From owner-freebsd-questions@FreeBSD.ORG Sat Oct 30 12:11:30 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B5CB116A4CE for ; Sat, 30 Oct 2004 12:11:30 +0000 (GMT) Received: from pi.codefab.com (pi.codefab.com [199.103.21.227]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6881943D2F for ; Sat, 30 Oct 2004 12:11:30 +0000 (GMT) (envelope-from cswiger@mac.com) Received: from [192.168.1.3] (pool-68-160-246-51.ny325.east.verizon.net [68.160.246.51]) by pi.codefab.com (8.12.11/8.12.11) with ESMTP id i9UCBKqn093961 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sat, 30 Oct 2004 08:11:22 -0400 (EDT) Message-ID: <418384E9.8010601@mac.com> Date: Sat, 30 Oct 2004 08:11:21 -0400 From: Chuck Swiger Organization: The Courts of Chaos User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.3) Gecko/20040910 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Brian Bobowski References: <1099096228.18749.149.camel@aaron.proficuous.com> <20041030003606.GA60037@xor.obsecurity.org> <41838096.2080902@cogeco.ca> In-Reply-To: <41838096.2080902@cogeco.ca> 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=-3.9 required=5.5 tests=AWL,BAYES_00 autolearn=ham version=2.64 X-Spam-Checker-Version: SpamAssassin 2.64 (2004-01-11) on pi.codefab.com cc: FreeBSD User Questions List Subject: Re: make buildworld.........24 hours???? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 30 Oct 2004 12:11:30 -0000 Brian Bobowski wrote: [ ... ] > One thing I have to wonder - how compatible is 'make buildworld' with > multiple build processes(e.g. 'make -j4 buildworld')? I know some > makefiles don't get along well with the -j parameter, but if > buildworld is okay with it, this may offer a way to keep the processor > busy rather than waiting for disk access all the time, which could > make things faster, especially on such low-memory machines. Using -j is recommended only when you have lots of memory and can keep all of the processes resident in memory. Trying to run a parallel build on a low-memory machine is almost certainly going to be much slower, since you are going to swap more, not less. Time it for yourself and see... -- -Chuck