Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756053AbZIVLWt (ORCPT ); Tue, 22 Sep 2009 07:22:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755988AbZIVLWr (ORCPT ); Tue, 22 Sep 2009 07:22:47 -0400 Received: from out1.smtp.messagingengine.com ([66.111.4.25]:40988 "EHLO out1.smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753266AbZIVLWq (ORCPT ); Tue, 22 Sep 2009 07:22:46 -0400 X-Sasl-enc: IBFvC4yzNml+2kyZFQH1hDruzBb7nE2vIRlwobQ14PPf 1253618569 Date: Tue, 22 Sep 2009 08:22:46 -0300 From: Henrique de Moraes Holschuh To: Mike Galbraith Cc: James Cloos , lkml , Ulrich Lukas Subject: Re: Poor desktop responsiveness with background I/O-operations Message-ID: <20090922112246.GA23987@khazad-dum.debian.net> References: <20090920080728.73bfe2a1@infradead.org> <4AB5ECD0.7010903@datenparkplatz.de> <1253475521.9224.43.camel@marge.simson.net> <4AB6C73C.1030004@gmail.com> <1253507034.23414.90.camel@marge.simson.net> <4AB72FDC.5090403@datenparkplatz.de> <1253520364.25640.57.camel@marge.simson.net> <1253603193.6875.118.camel@marge.simson.net> <1253611228.11051.2.camel@marge.simson.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1253611228.11051.2.camel@marge.simson.net> X-GPG-Fingerprint: 1024D/1CDB0FE3 5422 5C61 F6B7 06FB 7E04 3738 EE25 DE3F 1CDB 0FE3 User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1063 Lines: 23 On Tue, 22 Sep 2009, Mike Galbraith wrote: > On Tue, 2009-09-22 at 09:06 +0200, Mike Galbraith wrote: > > I don't know if distros provide a tool that supports SCHED_IDLE, if so, > > you can use that to set both CPU and IO usage to IDLE class in one go. > > P.S. I just remembered, don't use SCHED_IDLE with kernels < 2.6.28. > There are two patches wrt this scheduling class which did not go to the > stable trees less than 2.6.28. Since 2.6.27 is long-term, maybe they should be sent to 2.6.27? It is weird to have a long-term stable kernel for which the recommendation is "don't use SCHED_IDLE". -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh -- 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/