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Sep 2023 01:25:56 +0000 Date: Tue, 12 Sep 2023 09:25:45 +0800 From: Oliver Sang To: Chuck Lever III CC: "oe-lkp@lists.linux.dev" , kernel test robot , Linux Kernel Mailing List , Christian Brauner , linux-mm , "ying.huang@intel.com" , "feng.tang@intel.com" , "fengwei.yin@intel.com" , Subject: Re: [linus:master] [shmem] a2e459555c: aim9.disk_src.ops_per_sec -19.0% regression Message-ID: References: <202309081306.3ecb3734-oliver.sang@intel.com> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: X-ClientProxiedBy: SG2PR01CA0170.apcprd01.prod.exchangelabs.com (2603:1096:4:28::26) To PH8PR11MB6779.namprd11.prod.outlook.com (2603:10b6:510:1ca::17) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH8PR11MB6779:EE_|BL3PR11MB6531:EE_ X-MS-Office365-Filtering-Correlation-Id: 1f3e9c78-e6ec-4d33-8ae0-08dbb32f3675 X-LD-Processed: 46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 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 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: hi, Chuck Lever, On Fri, Sep 08, 2023 at 02:43:22PM +0000, Chuck Lever III wrote: > > > > On Sep 8, 2023, at 1:26 AM, kernel test robot wrote: > > > > > > > > Hello, > > > > kernel test robot noticed a -19.0% regression of aim9.disk_src.ops_per_sec on: > > > > > > commit: a2e459555c5f9da3e619b7e47a63f98574dc75f1 ("shmem: stable directory offsets") > > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master > > > > testcase: aim9 > > test machine: 48 threads 2 sockets Intel(R) Xeon(R) CPU E5-2697 v2 @ 2.70GHz (Ivy Bridge-EP) with 112G memory > > parameters: > > > > testtime: 300s > > test: disk_src > > cpufreq_governor: performance > > > > > > In addition to that, the commit also has significant impact on the following tests: > > > > +------------------+-------------------------------------------------------------------------------------------------+ > > | testcase: change | aim9: aim9.disk_src.ops_per_sec -14.6% regression | > > | test machine | 48 threads 2 sockets Intel(R) Xeon(R) CPU E5-2697 v2 @ 2.70GHz (Ivy Bridge-EP) with 112G memory | > > | test parameters | cpufreq_governor=performance | > > | | test=all | > > | | testtime=5s | > > +------------------+-------------------------------------------------------------------------------------------------+ > > > > > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > > the same patch/commit), kindly add following tags > > | Reported-by: kernel test robot > > | Closes: https://lore.kernel.org/oe-lkp/202309081306.3ecb3734-oliver.sang@intel.com > > Hi, several weeks ago we requested that these tests be run > again by the robot because they can't be run in environments > I have available to me (the tests do not run on Fedora, and > I don't have any big iron). > > We wanted the tests rerun before the patch was committed. > There was a deafening silence. So I assumed the work I did > then to address the regression was successful, and the > patches are now in upstream Linux. > > This new report is disappointing. I'm so sorry that I missed the test request for https://lore.kernel.org/all/169030957098.157536.9938425508695693348.stgit@manet.1015granger.net/ just FYI, when this auto-bisect done, head commit of linus/master: [65d6e954e37872fd9afb5ef3fc0481bb3c2f20f4] was tested, it already includes 2be4f05af71bb libfs: Remove parent dentry locking in offset_iterate_dir() in our tests, the regression still exists. > > But, I'm still in a position where I can't run this test, > and the results don't really indicate where the problem > is. So I can't possibly address this issue. > > Any suggestions, advice, or help would be appreciated. if you have further fix patch, could you let us know? I will test it. > > -- > Chuck Lever > >