From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758214AbZEHCse (ORCPT ); Thu, 7 May 2009 22:48:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753230AbZEHCsX (ORCPT ); Thu, 7 May 2009 22:48:23 -0400 Received: from yw-out-2324.google.com ([74.125.46.31]:40415 "EHLO yw-out-2324.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752662AbZEHCsW convert rfc822-to-8bit (ORCPT ); Thu, 7 May 2009 22:48:22 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=ivDY/Ie5MAm29yZlmXgULh38YrN6kH2YSJVqnMO8NnjIBh2//jTAP5Se3zZJRr4Mzl 1ca8F0SWK9YOCDG58BeMcG+t/vg4KDJdTwj4BSO8DTOydiRouY1+udSHEYToccuoTVh4 qdsod6rCw5ogfd5EHBgOKs1qOykXoDS3AFidM= MIME-Version: 1.0 In-Reply-To: <725760.23277.qm@web26207.mail.ukl.yahoo.com> References: <1212611148.19205.22.camel@lappy.programming.kicks-ass.net> <725760.23277.qm@web26207.mail.ukl.yahoo.com> Date: Fri, 8 May 2009 11:48:20 +0900 Message-ID: <49b7c2350905071948w37fd3c0ekfdfd0d1009685053@mail.gmail.com> Subject: Re: Inquiry: Should we remove "isolcpus= kernel boot option? (may have realtime uses) From: GeunSik Lim To: trimarchimichael@yahoo.it Cc: Max Krasnyansky , Peter Zijlstra , Mark Hounschell , Nick Piggin , Ingo Oeser , Paul Jackson , linux-kernel@vger.kernel.org, Con Kolivas , "Derek L. Fults" , devik , Dimitri Sivanich , Dinakar Guniguntala , Emmanuel Pacaud , Frederik Deweerdt , Ingo Molnar , Matthew Dobson , rostedt@goodmis.org, Oleg Nesterov , "Paul E. McKenney" , Paul Menage , "Randy.Dunlap" , suresh.b.siddha@intel.com, Thomas Gleixner , Fabio Checconi Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Dear Michael Trimarchi, Recently, I read your paper about EDF implementation in Linux like belows. http://feanor.sssup.it/~marko/SAC09.pdf (An implementation of the earliest deadline first algorithm in Linux Proceedings of the 2009 ACM symposium on Applied Computing. ) Can I get your 2.6.27 based EDF patch to test your experiment result ? Thanks reading. Regards, GeunSik, Lim 2008/6/5 Michael Trimarchi : > [ sorry if this is going OT ] > > Hi, > >> >> Furthermore, cpusets allow for isolated but load-balanced RT domains. We >> now have a reasonably strong RT balancer, and I'm looking at implementing >> a full partitioned EDF scheduler somewhere in the future. >> > > I'm working on a partitioned EDF scheduler right now, and I have to > face several issues, starting from the interface to use to expose the > EDF scheduler to userspace, and the integration with the existing > sched_rt policy. > > By now I'm experimenting with an additional sched_class that implements > a SCHED_EDF policy, extending the POSIX struct sched_param with the > EDF parameters of the task, do you see any better way to do that? > Could that approach be reasonable? > > Michael > > >      ___________________________________ > Scopri il Blog di Yahoo! Mail: trucchi, novità, consigli... e la tua opinione! > http://www.ymailblogit.com/blog/ > -- > 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/ > -- Regards, GeunSik Lim -- 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/