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SubjectRe: Dual XEON - >>SLOW<< on SMP
On Thu, 2 Nov 2000 kernel@kvack.org wrote:

> On Thu, 2 Nov 2000, Dr. David Gilbert wrote:
>
> > I've included /proc/pci, /proc/interrupt /proc/cpuinfo and the kernel
> > config (2.4.0-test10).
>
> > CONFIG_MTRR=y
>
> I bet it's the mtrr bugs. Take a look in /proc/mtrr. Someone suggested
> that if you disable the cachable settings in the BIOS for the BIOS/VGA/ROM
> regions, the bug can be avoided.
>
> -ben

Yes. Look at the NMI count. Looks like every access produces a
NMI.

Cheers,
Dick Johnson

Penguin : Linux version 2.2.17 on an i686 machine (801.18 BogoMips).

"Memory is like gasoline. You use it up when you are running. Of
course you get it all back when you reboot..."; Actual explanation
obtained from the Micro$oft help desk.


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