linux-kernel - Re: [PATCH 00/14] per memcg lru

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Message-ID: <0f8e2bc0-96b4-f55a-51da-b53dac415dd7@linux.alibaba.com>
Date:   Mon, 26 Aug 2019 22:25:14 +0800
From:   Alex Shi <alex.shi@...ux.alibaba.com>
To:     Daniel Jordan <daniel.m.jordan@...cle.com>,
        cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Tejun Heo <tj@...nel.org>, Michal Hocko <mhocko@...nel.org>
Subject: Re: [PATCH 00/14] per memcg lru_lock



在 2019/8/22 下午11:20, Daniel Jordan 写道:
>>
>>>    https://git.kernel.org/pub/scm/linux/kernel/git/wfg/vm-scalability.git/tree/case-lru-file-readtwice>
>>> It's also synthetic but it stresses lru_lock more than just anon alloc/free.  It hits the page activate path, which is where we see this lock in our database, and if enough memory is configured lru_lock also gets stressed during reclaim, similar to [1].
>>
>> Thanks for the sharing, this patchset can not help the [1] case, since it's just relief the per container lock contention now.
> 
> I should've been clearer.  [1] is meant as an example of someone suffering from lru_lock during reclaim.  Wouldn't your series help per-memcg reclaim?

yes, I got your point, since the aim9 don't show much improvement, I am trying this case in containers.

Thanks
Alex