Date: Wed, 7 Jul 2004 20:10:49 +0400 From: Gleb Smirnoff <glebius@cell.sick.ru> To: Robert Watson <rwatson@freebsd.org> Cc: John Baldwin <jhb@freebsd.org> Subject: Re: cvs commit: src/sys/kern sched_ule.c Message-ID: <20040707161049.GA75603@cell.sick.ru> In-Reply-To: <Pine.NEB.3.96L.1040707120618.37929B-100000@fledge.watson.org> References: <20040707155348.GC75364@cell.sick.ru> <Pine.NEB.3.96L.1040707120618.37929B-100000@fledge.watson.org>
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On Wed, Jul 07, 2004 at 12:06:34PM -0400, Robert Watson wrote: R> > J> > Modified files: R> > J> > sys/kern sched_ule.c R> > J> > Log: R> > J> > Temporarily disable preemption in SCHED_ULE due to reported panics and R> > J> > hangs due to recent preemption changes. This change appears to remove R> > J> > the panic that I was running into, but at the cost of increasing R> > J> > ithread scheduling latency, and as such is a temporary band-aid until R> > J> > jhb has a chance to resolve the ule<->preemption interaction that is R> > J> > the source of the problem. If it doesn't fix the problem for others-- R> > J> > sorry! R> > J> R> > J> It it just broken on SMP? I actually did the commit from a UP preemption R> > J> kernel using SCHED_ULE from within X11 with KDE, etc. running. R> > R> > it is broken on UP, too. See thread in -current. R> R> An SMP kernel on a UP system, or a UP kernel on a UP system? UP kernel on a UP system -- Totus tuus, Glebius. GLEBIUS-RIPN GLEB-RIPE
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