From owner-freebsd-smp Mon Nov 3 07:53:52 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id HAA09868 for smp-outgoing; Mon, 3 Nov 1997 07:53:52 -0800 (PST) (envelope-from owner-freebsd-smp) Received: from picnic.mat.net (picnic.mat.net [206.246.122.117]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id HAA09854 for ; Mon, 3 Nov 1997 07:53:46 -0800 (PST) (envelope-from chuckr@glue.umd.edu) Received: from localhost (chuckr@localhost) by picnic.mat.net (8.8.7/8.8.5) with SMTP id JAA08860; Mon, 3 Nov 1997 09:44:24 -0500 (EST) X-Authentication-Warning: picnic.mat.net: chuckr owned process doing -bs Date: Mon, 3 Nov 1997 09:44:23 -0500 (EST) From: Chuck Robey X-Sender: chuckr@picnic.mat.net To: Wolfram Schneider cc: "Jordan K. Hubbard" , smp@freebsd.org Subject: Re: Some SMP timing tests. In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-smp@freebsd.org X-Loop: FreeBSD.org Precedence: bulk On 3 Nov 1997, Wolfram Schneider wrote: > Chuck Robey writes: > > OK, I tried it. I started with no obj at all, did a make obj outside the > > timing loop, just so that I knew it was completely clean. This goes for > > both runs. The first one is before the patches were inserted, the second > > one after. Both on a Tyan Titan II, 2 each PPro 166's e/w 512K cache > > each, 64 Megs main memory. I have set the source on the first disk, the > > obj on the second, and swap evenly distributed between the two. Here's > > the results: > > > > before patching-> > > > > /usr/bin/time -l make -j 12 buildworld: > > 5389.14 real 3229.98 user 2902.01 sys > > With patched Makefile and bsd.subdir.mk, same command: > > 2780.55 real 1696.39 user 1571.73 sys > > I doubt that the patch can reduce the time up to 50%. I wondered about that too, but I made the conditions as identical as I could. I wonder what I missed? > > -- > Wolfram Schneider http://www.apfel.de/~wosch/ > > ----------------------------+----------------------------------------------- Chuck Robey | Interests include any kind of voice or data chuckr@glue.umd.edu | communications topic, C programming, and Unix. 213 Lakeside Drive Apt T-1 | Greenbelt, MD 20770 | I run Journey2 and picnic, both FreeBSD (301) 220-2114 | version 3.0 current -- and great FUN! ----------------------------+-----------------------------------------------