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**-a**, **--auto** *us*
Set the automatic trace mode. This mode sets some commonly used options
while debugging the system. It is equivalent to use **-T** *us* **-s** *us*
**-t**. By default, *timerlat* tracer uses FIFO:95 for *timerlat* threads,
thus equilavent to **-P** *f:95*.
**-p**, **--period** *us*
Set the *timerlat* tracer period in microseconds.
**-i**, **--irq** *us*
Stop trace if the *IRQ* latency is higher than the argument in us.
**-T**, **--thread** *us*
Stop trace if the *Thread* latency is higher than the argument in us.
**-s**, **--stack** *us*
Save the stack trace at the *IRQ* if a *Thread* latency is higher than the
argument in us.
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