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

[whois wes]

Interesting - we're running FC4, and without IRQ balance, all
interrupts default to the highest numbered CPU (CPU3 with
hyperthreading on, CPU1 with it off...)

i have added an echo statement to our startup scripts that moves the
T1 card to interrupt on CPU0 and it has worked wonderfully for
us...watching /proc/interrupts shows that the digium/sangoma card is
only hitting CPU0 while everything else hits CPU1

we're running a stock FC4 install, kernel 2.6.11.x, FWIW...

On 6/9/06, Colin Anderson <ColinA at landmarkmasterbuilder.com> wrote:
> > 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.