From owner-freebsd-smp Mon Nov 3 00:22:31 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id AAA16699 for smp-outgoing; Mon, 3 Nov 1997 00:22:31 -0800 (PST) (envelope-from owner-freebsd-smp) Received: from mail.cs.tu-berlin.de (mail.cs.tu-berlin.de [130.149.17.13]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id AAA16687 for ; Mon, 3 Nov 1997 00:22:13 -0800 (PST) (envelope-from wosch@cs.tu-berlin.de) Received: from panke.panke.de (anonymous214.ppp.cs.tu-berlin.de [130.149.17.214]) by mail.cs.tu-berlin.de (8.8.6/8.8.7) with ESMTP id JAA22267; Mon, 3 Nov 1997 09:14:16 +0100 (MET) Received: (from wosch@localhost) by panke.panke.de (8.8.5/8.6.12) id JAA00434; Mon, 3 Nov 1997 09:10:12 +0100 (MET) To: Chuck Robey Cc: Wolfram Schneider , "Jordan K. Hubbard" , smp@freebsd.org Subject: Re: Some SMP timing tests. References: From: Wolfram Schneider Date: 03 Nov 1997 09:10:10 +0100 In-Reply-To: Chuck Robey's message of Sun, 2 Nov 1997 16:12:47 -0500 (EST) Message-ID: Lines: 20 Sender: owner-freebsd-smp@freebsd.org X-Loop: FreeBSD.org Precedence: bulk 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%. -- Wolfram Schneider http://www.apfel.de/~wosch/