08.01.2014 02:58, Tim Sander пишет: > Yeah 118 µs should be the right ballpark, while still a little high for my > taste. All cortex a8 seem to have rather high latency. The A9's seem much > better in this respect. On my Intel Atom D425, latency around 25-30 µs (but peaks upto 5000 µs :/ ) > > Have you seen the following: > https://www.osadl.org/Realtime-Preempt-Kernel.kernel-rt.0.html#latencyfighting > > Cyclictest has tracing support which might help finding the cause of the long > latency. > -- Pavel.
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