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[209.6.122.159]) by smtp.gmail.com with ESMTPSA id t17sm1959248qtr.42.2021.04.15.08.47.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Apr 2021 08:47:39 -0700 (PDT) Date: Thu, 15 Apr 2021 11:47:36 -0400 From: Masayoshi Mizuma To: Waiman Long Cc: Johannes Weiner , Michal Hocko , Vladimir Davydov , Andrew Morton , Tejun Heo , Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Vlastimil Babka , Roman Gushchin , linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-mm@kvack.org, Shakeel Butt , Muchun Song , Alex Shi , Chris Down , Yafang Shao , Wei Yang , Xing Zhengjun Subject: Re: [PATCH v3 0/5] mm/memcg: Reduce kmemcache memory accounting overhead Message-ID: <20210415154736.snzrxq625p5l4lz2@gabell> References: <20210414012027.5352-1-longman@redhat.com> <20210415032642.gfaevezaxoj4od3d@gabell> <12cba05a-e268-3a5d-69d7-feb00e36ef40@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <12cba05a-e268-3a5d-69d7-feb00e36ef40@redhat.com> X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 3595FA0003A0 X-Stat-Signature: 6npqsshythegunnc74tf9yh9m6yo5xwq Received-SPF: none (gmail.com>: No applicable sender policy available) receiver=imf07; identity=mailfrom; envelope-from=""; helo=mail-qv1-f42.google.com; client-ip=209.85.219.42 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1618501660-603935 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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