Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755407Ab0DZVpt (ORCPT ); Mon, 26 Apr 2010 17:45:49 -0400 Received: from isilmar.linta.de ([213.133.102.198]:54140 "EHLO linta.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755374Ab0DZVpr (ORCPT ); Mon, 26 Apr 2010 17:45:47 -0400 Date: Mon, 26 Apr 2010 23:45:34 +0200 From: Dominik Brodowski To: Dave Jones , Arjan van de Ven , linux-kernel@vger.kernel.org, akpm@linux-foundation.org, mingo@elte.hu, peterz@infradead.org, tglx@linutronix.de, cpufreq@vger.kernel.org Subject: Re: [PATCH 0/7] Fix performance issue with ondemand governor Message-ID: <20100426214534.GA5346@comet.dominikbrodowski.net> Mail-Followup-To: Dominik Brodowski , Dave Jones , Arjan van de Ven , linux-kernel@vger.kernel.org, akpm@linux-foundation.org, mingo@elte.hu, peterz@infradead.org, tglx@linutronix.de, cpufreq@vger.kernel.org References: <20100418115949.7b743898@infradead.org> <20100426214156.GA32326@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100426214156.GA32326@redhat.com> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1064 Lines: 24 On Mon, Apr 26, 2010 at 05:41:56PM -0400, Dave Jones wrote: > On Sun, Apr 18, 2010 at 11:59:49AM -0700, Arjan van de Ven wrote: > > There have been various reports of the ondemand governor causing some > > serious performance issues, one of the latest ones from Andrew. > > There are several fundamental issues with ondemand (being worked on), > > but the report from Andrew can be fixed relatively easily. > > > > The fundamental issue is that ondemand will go to a (too) low CPU > > frequency for workloads that alternatingly disk and CPU bound... > > given the scheduler changes, these probably make more sense to go > via one of Ingo's trees ? > If everyone agrees, feel free to add my Signed-off-by: What about the issue Pavel reported and Willy confirmed (regression on older hardware)? Best, Dominik -- 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/