hi, Al Viro, we noticed this commit is merged in v6.8-rc1 now. there are lots of discussions/tests upon our first report for this commit: https://lore.kernel.org/all/202311300906.1f989fa8-oliver.sang@xxxxxxxxx/ but I'm kind of lost if there is a clear conclusion that these microbench marks results could be ignored. here we just made out report again FYI what we observed in our tests. if there is fix in any branch or you have some patches want us to test, please just let us know. Thanks a lot! Hello, kernel test robot noticed a -39.0% regression of stress-ng.dynlib.ops_per_sec on: commit: 1c18edd1b7a068e07fed7f00e059f22ed67c04c9 ("__dentry_kill(): new locking scheme") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master testcase: stress-ng test machine: 64 threads 2 sockets Intel(R) Xeon(R) Gold 6346 CPU @ 3.10GHz (Ice Lake) with 256G memory parameters: nr_threads: 100% testtime: 60s test: dynlib cpufreq_governor: performance In addition to that, the commit also has significant impact on the following tests: +------------------+-------------------------------------------------------------------------------------------+ | testcase: change | stress-ng: stress-ng.sysinfo.ops_per_sec -30.5% regression | | test machine | 64 threads 2 sockets Intel(R) Xeon(R) Gold 6346 CPU @ 3.10GHz (Ice Lake) with 256G memory | | test parameters | class=os | | | cpufreq_governor=performance | | | disk=1HDD | | | fs=ext4 | | | nr_threads=10% | | | test=sysinfo | | | testtime=60s | +------------------+-------------------------------------------------------------------------------------------+ 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 <oliver.sang@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-lkp/202402041509.ae663efc-oliver.sang@xxxxxxxxx Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20240204/202402041509.ae663efc-oliver.sang@xxxxxxxxx ========================================================================================= compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime: gcc-12/performance/x86_64-rhel-8.3/100%/debian-11.1-x86_64-20220510.cgz/lkp-icl-2sp8/dynlib/stress-ng/60s commit: b4cc0734d2 ("d_prune_aliases(): use a shrink list") 1c18edd1b7 ("__dentry_kill(): new locking scheme") b4cc0734d25746d4 1c18edd1b7a068e07fed7f00e05 ---------------- --------------------------- %stddev %change %stddev \ | \ 1.01 -0.3 0.68 ± 3% mpstat.cpu.all.soft% 3.56 -1.2 2.38 ± 2% mpstat.cpu.all.usr% 0.08 ± 16% -30.0% 0.06 ± 6% turbostat.IPC 366.64 -3.1% 355.32 turbostat.PkgWatt 74.36 -4.1% 71.34 turbostat.RAMWatt 17114647 -38.2% 10569750 ± 2% numa-numastat.node0.local_node 17143191 -38.2% 10600776 ± 2% numa-numastat.node0.numa_hit 17398272 -38.5% 10707229 ± 2% numa-numastat.node1.local_node 17435524 -38.4% 10742331 ± 2% numa-numastat.node1.numa_hit 422081 ± 2% -20.6% 335248 meminfo.Active 421953 ± 2% -20.6% 335120 meminfo.Active(anon) 256968 ± 