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PfFe/q/ouH3+rG7SFHON+WZ0uus4NlKBTBtbLx8amEws2ti69fXmQkdRKTRF65TzDelKsJX0pFTSG/GT6Cf+mw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR11MB6605 X-OriginatorOrg: intel.com Hello, back in last Oct, we reported "[linux-next:master] [cpuidle] 38f83090f5: fsmark.app_overhead 51.9% regression" (https://lore.kernel.org/all/202410072214.11d18a3c-oliver.sang@intel.com/) but there is no obvious fsmark.files_per_sec difference at that time. now on a different platform and with different fsmark parameters, we notice a small regression of fsmark.files_per_sec. but no obvious fsmark.app_overhead difference this time (so does not show in below detail table). last Oct report seems cause some confusion. so for this one, we try to rebuild kernels and run more times to confirm the configs are same for parent/38f83090f5 and data is stable. just FYI what we observed in our tests. kernel test robot noticed a 5.1% regression of fsmark.files_per_sec on: commit: 38f83090f515b4b5d59382dfada1e7457f19aa47 ("cpuidle: menu: Remove iowait influence") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master [test failed on linus/master 6fea5fabd3323cd27b2ab5143263f37ff29550cb] [test failed on linux-next/master bc8aa6cdadcc00862f2b5720e5de2e17f696a081] testcase: fsmark config: x86_64-rhel-9.4 compiler: gcc-12 test machine: 224 threads 2 sockets Intel(R) Xeon(R) Platinum 8480CTDX (Sapphire Rapids) with 512G memory parameters: iterations: 8 disk: 1SSD nr_threads: 4 fs: btrfs filesize: 9B test_size: 16G sync_method: fsyncBeforeClose nr_directories: 16d nr_files_per_directory: 256fpd 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/202504241314.fe89a536-lkp@intel.com Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250424/202504241314.fe89a536-lkp@intel.com ========================================================================================= compiler/cpufreq_governor/disk/filesize/fs/iterations/kconfig/nr_directories/nr_files_per_directory/nr_threads/rootfs/sync_method/tbox_group/test_size/testcase: gcc-12/performance/1SSD/9B/btrfs/8/x86_64-rhel-9.4/16d/256fpd/4/debian-12-x86_64-20240206.cgz/fsyncBeforeClose/lkp-spr-2sp4/16G/fsmark commit: v6.12-rc1 38f83090f5 ("cpuidle: menu: Remove iowait influence") v6.12-rc1 38f83090f515b4b5d59382dfada ---------------- --------------------------- %stddev %change %stddev \ | \ 0.12 ± 4% +0.0 0.14 ± 2% mpstat.cpu.all.iowait% 940771 +2.8% 967141 proc-vmstat.pgfault 120077 -5.7% 113267 vmstat.system.cs 72197 ± 2% -14.2% 61965 ± 2% vmstat.system.in 20496 -5.1% 19456 fsmark.files_per_sec 219.58 +5.0% 230.50 fsmark.time.elapsed_time 219.58 +5.0% 230.50 fsmark.time.elapsed_time.max 0.02 ± 9% +22.5% 0.03 ± 10% perf-sched.wait_and_delay.avg.ms.wait_log_commit.btrfs_sync_log.btrfs_sync_file.do_fsync 15676 ± 9% -25.2% 11732 ± 14% perf-sched.wait_and_delay.count.btrfs_sync_log.btrfs_sync_file.do_fsync.