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=-0.4 required=3.0 tests=FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,PLING_QUERY, SPF_HELO_NONE,SPF_PASS 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 46C54C433DF for ; Sat, 13 Jun 2020 09:43:52 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id DBD1D20739 for ; Sat, 13 Jun 2020 09:43:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DBD1D20739 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=sina.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 7AFF88D00E2; Sat, 13 Jun 2020 05:43:51 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 786768D00A0; Sat, 13 Jun 2020 05:43:51 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 6EAD58D00E2; Sat, 13 Jun 2020 05:43:51 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0060.hostedemail.com [216.40.44.60]) by kanga.kvack.org (Postfix) with ESMTP id 589ED8D00A0 for ; Sat, 13 Jun 2020 05:43:51 -0400 (EDT) Received: from smtpin16.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 1147E357D for ; Sat, 13 Jun 2020 09:43:51 +0000 (UTC) X-FDA: 76923701862.16.flesh85_1a03d9e26de4 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin16.hostedemail.com (Postfix) with ESMTP id DD1E3100E690B for ; Sat, 13 Jun 2020 09:43:50 +0000 (UTC) X-HE-Tag: flesh85_1a03d9e26de4 X-Filterd-Recvd-Size: 1389 Received: from mail3-162.sinamail.sina.com.cn (mail3-162.sinamail.sina.com.cn [202.108.3.162]) by imf03.hostedemail.com (Postfix) with SMTP for ; Sat, 13 Jun 2020 09:43:48 +0000 (UTC) Received: from unknown (HELO localhost.localdomain)([114.253.229.236]) by sina.com with ESMTP id 5EE49FD00000CE94; Sat, 13 Jun 2020 17:43:45 +0800 (CST) X-Sender: hdanton@sina.com X-Auth-ID: hdanton@sina.com X-SMAIL-MID: 96496949283203 From: Hillf Danton To: Pavel Machek Cc: Vlastimil Babka , Markus Elfring , kernel list , Andrew Morton , mhocko@suse.cz, linux mm Subject: Re: 5.7-rc0: kswapd eats cpu during a disk test?! Date: Sat, 13 Jun 2020 17:43:35 +0800 Message-Id: <20200613094335.12620-1-hdanton@sina.com> In-Reply-To: <20200613064841.GA3818@amd> References: <20200531103431.GA28429@amd> <20200612224532.GA24103@amd> <20200613044738.11764-1-hdanton@sina.com> MIME-Version: 1.0 X-Rspamd-Queue-Id: DD1E3100E690B X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam02 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000029, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hi On Sat, 13 Jun 2020 08:48:41 +0200 Pavel Machek wrote: > > Do we know which original change is causing this? Any other ideas? Take a look at 264e90cc07f1 ("mm: only count actual rotations as LRU reclaim cost") please. Hillf