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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,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 BB6DAC433DF for ; Tue, 13 Oct 2020 06:05:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7C8AD20E65 for ; Tue, 13 Oct 2020 06:05:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388963AbgJMGFn (ORCPT ); Tue, 13 Oct 2020 02:05:43 -0400 Received: from mga18.intel.com ([134.134.136.126]:30470 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388373AbgJMGFn (ORCPT ); Tue, 13 Oct 2020 02:05:43 -0400 IronPort-SDR: mlQRJfM0j84XMyzmAk9yU1JHdu2HR/lpeQpgLK+oYTe1wtQ8/Zy2kqXka5rJdA/7QSUBsYgWwX y5TLmhlx1NPQ== X-IronPort-AV: E=McAfee;i="6000,8403,9772"; a="153687673" X-IronPort-AV: E=Sophos;i="5.77,369,1596524400"; d="scan'208";a="153687673" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Oct 2020 23:05:38 -0700 IronPort-SDR: 4AOsyiw5Sxq+PLgq935AhQVu5qWg6pGjGbIB0TqEa+zV8FK7lDhrc3WAgbaLhmhdw4ESVUQtyC gZgzZW/a+Wtg== X-IronPort-AV: E=Sophos;i="5.77,369,1596524400"; d="scan'208";a="530264652" Received: from xingzhen-mobl.ccr.corp.intel.com (HELO [10.238.4.68]) ([10.238.4.68]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Oct 2020 23:05:33 -0700 Subject: Re: [LKP] Re: [hugetlbfs] c0d0381ade: vm-scalability.throughput -33.4% regression To: Mike Kravetz , kernel test robot Cc: Linus Torvalds , Andrew Morton , Michal Hocko , Hugh Dickins , Naoya Horiguchi , "Aneesh Kumar K.V" , Andrea Arcangeli , "Kirill A.Shutemov" , Davidlohr Bueso , Prakash Sangappa , LKML , lkp@lists.01.org References: <20200622005551.GK5535@shao2-debian> <718e1653-b273-096b-0ee3-f720cf794612@oracle.com> <691152ef-6787-9598-4445-fd2a0164f70f@oracle.com> <1f6d321e-96b4-18c3-2991-d6a2e94c9e60@oracle.com> <68992a81-a1b9-467b-59c4-48ab65c601c5@linux.intel.com> <7540556c-1e07-51b2-d903-829a887ef5b6@oracle.com> <4c95b307-90b5-798f-34c1-000ea5331ebb@linux.intel.com> From: Xing Zhengjun Message-ID: <6922f83b-32af-0535-c251-5bf2711a0e30@linux.intel.com> Date: Tue, 13 Oct 2020 14:05:31 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.12.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/13/2020 11:01 AM, Mike Kravetz wrote: > On 10/12/20 6:59 PM, Xing Zhengjun wrote: >> >> >> On 10/13/2020 1:40 AM, Mike Kravetz wrote: >>> On 10/11/20 10:29 PM, Xing Zhengjun wrote: >>>> Hi Mike, >>>> >>>> I re-test it in v5.9-rc8, the regression still existed. It is almost the same as 34ae204f1851. Do you have time to look at it? Thanks. >>>> >>> >>> Thank you for testing. >>> >>> Just curious, did you apply the series in this thread or just test v5.9-rc8? >>> If just testing v5.9-rc8, no changes to this code were added after 34ae204f1851, >>> so results being the same are expected. >>> >> >> I just test v5.9-rc8. Where can I find the series patches you mentioned here? Or just wait for the next mainline release? >> > > My apologies. I missed that you were not cc'ed on this thred: > https://lore.kernel.org/linux-mm/20200706202615.32111-1-mike.kravetz@oracle.com/ > > As mentioned, there will likely be another revision to the way locking is > handled. The new scheme will try to consider performance as is done in > the above link. I suggest you wait for next revision. If you do not mind, > I will cc you when the new code is posted. > OK. I will wait for the next revision. -- Zhengjun Xing