From owner-freebsd-questions@FreeBSD.ORG Tue Aug 3 00:07:40 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6252416A4CE; Tue, 3 Aug 2004 00:07:40 +0000 (GMT) Received: from kira.epconline.net (kira.epconline.net [68.90.68.2]) by mx1.FreeBSD.org (Postfix) with ESMTP id DCA8043D67; Tue, 3 Aug 2004 00:07:39 +0000 (GMT) (envelope-from carock@epconline.com) Received: from kira.epconline.net (localhost [127.0.0.1]) by kira.epconline.net (8.12.11/8.12.10) with ESMTP id i7307Z2t048251; Mon, 2 Aug 2004 19:07:35 -0500 (CDT) (envelope-from carock@epconline.com) Received: from localhost (carock@localhost)i7307ZY7048243; Mon, 2 Aug 2004 19:07:35 -0500 (CDT) (envelope-from carock@epconline.com) X-Authentication-Warning: kira.epconline.net: carock owned process doing -bs Date: Mon, 2 Aug 2004 19:07:35 -0500 (CDT) From: Chuck Rock X-X-Sender: carock@kira.epconline.net To: John Baldwin In-Reply-To: <200408021532.52817.jhb@FreeBSD.org> Message-ID: <20040802190220.B40403@kira.epconline.net> References: <50335.81.84.175.12.1091365736.squirrel@81.84.175.12> <200408021532.52817.jhb@FreeBSD.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: Hugo Silva cc: freebsd-smp@freebsd.org cc: freebsd-questions@freebsd.org Subject: Re: FreeBSD 5.2.1 kernel w/ SMP under high load = panic X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 03 Aug 2004 00:07:40 -0000 I had a similar problem with this release running on any Dell 2550 Rack server I had. I tried three different servers with the same config, and I had kernel panics at various times. All of them had different information on the screen at each panic. I had several people tel lme they had no such problems with the same systems. I chalked it up to bad driver for the PERC3/DC raid controller. All panics seemd to happen under very high disk I/O. The machine would run fine for a few days, then just puke. I moved all the stuff over to a refurb Compaq Dual Xeon 2.8, and have had only one problem lockup in the 5 months I've been running it under increasing loads. The last lockup I had also seemed related to disk I/O. Otherwise, 5.2.1 has been a very stable production server processing over 1 million E-mail's a day incoming and hundred thousand out. Chuck On Mon, 2 Aug 2004, John Baldwin wrote: > On Sunday 01 August 2004 09:08 am, Hugo Silva wrote: > > I am running a Dual Xeon 2.8ghz w/ SMP, SCHED_ULE on FreeBSD > > 5.2.1-RELEASE-p9. > > > > Whenever I load the server a bit more (let seti@home run, compile stuff in > > multiple jails, etc), it will simple go offline. I confirmed with the > > datacenter and it is indeed a panic, but the datacenter didn't give me the > > panic message. I know for *sure* it's because of the high loads. > > Hmm, we'd really need the panic message to even start debugging it. > > > I need to sort this out, this is a powerful server being cut because of > > FreeBSD/SMP, and I know there is a kernel option to prevent the panic, I > > read about it ages ago on a forum. But I can't locate it. That user said > > if he disabled SMP, panics would stop. But another user suggested adding a > > kernel option (which I simply don't remember), and panics stopped, even > > with SMP. > > > > I tried KVA_PAGES=512, but it only caused another panic, this time as soon > > as the system started up.. > > > > syncing disks, buffers remaining... panic: pmap_invalidate_range: > > interrupts disabled > > cpuid = 0; > > boot() called on cpu#0 > > uptime: 9s > > Unfortunately, I'd really need the backtrace to see how to fix this panic. > > -- > John Baldwin <>< http://www.FreeBSD.org/~jhb/ > "Power Users Use the Power to Serve" = http://www.FreeBSD.org > _______________________________________________ > freebsd-smp@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-smp > To unsubscribe, send any mail to "freebsd-smp-unsubscribe@freebsd.org" >