https://www.kernel.org/doc/html/latest/trace/events.html#event-filtering.
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**--trigger** *<trigger>*
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Enable a trace event trigger to the previous **-e** *sys:event*.
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If the *hist:* trigger is activated, the output histogram will be automatically saved to a file named *system_event_hist.txt*.
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For example, the command:
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rtla <command> <mode> -t -e osnoise:irq_noise --trigger="hist:key=desc,duration/1000:sort=desc,duration/1000:vals=hitcount"
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Will automatically save the content of the histogram associated to *osnoise:irq_noise* event in *osnoise_irq_noise_hist.txt*.
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For further information about event trigger see https://www.kernel.org/doc/html/latest/trace/events.html#event-triggers.
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**-P**, **--priority** *o:prio|r:prio|f:prio|d:runtime:period*
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Set scheduling parameters to the osnoise tracer threads, the format to set the priority are:
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- *o:prio* - use SCHED_OTHER with *prio*;
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- *r:prio* - use SCHED_RR with *prio*;
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- *f:prio* - use SCHED_FIFO with *prio*;
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- *d:runtime[us|ms|s]:period[us|ms|s]* - use SCHED_DEADLINE with *runtime* and *period* in nanoseconds.
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**-C**, **--cgroup**\[*=cgroup*]
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Set a *cgroup* to the tracer's threads. If the **-C** option is passed without arguments, the tracer's thread will inherit **rtla**'s *cgroup*. Otherwise, the threads will be placed on the *cgroup* passed to the option.
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**-h**, **--help**
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Print help menu.
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