Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755980Ab3GURfH (ORCPT ); Sun, 21 Jul 2013 13:35:07 -0400 Received: from e28smtp05.in.ibm.com ([122.248.162.5]:36487 "EHLO e28smtp05.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755888Ab3GURfF (ORCPT ); Sun, 21 Jul 2013 13:35:05 -0400 Message-ID: <51EC1B38.8000708@linux.vnet.ibm.com> Date: Sun, 21 Jul 2013 23:02:40 +0530 From: Preeti U Murthy User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:14.0) Gecko/20120717 Thunderbird/14.0 MIME-Version: 1.0 To: Jason Low CC: Ingo Molnar , Peter Zijlstra , LKML , Mike Galbraith , Thomas Gleixner , Paul Turner , Alex Shi , Vincent Guittot , Morten Rasmussen , Namhyung Kim , Andrew Morton , Kees Cook , Mel Gorman , Rik van Riel , aswin@hp.com, scott.norton@hp.com, chegu_vinod@hp.com, Srikar Dronamraju Subject: Re: [RFC PATCH v2] sched: Limit idle_balance() References: <1374220211.5447.9.camel@j-VirtualBox> <51E921EC.5040501@linux.vnet.ibm.com> <1374262090.1830.16.camel@j-VirtualBox> In-Reply-To: <1374262090.1830.16.camel@j-VirtualBox> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-TM-AS-MML: No X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13072117-8256-0000-0000-0000086FBFE2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1640 Lines: 51 Hi Json, With V2 of your patch here are the results for the ebizzy run on 3.11-rc1 + patch on a 1 socket, 16 core powerpc machine. Each ebizzy run was for 30 seconds. Number_of_threads %improvement_with_patch 4 8.63 8 1.29 12 9.98 16 20.46 Let me know if you want me to profile any of these runs for specific statistics. Regards Preeti U Murthy On 07/20/2013 12:58 AM, Jason Low wrote: > On Fri, 2013-07-19 at 16:54 +0530, Preeti U Murthy wrote: >> Hi Json, >> >> I ran ebizzy and kernbench benchmarks on your 3.11-rc1 + your "V1 >> patch" on a 1 socket, 16 core powerpc machine. I thought I would let you >> know the results before I try your V2. >> >> Ebizzy: 30 seconds run. The table below shows the improvement in the >> number of records completed. I have not spent enough time on the patch >> to explain such a big improvement. >> >> Number_of_threads %improvement_with_patch >> 4 41.86% >> 8 9.8% >> 12 34.77% >> 16 28.37% >> >> While on kernbench there was no significant change in the observation. >> >> I will try patch V2 and let you know the results. > > Great to see those improvements so far. Thank you for testing this. > > Jason > -- 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/