linux-kernel - Re: [PATCH v3 0/5] mm/memcg: Reduce kmemcache memory accounting overhead

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Message-ID: <20210415154736.snzrxq625p5l4lz2@gabell>
Date:   Thu, 15 Apr 2021 11:47:36 -0400
From:   Masayoshi Mizuma <msys.mizuma@...il.com>
To:     Waiman Long <llong@...hat.com>
Cc:     Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...nel.org>,
        Vladimir Davydov <vdavydov.dev@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Tejun Heo <tj@...nel.org>, Christoph Lameter <cl@...ux.com>,
        Pekka Enberg <penberg@...nel.org>,
        David Rientjes <rientjes@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        Vlastimil Babka <vbabka@...e.cz>, Roman Gushchin <guro@...com>,
        linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
        linux-mm@...ck.org, Shakeel Butt <shakeelb@...gle.com>,
        Muchun Song <songmuchun@...edance.com>,
        Alex Shi <alex.shi@...ux.alibaba.com>,
        Chris Down <chris@...isdown.name>,
        Yafang Shao <laoar.shao@...il.com>,
        Wei Yang <richard.weiyang@...il.com>,
        Xing Zhengjun <zhengjun.xing@...ux.intel.com>
Subject: Re: [PATCH v3 0/5] mm/memcg: Reduce kmemcache memory accounting
 overhead

On Thu, Apr 15, 2021 at 09:17:37AM -0400, Waiman Long wrote:
> I was focusing on your kernel module benchmark in testing my patch. I will
> try out your pgbench benchmark to see if there can be other tuning that can
> be done.

Thanks a lot!

> BTW, how many numa nodes does your test machine? I did my testing with a
> 2-socket system. The vmstat caching part may be less effective on systems
> with more numa nodes. I will try to find a larger 4-socket systems for
> testing.

The test machine has one node.

- Masa