From owner-cvs-src@FreeBSD.ORG Wed Jul 7 17:10:41 2004 Return-Path: Delivered-To: cvs-src@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3713316A4CE; Wed, 7 Jul 2004 17:10:41 +0000 (GMT) Received: from mailhub.sweetdreamsracing.biz (mailhub.sweetdreamsracing.biz [66.92.171.106]) by mx1.FreeBSD.org (Postfix) with ESMTP id D6DD943D41; Wed, 7 Jul 2004 17:10:40 +0000 (GMT) (envelope-from culverk@sweetdreamsracing.biz) Received: by mailhub.sweetdreamsracing.biz (Postfix, from userid 80) id D5FF110A; Wed, 7 Jul 2004 13:23:41 -0400 (EDT) Received: from 141.156.69.109 ([141.156.69.109]) by www.sweetdreamsracing.biz (Horde) with HTTP for ; Wed, 7 Jul 2004 13:23:41 -0400 Message-ID: <20040707132341.8nkpl1ngg4cw0wwc@www.sweetdreamsracing.biz> Date: Wed, 7 Jul 2004 13:23:41 -0400 From: Kenneth Culver To: Niki Denev References: <20040707155348.GC75364@cell.sick.ru> <20040707161049.GA75603@cell.sick.ru> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format="flowed" Content-Disposition: inline Content-Transfer-Encoding: 7bit User-Agent: Internet Messaging Program (IMP) 4.0-cvs cc: Gleb Smirnoff cc: src-committers@freebsd.org cc: John Baldwin cc: cvs-src@freebsd.org cc: cvs-all@freebsd.org cc: Robert Watson Subject: Re: cvs commit: src/sys/kern sched_ule.c X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Jul 2004 17:10:41 -0000 Quoting Niki Denev : > Gleb Smirnoff writes: > >> 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 > > Well, i'm running UP kernel (and without APIC) on UP machine (Laptop IBM TP > X31), cvsupped on 5-th, 2 days ago. With SCHED_ULE, and i have not > experienced any signs of instability... not a single panic :) > > -- > niki Same here, except I'm running with apic on my x86 install, and I also tried to reproduce this on my amd64 install. Neither one misbehaved at all. Ken