From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751846AbaGAGKR (ORCPT ); Tue, 1 Jul 2014 02:10:17 -0400 Received: from e23smtp02.au.ibm.com ([202.81.31.144]:40201 "EHLO e23smtp02.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750811AbaGAGKQ (ORCPT ); Tue, 1 Jul 2014 02:10:16 -0400 Message-ID: <53B250BD.9080808@linux.vnet.ibm.com> Date: Tue, 01 Jul 2014 14:10:05 +0800 From: Michael wang User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 MIME-Version: 1.0 To: Mike Galbraith CC: Peter Zijlstra , Rik van Riel , Ingo Molnar , Alex Shi , Paul Turner , Mel Gorman , Daniel Lezcano , LKML Subject: Re: [PATCH] sched: select 'idle' cfs_rq per task-group to prevent tg-internal imbalance References: <53A11A89.5000602@linux.vnet.ibm.com> <53B11387.9020001@linux.vnet.ibm.com> <1404115601.5132.156.camel@marge.simpson.net> <53B12417.9060904@linux.vnet.ibm.com> <1404120453.5132.194.camel@marge.simpson.net> <53B223AE.10903@linux.vnet.ibm.com> <1404193267.5159.28.camel@marge.simpson.net> In-Reply-To: <1404193267.5159.28.camel@marge.simpson.net> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14070106-5490-0000-0000-000000539951 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/01/2014 01:41 PM, Mike Galbraith wrote: > On Tue, 2014-07-01 at 10:57 +0800, Michael wang wrote: > >> IMHO, currently the generic scheduler just try to take care both latency >> and throughput, both will take a little damage but won't be damaged too >> much, they just sacrificed for each other... > > The cost can be large, so it's worth an occasional ponder. Sure, if there are some useless efforts there, we'll locate them anyway, sooner or later ;-) Regards, Michael Wang > > -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/ >