__x64_sys_fsync 130219 ± 7% -14.8% 110942 ± 8% perf-sched.wait_and_delay.count.schedule_preempt_disabled.rwsem_down_read_slowpath.down_read.btrfs_tree_read_lock_nested 0.02 ± 10% +27.8% 0.02 ± 12% perf-sched.wait_time.avg.ms.wait_log_commit.btrfs_sync_log.btrfs_sync_file.do_fsync 1.457e+09 -4.4% 1.393e+09 perf-stat.i.branch-instructions 14767792 -4.6% 14093766 perf-stat.i.branch-misses 71872875 -3.4% 69406875 perf-stat.i.cache-references 121769 -5.8% 114744 perf-stat.i.context-switches 8.574e+09 -7.2% 7.96e+09 perf-stat.i.cpu-cycles 7.979e+09 -3.6% 7.691e+09 perf-stat.i.instructions 3773 -2.0% 3697 perf-stat.i.minor-faults 3773 -2.0% 3697 perf-stat.i.page-faults 1.45e+09 -4.4% 1.386e+09 perf-stat.ps.branch-instructions 14670086 -4.5% 14003599 perf-stat.ps.branch-misses 71521482 -3.4% 69080547 perf-stat.ps.cache-references 121170 -5.7% 114204 perf-stat.ps.context-switches 8.537e+09 -7.2% 7.925e+09 perf-stat.ps.cpu-cycles 7.938e+09 -3.6% 7.654e+09 perf-stat.ps.instructions 3717 -1.9% 3645 perf-stat.ps.minor-faults 3717 -1.9% 3645 perf-stat.ps.page-faults 9.65 ± 14% -9.4 0.22 ±123% perf-profile.calltrace.cycles-pp.poll_idle.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle 18.61 ± 6% -4.7 13.95 ± 6% perf-profile.calltrace.cycles-pp.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry 18.05 ± 7% -4.5 13.51 ± 7% perf-profile.calltrace.cycles-pp.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary 18.73 ± 7% -4.5 14.22 ± 7% perf-profile.calltrace.cycles-pp.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary.common_startup_64 22.60 ± 4% -4.5 18.11 ± 3% perf-profile.calltrace.cycles-pp.common_startup_64 21.55 ± 5% -4.5 17.08 ± 4% perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.common_startup_64 21.57 ± 5% -4.5 17.11 ± 4% perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.common_startup_64 21.58 ± 5% -4.5 17.12 ± 4% perf-profile.calltrace.cycles-pp.start_secondary.common_startup_64 2.39 ± 6% -0.6 1.78 ± 7% perf-profile.calltrace.cycles-pp.btrfs_clone_write_end_io.blk_mq_end_request_batch.nvme_irq.__handle_irq_event_percpu.handle_irq_event 2.32 ± 7% -0.6 1.72 ± 7% perf-profile.calltrace.cycles-pp.btrfs_orig_write_end_io.btrfs_clone_write_end_io.blk_mq_end_request_batch.nvme_irq.__handle_irq_event_percpu 2.21 ± 7% -0.6 1.64 ± 7% perf-profile.calltrace.cycles-pp.end_bbio_meta_write.btrfs_orig_write_end_io.btrfs_clone_write_end_io.blk_mq_end_request_batch.nvme_irq 0.52 ± 27% +0.1 0.63 ± 6% perf-profile.calltrace.cycles-pp.__blk_flush_plug.blk_finish_plug.btrfs_sync_log.btrfs_sync_file.do_fsync 0.52 ± 27% +0.1 0.63 ± 6% perf-profile.calltrace.cycles-pp.blk_finish_plug.btrfs_sync_log.btrfs_sync_file.do_fsync.__x64_sys_fsync 0.95 ± 6% +0.2 1.10 ± 7% perf-profile.calltrace.cycles-pp.