TOMOYO Linux Cross Reference
Linux/Documentation/tools/rtla/common_options.rst

   **-c**, **--cpus** *cpu-list*
   
           Set the osnoise tracer to run the sample threads in the cpu-list.
   
   **-H**, **--house-keeping** *cpu-list*
   
           Run rtla control threads only on the given cpu-list.
   
   **-d**, **--duration** *time[s|m|h|d]*
  
          Set the duration of the session.
  
  **-D**, **--debug**
  
          Print debug info.
  
  **-e**, **--event** *sys:event*
  
          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.
  
  **--filter** *<filter>*
  
          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.
  
  **--trigger** *<trigger>*
          Enable a trace event trigger to the previous **-e** *sys:event*.
          If the *hist:* trigger is activated, the output histogram will be automatically saved to a file named *system_event_hist.txt*.
          For example, the command:
  
          rtla <command> <mode> -t -e osnoise:irq_noise --trigger="hist:key=desc,duration/1000:sort=desc,duration/1000:vals=hitcount"
  
          Will automatically save the content of the histogram associated to *osnoise:irq_noise* event in *osnoise_irq_noise_hist.txt*.
  
          For further information about event trigger see https://www.kernel.org/doc/html/latest/trace/events.html#event-triggers.
  
  **-P**, **--priority** *o:prio|r:prio|f:prio|d:runtime:period*
  
          Set scheduling parameters to the osnoise tracer threads, the format to set the priority are:
  
          - *o:prio* - use SCHED_OTHER with *prio*;
          - *r:prio* - use SCHED_RR with *prio*;
          - *f:prio* - use SCHED_FIFO with *prio*;
          - *d:runtime[us|ms|s]:period[us|ms|s]* - use SCHED_DEADLINE with *runtime* and *period* in nanoseconds.
  
  **-C**, **--cgroup**\[*=cgroup*]
  
          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.
  
  **--warm-up** *s*
  
          After starting the workload, let it run for *s* seconds before starting collecting the data, allowing the system to warm-up. Statistical data generated during warm-up is discarded.
  
  **--trace-buffer-size** *kB*
          Set the per-cpu trace buffer size in kB for the tracing output.
  
  **-h**, **--help**
  
          Print help menu.

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