From owner-freebsd-questions Mon Nov 24 00:43:32 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id AAA16759 for questions-outgoing; Mon, 24 Nov 1997 00:43:32 -0800 (PST) (envelope-from owner-freebsd-questions) Received: from mail.san.rr.com (san.rr.com [204.210.0.1]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id AAA16754 for ; Mon, 24 Nov 1997 00:43:30 -0800 (PST) (envelope-from studded@san.rr.com) Received: (from studded@localhost) by mail.san.rr.com (8.8.7/8.8.7) id AAA08331; Mon, 24 Nov 1997 00:43:40 -0800 (PST) Message-Id: <199711240843.AAA08331@mail.san.rr.com> From: "Studded" To: "freebsd-questions@FreeBSD.ORG" , "Michael Porter" Date: Mon, 24 Nov 97 00:42:53 -0800 Reply-To: "Studded" Priority: Normal X-Mailer: PMMail 1.95a For OS/2 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Subject: Re: make -j Sender: owner-freebsd-questions@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk On Sun, 23 Nov 1997 19:27:19 -0600, Michael Porter wrote: >I've read a lot lately about speeding up make worlds. On my P75, >overclocked to 90, with 40 megs ram, I get just over 7 hours. I finally >manned make to look up what the "-j" did. Ok, so it sets the number of >simultaneous jobs. Two questions: > >1) What's the default number of jobs? I'd guess one. My understanding is that you are correct. >2) How should I determine what the best number is? It's bound to be >different on different systems, so does anyone have any general rules? >Rules like 486-2 586slow-3 etc, or something like that. Assuming you are building some form of 2.2, you probably won't be able to use -j anything. :-/ I used to be able to do -j 2 very reliably, and it shaved about 1/3 off my compile time. Since some time shortly before the release of 2.2.5, this hasn't worked for me. As always, YMMV. Good luck, Doug *** Proud operator, designer and maintainer of the world's largest *** Internet Relay Chat server. 4,168 clients and still growing. :-) *** Try spider.dal.net on ports 6662-4 (Powered by FreeBSD) *** Part of the DALnet IRC network ***