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

[Jon Noack]

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

Jon