__btrfs_wait_marked_extents.btrfs_wait_tree_log_extents.btrfs_sync_log.btrfs_sync_file.do_fsync 1.04 ± 6% +0.2 1.21 ± 7% perf-profile.calltrace.cycles-pp.btrfs_wait_tree_log_extents.btrfs_sync_log.btrfs_sync_file.do_fsync.__x64_sys_fsync 0.51 ± 27% +0.2 0.68 ± 5% perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle 0.36 ± 70% +0.3 0.62 ± 6% perf-profile.calltrace.cycles-pp.btrfs_free_tree_block.btrfs_force_cow_block.btrfs_cow_block.btrfs_search_slot.btrfs_insert_empty_items 0.36 ± 70% +0.3 0.65 ± 5% perf-profile.calltrace.cycles-pp.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call 2.20 ± 8% +0.6 2.77 ± 11% perf-profile.calltrace.cycles-pp.copy_extent_buffer_full.btrfs_force_cow_block.btrfs_cow_block.btrfs_search_slot.btrfs_insert_empty_items 0.00 +0.8 0.76 ± 10% perf-profile.calltrace.cycles-pp.folio_end_writeback.end_bbio_meta_write.btrfs_orig_write_end_io.blk_mq_end_request_batch.nvme_irq 0.00 +0.8 0.85 ± 9% perf-profile.calltrace.cycles-pp.end_bbio_meta_write.btrfs_orig_write_end_io.blk_mq_end_request_batch.nvme_irq.__handle_irq_event_percpu 0.00 +0.9 0.89 ± 9% perf-profile.calltrace.cycles-pp.btrfs_orig_write_end_io.blk_mq_end_request_batch.nvme_irq.__handle_irq_event_percpu.handle_irq_event 7.54 ± 5% +1.1 8.69 ± 4% perf-profile.calltrace.cycles-pp.btrfs_force_cow_block.btrfs_cow_block.btrfs_search_slot.btrfs_insert_empty_items.copy_items 7.56 ± 5% +1.1 8.71 ± 4% perf-profile.calltrace.cycles-pp.btrfs_cow_block.btrfs_search_slot.btrfs_insert_empty_items.copy_items.copy_inode_items_to_log 3.57 ± 5% +1.3 4.87 ± 7% perf-profile.calltrace.cycles-pp.intel_idle.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle 1.99 ± 13% +2.8 4.76 ± 10% perf-profile.calltrace.cycles-pp.handle_edge_irq.__sysvec_posted_msi_notification.sysvec_posted_msi_notification.asm_sysvec_posted_msi_notification.cpuidle_enter_state 2.25 ± 14% +2.9 5.16 ± 11% perf-profile.calltrace.cycles-pp.__sysvec_posted_msi_notification.sysvec_posted_msi_notification.asm_sysvec_posted_msi_notification.cpuidle_enter_state.cpuidle_enter 2.35 ± 14% +3.0 5.32 ± 11% perf-profile.calltrace.cycles-pp.sysvec_posted_msi_notification.asm_sysvec_posted_msi_notification.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call 2.51 ± 15% +3.1 5.60 ± 11% perf-profile.calltrace.cycles-pp.asm_sysvec_posted_msi_notification.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle 50.39 ± 2% +4.4 54.84 ± 2% perf-profile.calltrace.cycles-pp.__x64_sys_fsync.do_syscall_64.entry_SYSCALL_64_after_hwframe.fsync 50.38 ± 2% +4.4 54.82 ± 2% perf-profile.calltrace.cycles-pp.do_fsync.__x64_sys_fsync.do_syscall_64.entry_SYSCALL_64_after_hwframe.fsync 50.35 ± 2% +4.4 54.80 ± 2% perf-profile.calltrace.cycles-pp.btrfs_sync_file.do_fsync.