From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6C684C3A59B for ; Mon, 19 Aug 2019 07:31:33 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 0A7252086C for ; Mon, 19 Aug 2019 07:31:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0A7252086C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 5F4376B000E; Mon, 19 Aug 2019 03:31:32 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 5A54E6B0010; Mon, 19 Aug 2019 03:31:32 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4E2756B0266; Mon, 19 Aug 2019 03:31:32 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0179.hostedemail.com [216.40.44.179]) by kanga.kvack.org (Postfix) with ESMTP id 2A9716B000E for ; Mon, 19 Aug 2019 03:31:32 -0400 (EDT) Received: from smtpin28.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with SMTP id D43C0181AC9AE for ; Mon, 19 Aug 2019 07:31:31 +0000 (UTC) X-FDA: 75838357182.28.peace11_81bc52fe9b95f X-HE-Tag: peace11_81bc52fe9b95f X-Filterd-Recvd-Size: 1619 Received: from mx1.suse.de (mx2.suse.de [195.135.220.15]) by imf16.hostedemail.com (Postfix) with ESMTP for ; Mon, 19 Aug 2019 07:31:31 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id CD5C2AF7C; Mon, 19 Aug 2019 07:31:29 +0000 (UTC) Date: Mon, 19 Aug 2019 09:31:28 +0200 From: Michal Hocko To: Yafang Shao Cc: akpm@linux-foundation.org, linux-mm@kvack.org, Roman Gushchin , Randy Dunlap , Johannes Weiner , Vladimir Davydov , Tetsuo Handa Subject: Re: [PATCH] mm, memcg: skip killing processes under memcg protection at first scan Message-ID: <20190819073128.GB3111@dhcp22.suse.cz> References: <1566102294-14803-1-git-send-email-laoar.shao@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1566102294-14803-1-git-send-email-laoar.shao@gmail.com> User-Agent: Mutt/1.10.1 (2018-07-13) 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 Sun 18-08-19 00:24:54, Yafang Shao wrote: > In the current memory.min design, the system is going to do OOM instead > of reclaiming the reclaimable pages protected by memory.min if the > system is lack of free memory. While under this condition, the OOM > killer may kill the processes in the memcg protected by memory.min. Could you be more specific about the configuration that leads to this situation? -- Michal Hocko SUSE Labs