From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: [PATCH] page coloring for 2.5.59 kernel, version 1 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> From: Andi Kleen Date: 28 Jan 2003 17:37:25 +0100 In-Reply-To: "Martin J. Bligh"'s message of "28 Jan 2003 17:09:52 +0100" Message-ID: Sender: owner-linux-mm@kvack.org Return-Path: To: "Martin J. Bligh" Cc: jasonp@boo.net, linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: "Martin J. Bligh" writes: > > I think this one really needs to be done with the userspace cache > > thrashing microbenchmarks. > > If a benefit cannot be show on some sort of semi-realistic workload, > it's probably not worth it, IMHO. 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. 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. -Andi -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/