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=-7.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 DA2E0C47082 for ; Thu, 3 Jun 2021 22:22:16 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 909CC61402 for ; Thu, 3 Jun 2021 22:22:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 909CC61402 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chrisdown.name Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id F23296B006C; Thu, 3 Jun 2021 18:22:15 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id ED2AD6B006E; Thu, 3 Jun 2021 18:22:15 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D741F6B0070; Thu, 3 Jun 2021 18:22:15 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0238.hostedemail.com [216.40.44.238]) by kanga.kvack.org (Postfix) with ESMTP id A76EC6B006C for ; Thu, 3 Jun 2021 18:22:15 -0400 (EDT) Received: from smtpin26.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 3B9D4BF03 for ; Thu, 3 Jun 2021 22:22:15 +0000 (UTC) X-FDA: 78213837030.26.614B75A Received: from mail-wm1-f51.google.com (mail-wm1-f51.google.com [209.85.128.51]) by imf19.hostedemail.com (Postfix) with ESMTP id A40BD9001E7A for ; Thu, 3 Jun 2021 22:21:53 +0000 (UTC) Received: by mail-wm1-f51.google.com with SMTP id s70-20020a1ca9490000b02901a589651424so226985wme.0 for ; Thu, 03 Jun 2021 15:22:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chrisdown.name; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=5Giwa3OXiTxnf7+h+zgCHo40wQ5IV9sd1571QWUg2U8=; b=lTxNVyTx7nKigb7Wd9BkfAGfjatMGfpv2hP3UCQG70bIX69WDDqZZh0Yxm50Y9gnHy 43CAdxmNNyAzQhpDWc/0EeyJVWKBFclFGuC3CAv2Qnf+N58Ip6It0BTz+3qvZOboPVRp bziZDiTm9/JPouEqt4p/TrisAN0k80Shrm+cE= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=5Giwa3OXiTxnf7+h+zgCHo40wQ5IV9sd1571QWUg2U8=; b=FWoj9tYj8ZxVGtgmQHat22KDCSg8Pv89zrC8zzV93LW1GAS9XTlkY9Up2dmSbPF3q0 q+7RF1e/5OHsdMbh+8V3BND0/1eaNIr23H3F0ZAxybwPVDQt4SCMAi+/LfUpk+5LfKOg DqQebH5zC3YNsyuLAKPHNfi70DD0DB1YQauysa/DYUIA1CIO3ECv7WWX2wG47zj7OAtc mkxFLZhy+tprWnFbMrp8QQ5SB5xJJdDW5geX1IkzDb/QhkuP7mKFrPAx3KLv1VJurMmT iQs0sqtOIvTmmdavqWMHYU23kMUCkxSNQzZTbxB6H9A0iIVbJaK4hHsSVbBtJ40JtsYl OprA== X-Gm-Message-State: AOAM533IFDTi4dswArmu61zQ+lGGo4Yf/SbMEFCvVZWuD+2b0j/H7L8f tPE8NEBS/DcdJIinZs/hP67SPA== X-Google-Smtp-Source: ABdhPJyRDOhOeXUZm3Ypsl4SV/Q1ZYyJCfs2KeiywsYig+bQI0JUqNSk/Qlhcza0iwwgR5xzI2JYMg== X-Received: by 2002:a1c:7402:: with SMTP id p2mr551664wmc.88.1622758929381; Thu, 03 Jun 2021 15:22:09 -0700 (PDT) Received: from localhost ([2a01:4b00:8432:8a00:63de:dd93:20be:f460]) by smtp.gmail.com with ESMTPSA id j18sm4632019wrw.30.2021.06.03.15.22.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Jun 2021 15:22:08 -0700 (PDT) Date: Thu, 3 Jun 2021 23:22:08 +0100 From: Chris Down To: Johannes Weiner Cc: gardotd426@gmail.com, Andrew Morton , bugzilla-daemon@bugzilla.kernel.org, linux-mm@kvack.org Subject: Re: [Bug 213299] New: kswapd Regression as of 5.13-rc3, eats 100% of CPU for no reason Message-ID: References: <20210531143329.87a1220aeb620fd253060e75@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: User-Agent: Mutt/2.0.7 (481f3800) (2021-05-04) X-Rspamd-Queue-Id: A40BD9001E7A Authentication-Results: imf19.hostedemail.com; dkim=pass header.d=chrisdown.name header.s=google header.b=lTxNVyTx; dmarc=pass (policy=none) header.from=chrisdown.name; spf=pass (imf19.hostedemail.com: domain of chris@chrisdown.name designates 209.85.128.51 as permitted sender) smtp.mailfrom=chris@chrisdown.name X-Rspamd-Server: rspam03 X-Stat-Signature: unf3pw3hecy8wuntyuh94irizrxqgeou X-HE-Tag: 1622758913-156784 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: Can you also please show /proc/pid/stack for the offending kswapd, and what your watermark settings are?