[Asterisk-Users] Re: Audio problems on Zap & SIP, local netwo rk, not IRQ related?

[Colin Anderson]

> On further investigation, the SMP affinity on ALL of the IRQs is set to
> 00000001. This implies that everything is handled by CPU0, which it
clearly
> is not!
>
> I'll do some more research on this but in the meantime if anyone has any
> advice on this issue I would appreciate it.

There is a kernel bug in Fedora flavors < 2.6.15 that prevents SMP affinity
from being set. Sorry, don't have the link right now but bugs.redhat.com
should have it.