2% -15.8% 216280 ± 2% meminfo.Mapped 309251 ± 2% -17.6% 254892 meminfo.SUnreclaim 673282 -20.4% 535639 meminfo.Shmem 429497 -11.9% 378461 meminfo.Slab 166940 ± 3% -18.3% 136439 ± 2% numa-meminfo.node0.SUnreclaim 203652 ± 7% -16.5% 170003 ± 4% numa-meminfo.node0.Slab 341933 ± 7% -13.8% 294623 ± 4% numa-meminfo.node1.Active 341891 ± 7% -13.8% 294580 ± 4% numa-meminfo.node1.Active(anon) 145566 ± 5% -16.6% 121353 ± 2% numa-meminfo.node1.SUnreclaim 547329 ± 6% -16.2% 458895 ± 7% numa-meminfo.node1.Shmem 715728 -39.0% 436874 ± 2% stress-ng.dynlib.ops 11928 -39.0% 7280 ± 2% stress-ng.dynlib.ops_per_sec 44724 ± 3% -6.0% 42032 ± 2% stress-ng.time.major_page_faults 50331777 -37.1% 31683535 ± 6% stress-ng.time.minor_page_faults 3610 +1.7% 3672 stress-ng.time.system_time 114.39 -36.7% 72.40 ± 2% stress-ng.time.user_time 41912 ± 3% -18.8% 34045 ± 2% numa-vmstat.node0.nr_slab_unreclaimable 17143309 -38.2% 10596416 ± 2% numa-vmstat.node0.numa_hit 17114765 -38.3% 10565389 ± 2% numa-vmstat.node0.numa_local 85518 ± 7% -13.9% 73627 ± 4% numa-vmstat.node1.nr_active_anon 136994 ± 6% -16.3% 114713 ± 7% numa-vmstat.node1.nr_shmem 36486 ± 4% -17.1% 30264 ± 2% numa-vmstat.node1.nr_slab_unreclaimable 85518 ± 7% -13.9% 73627 ± 4% numa-vmstat.node1.nr_zone_active_anon 17435482 -38.4% 10738005 ± 2% numa-vmstat.node1.numa_hit 17398230 -38.5% 10702903 ± 2% numa-vmstat.node1.numa_local 105527 ± 2% -20.3% 84064 proc-vmstat.nr_active_anon 128508 -2.1% 125808 proc-vmstat.nr_anon_pages 881453 -3.9% 847006 proc-vmstat.nr_file_pages 191392 -8.1% 175855 proc-vmstat.nr_inactive_anon 64498 ± 2% -16.1% 54133 ± 3% proc-vmstat.nr_mapped 168455 -20.5% 134006 proc-vmstat.nr_shmem 30065 +2.7% 30885 proc-vmstat.nr_slab_reclaimable 77487 ± 2% -17.3% 64109 proc-vmstat.nr_slab_unreclaimable 105527 ± 2% -20.3% 84064 proc-vmstat.nr_zone_active_anon 191392 -8.1% 175855 proc-vmstat.nr_zone_inactive_anon 34142 ± 10% -38.3% 21058 ± 18% proc-vmstat.numa_hint_faults 24667 ± 15% -38.8% 15086 ± 13% proc-vmstat.numa_hint_faults_local 34555455 -38.2% 21338406 ± 2% proc-vmstat.numa_hit 34489660 -38.3% 21272276 ± 2% proc-vmstat.numa_local 305551 ± 3% -5.6% 288299 ± 3% proc-vmstat.numa_pte_updates 268351 ± 3% -18.2% 219564 ± 3% proc-vmstat.pgactivate 39256832 -38.4% 24177908 ± 2% proc-vmstat.pgalloc_normal 50781973 -36.7% 32131262 ± 6% proc-vmstat.pgfault 38876503 -38.5% 23895388 ± 2% proc-vmstat.pgfree 0.01 ±162% -100.0% 0.00 perf-sched.sch_delay.avg.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.unlink_file_vma 5.00 ± 22% -29.3% 3.54 ± 23% perf-sched.sch_delay.max.ms.pipe_read.vfs_read.ksys_read.do_syscall_64 0.20 ±179% -100.0% 0.00 perf-sched.sch_delay.max.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.unlink_file_vma 3.05 ± 44% -41.8% 1.77 ± 71% perf-sched.sch_delay.max.