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Tue, 15 Dec 2020 16:48:55 -0800 (PST) Received: from google.com ([2620:15c:183:200:7220:84ff:fe09:2d90]) by smtp.gmail.com with ESMTPSA id r8sm106675ilb.75.2020.12.15.16.48.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 15 Dec 2020 16:48:54 -0800 (PST) Date: Tue, 15 Dec 2020 17:48:50 -0700 From: Yu Zhao To: Alex Shi Cc: Andrew Morton , Hugh Dickins , Michal Hocko , Johannes Weiner , Vladimir Davydov , Roman Gushchin , Vlastimil Babka , Matthew Wilcox , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 00/11] mm: lru related cleanups Message-ID: References: <20201207220949.830352-1-yuzhao@google.com> <54bdbe42-023a-4e32-9b94-173d0ad2dc16@linux.alibaba.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <54bdbe42-023a-4e32-9b94-173d0ad2dc16@linux.alibaba.com> 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, Dec 10, 2020 at 05:28:08PM +0800, Alex Shi wrote: > Hi Yu, > > btw, after this patchset, to do cacheline alignment on each of lru lists > are possible, so did you try that to see performance changes? I ran a Chrome-based performance benchmark without memcg and with one memcg many times. The good news is I didn't see any regressions for these basic cases. But I can't say how much improvements there would be with hundreds of memcgs.