-c, –cpus cpu-list
Set the osnoise tracer to run the sample threads in the cpu-list.
-d, –duration time[s|m|h|d]
Set the duration of the session.
-D, –debug
Print debug info.
-t, –trace[=file]
Save the stopped trace to [file|osnoise_trace.txt].
-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.
-h, –help
Print help menu.