From owner-freebsd-stable@FreeBSD.ORG Tue Jun 28 19:22:23 2005 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8A6A316A41C for ; Tue, 28 Jun 2005 19:22:23 +0000 (GMT) (envelope-from gmulder@infotechfl.com) Received: from pigeon.infotechfl.com (mailrelay.infotechfl.com [209.251.147.6]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0C02A43D1F for ; Tue, 28 Jun 2005 19:22:21 +0000 (GMT) (envelope-from gmulder@infotechfl.com) Received: from [172.20.0.75] (gmulder.infotechfl.com [172.20.0.75]) by pigeon.infotechfl.com (8.11.6/8.11.6) with ESMTP id j5SJMK010581; Tue, 28 Jun 2005 15:22:20 -0400 Message-ID: <42C1A39F.9020300@infotechfl.com> Date: Tue, 28 Jun 2005 15:23:11 -0400 From: Gary Mu1der User-Agent: Mozilla Thunderbird 1.0.2 (Windows/20050317) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Matt Juszczak References: <20050628134702.V72689@neptune.atopia.net> <20050628140156.V73029@neptune.atopia.net> <42C19737.4020608@infotechfl.com> <20050628143404.R73947@neptune.atopia.net> In-Reply-To: <20050628143404.R73947@neptune.atopia.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-stable@freebsd.org Subject: Re: FreeBSD -STABLE servers repeatedly crashing X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 28 Jun 2005 19:22:23 -0000 > Gary, > > Do you know what the chances are that this problem I'm experiencing > is SMP related? I don't mind turning off SMP, and I guess I could > for now to see if that runs stable. Otherwise, I think we're going > to switch to OpenBSD, because these crashes are occuring so > frequently (twice a day)... and as far as the patch and regression > testing, if someone sent me a patch right now I would put it on the > server, because the server already crashes daily, so a faulty patch > wouldn't change much :-(. > > I appreciate your response. I'm going to do a little more research > today before i make my decision on a platform switch. Only way to find out is to try. You could build and install the non-SMP kernel and reboot when you can, or let it boot the new kernel next time the system(s) crash. A lot of the issues seem to be SMP-related. I really loaded up a GENERIC 5.4 kernel and wasn't able to get it to panic. What do you have to lose at this point? I would suggest that before committing to OpenBSD you verify that all the hardware/software you have/use is supported under OpenBSD: http://www.daemonnews.org/200104/bsd_family.html http://www.monkey.org/openbsd/archive/misc/0311/msg01803.html As an example: I'm fairly sure OpenBSD has recently dropped (or will drop) support for the Adaptec aac driver as Theo is not happy with Adaptec's response to his queries for interface specs. From what I've head (YMMV) OpenSBD SMP support is not very optimal, possibly because it is likely that it was implemented extremely conservatively. OpenBSD MySQL with two CPUs can be slower than with one: http://software.newsforge.com/article.pl?sid=04/12/27/1243207&from=rss Gary ps. it is a case of: cost, speed, reliability - choose any two.