From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mout.gmx.net (mout.gmx.net [212.227.15.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 774B772 for ; Sun, 28 Nov 2021 11:40:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1638099593; bh=U5vBJPo7borxDUYLvOOfeoJJZMpeXlH9wqwpUhA12Sg=; h=X-UI-Sender-Class:Subject:From:To:Cc:Date:In-Reply-To:References; b=HLyTw5WxYbk+fkhC8eui+sYzC9JSQ//YRgOVhCdiLQTG9H1hVtaEuLoDEQXuH+KJ1 zqgXOf1+KXD/DgT0jvic5OBPkLRZhWnEj0Nmdq1RXuYCpZyha2v7pg/5fAYPfXWAOt b0/daOiIJX5C7oKttG75wsIuIZjtuqbukb5Y3zMU= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from homer.fritz.box ([185.221.150.210]) by mail.gmx.net (mrgmx005 [212.227.17.190]) with ESMTPSA (Nemesis) id 1MVN6j-1n0Gys2EHX-00SNIL; Sun, 28 Nov 2021 12:39:53 +0100 Message-ID: <941f378e1ea2b32cac0adee1e81637ab6d001f1e.camel@gmx.de> Subject: Re: [PATCH 1/1] mm: vmscan: Reduce throttling due to a failure to make progress From: Mike Galbraith To: Alexey Avramov , Mel Gorman Cc: Andrew Morton , Michal Hocko , Vlastimil Babka , Rik van Riel , Darrick Wong , regressions@lists.linux.dev, Linux-fsdevel , Linux-MM , LKML Date: Sun, 28 Nov 2021 12:39:51 +0100 In-Reply-To: <252cd5acd9bf6588ec87ce02884925c737b6a8b7.camel@gmx.de> References: <20211125151853.8540-1-mgorman@techsingularity.net> <20211127011246.7a8ac7b8@mail.inbox.lv> <20211126165211.GL3366@techsingularity.net> <20211128042635.543a2d04@mail.inbox.lv> <252cd5acd9bf6588ec87ce02884925c737b6a8b7.camel@gmx.de> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.42.1 Precedence: bulk X-Mailing-List: regressions@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:gkJ6likBbom3JbAxnrzHJYF3PmTbT8ovSN1QHsR8IdkC+Eep2Sp f34hU1l06wx3zlgxBefHCOMZHgZjBMdQFscuTcLF+bFls2DmcskTnECyYIUE3ZtrumTi6wJ p/7upRKJjPhywLYQmsBZViGJei3fplcha8zCt27xHabG+NGs5LJHsHXPRYRFeILoYpRZq6p OcsiMoIetx4dkzra0hBMQ== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:glpZMHVX8vs=:YCYA40Ri/MIKsfJCRM512B uTmAyYlSt46EvWJyLYgYRb7IjIw3+FejpNDOacc4zrwHTwAYeBprK+rqSquy8krS88o7ZJqsE xQdJyB+L/4tGhejK9c7ApiCxmxk8k/WO/suNOLKrPhfZDOWKjffrTlRodbmpGYjBbichhAx1f dqfLVNYSAypRp/JXsRMQUv2ciU7TLaI2+POXXoGXHqfs5jGsFS3MtOvQX9D9fhwRqHAHOtvEo FgX0H+ZqGt07IK5nYlPr+yp257SJqhQbhYVjhoDVsNQNMyN3plu9OZJaotLN0obzAgI8ceb/K dla3XPR+Tyl2G+CDubJejYoBF0gWB/K9d8ikFQBAr9nRa/zPFyQouwAHpmESY4CkTk+KzBoeR NEJCBv1jknXv8EbKjgxLQTOX3PpPMLRm2tyKT7RPdxwHpj71DkzcC1dQF2KuAqlItkvr6JQ6T YJuNg0PC7pKmK+QptlB5vGnRjoMkGcaUA5lhKNLNrJH/5D5ZcJJMi0R1p7ATVzCmcr7rtS7BO 228f4puhmk+pdvwT2/yeLS9wnRHRTV7ReSE/Peu9Fk9zqQDltQax2hpbI6Nde7LKW0WaCpYKQ GYyBviUPj0+mgswd4/XHn3LUjFpGyjl5iPbfl0WH9MeVjNOWsaT/ajQhrzxTL24THZ2f4L9p1 G7QUuxAZDs8Jn16+l4ipnHgkypsyBb2/JIHutZsZ0D4T69pCYGx6hFDRqs5glX5cog7oq1YFH 6FtF7FzfOXZSapKPNENnHWdf161+JHhbsNi24q3w/I0FS8aLGwSFTXTfHvL6az8iak7grvm/3 RrYQxuCt2yV402IGqVDahEhZNlChhi8QQmij9J9Xyi0Sq3aqHbTqXSE63PhKx+hYn+fN7C6ZL /L8JVAgrLmV4OiVMlIWgoQc/soQvwrhDmDJpK9m5r31/V4IXclKg1shDgblJ2I9B8JslgCqB/ znfLGjCjdltQ7rxHQL6kzdi3vhoUuEZa+UdoxT4DRLeLiQt6TGM8EnwkzmAm9bIbChHaLpLXD /b/xPt89be+E2iBGEJG+inmZmU2brz2jlW5V/0AZtcH8nEyHRRdByU5pU8X3BMcPgjeLaAK0h 74bmdPonySht7A= On Sun, 2021-11-28 at 11:00 +0100, Mike Galbraith wrote: > On Sun, 2021-11-28 at 04:26 +0900, Alexey Avramov wrote: > > I will present the results of the new tests here. > > > > TLDR; > > =3D=3D=3D=3D=3D > > No one Mel's patch doesn't prevent stalls in my tests. > > Seems there may be a problem with the THROTTLE_WRITEBACK bits.. Disregard. I backed hacklet out again, and one-liner that had ground my box to fine powder was harmless. Hmm. -Mike >