> > I am aware of this. For the current machine I will stick to this.
> >
>
> Then don't complain. :)
Yes sir!
:)
Not complaining really, I think and I hope that the latency of 30us
average will do nicely for me. Just curious actually.

> > to be give worse latencies than much slower machines. Are the 2
> > interrupts causing the latency?
>
> Those two increase the latency of code in timed tasks, for sure. The
> question is if your measurement on the slower machine also included this
> scenario (timer event + 2 IRQs in a row). This definitely doesn't happen
> often, and maybe timing on the slower box makes it less likely. Or there
> is one potential IRQ source more on your fast box (e.g. due to IRQ
> sharing on the slower one).
>
> You see, RT system design on the edge (ie. when hunting a few 10 us) is
> tricky and not easily portable from box X to box Y.

Its not possible to determine which IRQ's are responsible for this
from the trace I presume?


Roland
>
> Jan
>
>
>

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