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread 4.06 ± 10% -18.3% 3.32 ± 10% perf-sched.sch_delay.max.ms.worker_thread.kthread.ret_from_fork.ret_from_fork_asm 294.75 ±144% -97.1% 8.53 ± 34% perf-sched.total_sch_delay.max.ms 16.01 ± 5% -22.3% 12.44 ± 12% perf-sched.wait_and_delay.avg.ms.__cond_resched.__wait_for_common.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity 0.30 ± 39% -57.1% 0.13 ± 24% perf-sched.wait_and_delay.avg.ms.__cond_resched.down_read.open_last_lookups.path_openat.do_filp_open 0.23 ± 44% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.__cond_resched.dput.d_alloc_parallel.lookup_open.isra 0.31 ± 44% -53.9% 0.14 ± 42% perf-sched.wait_and_delay.avg.ms.__cond_resched.dput.terminate_walk.path_openat.do_filp_open 0.27 ± 48% -75.0% 0.07 ± 87% perf-sched.wait_and_delay.avg.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.irqentry_exit_to_user_mode.asm_sysvec_apic_timer_interrupt 319.33 ± 3% +20.3% 384.00 perf-sched.wait_and_delay.count.__cond_resched.__wait_for_common.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity 315.67 ± 8% +151.0% 792.33 ± 44% perf-sched.wait_and_delay.count.__cond_resched.down_read.walk_component.link_path_walk.part 64.67 ± 9% -100.0% 0.00 perf-sched.wait_and_delay.count.__cond_resched.dput.d_alloc_parallel.lookup_open.isra 308.00 ± 6% +156.7% 790.50 ± 43% perf-sched.wait_and_delay.count.__cond_resched.dput.step_into.link_path_walk.part 156.50 ± 9% +230.7% 517.50 ± 44% perf-sched.wait_and_delay.count.__cond_resched.dput.terminate_walk.path_openat.do_filp_open 5.99 ± 59% -36.6% 3.80 ± 17% perf-sched.wait_and_delay.max.ms.__cond_resched.down_read.open_last_lookups.path_openat.do_filp_open 3.70 ± 28% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.__cond_resched.dput.d_alloc_parallel.lookup_open.isra 16.00 ± 5% -22.3% 12.43 ± 12% perf-sched.wait_time.avg.ms.__cond_resched.__wait_for_common.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity 0.29 ± 41% -56.7% 0.13 ± 26% perf-sched.wait_time.avg.ms.__cond_resched.down_read.open_last_lookups.path_openat.do_filp_open 0.29 ± 44% -52.4% 0.14 ± 42% perf-sched.wait_time.avg.ms.__cond_resched.dput.terminate_walk.path_openat.do_filp_open 0.13 ± 74% -89.5% 0.01 ± 68% perf-sched.wait_time.avg.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.vma_prepare 5.99 ± 59% -36.6% 3.80 ± 17% perf-sched.wait_time.max.ms.__cond_resched.down_read.open_last_lookups.path_openat.do_filp_open 3.70 ± 28% -96.7% 0.12 ±196% perf-sched.wait_time.max.ms.__cond_resched.dput.d_alloc_parallel.lookup_open.isra 0.06 ±112% +2221.3% 1.45 ±125% perf-sched.wait_time.max.ms.__cond_resched.slab_pre_alloc_hook.constprop.0.kmem_cache_alloc_lru 0.30 ±108% -96.1% 0.01 ±131% perf-sched.wait_time.max.ms.__cond_resched.task_work_run.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode 1.81 ± 70% -94.0% 0.11 ±111% perf-sched.wait_time.max.