From owner-freebsd-questions@FreeBSD.ORG Thu Apr 19 11:10:49 2007 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 8E17A16A40E for ; Thu, 19 Apr 2007 11:10:49 +0000 (UTC) (envelope-from dzila@tassadar.physics.auth.gr) Received: from tassadar.physics.auth.gr (tassadar.physics.auth.gr [155.207.123.25]) by mx1.freebsd.org (Postfix) with ESMTP id 1525D13C455 for ; Thu, 19 Apr 2007 11:10:48 +0000 (UTC) (envelope-from dzila@tassadar.physics.auth.gr) Received: from tassadar.physics.auth.gr (IDENT:1000@localhost [127.0.0.1]) by tassadar.physics.auth.gr (8.13.7/8.13.6) with ESMTP id l3JAs3ad008117 for ; Thu, 19 Apr 2007 13:54:03 +0300 Received: from localhost (dzila@localhost) by tassadar.physics.auth.gr (8.13.7/8.13.3/Submit) with ESMTP id l3JAs3IG008114 for ; Thu, 19 Apr 2007 13:54:03 +0300 Date: Thu, 19 Apr 2007 13:54:03 +0300 (EEST) From: Dimitris Zilaskos To: freebsd-questions@freebsd.org Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Virus-Scanned: ClamAV 0.88/3125/Wed Apr 18 23:44:38 2007 on tassadar.physics.auth.gr X-Virus-Status: Clean Subject: random hangs/reboots with Dell servers X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 19 Apr 2007 11:10:49 -0000 Dear all, I am trying to understand some long standing issues we have with freebsd and Dell servers. Over the last 3 year we have installed freebsd 5.x and 6.x, with currently deployed version being 6.1, to a variety of of Dell rack mounted systems. The Dell systems used so far are Poweredge 1750, 2950 (both scsi), and sc1425 (sata). All of them are dual CPU Xeon systems. All these systems serve as mail/web servers, with 2 to 15 jails. Installation has always proceeded normally without problems. However, after a few months of operation, all of these systems, purchased at different moments during the last 3 years, will begin rebooting randomly or freezing completely. These reboots/freezes will at first occur once per 6 months, then gradually will move to to once per month, to normally stabilize around once per week, but in the case of the 1750 system once it even happened twice a day. Load does not seem to matter, since even after shutting down all services in the servers, still random reboots occured. So far we tried various tricks digged from the archives, like disabling ACPI, HT, but nothing changed. We have migrated some systems that had these issues to RHEL compatible OS, and they run rock solid under heavy load. Right now I have enabled kernel crash dumps and I am waiting for the next crash. But I understad a lot of people use FreeBSD with Dell servers, and I would like to listen on how to tackle this situation we are facing. Best regards, -- ============================================================================ Dimitris Zilaskos Department of Physics @ Aristotle University of Thessaloniki , Greece PGP key : http://tassadar.physics.auth.gr/~dzila/pgp_public_key.asc http://egnatia.ee.auth.gr/~dzila/pgp_public_key.asc MD5sum : de2bd8f73d545f0e4caf3096894ad83f pgp_public_key.asc ============================================================================