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X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: uOLVi8uE4Tg3F5cNcUb1h585lPlGtMT8pFl8iz8gOoe8ySI/ZrGUTChAbtCjYjxYhWggmXmak25m2P4F0VBvmA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM3PPF4C5964328 X-OriginatorOrg: intel.com Hello, kernel test robot noticed a 5.0% improvement of stress-ng.bind-mount.ops_per_sec on: commit: c0aac5975bafc86f6817b14e9f71dcb5064a9183 ("ns: pad refcount") 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: 64 threads 2 sockets Intel(R) Xeon(R) Gold 6346 CPU @ 3.10GHz (Ice Lake) with 256G memory parameters: nr_threads: 100% disk: 1HDD testtime: 60s fs: xfs test: bind-mount cpufreq_governor: performance Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260227/202602271512.37537e7e-lkp@intel.com ========================================================================================= compiler/cpufreq_governor/disk/fs/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime: gcc-14/performance/1HDD/xfs/x86_64-rhel-9.4/100%/debian-13-x86_64-20250902.cgz/lkp-icl-2sp8/bind-mount/stress-ng/60s commit: 887e97745e ("fs: track the inode having file locks with a flag in ->i_opflags") c0aac5975b ("ns: pad refcount") 887e97745ec336c2 c0aac5975bafc86f6817b14e9f7 ---------------- --------------------------- %stddev %change %stddev \ | \ 2345 -3.9% 2254 stress-ng.bind-mount.microsecs_per_mount 3070 -5.5% 2902 stress-ng.bind-mount.microsecs_per_umount 704181 +4.9% 739032 stress-ng.bind-mount.ops 11736 +5.0% 12318 stress-ng.bind-mount.ops_per_sec 10287 +6.3% 10937 ± 3% stress-ng.time.involuntary_context_switches 1810201 +4.6% 1893350 stress-ng.time.voluntary_context_switches 1.54 +0.1 1.62 mpstat.cpu.all.soft% 157837 +5.0% 165680 vmstat.system.cs 179327 +3.9% 186257 vmstat.system.in 2.772e+09 +3.3% 2.863e+09 ± 2% perf-stat.i.branch-instructions 64587234 +2.2% 65980821 perf-stat.i.cache-references 163281 +5.0% 171502 perf-stat.i.context-switches 1.305e+10 +3.4% 1.35e+10 ± 2% perf-stat.i.instructions 0.45 +2.6% 0.46 perf-stat.i.ipc 2.48 +5.1% 2.61 perf-stat.i.metric.K/sec 2.728e+09 +3.3% 2.818e+09 ± 2% perf-stat.ps.branch-instructions 63500861 +2.2% 64868461 perf-stat.ps.cache-references 160406 +5.0% 168462 perf-stat.ps.context-switches 1.285e+10 +3.4% 1.329e+10 ± 2% perf-stat.ps.instructions 7.871e+11 +3.5% 8.143e+11 ± 2% perf-stat.total.instructions 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