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.vma_prepare 1.048e+10 -21.8% 8.197e+09 perf-stat.i.branch-instructions 1.00 -0.1 0.89 perf-stat.i.branch-miss-rate% 1.05e+08 -30.3% 73134213 ± 2% perf-stat.i.branch-misses 35.70 +0.3 35.98 perf-stat.i.cache-miss-rate% 1.008e+08 -24.9% 75751256 ± 3% perf-stat.i.cache-misses 2.83e+08 -25.4% 2.111e+08 ± 2% perf-stat.i.cache-references 4.49 +32.2% 5.93 perf-stat.i.cpi 174.91 ± 2% -4.7% 166.67 perf-stat.i.cpu-migrations 2252 +33.2% 3000 ± 3% perf-stat.i.cycles-between-cache-misses 0.05 ± 2% -0.0 0.05 ± 4% perf-stat.i.dTLB-load-miss-rate% 6988598 ± 2% -33.9% 4620724 ± 5% perf-stat.i.dTLB-load-misses 1.302e+10 -24.6% 9.823e+09 perf-stat.i.dTLB-loads 4558908 -36.1% 2913949 ± 5% perf-stat.i.dTLB-store-misses 5.495e+09 -35.3% 3.553e+09 ± 2% perf-stat.i.dTLB-stores 5.059e+10 -24.2% 3.834e+10 perf-stat.i.instructions 0.22 -24.2% 0.17 perf-stat.i.ipc 739.08 ± 2% -5.7% 697.01 ± 2% perf-stat.i.major-faults 968.40 -27.6% 701.00 ± 2% perf-stat.i.metric.K/sec 457.35 -25.6% 340.23 perf-stat.i.metric.M/sec 838500 -36.9% 529483 ± 6% perf-stat.i.minor-faults 86.42 +0.9 87.32 perf-stat.i.node-load-miss-rate% 25059767 -27.3% 18222191 ± 2% perf-stat.i.node-load-misses 4000499 -33.0% 2680018 ± 3% perf-stat.i.node-loads 50.38 +6.6 57.02 perf-stat.i.node-store-miss-rate% 13448084 -15.2% 11398580 ± 2% perf-stat.i.node-store-misses 13256380 -35.1% 8604744 ± 3% perf-stat.i.node-stores 839239 -36.8% 530180 ± 6% perf-stat.i.page-faults 1.00 -0.1 0.89 perf-stat.overall.branch-miss-rate% 4.47 +32.1% 5.90 perf-stat.overall.cpi 2240 +33.4% 2989 ± 3% perf-stat.overall.cycles-between-cache-misses 0.05 ± 2% -0.0 0.05 ± 4% perf-stat.overall.dTLB-load-miss-rate% 0.22 -24.3% 0.17 perf-stat.overall.ipc 86.23 +0.9 87.17 perf-stat.overall.node-load-miss-rate% 50.31 +6.7 56.98 perf-stat.overall.node-store-miss-rate% 1.031e+10 -21.8% 8.064e+09 perf-stat.ps.branch-instructions 1.033e+08 -30.4% 71969923 ± 2% perf-stat.ps.branch-misses 99277019 -24.9% 74527038 ± 3% perf-stat.ps.cache-misses 2.788e+08 -25.5% 2.078e+08 ± 2% perf-stat.ps.cache-references 172.95 ± 2% -5.0% 164.38 perf-stat.ps.cpu-migrations 6885676 ± 2% -33.9% 4553176 ± 5% perf-stat.ps.dTLB-load-misses 1.281e+10 -24.6% 9.664e+09 perf-stat.ps.dTLB-loads 4487277 -36.1% 2866955 ± 5% perf-stat.ps.dTLB-store-misses 5.409e+09 -35.4% 3.496e+09 ± 2% perf-stat.ps.dTLB-stores 4.978e+10 -24.2% 3.772e+10 perf-stat.ps.instructions 730.48 ± 2% -6.0% 686.30 ± 2% perf-stat.ps.major-faults 825030 -36.9% 520850 ± 6% perf-stat.ps.minor-faults 24668497 -27.3% 17925430 ± 2% perf-stat.ps.node-load-misses 3938602 -33.0% 2639269 ± 3% perf-stat.ps.node-loads 13233380 -15.3% 11211671 ± 2% perf-stat.ps.node-store-misses 13071889 -35.2% 8468100 ± 3% perf-stat.ps.node-stores 825761 -36.8% 521536 ± 6% perf-stat.ps.page-faults 3.025e+12 -24.2% 2.292e+12 perf-stat.total.instructions 17.91 -17.9 0.00 perf-profile.calltrace.cycles-pp.fast_dput.dput.terminate_walk.path_openat.do_filp_open 17.80 -17.8 0.00 perf-profile.calltrace.cycles-pp._raw_spin_lock.fast_dput.dput.terminate_walk.path_openat 17.76 -17.8 0.00 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.fast_dput.dput.terminate_walk 11.21 -11.2 0.00 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.lock_for_kill.dput.d_alloc_parallel 11.13 -11.1 0.00 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.fast_dput.dput.d_alloc_parallel 20.36 -11.0 9.34 perf-profile.calltrace.cycles-pp.dput.d_alloc_parallel.