From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755187AbZHYPd5 (ORCPT ); Tue, 25 Aug 2009 11:33:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754853AbZHYPd4 (ORCPT ); Tue, 25 Aug 2009 11:33:56 -0400 Received: from smtp4.ultrahosting.com ([74.213.175.253]:38415 "EHLO smtp.ultrahosting.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754836AbZHYPdz (ORCPT ); Tue, 25 Aug 2009 11:33:55 -0400 X-Greylist: delayed 582 seconds by postgrey-1.27 at vger.kernel.org; Tue, 25 Aug 2009 11:33:55 EDT Date: Tue, 25 Aug 2009 11:23:51 -0400 (EDT) From: Christoph Lameter X-X-Sender: cl@gentwo.org To: Mike Galbraith cc: raz ben yehuda , riel@redhat.com, mingo@elte.hu, peterz@infradead.org, andrew motron , wiseman@macs.biu.ac.il, lkml , linux-rt-users@vger.kernel.org Subject: Re: RFC: THE OFFLINE SCHEDULER In-Reply-To: <1251021133.14003.172.camel@marge.simson.net> Message-ID: References: <1250983671.5688.21.camel@raz> <1251004897.7043.70.camel@marge.simson.net> <1251018551.3810.35.camel@raz> <1251012621.14003.71.camel@marge.simson.net> <1251025557.3810.65.camel@raz> <1251021133.14003.172.camel@marge.simson.net> User-Agent: Alpine 1.10 (DEB 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 23 Aug 2009, Mike Galbraith wrote: > The rest, I'll leave off replying to, we're kinda splitting hairs. I > don't see a big generic benefit to OFFSCHED or ilk, others do. No we are not splitting hairs. OFFSCHED takes the OS noise (interrupts, timers, RCU, cacheline stealing etc etc) out of certain processors. You cannot run an undisturbed piece of software on the OS right now.