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

[John Baldwin]

On Friday 09 July 2004 01:19 pm, Jon Noack wrote:
> On 07/09/04 12:15, John Baldwin wrote:
> > My test machine is not a true SMP machine either, just HTT.  It has been
> > running a -j 256 worldloop overnight with no problems, so I committed a
> > slightly modified version of the patch yesterday.
>
> Did you test with a UP kernel?  After your latest commit I have been
> experiencing regular hard locks on my pre-HTT P4 machine.  Backing out
> rev. 1.114 of sched_ule.c fixes it.  See my previous message (Re:
> FreeBSD keeps hanging......):
> http://docs.freebsd.org/cgi/mid.cgi?40EECC49.3070501

No, it's running an SMP kernel.  I have seen one hard lockup on a UP kernel on 
my laptop when trying to use xmms in KDE while using ULE.

-- 
John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org