Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753536AbYKGJUe (ORCPT ); Fri, 7 Nov 2008 04:20:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751374AbYKGJUO (ORCPT ); Fri, 7 Nov 2008 04:20:14 -0500 Received: from smtprelay10.ispgateway.de ([80.67.29.24]:38762 "EHLO smtprelay10.ispgateway.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751359AbYKGJUN (ORCPT ); Fri, 7 Nov 2008 04:20:13 -0500 From: Ingo Oeser To: Peter Zijlstra Subject: Re: Scheduler RR, first time slice wrong? Date: Fri, 7 Nov 2008 10:19:57 +0100 User-Agent: KMail/1.9.10 Cc: Ingo Molnar , Andreas Huber , linux-kernel@vger.kernel.org, Mike Galbraith , Dmitry Adamushko References: <1225956167.4472.27.camel@chber1-10446x.ch.keymile.net> <20081106074449.GC8459@elte.hu> <1225961212.7803.4190.camel@twins> In-Reply-To: <1225961212.7803.4190.camel@twins> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200811071020.06422.ioe-lkml@rameria.de> X-Df-Sender: 849595 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 816 Lines: 25 Hi Peter, On Thursday 06 November 2008, Peter Zijlstra wrote: > Currently we inherit the RR time-slice from our parent. In case that is > init we inherit the 1s value set by default, in case its an already > running RR task, we inherit whatever is left. > > Fix both these by resetting the time-slice on fork. I remember that this MIGHT be on purpose to mitigate fork bombs. Behaviour was, that you could starve others, if you fork, do little or no work and fork again before your timeslice is over. But I'm not sure this applies here... Best Regards Ingo Oeser -- 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/