From owner-freebsd-performance@FreeBSD.ORG Tue Feb 24 12:26:56 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 63A5B16A4CF for ; Tue, 24 Feb 2004 12:26:56 -0800 (PST) Received: from diogenis.ceid.upatras.gr (diogenis.ceid.upatras.gr [150.140.141.181]) by mx1.FreeBSD.org (Postfix) with SMTP id 7E4F643D1D for ; Tue, 24 Feb 2004 12:26:55 -0800 (PST) (envelope-from ntarmos@Noth.ceid.upatras.gr) Received: (qmail 10535 invoked from network); 24 Feb 2004 20:26:52 -0000 Received: from noth.ceid.upatras.gr (150.140.143.234) by diogenis.ceid.upatras.gr with SMTP; 24 Feb 2004 20:26:52 -0000 Received: from localhost (localhost.localdomain [127.0.0.1]) by Noth.ceid.upatras.gr (Postfix) with ESMTP id 6D07F101CC; Tue, 24 Feb 2004 22:26:53 +0200 (EET) Received: from Noth.ceid.upatras.gr ([127.0.0.1]) by localhost (Noth [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 08479-08; Tue, 24 Feb 2004 22:26:52 +0200 (EET) Received: by Noth.ceid.upatras.gr (Postfix, from userid 1000) id DB4D2101C7; Tue, 24 Feb 2004 22:26:52 +0200 (EET) Date: Tue, 24 Feb 2004 22:26:52 +0200 From: Nikos Ntarmos To: Oliver Lehmann Message-ID: <20040224202652.GA13675@diogenis.ceid.upatras.gr> 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/1.5.5.1+cvs20040105i X-Virus-Scanned: by amavisd-new-20030616-p7 (Debian) at Noth.ceid.upatras.gr 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 List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 24 Feb 2004 20:26:56 -0000 Hi there. 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. IIRC the 600MHz EV56's performance wrt integer operations (such as compiling) is somewhere in the vicinity of a 400MHz P-II, so the difference you see in turn-around times when buildworld'ing isn't quite that big. If the operations were identical, you should see better times when building on the alpha. However, also take into account that compiling (and optimizing) for a RISC CPU, apart from generating larger binaries, is AFAIK supposedly more difficult than compiling (and optimizing) for a CISC CPU. Let alone when compiling using a compiler compiled with a compiler (nice, huh?) highly optimized for x86 platforms but not as good when it comes to the AXP arch. \n\n -- Nikos "Noth" Ntarmos | < ntarmos at ceid dot upatras dot gr > NetCINS Lab. @ C.E.I.D. | [ http://{noth,p2p}.ceid.upatras.gr/ ] U. of Patras - Greece | ( 38.2594N, 21.7428E ) ( 1024D / CF95160A )