linux-kernel - Re: [PATCH v5 2/2] mm/memcontrol.c: Reduce reclaim retries in mem_cgroup_resize

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Date:   Thu, 22 Feb 2018 19:01:58 +0300
From:   Andrey Ryabinin <aryabinin@...tuozzo.com>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Shakeel Butt <shakeelb@...gle.com>,
        Cgroups <cgroups@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux MM <linux-mm@...ck.org>,
        Johannes Weiner <hannes@...xchg.org>,
        Vladimir Davydov <vdavydov.dev@...il.com>
Subject: Re: [PATCH v5 2/2] mm/memcontrol.c: Reduce reclaim retries in
 mem_cgroup_resize_limit()



On 02/22/2018 06:44 PM, Michal Hocko wrote:
> On Thu 22-02-18 18:38:11, Andrey Ryabinin wrote:

>>>>
>>>> with the patch:
>>>> best: 1.04  secs, 9.7G reclaimed
>>>> worst: 2.2 secs, 16G reclaimed.
>>>>
>>>> without:
>>>> best: 5.4 sec, 35G reclaimed
>>>> worst: 22.2 sec, 136G reclaimed
>>>
>>> Could you also compare how much memory do we reclaim with/without the
>>> patch?
>>>
>>
>> I did and I wrote the results. Please look again.
> 
> I must have forgotten. Care to point me to the message-id?

The results are quoted right above, literally above. Raise your eyes up. message-id 0927bcab-7e2c-c6f9-d16a-315ac436ba98@...tuozzo.com

I write it here again:

with the patch:
 best: 9.7G reclaimed
 worst: 16G reclaimed

without:
 best: 35G reclaimed
 worst: 136G reclaimed

Or you asking about something else? If so, I don't understand what you want.

> 20180119132544.19569-2-aryabinin@...tuozzo.com doesn't contain this
> information and a quick glance over the follow up thread doesn't have
> anything as well. Ideally, this should be in the patch changelog, btw.
> 

Well, I did these measurements only today and I don't have time machine.