Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752053Ab3FCFup (ORCPT ); Mon, 3 Jun 2013 01:50:45 -0400 Received: from e28smtp01.in.ibm.com ([122.248.162.1]:44882 "EHLO e28smtp01.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751042Ab3FCFuj (ORCPT ); Mon, 3 Jun 2013 01:50:39 -0400 Message-ID: <51AC2EA2.7030106@linux.vnet.ibm.com> Date: Mon, 03 Jun 2013 13:50:26 +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: LKML , Ingo Molnar , Peter Zijlstra , Alex Shi , Namhyung Kim , Paul Turner , Andrew Morton , "Nikunj A. Dadhania" , Ram Pai Subject: Re: [RFC PATCH] sched: smart wake-affine References: <51A43B16.9080801@linux.vnet.ibm.com> <51ABFF6A.60206@linux.vnet.ibm.com> <1370228941.5988.66.camel@marge.simpson.net> <51AC0CD4.9070302@linux.vnet.ibm.com> <1370231597.5988.79.camel@marge.simpson.net> <51AC2121.1060903@linux.vnet.ibm.com> <1370236944.5988.108.camel@marge.simpson.net> In-Reply-To: <1370236944.5988.108.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: 13060305-4790-0000-0000-000008981B22 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1554 Lines: 42 On 06/03/2013 01:22 PM, Mike Galbraith wrote: [snip] >> >> I agree that this idea, in other work, 'stop wake-affine when current is >> busy with wakeup' may miss the chance to bring benefit, although I could >> not find such workload, but I can't do promise... > > Someday we'll find the perfect balance... likely the day before the sun > turns into a red giant and melts the earth. Won't take so long ;-) I would like to stop the regression on pgbench firstly, as PeterZ mentioned, if someone reported other regressions, we will know what is missing, if fix is possible, we fix it, if cost is too high, then I say we ignore the illegal income, after all, we could not benefit one in the cost of sacrifice others... I'd like to fix the problem ASAP, it's really a big, urgent problem on my point of view, but doesn't win enough attentions as I thought it will... The regression has been buried too long and hidden, if we miss the chance to correct the issue this time, it will no doubt been buried again... 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/ > -- 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/