From owner-freebsd-current@FreeBSD.ORG Wed Mar 24 13:47:34 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 5539516A4CE for ; Wed, 24 Mar 2004 13:47:34 -0800 (PST) Received: from mail.sandvine.com (sandvine.com [199.243.201.138]) by mx1.FreeBSD.org (Postfix) with ESMTP id EF55243D2F for ; Wed, 24 Mar 2004 13:47:33 -0800 (PST) (envelope-from don@sandvine.com) Received: by mail.sandvine.com with Internet Mail Service (5.5.2657.72) id ; Wed, 24 Mar 2004 16:47:28 -0500 Message-ID: From: Don Bowman To: 'Kris Kennaway' , Don Bowman Date: Wed, 24 Mar 2004 16:47:28 -0500 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-Type: text/plain; charset="iso-8859-1" cc: "'current@freebsd.org'" Subject: RE: LOR on current 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: Wed, 24 Mar 2004 21:47:34 -0000 From: Kris Kennaway [mailto:kris@obsecurity.org] > On Wed, Mar 24, 2004 at 03:23:36PM -0500, Don Bowman wrote: > > > > Right, I think that's not the cause of your lockup :) > > > > Not being one to believe in coincidences... I'm typing > > on the serial console. The machine halts, i can no longer type. > > some seconds pass, out pops that message. This time too it > > returned. Most times (when i run two postgresql vacuums > simulatenously > > for example), that's the end of it. > > > > I will continue to investigate. > > Check for disk problems..I have often experienced hangs or lockups on > machines with faulty disks. 6-disk raid 5 behind ASR. All disks report optimal, controller reports optimal. I know the hangs you mean, from the vm swapin etc which holds all the locks. I don't think this is they. with ahd i would get scsi sense errors in the log for machines with problems [CRC errors etc], i don't have a for what asr does in this case. ran a 96 hour memory test (memtest86), with ecc checking, there were no soft or hard errors. Ran machine to 40 degrees C ambient in environmental chamber, its all good. Its got 3 power supplies, all are operational, fed from UPS. This is a software problem somewhere I think. I'm curious, how many people use ASR with current? It seems like it might be somewhat unloved.