__lookup_slow.walk_component.link_path_walk 10.16 -10.2 0.00 perf-profile.calltrace.cycles-pp.lock_for_kill.dput.d_alloc_parallel.__lookup_slow.walk_component 10.12 -10.1 0.00 perf-profile.calltrace.cycles-pp._raw_spin_lock.lock_for_kill.dput.d_alloc_parallel.__lookup_slow 10.08 -10.1 0.00 perf-profile.calltrace.cycles-pp.fast_dput.dput.d_alloc_parallel.__lookup_slow.walk_component 10.03 -10.0 0.00 perf-profile.calltrace.cycles-pp._raw_spin_lock.fast_dput.dput.d_alloc_parallel.__lookup_slow 19.36 -7.3 12.05 perf-profile.calltrace.cycles-pp.open_last_lookups.path_openat.do_filp_open.do_sys_openat2.__x64_sys_openat 5.20 -5.2 0.00 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.lock_for_kill.dput.step_into 31.83 -4.1 27.72 perf-profile.calltrace.cycles-pp.d_alloc_parallel.__lookup_slow.walk_component.link_path_walk.path_openat 31.85 -4.0 27.81 perf-profile.calltrace.cycles-pp.__lookup_slow.walk_component.link_path_walk.path_openat.do_filp_open 5.99 -2.8 3.16 perf-profile.calltrace.cycles-pp.dput.step_into.open_last_lookups.path_openat.do_filp_open 6.51 -2.8 3.70 perf-profile.calltrace.cycles-pp.step_into.open_last_lookups.path_openat.do_filp_open.do_sys_openat2 6.06 -2.8 3.28 ± 2% perf-profile.calltrace.cycles-pp.lookup_open.open_last_lookups.path_openat.do_filp_open.do_sys_openat2 6.01 -2.8 3.24 ± 2% perf-profile.calltrace.cycles-pp.d_alloc_parallel.lookup_open.open_last_lookups.path_openat.do_filp_open 5.12 ± 2% -1.9 3.22 ± 4% perf-profile.calltrace.cycles-pp.ksys_mmap_pgoff.do_syscall_64.entry_SYSCALL_64_after_hwframe 5.08 -1.9 3.20 ± 4% perf-profile.calltrace.cycles-pp.vm_mmap_pgoff.ksys_mmap_pgoff.do_syscall_64.entry_SYSCALL_64_after_hwframe 4.90 ± 2% -1.8 3.10 ± 4% perf-profile.calltrace.cycles-pp.do_mmap.vm_mmap_pgoff.ksys_mmap_pgoff.do_syscall_64.entry_SYSCALL_64_after_hwframe 4.70 ± 2% -1.7 2.97 ± 4% perf-profile.calltrace.cycles-pp.mmap_region.do_mmap.vm_mmap_pgoff.ksys_mmap_pgoff.do_syscall_64 6.69 -1.7 5.01 ± 2% perf-profile.calltrace.cycles-pp.lookup_fast.open_last_lookups.path_openat.do_filp_open.do_sys_openat2 6.60 -1.6 4.95 ± 2% perf-profile.calltrace.cycles-pp.try_to_unlazy.lookup_fast.open_last_lookups.path_openat.do_filp_open 6.59 -1.6 4.95 ± 2% perf-profile.calltrace.cycles-pp.__legitimize_path.try_to_unlazy.lookup_fast.open_last_lookups.path_openat 6.59 -1.6 4.95 ± 2% perf-profile.calltrace.cycles-pp.lockref_get_not_dead.__legitimize_path.try_to_unlazy.lookup_fast.open_last_lookups 3.27 -1.4 1.88 ± 3% perf-profile.calltrace.cycles-pp.