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SubjectRe: Oops in sched.c on PPro SMP
From
Am Dienstag den, 17. September 2002, um 19:41, schrieb Andrea Arcangeli:

> On Tue, Sep 17, 2002 at 07:11:52PM +0200, Peter Waechtler wrote:
>> Once I had a machine check exception - sine then I lowered the CPU
>> clock.
>> After the box was running fine with 180MHz I switched to 200MHz
>> (yes, I overclocked the CPUs with 233MHz 2 or 3 years - without
>> problems)
>
> I guess this explain the corruption. Please make sure the cpu are not
> overclocked at all and then try to reproduce. You cannot choose 180mhz
> or 200mhz randomly based on which kernel crashes or not, if the cpu are
> 180mhz ppro you should use 180mhz only, 200mhz will break. It won't
> break so easily as 233mhz, but it will, the timings are strict on smp.
> So please try to reproduce at 180mhz if the cpu should run at 180mhz.
>
> I don't want to sound boring but please next times try if you can
> reproduce on non overclocked hardware before reporting anything to l-k.
>

They are 200MHz PPros. So don't be bored.
To minimize the risk, I underclocked them, eh?

I slowed down memory timings - the box survived one night - but it
would be too early to count on this.

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