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[109.81.95.13]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a7213f474e0sm273562966b.190.2024.06.24.09.46.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Jun 2024 09:46:43 -0700 (PDT) Date: Mon, 24 Jun 2024 18:46:42 +0200 From: Michal Hocko To: Waiman Long Cc: Roman Gushchin , Johannes Weiner , Muchun Song , Andrew Morton , Jonathan Corbet , Shakeel Butt , linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-mm@kvack.org, Alex Kalenyuk , Peter Hunt , linux-doc@vger.kernel.org Subject: Re: [PATCH] memcg: Add a new sysctl parameter for automatically setting memory.high Message-ID: References: <20240623204514.1032662-1-longman@redhat.com> <77d4299e-e1ee-4471-9b53-90957daa984d@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 36CA240017 X-Stat-Signature: wkzr7gssepna9d8fzcdjiw4i7is5ebew X-Rspam-User: X-HE-Tag: 1719247604-526579 X-HE-Meta: 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 1v1jelH5 ZyS656Wv9DQsSGi218F5qKqiOdBSTzwhlUAE36jPck50QPwhLMjE1c+rv01g59gZJNW168pQE0atngwAijSoFJkcLly11vE4eKFNxZERvzLXEibrdohvp4//rr5BeBhLQU7INP54tEP9yRL2SYYF1D1Iql4JcoupG42ekJXUw1T6/EivWvRa10mp0fKMEntOz5cIq7sFnBhkRNAIakdAb+lgMNzPjc7TgQfYgXumqJUwrdae8VX9uatlk5h8YbBE+EP562/dwqwIIO/wrG6biskzLEcpy8+fUQeNPPDRzDrejrbViWQ4YAHOsdg== 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: List-Subscribe: List-Unsubscribe: On Mon 24-06-24 12:33:27, Waiman Long wrote: > I also trace back the OOM problem to commit 14aa8b2d5c2e ("mm/mglru: don't > sync disk for each aging cycle") in the MGLRU code. So setting memory.high > automatically is one way to avoid premature OOM. That is the motivation > behind this patch. Please report this. -- Michal Hocko SUSE Labs