From owner-svn-src-all@FreeBSD.ORG Fri Sep 24 20:29:21 2010 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A36BC1065679 for ; Fri, 24 Sep 2010 20:29:21 +0000 (UTC) (envelope-from dougb@FreeBSD.org) Received: from mail2.fluidhosting.com (mx21.fluidhosting.com [204.14.89.4]) by mx1.freebsd.org (Postfix) with ESMTP id 2BF7A8FC1F for ; Fri, 24 Sep 2010 20:29:20 +0000 (UTC) Received: (qmail 7118 invoked by uid 399); 24 Sep 2010 20:29:19 -0000 Received: from localhost (HELO ?192.168.0.142?) (dougb@dougbarton.us@127.0.0.1) by localhost with ESMTPAM; 24 Sep 2010 20:29:19 -0000 X-Originating-IP: 127.0.0.1 X-Sender: dougb@dougbarton.us Message-ID: <4C9D0A1F.7050804@FreeBSD.org> Date: Fri, 24 Sep 2010 13:29:19 -0700 From: Doug Barton Organization: http://SupersetSolutions.com/ User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.9) Gecko/20100915 Thunderbird/3.1.4 MIME-Version: 1.0 To: John Baldwin References: <20100922222441.00002f27@unknown> <20100923.203143.19192035494300157.imp@bsdimp.com> <1285297884.17619.17.camel@neo.cse.buffalo.edu> <201009240923.04406.jhb@freebsd.org> In-Reply-To: <201009240923.04406.jhb@freebsd.org> X-Enigmail-Version: 1.2a1pre OpenPGP: id=1A1ABC84 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: bruce@cran.org.uk, src-committers@freebsd.org, Ken Smith , svn-src-all@freebsd.org, avg@freebsd.org, gavin@freebsd.org, svn-src-head@freebsd.org, "M. Warner Losh" Subject: Re: svn commit: r212964 - head/sys/kern X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Sep 2010 20:29:21 -0000 On 9/24/2010 6:23 AM, John Baldwin wrote: > The biggest argument against this (and the reason I always enable crashdumps > on all machines I am involved with) is that many panics are not easily > reproducible, esp. ones that trigger under load. If dumpdev is not on by > default, then the info from a rare or hard-to-trigger bug may simply be lost. > Also, "just send-pr or mail the 'foo' file" is even simpler than "enable this > knob in rc.conf and reproduce your issue, then come back". I agree with John, and the others who have expressed similar sentiments. All of the technical problems that prevent this have solutions, particularly if Y! is willing to donate the patch that prevents multiple dumps from filling the disk. FWIW, Doug -- ... and that's just a little bit of history repeating. -- Propellerheads Improve the effectiveness of your Internet presence with a domain name makeover! http://SupersetSolutions.com/