Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753026Ab0ADMhW (ORCPT ); Mon, 4 Jan 2010 07:37:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752524Ab0ADMhU (ORCPT ); Mon, 4 Jan 2010 07:37:20 -0500 Received: from bombadil.infradead.org ([18.85.46.34]:58977 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751212Ab0ADMhT (ORCPT ); Mon, 4 Jan 2010 07:37:19 -0500 Subject: Re: [RFC][PATCH] sched: avoid huge bonus to sleepers on busy machines From: Peter Zijlstra To: Mike Galbraith Cc: Suresh Jayaraman , Ingo Molnar , linux-kernel@vger.kernel.org In-Reply-To: <1262608250.9734.50.camel@marge.simson.net> References: <1262596842-17392-1-git-send-email-sjayaraman@suse.de> <1262603675.9734.36.camel@marge.simson.net> <4B41D8E5.1000908@suse.de> <1262608250.9734.50.camel@marge.simson.net> Content-Type: text/plain; charset="UTF-8" Date: Mon, 04 Jan 2010 13:36:37 +0100 Message-ID: <1262608597.6408.117.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 609 Lines: 15 On Mon, 2010-01-04 at 13:30 +0100, Mike Galbraith wrote: > Any diddling of sleeper fairness would have to be accompanied with a > preemption model change methinks. Just told jays the exact same thing on IRC ;-) Also, workloads are interesting, the signal test thing is the easiest to test the preemption side, various things like QPID show the down-side iirc. -- 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/