Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752078AbdGDBVr (ORCPT ); Mon, 3 Jul 2017 21:21:47 -0400 Received: from szxga03-in.huawei.com ([45.249.212.189]:8422 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751644AbdGDBVq (ORCPT ); Mon, 3 Jul 2017 21:21:46 -0400 Subject: Re: [PATCH mm] introduce reverse buddy concept to reduce buddy fragment To: Michal Hocko References: <1498821941-55771-1-git-send-email-zhouxianrong@huawei.com> <20170703074829.GD3217@dhcp22.suse.cz> <20170703153307.GA11848@dhcp22.suse.cz> CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , From: zhouxianrong Message-ID: <5c9cf499-6f71-6dda-6378-7e9f27e6cd70@huawei.com> Date: Tue, 4 Jul 2017 09:21:00 +0800 User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:45.0) Gecko/20100101 Thunderbird/45.0 MIME-Version: 1.0 In-Reply-To: <20170703153307.GA11848@dhcp22.suse.cz> Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [10.142.145.228] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A090206.595AED8E.0084,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2014-11-16 11:51:01, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 2a6c64ff8f8374005cd30e149ad1ba87 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 544 Lines: 14 the test was done as follows: 1. the environment is android 7.0 and kernel is 4.1 and managed memory is 3.5GB 2. every 4s startup one apk, total 100 more apks need to startup 3. after finishing step 2, sample buddyinfo once and get the result On 2017/7/3 23:33, Michal Hocko wrote: > On Mon 03-07-17 20:02:16, zhouxianrong wrote: > [...] >> from above i think after applying the patch the result is better. > > You haven't described your testing methodology, nor the workload that was > tested. As such this data is completely meaningless. >