29 lines
967 B
ReStructuredText
29 lines
967 B
ReStructuredText
**-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.
|
|
|
|
**--dma-latency** *us*
|
|
Set the /dev/cpu_dma_latency to *us*, aiming to bound exit from idle latencies.
|
|
*cyclictest* sets this value to *0* by default, use **--dma-latency** *0* to have
|
|
similar results.
|