Re: 2.5.37 lockup with dbench 36 and make -j3 bzImage and PREEMPT=y.

From: Steven Cole (
Date: Mon Sep 23 2002 - 11:09:30 EST

On Sat, 2002-09-21 at 04:05, Helge Hafting wrote:
> On 2002.09.20 23:05 Steven Cole wrote:
> > While running 2.5.37 with 36 dbench clients and doing a kernel compile
> > with make -j3 bzImage, my test machine locked up.
> 2.5.36 SMP no preempt locks up under similiar circumstances - a compile
> with make -j 3 and moderate disk activity on 2 scsi disks makes it
> freeze solid now and then. Perhaps this is some sort of SMP problem
> also exposed by preempt?
> I haven't tested this in 2.5.37 because refuses to run X.
> Helge Hafting

Further testing with 2.5.37 over the weekend showed that the lockup also
occurred without preempt here too.

This seems to have been fixed in 2.5.38-mm2. I've run up to dbench 128
while doing several kernel compiles with make -j3 with PREEMPT enabled,
and have not observed any lockups at all.


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