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Miller" , Hagen Paul Pfeifer , Jakub Kacinski , James Bottomley , Jesper Dangaard Brouer , John Fastabend , "Liam R. Howlett" , Michal Hocko , Stanislav Fomichev , Suren Baghdasaryan , Vlastimil Babka , linux-mm@kvack.org, yi1.lai@intel.com Subject: [linus:master] [mm/secretmem] 97d34aa65c: stress-ng.secretmem.ops_per_sec 99.5% regression Message-ID: <202609230824.7a9189aa-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit X-Rspam-User: X-Stat-Signature: na8h1pt8n8cfhwtuiq8kzxas69bet7oj X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 4CA6FA0006 X-HE-Tag: 1790125266-11623 X-HE-Meta: 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 vUAAx6Wv K39igmkGqVGQ3dkKLYbry+7oOCKLyI39N6yk5P8hrvq65GGQMIS7T9GNTrg4i77kf3Acof5vJVA7afvJWU0ooIr5HNB6IKADBTpVlQnERwT9/opA7PSMwpS7VoO2wXzcK+CWygsOpprexGygjS0l629fjmtV2qONfJ9Ere55yCUm9Tg159kNZZHLyYZHE2srwxRoEZHr7VT9o6xsBzpgmGOOLozC2uedo0vGUn/lYCpUBoAKbcz0TiNhm4C2lGV7z4G+UQZc5d1NcWkERqVrzZ0vpETwmFL1BqtYlGOvwPa4PCxt9lzDlpXctqe0Ps+eYfaAwMKv1eWkRTggSt1OlDGxh8BNci6aCvMj5aGVsQcYm2bAJ40LSrcw491pggf+lrSYQRz0VhSljZriFE4FHGEu6V8Q1mEG7TGoCCr9n9sGhY/tZssIn0QZPcO+lhVdCIVGGKCDN/Xi3Lbil+Q2/2SxDIW2fgDOxZAMB Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, kernel test robot noticed a 99.5% regression of stress-ng.secretmem.ops_per_sec on: commit: 97d34aa65c29cca85e3e9050f4c936389b38a054 ("mm/secretmem: properly account locked pages") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master testcase: stress-ng config: x86_64-rhel-9.4 compiler: gcc-14 test machine: 224 threads 2 sockets Intel(R) Xeon(R) Platinum 8480CTDX (Sapphire Rapids) with 256G memory parameters: nr_threads: 100% testtime: 60s test: secretmem cpufreq_governor: performance 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/202609230824.7a9189aa-lkp@intel.com Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260923/202609230824.7a9189aa-lkp@intel.com ========================================================================================= compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime: gcc-14/performance/x86_64-rhel-9.4/100%/debian-13-x86_64-20250902.cgz/lkp-spr-r02/secretmem/stress-ng/60s commit: 35b0fb391b ("mm/mremap: reset unfaulted VMA page offset for MREMAP_DONTUNMAP") 97d34aa65c ("mm/secretmem: properly account locked pages") 35b0fb391b0df573 97d34aa65c29cca85e3e9050f4c ---------------- --------------------------- %stddev %change %stddev \ | \ 6080503 -99.6% 23092 ± 3% stress-ng.secretmem.ops 85584 -99.5% 385.28 ± 3% stress-ng.secretmem.ops_per_sec 71.48 -16.0% 60.07 stress-ng.time.elapsed_time 71.48 -16.0% 60.07 stress-ng.time.elapsed_time.max 97435 ± 2% +1276.4% 1341103 stress-ng.time.involuntary_context_switches 230308 -96.1% 9096 stress-ng.time.maximum_resident_set_size 18401243 +3349.6% 6.348e+08 stress-ng.time.minor_page_faults 20417 -8.7% 18639 stress-ng.time.percent_of_cpu_this_job_got 14581 -25.0% 10937 stress-ng.time.system_time 13.34 +1858.5% 261.33 stress-ng.time.user_time 6898 ± 2% +96037.7% 6631576 ± 3% stress-ng.time.voluntary_context_switches Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki