On Tue, 7 Aug 2001, Terry Lambert wrote:
> Matt Dillon wrote:
> > All the cpu's don't get the interrupt, only one does.
>
> I think that you will end up taking an IPI (Inter Processor
> Interrupt) to shoot down the cache line during an invalidate
> cycle, when moving an interrupt processing thread from one
> CPU to another.
You have a lot of fantasy today. You may want to consider
reading one of the white papers you referred us to with so
much enthusiasm and trying again later ;)
> > Well, if you happen to have four NICs and four CPUs, and
> > you are running them all full bore, I would say that
> > wiring the NICs to the CPUs would be a good idea. That
> > seems like a rather specialized situation, though.
>
> I don't think so. These days, interrupt overhead can come
> from many places,
Exactly. You never know where your interrupts come from, so
wiring them in a fixed setup really isn't going to do you
much good in the generic case.
Now if you want to optimise your source code for something
like a Mindcraft "benchmark" ...
regards,
Rik
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