From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751927AbbC1EfA (ORCPT ); Sat, 28 Mar 2015 00:35:00 -0400 Received: from mail-ob0-f181.google.com ([209.85.214.181]:34281 "EHLO mail-ob0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750944AbbC1Ee5 (ORCPT ); Sat, 28 Mar 2015 00:34:57 -0400 MIME-Version: 1.0 In-Reply-To: <20150327141922.GC5481@dhcp22.suse.cz> References: <359c926bc85cdf79650e39f2344c2083002545bb.1427347966.git.viresh.kumar@linaro.org> <20150327141922.GC5481@dhcp22.suse.cz> Date: Sat, 28 Mar 2015 10:04:56 +0530 Message-ID: Subject: Re: [RFC] vmstat: Avoid waking up idle-cpu to service shepherd work From: Viresh Kumar To: Michal Hocko Cc: Andrew Morton , Johannes Weiner , Christoph Lameter , Linaro Kernel Mailman List , Linux Kernel Mailing List , vinmenon@codeaurora.org, shashim@codeaurora.org, Mel Gorman , dave@stgolabs.net, Konstantin Khlebnikov , Linux Memory Management List Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 27 March 2015 at 19:49, Michal Hocko wrote: > Wouldn't something like I was suggesting few months back > (http://article.gmane.org/gmane.linux.kernel.mm/127569) solve this > problem as well? Scheduler should be idle aware, no? I mean it shouldn't > wake up an idle CPU if the task might run on another one. Probably yes. Lets see what others have to say about it.. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oi0-f47.google.com (mail-oi0-f47.google.com [209.85.218.47]) by kanga.kvack.org (Postfix) with ESMTP id 5E07B6B0038 for ; Sat, 28 Mar 2015 00:34:57 -0400 (EDT) Received: by oicf142 with SMTP id f142so82480889oic.3 for ; Fri, 27 Mar 2015 21:34:57 -0700 (PDT) Received: from mail-ob0-f179.google.com (mail-ob0-f179.google.com. [209.85.214.179]) by mx.google.com with ESMTPS id om9si2289523oeb.76.2015.03.27.21.34.56 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 27 Mar 2015 21:34:56 -0700 (PDT) Received: by obvd1 with SMTP id d1so21773380obv.0 for ; Fri, 27 Mar 2015 21:34:56 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20150327141922.GC5481@dhcp22.suse.cz> References: <359c926bc85cdf79650e39f2344c2083002545bb.1427347966.git.viresh.kumar@linaro.org> <20150327141922.GC5481@dhcp22.suse.cz> Date: Sat, 28 Mar 2015 10:04:56 +0530 Message-ID: Subject: Re: [RFC] vmstat: Avoid waking up idle-cpu to service shepherd work From: Viresh Kumar Content-Type: text/plain; charset=UTF-8 Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko Cc: Andrew Morton , Johannes Weiner , Christoph Lameter , Linaro Kernel Mailman List , Linux Kernel Mailing List , vinmenon@codeaurora.org, shashim@codeaurora.org, Mel Gorman , dave@stgolabs.net, Konstantin Khlebnikov , Linux Memory Management List On 27 March 2015 at 19:49, Michal Hocko wrote: > Wouldn't something like I was suggesting few months back > (http://article.gmane.org/gmane.linux.kernel.mm/127569) solve this > problem as well? Scheduler should be idle aware, no? I mean it shouldn't > wake up an idle CPU if the task might run on another one. Probably yes. Lets see what others have to say about it.. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org