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=-2.5 required=3.0 tests=MAILING_LIST_MULTI,SPF_PASS, USER_AGENT_MUTT autolearn=ham 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 77DC3C04EB9 for ; Mon, 3 Dec 2018 11:57:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 421CA206B7 for ; Mon, 3 Dec 2018 11:57:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 421CA206B7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726448AbeLCL6W (ORCPT ); Mon, 3 Dec 2018 06:58:22 -0500 Received: from mx2.suse.de ([195.135.220.15]:60240 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725975AbeLCL6W (ORCPT ); Mon, 3 Dec 2018 06:58:22 -0500 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 79E4EAC66; Mon, 3 Dec 2018 11:57:36 +0000 (UTC) Date: Mon, 3 Dec 2018 12:57:36 +0100 From: Michal Hocko To: Xunlei Pang Cc: Roman Gushchin , Johannes Weiner , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH 3/3] mm/memcg: Avoid reclaiming below hard protection Message-ID: <20181203115736.GQ31738@dhcp22.suse.cz> References: <20181203080119.18989-1-xlpang@linux.alibaba.com> <20181203080119.18989-3-xlpang@linux.alibaba.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181203080119.18989-3-xlpang@linux.alibaba.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon 03-12-18 16:01:19, Xunlei Pang wrote: > When memcgs get reclaimed after its usage exceeds min, some > usages below the min may also be reclaimed in the current > implementation, the amount is considerably large during kswapd > reclaim according to my ftrace results. And here again. Describe the setup and the behavior please? -- Michal Hocko SUSE Labs