Gilles Chanteperdrix wrote: > Jan Kiszka wrote: >> Perrine Martignoni wrote: >> >>> Ok. I'll do this. >>> >>> But I don't understand why the same application compiled without any links >>> with Xenomai give different results if there is Xenomai in the kernel. >> >> [Looking at your numbers again] Hmm, maybe some rounding issue of ticks >> due to whatever side-effect of I-pipe. We would first of all need the >> usual set of information (.config, involved versions) and also >> /sys/devices/system/clocksource/clocksource0/current_clocksource. > > Maybe what Perrine is observing is simply the overhead of the I-pipe ? > I mean, Linux is Xenomai idle task, so it is acceptable for Linux > numbers to be a bit worse than when Xenomai is not running.
I bit worse is expected. But I think we are seeing 1 or 2 ticks wake-up delays here. As far as I understood, they are not due to Xenomai consuming significant cycles in the background, are they, Perrine? Jan
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