From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2992964AbXDRSAT (ORCPT ); Wed, 18 Apr 2007 14:00:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S2992968AbXDRSAS (ORCPT ); Wed, 18 Apr 2007 14:00:18 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:53269 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2992964AbXDRSAR (ORCPT ); Wed, 18 Apr 2007 14:00:17 -0400 Date: Wed, 18 Apr 2007 19:59:36 +0200 From: Ingo Molnar To: Linus Torvalds Cc: Matt Mackall , Nick Piggin , William Lee Irwin III , Peter Williams , Mike Galbraith , Con Kolivas , ck list , Bill Huey , linux-kernel@vger.kernel.org, Andrew Morton , Arjan van de Ven , Thomas Gleixner Subject: Re: [Announce] [patch] Modular Scheduler Core and Completely Fair Scheduler [CFS] Message-ID: <20070418175936.GA11980@elte.hu> References: <20070417070155.GF1057@wotan.suse.de> <20070417213954.GE11166@waste.org> <20070418031511.GA18452@wotan.suse.de> <20070418043831.GR11115@waste.org> <20070418050024.GF18452@wotan.suse.de> <20070418055525.GS11115@waste.org> <20070418152355.GU11115@waste.org> <20070418174945.GA7930@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070418174945.GA7930@elte.hu> 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=3.1.7 -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 * Ingo Molnar wrote: > In that sense 'fairness' is not global (and in fact it is almost > _never_ a global property, as X runs under root uid [*]), it is only > the most lowlevel scheduling machinery that can then be built upon. > [...] perhaps a more fitting term would be 'precise group-scheduling'. Within the lowest level task group entity (be that thread group or uid group, etc.) 'precise scheduling' is equivalent to 'fairness'. Ingo