Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 28 Jan 2003 11:40:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 28 Jan 2003 11:40:24 -0500 Received: from franka.aracnet.com ([216.99.193.44]:24018 "EHLO franka.aracnet.com") by vger.kernel.org with ESMTP id ; Tue, 28 Jan 2003 11:40:22 -0500 Date: Tue, 28 Jan 2003 08:49:34 -0800 From: "Martin J. Bligh" To: Andi Kleen cc: jasonp@boo.net, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH] page coloring for 2.5.59 kernel, version 1 Message-ID: <1498630000.1043772571@titus> In-Reply-To: References: <3.0.6.32.20030127224726.00806c20@boo.net.suse.lists.linux.kernel> <884740000.1043737132@titus.suse.lists.linux.kernel> <20030128071313.GH780@holomorphy.com.suse.lists.linux.kernel> <1466000000.1043770007@titus.suse.lists.linux.kernel> X-Mailer: Mulberry/2.2.1 (Linux/x86) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > The main advantage of cache coloring normally is that benchmarks > should get stable results. Without it a benchmark result can vary based on > random memory allocation patterns. > > Just having stable benchmarks may be worth it. OK, I'll try to hack the scripts to measure standard deviation between runs as well. > I suspect the benefit will vary a lot based on the CPU. Your caches may > have good enough associativity. On other CPUs it may make much more difference. IIRC, P3's are 4 way associative ... people had been saying that this would make more of a difference on machines with larger caches, which is why I ran it ... 2Mb is fairly big for ia32. M. - 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/