Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 24 Oct 2002 20:04:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 24 Oct 2002 20:04:22 -0400 Received: from krusty.dt.E-Technik.uni-dortmund.de ([129.217.163.1]:54289 "EHLO mail.dt.e-technik.uni-dortmund.de") by vger.kernel.org with ESMTP id ; Thu, 24 Oct 2002 20:04:21 -0400 Date: Fri, 25 Oct 2002 02:10:23 +0200 From: Matthias Andree To: linux-kernel@vger.kernel.org Subject: Re: [CFT] faster athlon/duron memory copy implementation Message-ID: <20021025001023.GD3933@merlin.emma.line.org> Mail-Followup-To: linux-kernel@vger.kernel.org References: <3DB82ABF.8030706@colorfullife.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3DB82ABF.8030706@colorfullife.com> User-Agent: Mutt/1.5.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1646 Lines: 52 -----BEGIN PGP SIGNED MESSAGE----- On Thu, 24 Oct 2002, Manfred Spraul wrote: > AMD recommends to perform memory copies with backward read operations > instead of prefetch. > > http://208.15.46.63/events/gdc2002.htm > > Attached is a test app that compares several memory copy implementations. > Could you run it and report the results to me, together with cpu, > chipset and memory type? > > Please run 2 or 3 times. Here you are, three runs, shown is: floor((n1+n2+n3)/3) where n_i is the results (cycles/page) of the i-th run of the respective test Duron 700, Via KT133, PC133 (manuf. date 12/2000): (machine was NOT idle) 'warm up run' 11445 '2.4 non MMX' 22374 '2.4 MMX fallback' 20075 '2.4 MMX version' 17611 'faster_copy' 11103 'even_faster' 7225 'no_prefetch' 6549 Athlon XP1600+, Via KT333, PC2100 (manuf. date 10/2002): (idle) 'warm up run' 14106 '2.4 non MMX' 15382 '2.4 MMX fallback' 15416 '2.4 MMX version' 14103 'faster_copy' 8793 'even_faster' 8797 'no_prefetch' 6351 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iQCVAwUBPbiL5ydEoB0mv1ypAQEmpAP/UDkcx+UnItqTVcQzec3zDIUmrznZHkwa 0+cVgeMjg3e0QwIX85bmioicKlIw4WNz+AJZOyasFA+5VbxPBghkEkFOLzIzI9Bh Eq2/uGNWrcwLfhIhsVgy0c/XgYLFoCY7mfH2oSs8+3TvIXIxhJoz7CsnaF+STk8e wkWHfLN2+B0= =4cF6 -----END PGP SIGNATURE----- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/