From owner-freebsd-current@FreeBSD.ORG Wed Oct 20 16:46:49 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 9563B16A4CE; Wed, 20 Oct 2004 16:46:49 +0000 (GMT) Received: from pooker.samsco.org (pooker.samsco.org [168.103.85.57]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2CB1843D2F; Wed, 20 Oct 2004 16:46:49 +0000 (GMT) (envelope-from scottl@freebsd.org) Received: from [192.168.254.11] (junior-wifi.samsco.home [192.168.254.11]) (authenticated bits=0) by pooker.samsco.org (8.12.11/8.12.10) with ESMTP id i9KGlD0Q050415; Wed, 20 Oct 2004 10:47:13 -0600 (MDT) (envelope-from scottl@freebsd.org) Message-ID: <4176961B.3050209@freebsd.org> Date: Wed, 20 Oct 2004 10:45:15 -0600 From: Scott Long User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.7.2) Gecko/20040929 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Ceri Davies References: <41767CF1.2020005@FreeBSD.org> <6ff30abd04102008163115a32d@mail.gmail.com> <41769194.4060809@freebsd.org> <20041020164002.GH57641@submonkey.net> In-Reply-To: <20041020164002.GH57641@submonkey.net> X-Enigmail-Version: 0.86.1.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, hits=0.0 required=3.8 tests=none autolearn=no version=2.63 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on pooker.samsco.org cc: jamie rishaw at google mail cc: current@freebsd.org cc: arch@freebsd.org Subject: Re: [Fwd: What do people think about not installing a stripped /kernel ?] 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, 20 Oct 2004 16:46:49 -0000 Ceri Davies wrote: > On Wed, Oct 20, 2004 at 10:25:56AM -0600, Scott Long wrote: > >>jamie rishaw at google mail wrote: >> >>>What are the performance implications of a debug kernel? >>> >>>Disk space really shouldnt even be an issue.. if it is, and its down >>>to the difference of 20 megs, well, duno. 512 meg CF's going for >>>sub-$50 .. the only reason i could see even a debate would be any >>>significant performance hits.. >> >>Disk space on the release CD images is at a premium, and putting debug >>kernels on there generally consumes 10-15MB that could be used by >>packages. > > > Would you consider this something that we could run with in > CURRENT/STABLE and just turn off for releases? > > Ceri > -- That's already the case for HEAD. I have no opinion on 4-STABLE and 5-STABLE. The only problem might be that while disk space is cheap, the root partition is often fairly small and of course fixed in size and un-growable. 256MB might get really tight if you start installing multiple debug kernels. Also, 4.x uses 128MB for root, IIRC, which leaves even less wiggle room. It's fine to mandate that the root partitions shall be bigger in the future to accomodate this, but for those that are doing source upgrades from older systems, they might be in for a shock when 1/3 of their root partition gets consumed by a kernel. Scott