From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267411AbUHDUhk (ORCPT ); Wed, 4 Aug 2004 16:37:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267415AbUHDUhk (ORCPT ); Wed, 4 Aug 2004 16:37:40 -0400 Received: from e2.ny.us.ibm.com ([32.97.182.102]:34279 "EHLO e2.ny.us.ibm.com") by vger.kernel.org with ESMTP id S267414AbUHDUh3 (ORCPT ); Wed, 4 Aug 2004 16:37:29 -0400 Date: Wed, 04 Aug 2004 13:36:36 -0700 From: "Martin J. Bligh" To: Ingo Molnar cc: Andrew Morton , kernel@kolivas.org, linux-kernel@vger.kernel.org, Rick Lindsley Subject: Re: 2.6.8-rc2-mm2 performance improvements (scheduler?) Message-ID: <216720000.1091651795@flay> In-Reply-To: <20040804201019.GA25908@elte.hu> References: <20040804122414.4f8649df.akpm@osdl.org> <211490000.1091648060@flay> <20040804201019.GA25908@elte.hu> X-Mailer: Mulberry/2.1.2 (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 --On Wednesday, August 04, 2004 22:10:19 +0200 Ingo Molnar wrote: > > * Martin J. Bligh wrote: > >> >> SDET 16 (see disclaimer) >> >> Throughput Std. Dev >> >> 2.6.7 100.0% 0.3% >> >> 2.6.8-rc2 99.5% 0.3% >> >> 2.6.8-rc2-mm2 118.5% 0.6% >> > >> > hum, interesting. Can Con's changes affect the inter-node and inter-cpu >> > balancing decisions, or is this all due to caching effects, reduced context >> > switching etc? > > Martin, could you try 2.6.8-rc2-mm2 with staircase-cpu-scheduler > unapplied a re-run at least part of your tests? > > there are a number of NUMA improvements queued up on -mm, and it would > be nice to know what effect these cause, and what effect the staircase > scheduler has. Sure. I presume it's just the one patch: staircase-cpu-scheduler-268-rc2-mm1.patch which seemed to back out clean and is building now. Scream if that's not all of it ... M.