linux-kernel - Re: [PATCH mm] introduce reverse buddy concept to reduce buddy fragment

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Message-ID: <b7ae6f54-5a67-8580-9ced-3ddbe5bd16af@huawei.com>
Date:   Tue, 4 Jul 2017 15:00:08 +0800
From:   zhouxianrong <zhouxianrong@...wei.com>
To:     Michal Hocko <mhocko@...nel.org>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <akpm@...ux-foundation.org>, <vbabka@...e.cz>,
        <alexander.h.duyck@...el.com>, <mgorman@...e.de>,
        <l.stach@...gutronix.de>, <vdavydov.dev@...il.com>,
        <hannes@...xchg.org>, <minchan@...nel.org>, <npiggin@...il.com>,
        <kirill.shutemov@...ux.intel.com>, <gi-oh.kim@...fitbricks.com>,
        <luto@...nel.org>, <keescook@...omium.org>, <mark.rutland@....com>,
        <mingo@...nel.org>, <heiko.carstens@...ibm.com>,
        <iamjoonsoo.kim@....com>, <rientjes@...gle.com>,
        <ming.ling@...eadtrum.com>, <jack@...e.cz>,
        <ebru.akagunduz@...il.com>, <bigeasy@...utronix.de>,
        <Mi.Sophia.Wang@...wei.com>, <zhouxiyu@...wei.com>,
        <weidu.du@...wei.com>, <fanghua3@...wei.com>,
        <won.ho.park@...wei.com>
Subject: Re: [PATCH mm] introduce reverse buddy concept to reduce buddy
 fragment

i do the test again. after minutes i tell you the result.

On 2017/7/4 14:52, Michal Hocko wrote:
> On Tue 04-07-17 09:21:00, zhouxianrong wrote:
>> the test was done as follows:
>>
>> 1. the environment is android 7.0 and kernel is 4.1 and managed memory is 3.5GB
>
> There have been many changes in the compaction proper since than. Do you
> see the same problem with the current upstream kernel?
>
>> 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
>
> How stable are those results?
>