Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751845AbZIHTHC (ORCPT ); Tue, 8 Sep 2009 15:07:02 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752175AbZIHTG7 (ORCPT ); Tue, 8 Sep 2009 15:06:59 -0400 Received: from mail-in-10.arcor-online.net ([151.189.21.50]:57462 "EHLO mail-in-10.arcor-online.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752156AbZIHTG6 (ORCPT ); Tue, 8 Sep 2009 15:06:58 -0400 X-DKIM: Sendmail DKIM Filter v2.8.2 mail-in-03.arcor-online.net 2D9822C2C67 Message-ID: <4AA6AB52.8070206@arcor.de> Date: Tue, 08 Sep 2009 22:06:58 +0300 From: Nikos Chantziaras Organization: Lucas Barks User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.1) Gecko/20090826 Thunderbird/3.0b3 MIME-Version: 1.0 To: Ingo Molnar CC: Pekka Pietikainen , Michael Buesch , Con Kolivas , linux-kernel@vger.kernel.org, Peter Zijlstra , Mike Galbraith , Felix Fietkau Subject: Re: BFS vs. mainline scheduler benchmarks and measurements References: <20090906205952.GA6516@elte.hu> <200909071716.57722.mb@bu3sch.de> <20090907182629.GA3484@elte.hu> <200909072051.13748.mb@bu3sch.de> <20090907205701.GA8590@elte.hu> <20090907232415.GA17182@ee.oulu.fi> <20090908080427.GA7070@elte.hu> <4AA6123F.7020704@arcor.de> <20090908101221.GA21533@elte.hu> <4AA634B0.3050302@arcor.de> <20090908113554.GA13630@elte.hu> In-Reply-To: <20090908113554.GA13630@elte.hu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1194 Lines: 34 On 09/08/2009 02:35 PM, Ingo Molnar wrote: > > * Nikos Chantziaras wrote: > >> [...] That would mean that you (or anyone else with an interest of >> tracking this down) would follow the examples given (by me and >> others, like enabling desktop compositing, firing up mplayer with >> a video and generally reproducing this using the quite detailed >> steps I posted as a recipe). > > Could you follow up on Frederic's detailed tracing suggestions that > would give us the source of the latency? I've set it up and ran the tests now. > ( Also, as per lkml etiquette, please try to keep the Cc: list > intact when replying to emails. I missed your first reply > that you un-Cc:-ed. ) Sorry for that. > A quick look at the latencytop output suggests a scheduling latency. > Could you send me the kernel .config that you are using? That would be this one: http://foss.math.aegean.gr/~realnc/kernel/config-2.6.31-rc9 -- 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/