Messages in this thread |  | | | Date | Sat, 13 Mar 1999 18:50:07 +0100 (CET) | | From | Ingo Molnar <> | | Subject | Re: [patch] kstat change to see how much Linux SMP really scale well |
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On Sat, 13 Mar 1999, Andi Kleen wrote:
> > this is a non-issue, really. It simply does not happen. I've profiled a > > slow and old dual-P100 for hours under heavy load and i never got a lost > > SMP timer interrupt. > > I think it depends on the drivers. I assume your old P100 didn't have a > polling SCSI controller that disabled local interrupts with the > iorequest spinlock for ages.
actually it had such a beast, the biggest delay i saw was 1-2 msecs, typically it was 100-500 usecs.
-- mingo
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