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[82.17.115.212]) by smtp.gmail.com with ESMTPSA id m132sm11824941wmf.45.2021.03.26.10.00.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 26 Mar 2021 10:00:05 -0700 (PDT) Date: Fri, 26 Mar 2021 17:00:04 +0000 From: Aaron Tomlin To: Michal Hocko Cc: linux-mm@kvack.org, akpm@linux-foundation.org, linux-kernel@vger.kernel.org, Vlastimil Babka Subject: Re: [PATCH] mm/page_alloc: try oom if reclaim is unable to make forward progress Message-ID: <20210326170004.ahzt4xhe6msje7wl@ava.usersys.com> References: <20210315165837.789593-1-atomlin@redhat.com> <20210319172901.cror2u53b7caws3a@ava.usersys.com> <20210325210159.r565fvfitoqeuykp@ava.usersys.com> <20210326112254.jy5jkiwtgj3pqkt2@ava.usersys.com> MIME-Version: 1.0 In-Reply-To: Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=atomlin@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Disposition: inline X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 27141E16E215 X-Stat-Signature: 4atjnyaxw4dobkccknxu4npobwnku6wy Received-SPF: none (redhat.com>: No applicable sender policy available) receiver=imf13; identity=mailfrom; envelope-from=""; helo=us-smtp-delivery-124.mimecast.com; client-ip=216.205.24.124 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1616778016-979776 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 Fri 2021-03-26 16:36 +0100, Michal Hocko wrote: > We should be focusing on the compaction retry logic and see whether we > can have some "run away" scenarios there. Fair enough. > Seeing so many retries without compaction bailing out sounds like a bug > in that retry logic. Agreed - I will continue to look into this. Kind regards, -- Aaron Tomlin