From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754375Ab1HaJ2t (ORCPT ); Wed, 31 Aug 2011 05:28:49 -0400 Received: from merlin.infradead.org ([205.233.59.134]:51368 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752147Ab1HaJ2s convert rfc822-to-8bit (ORCPT ); Wed, 31 Aug 2011 05:28:48 -0400 Subject: Re: [RFC PATCH 00/32] Nohz cpusets (was: Nohz Tasks) From: Peter Zijlstra To: Mike Galbraith Cc: Frederic Weisbecker , Gilad Ben-Yossef , LKML , Andrew Morton , Anton Blanchard , Avi Kivity , Ingo Molnar , Lai Jiangshan , "Paul E . McKenney" , Paul Menage , Stephen Hemminger , Thomas Gleixner , Tim Pepper Date: Wed, 31 Aug 2011 11:28:07 +0200 In-Reply-To: <1314762442.4653.5.camel@marge.simson.net> References: <1313423549-27093-1-git-send-email-fweisbec@gmail.com> <20110830140648.GL9748@somewhere.redhat.com> <1314762442.4653.5.camel@marge.simson.net> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT X-Mailer: Evolution 3.0.2- Message-ID: <1314782887.23993.12.camel@twins> Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2011-08-31 at 05:47 +0200, Mike Galbraith wrote: > On Tue, 2011-08-30 at 16:06 +0200, Frederic Weisbecker wrote: > > > Ah I haven't tested with that isolcpus especially as it's headed toward > > removal. > > It is? Is it being replaced by something? (I find it useful) cpusets? Afaict all it does is not include a number of cpus in the sched domains, creating a bunch of independent scheduling cpus. You can use cpusets to get to the same state. [cpuisol seems to already be broken for SCHED_FIFO tasks, since they share the def_root_domain]