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Hello, kernel test robot noticed a 92.0% regression of fsmark.app_overhead on: commit: b4be3ccf1c251cbd3a3cf5391a80fe3a5f6f075e ("nfsd: implement OPEN_ARGS_SHARE_ACCESS_WANT_OPEN_XOR_DELEGATION") https://git.kernel.org/cgit/linux/kernel/git/snitzer/linux.git cel-nfsd-next-6.12-rc5 testcase: fsmark config: x86_64-rhel-8.3 compiler: gcc-12 test machine: 128 threads 2 sockets Intel(R) Xeon(R) Platinum 8358 CPU @ 2.60GHz (Ice Lake) with 128G memory parameters: iterations: 1x nr_threads: 1t disk: 1HDD fs: btrfs fs2: nfsv4 filesize: 4K test_size: 40M sync_method: fsyncBeforeClose nr_files_per_directory: 1fpd 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/202411071017.ddd9e9e2-oliver.sang@intel.com Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20241107/202411071017.ddd9e9e2-oliver.sang@intel.com ========================================================================================= compiler/cpufreq_governor/disk/filesize/fs2/fs/iterations/kconfig/nr_files_per_directory/nr_threads/rootfs/sync_method/tbox_group/test_size/testcase: gcc-12/performance/1HDD/4K/nfsv4/btrfs/1x/x86_64-rhel-8.3/1fpd/1t/debian-12-x86_64-20240206.cgz/fsyncBeforeClose/lkp-icl-2sp6/40M/fsmark commit: 37f27b20cd ("nfsd: add support for FATTR4_OPEN_ARGUMENTS") b4be3ccf1c ("nfsd: implement OPEN_ARGS_SHARE_ACCESS_WANT_OPEN_XOR_DELEGATION") 37f27b20cd64e2e0 b4be3ccf1c251cbd3a3cf5391a8 ---------------- --------------------------- %stddev %change %stddev \ | \ 97.33 ± 9% -16.3% 81.50 ± 9% perf-c2c.HITM.local 3788 ±101% +147.5% 9377 ± 6% sched_debug.cfs_rq:/.load_avg.max 2936 -6.2% 2755 vmstat.system.cs 2015880 ± 3% +92.0% 3870164 fsmark.app_overhead 18.57 +0.0% 18.57 fsmark.files_per_sec 53420 -17.3% 44185 fsmark.time.voluntary_context_switches 1.50 ± 7% +13.4% 1.70 ± 3% perf-sched.wait_time.avg.ms.devkmsg_read.vfs_read.ksys_read.do_syscall_64 3.00 ± 7% +13.4% 3.40 ± 3% perf-sched.wait_time.max.ms.devkmsg_read.vfs_read.ksys_read.do_syscall_64 1756957 -2.1% 1720536 proc-vmstat.numa_hit 1624496 -2.2% 1588039 proc-vmstat.numa_local 1.28 ± 4% -8.2% 1.17 ± 3% perf-stat.i.MPKI 2916 -6.2% 2735 perf-stat.i.context-switches 1529 ± 4% +8.2% 1655 ± 3% perf-stat.i.cycles-between-cache-misses 2910 -6.2% 2729 perf-stat.ps.context-switches 0.67 ± 15% -0.4 0.27 ±100% perf-profile.calltrace.cycles-pp._Fork 0.95 ± 15% +0.3 1.26 ± 11% perf-profile.calltrace.cycles-pp.__sched_setaffinity.sched_setaffinity.__x64_sys_sched_setaffinity.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.70 ± 47% +0.3 1.04 ± 9% perf-profile.calltrace.cycles-pp._nohz_idle_balance.do_idle.cpu_startup_entry.start_secondary.common_startup_64 0.52 ± 45% +0.3 0.86 ± 15% perf-profile.calltrace.cycles-pp.seq_read_iter.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.72 ± 50% +0.4 1.12 ± 18% perf-profile.calltrace.cycles-pp.link_path_walk.path_openat.do_filp_open.do_sys_openat2.__x64_sys_openat 1.22 ± 26% +0.4 1.67 ± 12% perf-profile.calltrace.cycles-pp.sched_setaffinity.evlist_cpu_iterator__next.read_counters.process_interval.dispatch_events 2.20 ± 11% +0.6 2.78 ± 13% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 2.20 ± 11% +0.6 2.82 ± 12% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.read 2.03 ± 13% +0.6 2.67 ± 13% perf-profile.calltrace.cycles-pp.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 0.68 ± 15% -0.2 0.47 ± 19% perf-profile.children.cycles-pp._Fork 0.56 ± 15% -0.1 0.42 ± 16% perf-profile.children.cycles-pp.tcp_v6_do_rcv 0.46 ± 13% -0.1 0.35 ± 16% perf-profile.children.cycles-pp.alloc_pages_mpol_noprof 0.10 ± 75% +0.2 0.29 ± 19% perf-profile.children.cycles-pp.refresh_cpu_vm_stats 0.28 ± 33% +0.2 0.47 ± 16% perf-profile.children.cycles-pp.show_stat 0.34 ± 32% +0.2 0.54 ± 16% perf-profile.children.cycles-pp.fold_vm_numa_events 0.37 ± 11% +0.3 0.63 ± 23% perf-profile.children.cycles-pp.setup_items_for_insert 0.88 ± 15% +0.3 1.16 ± 12% perf-profile.children.cycles-pp.__set_cpus_allowed_ptr 0.37 ± 14% +0.3 0.67 ± 61% perf-profile.children.cycles-pp.btrfs_writepages 0.37 ± 14% +0.3 0.67 ± 61% perf-profile.children.cycles-pp.extent_write_cache_pages 0.64 ± 19% +0.3 0.94 ± 15% perf-profile.children.cycles-pp.btrfs_insert_empty_items 0.38 ± 12% +0.3 0.68 ± 58% perf-profile.children.cycles-pp.btrfs_fdatawrite_range 0.32 ± 23% +0.3 0.63 ± 64% perf-profile.children.cycles-pp.extent_writepage 0.97 ± 14% +0.3 1.31 ± 10% perf-profile.children.cycles-pp.__sched_setaffinity 1.07 ± 16% +0.4 1.44 ± 10% perf-profile.children.cycles-pp.__x64_sys_sched_setaffinity 1.39 ± 18% +0.5 1.90 ± 12% perf-profile.children.cycles-pp.seq_read_iter 0.34 ± 30% +0.2 0.52 ± 16% perf-profile.self.cycles-pp.fold_vm_numa_events 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