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe 3.26 -1.4 1.88 ± 3% perf-profile.calltrace.cycles-pp.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe 3.25 -1.4 1.87 ± 3% perf-profile.calltrace.cycles-pp.do_vmi_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe 3.21 -1.4 1.85 ± 3% perf-profile.calltrace.cycles-pp.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64 2.36 -1.0 1.34 ± 3% perf-profile.calltrace.cycles-pp.unmap_region.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap 2.65 ± 2% -1.0 1.69 ± 3% perf-profile.calltrace.cycles-pp.do_vmi_munmap.mmap_region.do_mmap.vm_mmap_pgoff.ksys_mmap_pgoff 2.58 ± 2% -0.9 1.65 ± 3% perf-profile.calltrace.cycles-pp.do_vmi_align_munmap.do_vmi_munmap.mmap_region.do_mmap.vm_mmap_pgoff 1.81 ± 2% -0.7 1.14 ± 3% perf-profile.calltrace.cycles-pp.__split_vma.do_vmi_align_munmap.do_vmi_munmap.mmap_region.do_mmap 1.38 ± 3% -0.7 0.71 ± 6% perf-profile.calltrace.cycles-pp.alloc_empty_file.path_openat.do_filp_open.do_sys_openat2.__x64_sys_openat 1.74 ± 2% -0.7 1.08 ± 5% perf-profile.calltrace.cycles-pp.asm_exc_page_fault 1.59 ± 2% -0.6 0.98 ± 5% perf-profile.calltrace.cycles-pp.exc_page_fault.asm_exc_page_fault 1.05 ± 4% -0.6 0.44 ± 44% perf-profile.calltrace.cycles-pp.init_file.alloc_empty_file.path_openat.do_filp_open.do_sys_openat2 1.58 ± 2% -0.6 0.97 ± 5% perf-profile.calltrace.cycles-pp.do_user_addr_fault.exc_page_fault.asm_exc_page_fault 1.38 ± 2% -0.5 0.85 ± 5% perf-profile.calltrace.cycles-pp.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault 1.30 ± 2% -0.5 0.80 ± 5% perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault 0.84 ± 3% -0.5 0.35 ± 70% perf-profile.calltrace.cycles-pp.do_read_fault.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault 3.60 -0.5 3.13 ± 2% perf-profile.calltrace.cycles-pp.d_alloc.d_alloc_parallel.lookup_open.open_last_lookups.path_openat 3.54 -0.5 3.09 perf-profile.calltrace.cycles-pp._raw_spin_lock.d_alloc.d_alloc_parallel.lookup_open.open_last_lookups 3.47 -0.4 3.05 ± 2% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.d_alloc.d_alloc_parallel.lookup_open 1.08 ± 2% -0.4 0.66 ± 6% perf-profile.calltrace.cycles-pp.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault 0.79 ± 4% -0.3 0.51 ± 3% perf-profile.calltrace.cycles-pp.vma_prepare.__split_vma.do_vmi_align_munmap.do_vmi_munmap.mmap_region 0.35 ± 70% +0.2 0.54 perf-profile.calltrace.cycles-pp.pick_link.step_into.open_last_lookups.path_openat.do_filp_open 96.74 +1.2 97.95 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe 96.70 +1.2 97.92 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe 43.79 +2.2 46.02 perf-profile.calltrace.cycles-pp.walk_component.link_path_walk.path_openat.do_filp_open.do_sys_openat2 0.00 +3.1 3.12 perf-profile.calltrace.cycles-pp._raw_spin_lock.__dentry_kill.dput.step_into.open_last_lookups 0.00 +3.2 3.15 perf-profile.calltrace.cycles-pp.