From owner-freebsd-questions@FreeBSD.ORG Tue Aug 3 08:09:12 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 86B5916A4CE; Tue, 3 Aug 2004 08:09:12 +0000 (GMT) Received: from www.wcborstel.nl (wcborstel.demon.nl [82.161.134.53]) by mx1.FreeBSD.org (Postfix) with ESMTP id AC8CD43D68; Tue, 3 Aug 2004 08:09:09 +0000 (GMT) (envelope-from jorn@wcborstel.nl) Received: from localhost (localhost.chello.nl [127.0.0.1]) by www.wcborstel.nl (Postfix) with ESMTP id DA456813A; Tue, 3 Aug 2004 10:10:36 +0200 (CEST) Received: from www.wcborstel.nl ([127.0.0.1]) by localhost (www.wcborstel.nl [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 46267-01; Tue, 3 Aug 2004 10:10:36 +0200 (CEST) Received: from [192.168.2.110] (unknown [192.168.2.110]) by www.wcborstel.nl (Postfix) with ESMTP id 5FDEC80B3; Tue, 3 Aug 2004 10:10:36 +0200 (CEST) From: Jorn Argelo To: freebsd-questions@freebsd.org Date: Tue, 3 Aug 2004 10:08:43 +0200 User-Agent: KMail/1.6.2 References: <50335.81.84.175.12.1091365736.squirrel@81.84.175.12> <200408021532.52817.jhb@FreeBSD.org> <20040802190220.B40403@kira.epconline.net> In-Reply-To: <20040802190220.B40403@kira.epconline.net> MIME-Version: 1.0 Content-Disposition: inline Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message-Id: <200408031009.20022.jorn@wcborstel.nl> X-Virus-Scanned: by amavisd-new at mail.domain.tld cc: freebsd-smp@freebsd.org cc: Hugo Silva cc: Chuck Rock cc: John Baldwin 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 08:09:12 -0000 =2D----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Tuesday 03 August 2004 02:07, Chuck Rock wrote: > 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 > During my traineeship we had an PowerEdge 2650 (Dual Xeon with FreeBSD 5.1 = at=20 that time). The machine had quite high loads (8.00 - 11.00, which was 24/7)= ,=20 but it kept working most times. Sometimes after a few days or weeks it=20 resulted in a panic. My mentor (who was the Unix specialist) said that it w= as=20 probably been caused by the RAID controller as well. It was a PERC2/DC or=20 PERC3/DC, not really sure. I think it's the latter. Anyway, when 5.2 came=20 out, my mentor immediately upgraded to 5.2, and the machine became rock=20 solid, even with very high loads. It was a monitoring machine, which=20 collected over 1600 SMNP requests from every server, so I'm not really sure= =20 if that produces an high disk I/O or not.=20 Perhaps the story is not interesting, but I felt like sharing that. Cheers, Jorn =2D----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQFBD0gQs2lBCry7iusRAozeAJ9ID3yBuNSui9EU7tuLJaPZcOc67wCfT7UQ LB+IWXbsYiQQZNs/2CJYz64=3D =3Dr1AQ =2D----END PGP SIGNATURE-----