brintos

brintos / linux-shallow public Read only

0
0
Text · 2.5 KiB · 2dc1575 Raw
59 lines · plain
1**-c**, **--cpus** *cpu-list*2 3        Set the osnoise tracer to run the sample threads in the cpu-list.4 5**-H**, **--house-keeping** *cpu-list*6 7        Run rtla control threads only on the given cpu-list.8 9**-d**, **--duration** *time[s|m|h|d]*10 11        Set the duration of the session.12 13**-D**, **--debug**14 15        Print debug info.16 17**-e**, **--event** *sys:event*18 19        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.20 21**--filter** *<filter>*22 23        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.24 25**--trigger** *<trigger>*26        Enable a trace event trigger to the previous **-e** *sys:event*.27        If the *hist:* trigger is activated, the output histogram will be automatically saved to a file named *system_event_hist.txt*.28        For example, the command:29 30        rtla <command> <mode> -t -e osnoise:irq_noise --trigger="hist:key=desc,duration/1000:sort=desc,duration/1000:vals=hitcount"31 32        Will automatically save the content of the histogram associated to *osnoise:irq_noise* event in *osnoise_irq_noise_hist.txt*.33 34        For further information about event trigger see https://www.kernel.org/doc/html/latest/trace/events.html#event-triggers.35 36**-P**, **--priority** *o:prio|r:prio|f:prio|d:runtime:period*37 38        Set scheduling parameters to the osnoise tracer threads, the format to set the priority are:39 40        - *o:prio* - use SCHED_OTHER with *prio*;41        - *r:prio* - use SCHED_RR with *prio*;42        - *f:prio* - use SCHED_FIFO with *prio*;43        - *d:runtime[us|ms|s]:period[us|ms|s]* - use SCHED_DEADLINE with *runtime* and *period* in nanoseconds.44 45**-C**, **--cgroup**\[*=cgroup*]46 47        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.48 49**--warm-up** *s*50 51        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.52 53**--trace-buffer-size** *kB*54        Set the per-cpu trace buffer size in kB for the tracing output.55 56**-h**, **--help**57 58        Print help menu.59