On Tue, 24 Oct 2000, John Baldwin wrote:

> On 25-Oct-00 Chuck Robey wrote:
> > I'm having rather extreme problems with stability on my dual PIII
> > setup.  I know this is to be expected, but it's gotten so extreme on my
> > system, I can't spend more than a few minutes before it locks up.
> > 
> > Is there any chance that I could make things better by using a sysctl to
> > tell the box it's now a single-cpu system?  I can't read man pages at the
> > moment (I'm composing this on my Sparc Ultra-5) so if this might work, and
> > someone knows the exact command to use, I'd appreciate a bit of help.
> You can use kernel.old to compile a UP kernel.  I always keep a UP kernel
> around just in case.  Also, when did your SMP box become unstable?  There
> was a known problem with SMP boxes when the vm page zero'ing during the idle
> loop was first turned on that has since been fixed with the latest commit to
> vm_machdep.c yesterday.  Symptoms were frequent kernel panic 12's with
> interrupts disabled .

No kernel panics, just lockups.  I saw the startup problems (having to hit
a lot of control-C's to get booted) and I had two kinds of lockup
problems, one a complete machine freeze (still pings, but that's all) and
also a strange one where an entire mounted filesystem would disappear.

I can back up to my kernel.gd I keep around, but I have to get me an older
mountd, netstat, ps (and others) before that older kernel is good, and
it was from before the /boot/kernel thing (I hated that idea, and still
do).  I'm going to try the sysctl route first, see if that works.  I won't
be able to report reliable results until the morning (if it lasts all
night, it's a huge fix).

As it stands now, no way can I do any compiling.


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