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SubjectRe: [patch] voluntary-preempt-2.6.8.1-P0
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On Sun, 2004-08-15 at 13:33 -0400, Lee Revell wrote:
> On Sun, 2004-08-15 at 10:01, Peter Zijlstra wrote:
>
> > It still locks up hard for me when voluntary-preempt=3, however it does
> > finish the boot; dmesg attached. The lockup occurs several minutes into
> > use; usually by by the time I've started X, launched evolution and
> > selected my first imap folder the machine's dead.
> >
> > If you need more information or want me to try some patches, just let me
> > know.
>
> These look a bit worrisome:
>
> Aug 15 15:24:11 twins kernel: Total of 2 processors activated (5537.79 BogoMIPS).
> Aug 15 15:24:11 twins kernel: WARNING: This combination of AMD processors is not suitable for SMP.
> Aug 15 15:24:11 twins kernel: ENABLING IO-APIC IRQs
>
> Aug 15 15:24:11 twins kernel: I/O APIC: AMD Errata #22 may be present. In the event of instability try
> Aug 15 15:24:11 twins kernel: : booting with the "noapic" option.
>

Yeah, true. I run with 2 Thunderbirds, not Athlon MPs; AMD does not like
that, the CPUs don't share that inclination.

As for the AMD Errata #22, all other kernels run rock solid without
noapic, so I don't see why these should differ. I did try noapic though,
not on P0 but on one of the later Os.


--
Peter Zijlstra <a.p.zijlstra@chello.nl>

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