Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423668AbXEAVXG (ORCPT ); Tue, 1 May 2007 17:23:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1423661AbXEAVXG (ORCPT ); Tue, 1 May 2007 17:23:06 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:49616 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1423668AbXEAVXE (ORCPT ); Tue, 1 May 2007 17:23:04 -0400 Date: Tue, 1 May 2007 23:22:23 +0200 From: Ingo Molnar To: linux-kernel@vger.kernel.org Cc: Linus Torvalds , Andrew Morton , Con Kolivas , Nick Piggin , Mike Galbraith , Arjan van de Ven , Peter Williams , Thomas Gleixner , caglar@pardus.org.tr, Willy Tarreau , Gene Heskett , Mark Lord , Zach Carter , buddabrod , Balbir Singh Subject: [patch] CFS scheduler, -v8 Message-ID: <20070501212223.GA29867@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.2.2i X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.0.3 -2.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1730 Lines: 47 i'm pleased to announce release -v8 of the CFS scheduler patchset. (The main goal of CFS is to implement "desktop scheduling" with as high quality as technically possible.) The CFS patch against v2.6.21.1 (or against v2.6.20.10) can be downloaded from the usual place: http://people.redhat.com/mingo/cfs-scheduler/ -v7 resolved a couple of important regresisons while not introducing new regressions, so i felt it was time to step forward: -v8 tries to address one of the last (known) frontiers: 3D/OpenGL games^H^H^H applications 'smoothness'. To achieve more scheduling smoothness, -v8 introduces a new 'precise load calculation and smoothing' feature. (A variant of this was suggested by Peter Williams in earlier CFS discussions - thanks Peter!) i was able to reuse the rq->cpu_load[] load average calculation from Peter Williams's smpnice code, and it's thus now utilized on UP too. As a nice side-effect of CFS using a smoothed load metric, apps should also start up faster under load. CFS now utilizes the full range of smpnice metrics. No other fundamental portion of CFS was touched, so the rate of change is moderate: 7 files changed, 140 insertions(+), 79 deletions(-) Changes since -v7: - powerpc debug output and build warning fixes (Balbir Singh) - documentation fixes (Zach Carter) - interactivity: precise load calculation and load smoothing As usual, any sort of feedback, bugreport, fix and suggestion is more than welcome, Ingo - 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/