linux-kernel - Re: [PATCH v18 00/32] per memcg lru

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Message-Id: <20200824114204.cc796ca182db95809dd70a47@linux-foundation.org>
Date:   Mon, 24 Aug 2020 11:42:04 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Alex Shi <alex.shi@...ux.alibaba.com>
Cc:     mgorman@...hsingularity.net, tj@...nel.org, hughd@...gle.com,
        khlebnikov@...dex-team.ru, daniel.m.jordan@...cle.com,
        willy@...radead.org, hannes@...xchg.org, lkp@...el.com,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        cgroups@...r.kernel.org, shakeelb@...gle.com,
        iamjoonsoo.kim@....com, richard.weiyang@...il.com,
        kirill@...temov.name, alexander.duyck@...il.com,
        rong.a.chen@...el.com, mhocko@...e.com, vdavydov.dev@...il.com,
        shy828301@...il.com
Subject: Re: [PATCH v18 00/32] per memcg lru_lock

On Mon, 24 Aug 2020 20:54:33 +0800 Alex Shi <alex.shi@...ux.alibaba.com> wrote:

> The new version which bases on v5.9-rc2. The first 6 patches was picked into
> linux-mm, and add patch 25-32 that do some further post optimization.

32 patches, version 18.  That's quite heroic.  I'm unsure whether I
should merge it up at this point - what do people think?

> 
> Following Daniel Jordan's suggestion, I have run 208 'dd' with on 104
> containers on a 2s * 26cores * HT box with a modefied case:
> https://git.kernel.org/pub/scm/linux/kernel/git/wfg/vm-scalability.git/tree/case-lru-file-readtwice
> With this patchset, the readtwice performance increased about 80%
> in concurrent containers.

That's rather a slight amount of performance testing for a huge
performance patchset!  Is more detailed testing planned?