From owner-freebsd-current@FreeBSD.ORG Tue Nov 16 14:57:10 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DE3CC16A4CE for ; Tue, 16 Nov 2004 14:57:10 +0000 (GMT) Received: from duchess.speedfactory.net (duchess.speedfactory.net [66.23.201.84]) by mx1.FreeBSD.org (Postfix) with SMTP id 55BD043D1F for ; Tue, 16 Nov 2004 14:57:10 +0000 (GMT) (envelope-from ups@tree.com) Received: (qmail 2239 invoked by uid 89); 16 Nov 2004 14:57:08 -0000 Received: from duchess.speedfactory.net (66.23.201.84) by duchess.speedfactory.net with SMTP; 16 Nov 2004 14:57:08 -0000 Received: (qmail 2167 invoked by uid 89); 16 Nov 2004 14:57:07 -0000 Received: from unknown (HELO palm.tree.com) (66.23.216.49) by duchess.speedfactory.net with SMTP; 16 Nov 2004 14:57:07 -0000 Received: from [127.0.0.1] (localhost.tree.com [127.0.0.1]) by palm.tree.com (8.12.10/8.12.10) with ESMTP id iAGEv55R006158; Tue, 16 Nov 2004 09:57:05 -0500 (EST) (envelope-from ups@tree.com) From: Stephan Uphoff To: Doug White In-Reply-To: <20041115190644.X7416@carver.gumbysoft.com> References: <20041112141930.21592.qmail@web54607.mail.yahoo.com> <1100277911.78635.480.camel@palm.tree.com> <20041115190644.X7416@carver.gumbysoft.com> Content-Type: text/plain Message-Id: <1100617025.2456.27.camel@palm.tree.com> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Tue, 16 Nov 2004 09:57:05 -0500 Content-Transfer-Encoding: 7bit cc: "Ketrien I. Saihr-Kesenchedra" cc: Nik Azim Azam cc: freebsd-current@freebsd.org Subject: Re: number of CPUs and IPI panic X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Nov 2004 14:57:11 -0000 On Mon, 2004-11-15 at 22:10, Doug White wrote: > On Fri, 12 Nov 2004, Stephan Uphoff wrote: > > > On Fri, 2004-11-12 at 09:19, Nik Azim Azam wrote: > > > Win2K Advanced Server works just fine here. > > > > The root cause seems to be a misunderstanding of the interrupt delivery > > and buffering mechanism. The fix may take a few days since it probably > > requires extensive changes to the IPI layer. > > [getting in late on this] > > Tomorrow I will have access to a Dell PowerEdge 6500 (4x500MHz) I can use > to capture info or test patches. Or see if the bug reproduces there in the > first place :) > > rwatson mumbled something about wanting to determine what triggered the > prior IPI that the panic later trips over. I'll have to find a sutiable > place to hide that information... Hopefully we can skip the debugging phase and go directly to the testing phase. However it would be helpful to know if the PowerEdge 6500 encounters any problems without the patch. The feedback I have received so far looks promising: Andy Farkas wrote: >> You can download the patch at: >> http://people.freebsd.org/~ups/ipi4_patch >> >> Any feedback is appreciated. >> >> Stephan >> > I have been hammering the box for the last 4 hours without > a panic. > > Without your patch, I could easily get a panic by boot -s then > fsck. I did this twice (without panic) using your patch. > > Without your patch, I would usually get a panic during make > buildworld -j4. So far with your patch its already done a > buildworld -j8, and its about to finish a buildworld -j4. > (2 buildworld in a row) > > This is good indeed. > > -andyf > > ps. ok to post to list.