From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263981AbTDNWxx (for ); Mon, 14 Apr 2003 18:53:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263988AbTDNWxx (for ); Mon, 14 Apr 2003 18:53:53 -0400 Received: from pc2-cwma1-4-cust86.swan.cable.ntl.com ([213.105.254.86]:10172 "EHLO lxorguk.ukuu.org.uk") by vger.kernel.org with ESMTP id S263981AbTDNWxv (for ); Mon, 14 Apr 2003 18:53:51 -0400 Subject: Re: [RFC][2.5 patch] K6-II/K6-II: enable X86_USE_3DNOW From: Alan Cox To: Dave Jones Cc: Adrian Bunk , Linux Kernel Mailing List In-Reply-To: <20030414222723.GA26161@suse.de> References: <20030414222110.GK9640@fs.tum.de> <20030414222723.GA26161@suse.de> Content-Type: text/plain Content-Transfer-Encoding: 7bit Organization: Message-Id: <1050357987.26525.24.camel@dhcp22.swansea.linux.org.uk> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.2.2 (1.2.2-5) Date: 14 Apr 2003 23:06:28 +0100 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Llu, 2003-04-14 at 23:27, Dave Jones wrote: > On Tue, Apr 15, 2003 at 12:21:10AM +0200, Adrian Bunk wrote: > > If my patch is wrong and this is a RTFM please give me a hint where to > > find the "M". > > > > The AMD K6-II and K6-III do support 3DNow! > > The 3dnow memory copies aren't a win on anything > earlier than an Athlon iirc. Under 1% on a K6. The processor is so horribly memory bound the actual copy function is borderline irrelevant. If its not in the K6-III cache its not arriving in a hurry