__x64_sys_fsync.do_syscall_64.entry_SYSCALL_64_after_hwframe 50.84 ± 2% +4.5 55.30 perf-profile.calltrace.cycles-pp.fsync 50.57 ± 2% +4.5 55.03 ± 2% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.fsync 50.57 ± 2% +4.5 55.03 ± 2% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.fsync 9.92 ± 13% -9.4 0.52 ± 12% perf-profile.children.cycles-pp.poll_idle 18.84 ± 7% -4.6 14.26 ± 6% perf-profile.children.cycles-pp.cpuidle_enter_state 18.85 ± 7% -4.6 14.27 ± 6% perf-profile.children.cycles-pp.cpuidle_enter 19.59 ± 6% -4.5 15.04 ± 6% perf-profile.children.cycles-pp.cpuidle_idle_call 22.60 ± 4% -4.5 18.11 ± 3% perf-profile.children.cycles-pp.common_startup_64 22.60 ± 4% -4.5 18.11 ± 3% perf-profile.children.cycles-pp.cpu_startup_entry 22.58 ± 4% -4.5 18.09 ± 3% perf-profile.children.cycles-pp.do_idle 21.58 ± 5% -4.5 17.12 ± 4% perf-profile.children.cycles-pp.start_secondary 2.46 ± 6% -0.6 1.86 ± 7% perf-profile.children.cycles-pp.btrfs_clone_write_end_io 0.12 ± 13% -0.1 0.06 ± 15% perf-profile.children.cycles-pp.local_clock_noinstr 0.22 ± 8% +0.1 0.28 ± 6% perf-profile.children.cycles-pp.__xa_set_mark 0.57 ± 5% +0.1 0.64 ± 5% perf-profile.children.cycles-pp.blk_finish_plug 0.59 ± 5% +0.1 0.67 ± 5% perf-profile.children.cycles-pp.__blk_flush_plug 0.77 ± 5% +0.1 0.87 ± 4% perf-profile.children.cycles-pp.__folio_start_writeback 0.60 ± 6% +0.1 0.70 ± 6% perf-profile.children.cycles-pp.pin_down_extent 0.75 ± 6% +0.1 0.88 ± 7% perf-profile.children.cycles-pp.btrfs_free_tree_block 0.96 ± 5% +0.1 1.11 ± 7% perf-profile.children.cycles-pp.__btrfs_wait_marked_extents 1.11 ± 6% +0.2 1.29 ± 6% perf-profile.children.cycles-pp.set_extent_bit 1.21 ± 5% +0.2 1.38 ± 6% perf-profile.children.cycles-pp.__set_extent_bit 0.83 ± 5% +0.2 1.01 ± 6% perf-profile.children.cycles-pp.__folio_mark_dirty 1.25 ± 6% +0.2 1.47 ± 6% perf-profile.children.cycles-pp.__folio_end_writeback 2.28 ± 4% +0.3 2.56 ± 4% perf-profile.children.cycles-pp.__write_extent_buffer 3.81 ± 5% +0.5 4.34 ± 6% perf-profile.children.cycles-pp.btrfs_alloc_tree_block 3.73 ± 6% +0.7 4.42 ± 8% perf-profile.children.cycles-pp.copy_extent_buffer_full 5.21 ± 4% +0.8 5.97 ± 6% perf-profile.children.cycles-pp.__memcpy 3.62 ± 4% +1.3 4.92 ± 7% perf-profile.children.cycles-pp.intel_idle 10.48 ± 4% +1.5 11.94 ± 4% perf-profile.children.cycles-pp.btrfs_force_cow_block 10.51 ± 4% +1.5 11.97 ± 4% perf-profile.children.cycles-pp.btrfs_cow_block 50.40 ± 2% +4.4 54.84 ± 2% perf-profile.children.cycles-pp.__x64_sys_fsync 50.38 ± 2% +4.4 54.83 ± 2% perf-profile.children.cycles-pp.do_fsync 50.36 ± 2% +4.4 54.81 ± 2% perf-profile.children.cycles-pp.btrfs_sync_file 50.86 ± 2% +4.5 55.32 perf-profile.children.cycles-pp.fsync 69.02 ± 2% +4.6 73.66 perf-profile.children.cycles-pp.do_syscall_64 69.05 ± 2% +4.6 73.69 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 6.48 ± 13% -6.0 0.48 ± 12% perf-profile.self.cycles-pp.poll_idle 0.32 ± 8% +0.1 0.39 ± 11% perf-profile.self.cycles-pp.folio_mark_accessed 5.10 ± 4% +0.7 5.84 ± 6% perf-profile.self.cycles-pp.__memcpy 3.62 ± 4% +1.3 4.92 ± 7% perf-profile.self.cycles-pp.intel_idle 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