Hi! Although -rt provides exceptionaly low latencies, i'd like to try out further optimization by dedicating one CPU in a SMP system for real time application ("Shielded CPU"). If applying "isolcpus=1", then most processes will be bound to CPU0 as expected (per CPU kernel threads need to stay), but, interrupts are still distributed amongst CPUs. I tried to modify /proc/irq/*/smp_affinity, but the cpu mask doesn't change for most interrupts. Any ideas what could be the problem? TIA! regards Bernhard - To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html