Re: IRQ affinity vs. MTRRs, was Re: 36 bit MTRRs, Re: test10-pre1problems on 4-way SuperServer8050

[James Simmons]

> > every CPU to avoid slowdowns. So that if you set that eth0's
> > IRQ will be handled by CPU1, the MTRRs of CPU1 will be set
> > accordingly, and the other CPUs will not care about eth0,
> > so they do not need eth0's MTRR settings.
> 
> A little question. Why do we want to bind irq of eth0 to a single CPU ?
> imho it will casue slowdown of some situation. Why don't we leave scheduler
> to select CPU for processing IRQ ?

This would be really horrible for video cards. X would come to a crawl :-(

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