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_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 A3E36C3A5A2 for ; Tue, 10 Sep 2019 12:58:01 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 7CAFE20863 for ; Tue, 10 Sep 2019 12:58:01 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7CAFE20863 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 173416B0006; Tue, 10 Sep 2019 08:58:01 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 123906B0007; Tue, 10 Sep 2019 08:58:01 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 03A6A6B0008; Tue, 10 Sep 2019 08:58:00 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0116.hostedemail.com [216.40.44.116]) by kanga.kvack.org (Postfix) with ESMTP id D7D496B0006 for ; Tue, 10 Sep 2019 08:58:00 -0400 (EDT) Received: from smtpin01.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with SMTP id 7F965824376D for ; Tue, 10 Sep 2019 12:58:00 +0000 (UTC) X-FDA: 75919013520.01.quill56_28c4f36aebc35 X-HE-Tag: quill56_28c4f36aebc35 X-Filterd-Recvd-Size: 2113 Received: from mx1.suse.de (mx2.suse.de [195.135.220.15]) by imf23.hostedemail.com (Postfix) with ESMTP for ; Tue, 10 Sep 2019 12:58:00 +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 6A8F8B863; Tue, 10 Sep 2019 12:57:58 +0000 (UTC) Date: Tue, 10 Sep 2019 14:57:56 +0200 From: Michal Hocko To: Stefan Priebe - Profihost AG Cc: "linux-mm@kvack.org" , l.roehrs@profihost.ag, cgroups@vger.kernel.org, Johannes Weiner , Vlastimil Babka Subject: Re: lot of MemAvailable but falling cache and raising PSI Message-ID: <20190910125756.GB2063@dhcp22.suse.cz> References: <2d04fc69-8fac-2900-013b-7377ca5fd9a8@profihost.ag> <20190909124950.GN27159@dhcp22.suse.cz> <10fa0b97-631d-f82b-0881-89adb9ad5ded@profihost.ag> <52235eda-ffe2-721c-7ad7-575048e2d29d@profihost.ag> <20190910082919.GL2063@dhcp22.suse.cz> <132e1fd0-c392-c158-8f3a-20e340e542f0@profihost.ag> <20190910090241.GM2063@dhcp22.suse.cz> <743a047e-a46f-32fa-1fe4-a9bd8f09ed87@profihost.ag> <20190910110741.GR2063@dhcp22.suse.cz> <364d4c2e-9c9a-d8b3-43a8-aa17cccae9c7@profihost.ag> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <364d4c2e-9c9a-d8b3-43a8-aa17cccae9c7@profihost.ag> 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 Tue 10-09-19 14:45:37, Stefan Priebe - Profihost AG wrote: > Hello Michal, > > ok this might take a long time. Attached you'll find a graph from a > fresh boot what happens over time (here 17 August to 30 August). Memory > Usage decreases as well as cache but slowly and only over time and days. > > So it might take 2-3 weeks running Kernel 5.3 to see what happens. No problem. Just make sure to collect the requested data from the time you see the actual problem. Btw. you try my very dumb scriplets to get an idea of how much memory gets reclaimed due to THP. -- Michal Hocko SUSE Labs