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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,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 1A69BC3F2D1 for ; Wed, 4 Mar 2020 09:37:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EA5792073D for ; Wed, 4 Mar 2020 09:37:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729207AbgCDJhk (ORCPT ); Wed, 4 Mar 2020 04:37:40 -0500 Received: from out30-131.freemail.mail.aliyun.com ([115.124.30.131]:48469 "EHLO out30-131.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729112AbgCDJhk (ORCPT ); Wed, 4 Mar 2020 04:37:40 -0500 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R171e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01f04452;MF=alex.shi@linux.alibaba.com;NM=1;PH=DS;RN=16;SR=0;TI=SMTPD_---0TrdAbQ3_1583314652; Received: from IT-FVFX43SYHV2H.local(mailfrom:alex.shi@linux.alibaba.com fp:SMTPD_---0TrdAbQ3_1583314652) by smtp.aliyun-inc.com(127.0.0.1); Wed, 04 Mar 2020 17:37:32 +0800 Subject: Re: [PATCH v9 07/20] mm/lru: introduce TestClearPageLRU To: Rong Chen Cc: Andrew Morton , cgroups@vger.kernel.org, mgorman@techsingularity.net, tj@kernel.org, hughd@google.com, khlebnikov@yandex-team.ru, daniel.m.jordan@oracle.com, yang.shi@linux.alibaba.com, willy@infradead.org, hannes@cmpxchg.org, lkp@intel.com, Michal Hocko , Vladimir Davydov , linux-kernel@vger.kernel.org, linux-mm@kvack.org References: <1583146830-169516-1-git-send-email-alex.shi@linux.alibaba.com> <1583146830-169516-8-git-send-email-alex.shi@linux.alibaba.com> <20200302141144.b30abe0d89306fd387e13a92@linux-foundation.org> <9cacdc21-9c1f-2a17-05cb-e9cf2959cef5@linux.alibaba.com> <20200303164659.b3a30ab9d68c9ed82299a29c@linux-foundation.org> <6d155f79-8ba2-b322-4e92-311e7be98f79@linux.alibaba.com> <20200304090301.GB5972@shao2-debian> From: Alex Shi Message-ID: <60d253bb-33d0-4328-bfde-3b7c26435cde@linux.alibaba.com> Date: Wed, 4 Mar 2020 17:37:31 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 MIME-Version: 1.0 In-Reply-To: <20200304090301.GB5972@shao2-debian> 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 2020/3/4 下午5:03, Rong Chen 写道: >> Hi Andrew, >> >> Thanks a lot for comments! >> Yes, this patch is essential for all next. >> >> Consider the normal memory testing would focus on user page, that probabably with PageLRU. >> >> Fengguang's vm-scalibicase-small-allocs which used a lots vm_area_struct slab, which may >> got some impact. 0day/Cheng Rong is working on the test. In my roughly testing, it may drop 5% on my >> 96threads/394GB machine. >> >> Thanks >> Alex > Hi, > > We only tested one case and found a slight regression of vm-scalability.median from this patch set: > > Test case: small allocs > ========================================================================================= > compiler/cpufreq_governor/kconfig/rootfs/runtime/tbox_group/test/testcase/ucode: > gcc-7/performance/x86_64-rhel-7.6/debian-x86_64-20191114.cgz/300s/lkp-ivb-d02/small-allocs/vm-scalability/0x21 It's a very acceptable result! Thanks a lot for so quick testing! I believe your results would be far more stable than me. :) (My testing show quit different result in 2 reboot(1.3% or 6.6% drop). Maybe sth wrong for me in this case.) Thanks for your report! Alex From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alex Shi Subject: Re: [PATCH v9 07/20] mm/lru: introduce TestClearPageLRU Date: Wed, 4 Mar 2020 17:37:31 +0800 Message-ID: <60d253bb-33d0-4328-bfde-3b7c26435cde@linux.alibaba.com> References: <1583146830-169516-1-git-send-email-alex.shi@linux.alibaba.com> <1583146830-169516-8-git-send-email-alex.shi@linux.alibaba.com> <20200302141144.b30abe0d89306fd387e13a92@linux-foundation.org> <9cacdc21-9c1f-2a17-05cb-e9cf2959cef5@linux.alibaba.com> <20200303164659.b3a30ab9d68c9ed82299a29c@linux-foundation.org> <6d155f79-8ba2-b322-4e92-311e7be98f79@linux.alibaba.com> <20200304090301.GB5972@shao2-debian> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20200304090301.GB5972@shao2-debian> Sender: cgroups-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: Content-Type: text/plain; charset="utf-8" To: Rong Chen Cc: Andrew Morton , cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, mgorman-3eNAlZScCAx27rWaFMvyedHuzzzSOjJt@public.gmane.org, tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, hughd-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org, khlebnikov-XoJtRXgx1JseBXzfvpsJ4g@public.gmane.org, daniel.m.jordan-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org, yang.shi-KPsoFbNs7GizrGE5bRqYAgC/G2K4zDHf@public.gmane.org, willy-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org, hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org, lkp-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, Michal Hocko , Vladimir Davydov , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org 在 2020/3/4 下午5:03, Rong Chen 写道: >> Hi Andrew, >> >> Thanks a lot for comments! >> Yes, this patch is essential for all next. >> >> Consider the normal memory testing would focus on user page, that probabably with PageLRU. >> >> Fengguang's vm-scalibicase-small-allocs which used a lots vm_area_struct slab, which may >> got some impact. 0day/Cheng Rong is working on the test. In my roughly testing, it may drop 5% on my >> 96threads/394GB machine. >> >> Thanks >> Alex > Hi, > > We only tested one case and found a slight regression of vm-scalability.median from this patch set: > > Test case: small allocs > ========================================================================================= > compiler/cpufreq_governor/kconfig/rootfs/runtime/tbox_group/test/testcase/ucode: > gcc-7/performance/x86_64-rhel-7.6/debian-x86_64-20191114.cgz/300s/lkp-ivb-d02/small-allocs/vm-scalability/0x21 It's a very acceptable result! Thanks a lot for so quick testing! I believe your results would be far more stable than me. :) (My testing show quit different result in 2 reboot(1.3% or 6.6% drop). Maybe sth wrong for me in this case.) Thanks for your report! Alex