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Miller" , linux-kernel@vger.kernel.org, syzbot+ef8d17bae14efb960935@syzkaller.appspotmail.com, quanyeyang , yi1.lai@intel.com Subject: Re: [PATCH] rhashtable: use per-init-site lockdep classes for bucket locks Message-ID: <202608280842.861e5949-lkp@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20260801-fix-rhashtable-bucket-lockdep-v1-1-15a0f8ae094c@gmail.com> Hello, kernel test robot noticed a 12.5% regression of stress-ng.shm-sysv.ops_per_sec on: commit: 62d8460a4e7a3ee028e5134d86169001490e7a60 ("[PATCH] rhashtable: use per-init-site lockdep classes for bucket locks") url: https://github.com/intel-lab-lkp/linux/commits/quanyeyang-via-B4-Relay/rhashtable-use-per-init-site-lockdep-classes-for-bucket-locks/20260815-014140 patch link: https://lore.kernel.org/all/20260801-fix-rhashtable-bucket-lockdep-v1-1-15a0f8ae094c@gmail.com/ patch subject: [PATCH] rhashtable: use per-init-site lockdep classes for bucket locks 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: shm-sysv 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/202608280842.861e5949-lkp@intel.com Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260828/202608280842.861e5949-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/shm-sysv/stress-ng/60s commit: 0131b508c0 ("Merge tag 'ntfs-for-7.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/ntfs") 62d8460a4e ("[PATCH] rhashtable: use per-init-site lockdep classes for bucket locks") 0131b508c0e2489e 62d8460a4e7a3ee028e5134d861 ---------------- --------------------------- 192413 +44.1% 277255 stress-ng.shm-sysv.nanosecs_per_shmat_call 349549 +24.2% 433996 stress-ng.shm-sysv.nanosecs_per_shmdt_call 174600 +51.9% 265191 stress-ng.shm-sysv.nanosecs_per_shmget_call 793610 -12.5% 694260 stress-ng.shm-sysv.ops 13236 -12.5% 11578 stress-ng.shm-sysv.ops_per_sec 65737 -10.0% 59167 ± 4% stress-ng.time.involuntary_context_switches 53645785 -12.0% 47213499 ± 2% stress-ng.time.minor_page_faults 4660 +24.6% 5806 stress-ng.time.percent_of_cpu_this_job_got 2585 +27.8% 3305 stress-ng.time.system_time 214.61 -14.7% 183.11 stress-ng.time.user_time 10735595 -7.0% 9986470 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