Messages in this thread | | | Date | Fri, 3 Mar 2000 12:15:15 +0100 (CET) | From | Ingo Molnar <> | Subject | Re: new IRQ scalability changes in 2.3.48 |
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On Thu, 2 Mar 2000, Andrea Arcangeli wrote:
> Agreed ;). OTOH there's a minor pros with such SMP irq design that we are > forced to use: we kill irq latency best. IO-APIC AFIK chooses the CPU that > is handling the lower bus load at irq time, but it doesn't choose the CPU > that has irq enabled AFIK.
incorrect, it does.
> "From all processors listed in the destination, the processor > selected is the one whose current arbitration priority is the > lowest."
check out the 'focus CPU' feature.
-- mingo
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