On Tue, 2002-08-13 at 20:22, Linus Torvalds wrote:
>
> On Tue, 13 Aug 2002, Martin J. Bligh wrote:
> >
> > OK, I was being unclear, that's not really what I meant. If I may rephrase:
> > I don't like the performance hit it gives on P3 standard SMP machines (not
> > NUMA-Q) though it does work on there too, and there's no easy way for
> > people to disable it.
>
> Well, it makes performance _so_ much better on a P4 that it's not even
> funny. It's basically a "P4 is unusable with SMP" without it.
On a collection of networking workloads the P4 is about 5% better
performing with the irq balancer off.
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