Bill Jonas on Wed, 5 Jun 2002 15:38:24 -0400


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Re: [PLUG] AMD or Intel P4??


On Wed, Jun 05, 2002 at 02:53:31PM -0400, Kevin Brosius wrote:
> Aaah, is that why turning off APIC in my bios improves things?  What's
> the symptom?

A little background: For the first several releases of 2.4, I couldn't
get one to work on my T-bird (symptoms in a moment).  Turns out that
when I disabled "Local APIC support on uniprocessors", it worked fine.
This surprised me greatly since the help for this says, "If you say Y
here even though your machine doesn't have a local APIC, then the kernel
will still run with no slowdown at all."

As for the symptoms I experienced, random processes were causing kernel
panics/oopses with great frequency, and the system was unusable because
of this; also, the system would fairly quickly hang on one of the
oopses, and I do mean lock up hard.

I experienced this also while installing some version of RedHat (7.2, I
think).  I don't *quite* remember, but I think that adding the
aforementioned 'noathlon' to the kernel command line ("append=" in lilo,
or the "kernel" line in grub) took care of the problem.

-- 
Bill Jonas    *    bill@billjonas.com    *    http://www.billjonas.com/
"They that can give up  essential  liberty to obtain a little temporary
safety deserve neither liberty nor safety."        -- Benjamin Franklin

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