Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759290AbZC0QYM (ORCPT ); Fri, 27 Mar 2009 12:24:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757811AbZC0QX4 (ORCPT ); Fri, 27 Mar 2009 12:23:56 -0400 Received: from viefep18-int.chello.at ([62.179.121.38]:9749 "EHLO viefep18-int.chello.at" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757665AbZC0QX4 (ORCPT ); Fri, 27 Mar 2009 12:23:56 -0400 X-SourceIP: 213.93.53.227 Subject: Re: [PATCH] sched: rt group scheduling, compare child's limit against parent's From: Peter Zijlstra To: Dhaval Giani Cc: Ingo Molnar , Bharata B Rao , Balbir Singh , Srivatsa Vaddagiri , Gautham Shenoy , lkml In-Reply-To: <20090327161915.GA8891@linux.vnet.ibm.com> References: <20090327161915.GA8891@linux.vnet.ibm.com> Content-Type: text/plain Date: Fri, 27 Mar 2009 17:23:59 +0100 Message-Id: <1238171039.16890.308.camel@twins> Mime-Version: 1.0 X-Mailer: Evolution 2.26.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 783 Lines: 18 On Fri, 2009-03-27 at 21:49 +0530, Dhaval Giani wrote: > Hi Ingo, Peter, > > I've not been able to follow the reasoning behind checking the sum of > the children's runtime not exceeding the parent's runtime as opposed to > the child's runtime not exceeding that of the parent. > > From what I understand, the limits only guarantee that the group cannot > exceed a certain limit and not guarantee a group gets to run. If my > understanding is corrct, maybe the following patch is needed? NAK, rt needs that as it guarantees a min too. -- 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/