From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752906AbXCLUpt (ORCPT ); Mon, 12 Mar 2007 16:45:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752913AbXCLUpt (ORCPT ); Mon, 12 Mar 2007 16:45:49 -0400 Received: from mail.gmx.net ([213.165.64.20]:55201 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752888AbXCLUps (ORCPT ); Mon, 12 Mar 2007 16:45:48 -0400 X-Authenticated: #14349625 X-Provags-ID: V01U2FsdGVkX19dRZ4AVmRd3Ut8yL/QIJchgA0uVUiWnZ69VgPuFs K1y83E8vUx6sVy Subject: Re: [PATCH][RSDL-mm 0/7] RSDL cpu scheduler for 2.6.21-rc3-mm2 From: Mike Galbraith To: Con Kolivas Cc: Ingo Molnar , linux kernel mailing list , ck list , Linus Torvalds , Andrew Morton In-Reply-To: <200703130738.19034.kernel@kolivas.org> References: <200703111457.17624.kernel@kolivas.org> <200703130549.47058.kernel@kolivas.org> <1173730314.6431.30.camel@Homer.simpson.net> <200703130738.19034.kernel@kolivas.org> Content-Type: text/plain Date: Mon, 12 Mar 2007 21:45:44 +0100 Message-Id: <1173732344.6431.54.camel@Homer.simpson.net> Mime-Version: 1.0 X-Mailer: Evolution 2.8.2 Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2007-03-13 at 07:38 +1100, Con Kolivas wrote: > On Tuesday 13 March 2007 07:11, Mike Galbraith wrote: > > > > Killing the known corner case starvation scenarios is wonderful, but > > let's not just pretend that interactive tasks don't have any special > > requirements. > > Now you're really making a stretch of things. Where on earth did I say that > interactive tasks don't have special requirements? It's a fundamental feature > of this scheduler that I go to great pains to get them as low latency as > possible and their fair share of cpu despite having a completely fair cpu > distribution. As soon as your cpu is fully utilized, fairness looses or interactivity loses. Pick one. -Mike