Re: Native preemption is the culprit [was Re: today's CURRENT lockups]

From: Gleb Smirnoff <glebius_at_cell.sick.ru>
Date: Tue, 6 Jul 2004 16:14:27 +0400
On Tue, Jul 06, 2004 at 02:12:47PM +0200, Michael L. Hostbaek wrote:
M> > The patch below appears to (brute force) eliminate the crash/hang I'm
M> > experiencing with SCHED_ULE in the post-preemption universe.  However, I
M> > was experiencing it only in the SMP case, not UP, so it could be I'm just
M> > not triggering it timing-wise.  This would be a temporary fix until jhb is
M> > online again post-USENIX to take a look, assuming this works around the
M> > problem for people other than me.
M> 
M> I've been using this patch on my UP machine for 5-6 hours now, without
M> any hangs/crashes.

I have just removed #define PREEMPTION in param/machine.h and rebuilt 
kernel. No problems during working day.

-- 
Totus tuus, Glebius.
GLEBIUS-RIPN GLEB-RIPE
Received on Tue Jul 06 2004 - 10:14:31 UTC

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