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=-11.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 F3CFBC433DB for ; Fri, 25 Dec 2020 10:02:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BB86223130 for ; Fri, 25 Dec 2020 10:02:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729051AbgLYKCi (ORCPT ); Fri, 25 Dec 2020 05:02:38 -0500 Received: from out30-57.freemail.mail.aliyun.com ([115.124.30.57]:46543 "EHLO out30-57.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726322AbgLYKCi (ORCPT ); Fri, 25 Dec 2020 05:02:38 -0500 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R271e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04400;MF=alex.shi@linux.alibaba.com;NM=1;PH=DS;RN=9;SR=0;TI=SMTPD_---0UJjFIVO_1608890514; Received: from aliy80.localdomain(mailfrom:alex.shi@linux.alibaba.com fp:SMTPD_---0UJjFIVO_1608890514) by smtp.aliyun-inc.com(127.0.0.1); Fri, 25 Dec 2020 18:01:55 +0800 From: Alex Shi To: willy@infradead.org Cc: tim.c.chen@linux.intel.com, Konstantin Khlebnikov , Hugh Dickins , Yu Zhao , Michal Hocko , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH 0/4] pre sort pages on lruvec in pagevec Date: Fri, 25 Dec 2020 17:59:46 +0800 Message-Id: <1608890390-64305-1-git-send-email-alex.shi@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <20201126155553.GT4327@casper.infradead.org> References: <20201126155553.GT4327@casper.infradead.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This idea was tried on per memcg lru lock patchset v18, and had a good result, about 5%~20+% performance gain on lru lock busy benchmarks, like case-lru-file-readtwice. But on the latest kernel, I can not reproduce the result on my box. Also I can not reproduce Tim's performance gain too on my box. So I don't know if it's workable in some scenario, just sent out if someone has interesting... Alex Shi (4): mm/swap.c: pre-sort pages in pagevec for pagevec_lru_move_fn mm/swap.c: bail out early for no memcg and no numa mm/swap.c: extend the usage to pagevec_lru_add mm/swap.c: no sort if all page's lruvec are same Cc: Konstantin Khlebnikov Cc: Hugh Dickins Cc: Yu Zhao Cc: Michal Hocko Cc: Matthew Wilcox (Oracle) Cc: Andrew Morton Cc: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org mm/swap.c | 118 +++++++++++++++++++++++++++++++++++++++++------------- 1 file changed, 91 insertions(+), 27 deletions(-) -- 2.29.GIT