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=-5.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,UNPARSEABLE_RELAY,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 BB4C8C433DF for ; Fri, 17 Jul 2020 05:25:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 94E7E206BE for ; Fri, 17 Jul 2020 05:25:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726686AbgGQFZ2 (ORCPT ); Fri, 17 Jul 2020 01:25:28 -0400 Received: from out30-54.freemail.mail.aliyun.com ([115.124.30.54]:52663 "EHLO out30-54.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725811AbgGQFZ1 (ORCPT ); Fri, 17 Jul 2020 01:25:27 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R191e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01f04427;MF=alex.shi@linux.alibaba.com;NM=1;PH=DS;RN=18;SR=0;TI=SMTPD_---0U2ysVL5_1594963521; Received: from IT-FVFX43SYHV2H.local(mailfrom:alex.shi@linux.alibaba.com fp:SMTPD_---0U2ysVL5_1594963521) by smtp.aliyun-inc.com(127.0.0.1); Fri, 17 Jul 2020 13:25:23 +0800 Subject: Re: [PATCH v16 00/22] per memcg lru_lock To: Alexander Duyck Cc: Andrew Morton , Mel Gorman , Tejun Heo , Hugh Dickins , Konstantin Khlebnikov , Daniel Jordan , Yang Shi , Matthew Wilcox , Johannes Weiner , kbuild test robot , linux-mm , LKML , cgroups@vger.kernel.org, Shakeel Butt , Joonsoo Kim , Wei Yang , "Kirill A. Shutemov" References: <1594429136-20002-1-git-send-email-alex.shi@linux.alibaba.com> From: Alex Shi Message-ID: <57c619e7-da7e-198e-3de8-530bf19b9450@linux.alibaba.com> Date: Fri, 17 Jul 2020 13:24:28 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 在 2020/7/16 下午10:11, Alexander Duyck 写道: >> Thanks for Testing support from Intel 0day and Rong Chen, Fengguang Wu, >> and Yun Wang. Hugh Dickins also shared his kbuild-swap case. Thanks! > Hi Alex, > > I think I am seeing a regression with this patch set when I run the > will-it-scale/page_fault3 test. Specifically the processes result is > dropping from 56371083 to 43127382 when I apply these patches. > > I haven't had a chance to bisect and figure out what is causing it, > and wanted to let you know in case you are aware of anything specific > that may be causing this. Thanks a lot for the info! Actually, the patch 17th, and patch 13th may changed performance a little, like the 17th, intel LKP found vm-scalability.throughput 68.0% improvement, and stress-ng.remap.ops_per_sec -76.3% regression, or stress-ng.memfd.ops_per_sec +23.2%. etc. This kind performance interference is known and acceptable. Thanks Alex From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alex Shi Subject: Re: [PATCH v16 00/22] per memcg lru_lock Date: Fri, 17 Jul 2020 13:24:28 +0800 Message-ID: <57c619e7-da7e-198e-3de8-530bf19b9450@linux.alibaba.com> References: <1594429136-20002-1-git-send-email-alex.shi@linux.alibaba.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: Sender: cgroups-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: Content-Type: text/plain; charset="utf-8" To: Alexander Duyck Cc: Andrew Morton , Mel Gorman , Tejun Heo , Hugh Dickins , Konstantin Khlebnikov , Daniel Jordan , Yang Shi , Matthew Wilcox , Johannes Weiner , kbuild test robot , linux-mm , LKML , cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Shakeel Butt , Joonsoo Kim , Wei Yang , "Kirill A. Shutemov" 在 2020/7/16 下午10:11, Alexander Duyck 写道: >> Thanks for Testing support from Intel 0day and Rong Chen, Fengguang Wu, >> and Yun Wang. Hugh Dickins also shared his kbuild-swap case. Thanks! > Hi Alex, > > I think I am seeing a regression with this patch set when I run the > will-it-scale/page_fault3 test. Specifically the processes result is > dropping from 56371083 to 43127382 when I apply these patches. > > I haven't had a chance to bisect and figure out what is causing it, > and wanted to let you know in case you are aware of anything specific > that may be causing this. Thanks a lot for the info! Actually, the patch 17th, and patch 13th may changed performance a little, like the 17th, intel LKP found vm-scalability.throughput 68.0% improvement, and stress-ng.remap.ops_per_sec -76.3% regression, or stress-ng.memfd.ops_per_sec +23.2%. etc. This kind performance interference is known and acceptable. Thanks Alex