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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id D2948C43334 for ; Tue, 7 Jun 2022 22:48:12 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 341626B0073; Tue, 7 Jun 2022 18:48:12 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 2EFAE6B0074; Tue, 7 Jun 2022 18:48:12 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 1B7346B0075; Tue, 7 Jun 2022 18:48:12 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id 08A9A6B0073 for ; Tue, 7 Jun 2022 18:48:12 -0400 (EDT) Received: from smtpin26.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id 2510535598 for ; Tue, 7 Jun 2022 22:48:11 +0000 (UTC) X-FDA: 79552929582.26.97CACF7 Received: from mail-vs1-f45.google.com (mail-vs1-f45.google.com [209.85.217.45]) by imf10.hostedemail.com (Postfix) with ESMTP id CCE9FC0004 for ; Tue, 7 Jun 2022 22:48:10 +0000 (UTC) Received: by mail-vs1-f45.google.com with SMTP id f13so18094608vsp.1 for ; Tue, 07 Jun 2022 15:48:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=84rrjzvQjetXZ9VxR83Ek9L02yu9vPluECSHMeZ4QYY=; b=Njye/HHMhIRsWQNQTrirOwnYbtGHVMcDWltSM3mtC4vv0KfiUIELi4iWQiWjKOh/cr 44afjRMkUuYSMaFGLOnk7jgyE4NaLqenvcaxIrJv2lD2CiihB9qbYNBOJghHCVnw+57c NpVo6B4PFmYArqCVJ9uEI8cMFi6NXJrAkBsQvUBBD+Asa+YdgJyYYQ2JK5P0TKEE4lUN JMWF98q1BGd+3Hnvoox8XQZdYYDPXfsJbm3Hl4xoS9vycwdkv9XjmJbgdyYyo5jJ/rdy m13A/2FB6qW9ce14YXBzzlr3UdW2zV98TVehhcolktO2macsN3Qd6K+CQeRUPrXbt60q uYCA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=84rrjzvQjetXZ9VxR83Ek9L02yu9vPluECSHMeZ4QYY=; b=lkEfixE443s0N9J9xb5W4CosZGthvyNdEFxODo4jwCkyIctIPbapcfgJR1tRS37Gdm 4sJwX5aqjYpG1Ct1pGnDDk3iO/0LUvBNl3pztxZsEKCeSTk/wt2p3Zpn/PLVG/oeXxuh uW70SVvkH2cjKCkntYOa1PdZQQCw9999A7u50brd1GGG1gB1zUC/ue0iZpy3esmGaUfB UjHVbu1eqSXyiCMcqDDhF4K0llQ62uZ+ZIY3bLHcsJWe5G3dMwO3oYUdSnWAtXZyGZDm 42n4dcJApvUBA5KBV8zeP7EFyzE2RHRs/jTw9l2OQMU1ahIXiJA2PG7o0ldOi4rhA+Y5 8MDg== X-Gm-Message-State: AOAM532nW+FF766ekIT1EWlwgkKJ3TEBUA2jPGnnsNwPP1/lqPeEqT63 MIcR1MbX0S09/n8WL2OSKK8sBFtDKkL56aGzcJR5XQ== X-Google-Smtp-Source: ABdhPJzJGCLJjLlIACMJEiC10VEeYjtSEqkHHTTzYPcq6Bazd/VJ2+cIkHbjj4CZNkCrGD9oNsNuEO3KROdXMuwrwfE= X-Received: by 2002:a05:6102:3e23:b0:34b:b6b0:2ae7 with SMTP id j35-20020a0561023e2300b0034bb6b02ae7mr7020910vsv.81.1654642089951; Tue, 07 Jun 2022 15:48:09 -0700 (PDT) MIME-Version: 1.0 References: <20220518014632.922072-1-yuzhao@google.com> In-Reply-To: From: Yu Zhao Date: Tue, 7 Jun 2022 16:47:33 -0600 Message-ID: Subject: Re: [PATCH v11 00/14] Multi-Gen LRU Framework To: Jens Axboe Cc: Andrew Morton , Linux-MM , Andi Kleen , Aneesh Kumar , Catalin Marinas , Dave Hansen , Hillf Danton , Johannes Weiner , Jonathan Corbet , Linus Torvalds , Matthew Wilcox , Mel Gorman , Michael Larabel , Michal Hocko , Mike Rapoport , Peter Zijlstra , Tejun Heo , Vlastimil Babka , Will Deacon , Linux ARM , "open list:DOCUMENTATION" , linux-kernel , "the arch/x86 maintainers" , Kernel Page Reclaim v2 Content-Type: text/plain; charset="UTF-8" X-Stat-Signature: icmgu6ejydmpaoqxkgwii1hw4h5o1zf6 Authentication-Results: imf10.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b="Njye/HHM"; dmarc=pass (policy=reject) header.from=google.com; spf=pass (imf10.hostedemail.com: domain of yuzhao@google.com designates 209.85.217.45 as permitted sender) smtp.mailfrom=yuzhao@google.com X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: CCE9FC0004 X-HE-Tag: 1654642090-800228 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, May 17, 2022 at 8:05 PM Jens Axboe wrote: > > On 5/17/22 7:46 PM, Yu Zhao wrote: > > TLDR > > ==== > > The current page reclaim is too expensive in terms of CPU usage and it > > often makes poor choices about what to evict. This patchset offers an > > alternative solution that is performant, versatile and > > straightforward. > > Where's the changelog since v10? Apologies for my laziness. The changes are mainly nits, e.g., small refactorings, additional comments, etc.; relatively major ones are: * VM_BUG_ON() -> VM_WARN_ON_ONCE() * Removed `depends on !MAXSMP` There are no bug fixes or structural changes in v11. I do have a bug fix [1] queued for the coming v12, which I have been benchmarking on top of 5.19-rc1. So far I see no improvements or regressions, compared with v10 on top of 5.18-rc1. [1] https://forum.armbian.com/topic/20018-mglru-patches-to-bring-down-kswapd-cpu-usage