From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============3394839355813942536==" MIME-Version: 1.0 From: Huang, Ying To: lkp@lists.01.org Subject: Re: [mm, page_alloc] d0164adc89: -100.0% fsmark.app_overhead Date: Fri, 27 Nov 2015 09:14:52 +0800 Message-ID: <87oaegmeer.fsf@yhuang-dev.intel.com> In-Reply-To: <20151126132511.GG14880@techsingularity.net> List-Id: --===============3394839355813942536== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Hi, Mel, Mel Gorman writes: > On Thu, Nov 26, 2015 at 08:56:12AM +0800, kernel test robot wrote: >> FYI, we noticed the below changes on >> = >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master >> commit d0164adc89f6bb374d304ffcc375c6d2652fe67d ("mm, page_alloc: >> distinguish between being unable to sleep, unwilling to sleep and >> avoiding waking kswapd") >> = >> Note: the testing machine is a virtual machine with only 1G memory. >> = > > I'm not actually seeing any problem here. Is this a positive report or > am I missing something obvious? Sorry the email subject is generated automatically and I forget to change it to some meaningful stuff before sending out. From the testing result, we found the commit make the OOM possibility increased from 0% to 100% on this machine with small memory. I also added proc-vmstat information data too to help diagnose it. Best Regards, Huang, Ying --===============3394839355813942536==-- From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753712AbbK0BO6 (ORCPT ); Thu, 26 Nov 2015 20:14:58 -0500 Received: from mga02.intel.com ([134.134.136.20]:57104 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753635AbbK0BO4 (ORCPT ); Thu, 26 Nov 2015 20:14:56 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,349,1444719600"; d="scan'208";a="607761451" From: "Huang\, Ying" To: Mel Gorman Cc: lkp@01.org, LKML , Andrew Morton , Rik van Riel , Vitaly Wool , David Rientjes , Christoph Lameter , Johannes Weiner , Michal Hocko , Vlastimil Babka , Linus Torvalds Subject: Re: [lkp] [mm, page_alloc] d0164adc89: -100.0% fsmark.app_overhead References: <87ziy1a89f.fsf@yhuang-dev.intel.com> <20151126132511.GG14880@techsingularity.net> Date: Fri, 27 Nov 2015 09:14:52 +0800 In-Reply-To: <20151126132511.GG14880@techsingularity.net> (Mel Gorman's message of "Thu, 26 Nov 2015 13:25:11 +0000") Message-ID: <87oaegmeer.fsf@yhuang-dev.intel.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=ascii Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Mel, Mel Gorman writes: > On Thu, Nov 26, 2015 at 08:56:12AM +0800, kernel test robot wrote: >> FYI, we noticed the below changes on >> >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master >> commit d0164adc89f6bb374d304ffcc375c6d2652fe67d ("mm, page_alloc: >> distinguish between being unable to sleep, unwilling to sleep and >> avoiding waking kswapd") >> >> Note: the testing machine is a virtual machine with only 1G memory. >> > > I'm not actually seeing any problem here. Is this a positive report or > am I missing something obvious? Sorry the email subject is generated automatically and I forget to change it to some meaningful stuff before sending out. From the testing result, we found the commit make the OOM possibility increased from 0% to 100% on this machine with small memory. I also added proc-vmstat information data too to help diagnose it. Best Regards, Huang, Ying