0001 **-a**, **--auto** *us*
0002
0003 Set the automatic trace mode. This mode sets some commonly used options
0004 while debugging the system. It is equivalent to use **-T** *us* **-s** *us*
0005 **-t**. By default, *timerlat* tracer uses FIFO:95 for *timerlat* threads,
0006 thus equilavent to **-P** *f:95*.
0007
0008 **-p**, **--period** *us*
0009
0010 Set the *timerlat* tracer period in microseconds.
0011
0012 **-i**, **--irq** *us*
0013
0014 Stop trace if the *IRQ* latency is higher than the argument in us.
0015
0016 **-T**, **--thread** *us*
0017
0018 Stop trace if the *Thread* latency is higher than the argument in us.
0019
0020 **-s**, **--stack** *us*
0021
0022 Save the stack trace at the *IRQ* if a *Thread* latency is higher than the
0023 argument in us.
0024
0025 **--dma-latency** *us*
0026 Set the /dev/cpu_dma_latency to *us*, aiming to bound exit from idle latencies.
0027 *cyclictest* sets this value to *0* by default, use **--dma-latency** *0* to have
0028 similar results.
