Jan Kiszka wrote: > There is a shadow relax procedure running before the timer IRQ fires, > and that takes another context switch. So the latency sum is: > > - unrelated context switch > - timer IRQ > - switch to woken up RT process > - serial IRQ > > Almost the theoretical worst case.
The problem is that it does not happen when launching latency with -t 1 or -t 2, or if latency is not run in the background. Anyway, I will investigate on the double ack issue, because it could mean that there is a double EOI, which, I guess could cause some troubles at interrupt controller level. -- Gilles Chanteperdrix. _______________________________________________ Xenomai-core mailing list Xenomaiemail@example.com https://mail.gna.org/listinfo/xenomai-core