Re: CONFIG_IRQBALANCE for AMD64?

Andi Kleen
2004-05-28T21:50:39Z

"Martin J. Bligh" <mbligh@aracnet.com> writes:

> Whatever we do ... all arches are going to need to provide a way to direct
> interrupts to a certain CPU, or group thereof. Can they all do that already?
> I'll confess to not having looked at non-i386 arches. And are others as
> brain damaged as the P4? or do they do something round-robin by default?

I wouldn't really blame the the P4, it's the IO-APICs in the chipsets
that balance or not balance.

At least the AMD chipsets found in most Opteron boxes need software
balancing too.

-Andi