From owner-freebsd-performance@FreeBSD.ORG Wed Feb 25 11:36:03 2004 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5FA6A16A4CE; Wed, 25 Feb 2004 11:36:03 -0800 (PST) Received: from dragon.nuxi.com (trang.nuxi.com [66.93.134.19]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3B5C643D2F; Wed, 25 Feb 2004 11:36:03 -0800 (PST) (envelope-from obrien@NUXI.com) Received: from dragon.nuxi.com (obrien@localhost [127.0.0.1]) by dragon.nuxi.com (8.12.10/8.12.10) with ESMTP id i1PJZqOJ068061; Wed, 25 Feb 2004 11:35:52 -0800 (PST) (envelope-from obrien@dragon.nuxi.com) Received: (from obrien@localhost) by dragon.nuxi.com (8.12.11/8.12.11/Submit) id i1PJZp0S068060; Wed, 25 Feb 2004 11:35:51 -0800 (PST) (envelope-from obrien) Date: Wed, 25 Feb 2004 11:35:50 -0800 From: "David O'Brien" To: Oliver Lehmann Message-ID: <20040225193550.GM7567@dragon.nuxi.com> References: <20040223192103.59ad7b69.lehmann@ans-netz.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040223192103.59ad7b69.lehmann@ans-netz.de> User-Agent: Mutt/1.4.1i X-Operating-System: FreeBSD 5.2-CURRENT Organization: The NUXI BSD Group X-Pgp-Rsa-Fingerprint: B7 4D 3E E9 11 39 5F A3 90 76 5D 69 58 D9 98 7A X-Pgp-Rsa-Keyid: 1024/34F9F9D5 cc: freebsd-performance@freebsd.org cc: freebsd-alpha@freebsd.org Subject: Re: Bad performance on alpha? (make buildworld) X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: freebsd-performance@freebsd.org, freebsd-alpha@freebsd.org List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 25 Feb 2004 19:36:03 -0000 On Mon, Feb 23, 2004 at 07:21:03PM +0100, Oliver Lehmann wrote: > I run several buildworld's on both, an Alpha EV56 and a Intel PII. I'm > wondering that the Pentium beats the Alpha. Both systems have INVARIANTS* > and WITNESS* disabled. Furthermore, no special tweakups - nearly "out of > the box" configured. Build the same target arch on both machines. 'buildworld' times across platforms are never comparable. alpha-ev56:/usr/src# time make TARGET_ARCH=sparc64 buildworld p-ii:/usr/src# time make TARGET_ARCH=sparc64 buildworld (pick an target arch other than alpha or i386: ia64, sparc64, powerpc, amd64 to make sure neither platform has an advantage in the buildworld steps) Even this isn't a fair comparison as you've got to build the cross tools and that will be way different on the two platforms. So what you really want to do, is do a full cross-build, and then rebuild only stage4 and time that. See /usr/src/Makefile.inc1 to figure out the internal targets.