From owner-svn-src-all@FreeBSD.ORG Mon Sep 27 15:49:37 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 2F60E1065670; Mon, 27 Sep 2010 15:49:37 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from cyrus.watson.org (cyrus.watson.org [65.122.17.42]) by mx1.freebsd.org (Postfix) with ESMTP id F17888FC16; Mon, 27 Sep 2010 15:49:36 +0000 (UTC) Received: from bigwig.baldwin.cx (66.111.2.69.static.nyinternet.net [66.111.2.69]) by cyrus.watson.org (Postfix) with ESMTPSA id 8178746B81; Mon, 27 Sep 2010 11:49:36 -0400 (EDT) Received: from jhbbsd.localnet (smtp.hudson-trading.com [209.249.190.9]) by bigwig.baldwin.cx (Postfix) with ESMTPSA id BB8E38A04E; Mon, 27 Sep 2010 11:49:34 -0400 (EDT) From: John Baldwin To: freebsd-arch@freebsd.org Date: Mon, 27 Sep 2010 09:28:47 -0400 User-Agent: KMail/1.13.5 (FreeBSD/7.3-CBSD-20100819; KDE/4.4.5; amd64; ; ) References: <201009211507.o8LF7iVv097676@svn.freebsd.org> <20100924225352.GD49476@server.vk2pj.dyndns.org> In-Reply-To: <20100924225352.GD49476@server.vk2pj.dyndns.org> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Message-Id: <201009270928.47232.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.0.1 (bigwig.baldwin.cx); Mon, 27 Sep 2010 11:49:35 -0400 (EDT) X-Virus-Scanned: clamav-milter 0.95.1 at bigwig.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-2.6 required=4.2 tests=AWL,BAYES_00 autolearn=ham version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on bigwig.baldwin.cx Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, Peter Jeremy 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: Mon, 27 Sep 2010 15:49:37 -0000 On Friday, September 24, 2010 6:53:52 pm Peter Jeremy wrote: > [Pruning CC list and re-adding freebsd-arch on the (forlorn) hope that > this thread will move to where it belongs] > > On 2010-Sep-23 07:31:13 -0700, Matthew Jacob wrote: > >It turns out that the big issue here was more the savecore time coming > >back up rather than the time of dumping. > > In my experience, the problem isn't so much the savecore time as the > time to run /usr/bin/crashinfo. Whilst savecore needs to run early > (before anything tramples on the crashdump in swap), the latter could > run at any time. It would seem reasonable to either run crashinfo in > the background or as a batchjob triggered by /etc/rc.d/savecore. That is probably true and would be fine, yes. > On 2010-Sep-23 18:59:53 +0100, Gavin Atkinson wrote: > >I appreciate the issue about filling partitions is a valid one. Would a > >possible compromise be that on release media, crashinfo(8) or similar will > >default to only keeping the most recent coredump or similar? Given /var > >now defaults to 4GB, Defaulting to keeping a single core is probably > >acceptable. > > savecore already has support for a 'minfree' file to prevent > crashdumps filling the crashdir. Maybe the default install should > include a minfree set to (say) 512MB. The one problem this approach is it implements a FIFO instead of a LIFO. I want the N most recent crashdumps to be saved, not the first N. -- John Baldwin