Date: Tue, 20 Jul 2004 12:56:43 -0700 From: "Kevin Oberman" <oberman@es.net> To: Scott Long <scottl@samsco.org> Cc: Scott Long <scottl@freebsd.org> Subject: Re: HEADS UP [Re: thread+preemption stability improvement] Message-ID: <20040720195643.89CA85D08@ptavv.es.net> In-Reply-To: Your message of "Tue, 20 Jul 2004 13:13:48 MDT." <40FD6EEC.3030900@samsco.org>
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> Date: Tue, 20 Jul 2004 13:13:48 -0600 > From: Scott Long <scottl@samsco.org> > > Kevin Oberman wrote: > > I just rebuilt my kernel and the problem is back. :-( > > > > I sure hope peter or Scott can figure this out soon. The kernel has now > > changed enough that backing off the 4 files I was backing off is no > > longer adequate, so I am again running with preemption turned off. > > > > System is P4-M 1.8 GHz UP with SCHED_ULE. It reliably dies on a > > buildworld. > > Does it work better if you remove the PREEMPTION define in > /sys/i386/include/param.h? Scott, That's how I built my current kernel and it's at least fairly painful It does not freeze any longer, but the interactivity is poor. I'm not sure if it's as bad as last time I tried, but my editor freezes for seconds at a time and then catches up once something gets scheduled. (I think it's the X server and not the editor that is the issue.) It's better than the freezes, but it's pretty painful. I can provide configs, logs (nothing there, though) or any other information. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634
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