Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752535Ab3GEGQh (ORCPT ); Fri, 5 Jul 2013 02:16:37 -0400 Received: from e28smtp07.in.ibm.com ([122.248.162.7]:47053 "EHLO e28smtp07.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750716Ab3GEGQg (ORCPT ); Fri, 5 Jul 2013 02:16:36 -0400 Message-ID: <51D664B9.7010407@linux.vnet.ibm.com> Date: Fri, 05 Jul 2013 14:16:25 +0800 From: Michael Wang User-Agent: Mozilla/5.0 (X11; Linux i686; rv:16.0) Gecko/20121011 Thunderbird/16.0.1 MIME-Version: 1.0 To: Mike Galbraith CC: Peter Zijlstra , LKML , Ingo Molnar , Alex Shi , Namhyung Kim , Paul Turner , Andrew Morton , "Nikunj A. Dadhania" , Ram Pai Subject: Re: [PATCH] sched: smart wake-affine References: <51A43B16.9080801@linux.vnet.ibm.com> <51D25A80.8090406@linux.vnet.ibm.com> <20130702085202.GA23916@twins.programming.kicks-ass.net> <51D29EE5.8080307@linux.vnet.ibm.com> <20130704091339.GK18898@dyad.programming.kicks-ass.net> <51D5428D.7080805@linux.vnet.ibm.com> <1372934013.9046.16.camel@marge.simpson.net> <51D633DB.5010508@linux.vnet.ibm.com> <1372997318.7315.23.camel@marge.simpson.net> <51D64C84.5080100@linux.vnet.ibm.com> <1373002865.8318.11.camel@marge.simpson.net> In-Reply-To: <1373002865.8318.11.camel@marge.simpson.net> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-TM-AS-MML: No X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13070506-8878-0000-0000-000007D38100 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1859 Lines: 54 On 07/05/2013 01:41 PM, Mike Galbraith wrote: [snip] >> >> Have you tried to use more loops and groups? will that show even bigger >> regressions? > > Nope, less on either side. > > hackbench -g 100 -l 1000 > avg > 3.10.0-regress 21.895 21.564 21.777 21.958 22.093 21.857 1.000 > 3.10.0-regressx 22.844 23.268 23.056 23.231 22.375 22.954 1.050 > > hackbench -g 1 -l 100000 > avg > 3.10.0-regress 29.913 29.711 30.395 30.213 30.236 30.093 1.000 > 3.10.0-regressx 30.392 31.003 30.728 31.008 30.389 30.704 1.020 Hmm...I'm not expecting to reserve all of the 15%, but this still seems a little bit more... PeterZ has suggested some optimization which I sent out yesterday, I suppose they haven't been included into this test yet, correct? Since currently I could not reproduce the issue on my box with that patch, I suppose it may solved that issue ;-) Regards, Michael Wang > >> BTW, is this the results of 10 group and 40 sockets == 400 tasks? > > Yeah, stock. > > Off to do some body/mind tuning. Bavarian mushrooms don't hide as well > as memory access thingies.. and I can still out run 'em. > > -Mike > > > > -- > 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/ > -- 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/