__dentry_kill.dput.step_into.open_last_lookups.path_openat 18.05 +4.6 22.68 perf-profile.calltrace.cycles-pp._raw_spin_lock.lockref_get_not_dead.__legitimize_path.try_to_unlazy.lookup_fast 17.98 +4.7 22.69 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.lockref_get_not_dead.__legitimize_path.try_to_unlazy 87.45 +4.8 92.28 perf-profile.calltrace.cycles-pp.__x64_sys_openat.do_syscall_64.entry_SYSCALL_64_after_hwframe 87.43 +4.8 92.26 perf-profile.calltrace.cycles-pp.do_sys_openat2.__x64_sys_openat.do_syscall_64.entry_SYSCALL_64_after_hwframe 86.69 +5.1 91.80 perf-profile.calltrace.cycles-pp.do_filp_open.do_sys_openat2.__x64_sys_openat.do_syscall_64.entry_SYSCALL_64_after_hwframe 86.61 +5.1 91.75 perf-profile.calltrace.cycles-pp.path_openat.do_filp_open.do_sys_openat2.__x64_sys_openat.do_syscall_64 17.94 +5.4 23.31 perf-profile.calltrace.cycles-pp.terminate_walk.path_openat.do_filp_open.do_sys_openat2.__x64_sys_openat 17.92 +5.4 23.30 perf-profile.calltrace.cycles-pp.dput.terminate_walk.path_openat.do_filp_open.do_sys_openat2 2.66 +6.1 8.79 ± 2% perf-profile.calltrace.cycles-pp.step_into.link_path_walk.path_openat.do_filp_open.do_sys_openat2 2.63 +6.1 8.77 ± 2% perf-profile.calltrace.cycles-pp.dput.step_into.link_path_walk.path_openat.do_filp_open 11.73 +6.2 17.98 perf-profile.calltrace.cycles-pp.lookup_fast.walk_component.link_path_walk.path_openat.do_filp_open 11.61 +6.3 17.88 perf-profile.calltrace.cycles-pp.try_to_unlazy.lookup_fast.walk_component.link_path_walk.path_openat 11.60 +6.3 17.87 perf-profile.calltrace.cycles-pp.lockref_get_not_dead.__legitimize_path.try_to_unlazy.lookup_fast.walk_component 11.61 +6.3 17.88 perf-profile.calltrace.cycles-pp.__legitimize_path.try_to_unlazy.lookup_fast.walk_component.link_path_walk 11.02 +6.7 17.67 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.d_alloc.d_alloc_parallel.__lookup_slow 11.14 +6.7 17.83 perf-profile.calltrace.cycles-pp._raw_spin_lock.d_alloc.d_alloc_parallel.__lookup_slow.walk_component 11.25 +6.7 18.00 perf-profile.calltrace.cycles-pp.d_alloc.d_alloc_parallel.__lookup_slow.walk_component.link_path_walk 46.59 +8.3 54.90 perf-profile.calltrace.cycles-pp.link_path_walk.path_openat.do_filp_open.do_sys_openat2.__x64_sys_openat 0.00 +8.6 8.64 ± 2% perf-profile.calltrace.cycles-pp._raw_spin_lock.__dentry_kill.dput.step_into.link_path_walk 0.00 +8.7 8.72 ± 2% perf-profile.calltrace.cycles-pp.__dentry_kill.dput.step_into.link_path_walk.path_openat 0.00 +9.2 9.17 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.__dentry_kill.dput.d_alloc_parallel 0.00 +9.3 9.26 perf-profile.calltrace.cycles-pp._raw_spin_lock.__dentry_kill.dput.d_alloc_parallel.__lookup_slow 0.00 +9.3 9.33 perf-profile.calltrace.cycles-pp.__dentry_kill.dput.d_alloc_parallel.__lookup_slow.walk_component 0.00 +11.6 11.63 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.__dentry_kill.dput.step_into 0.00 +23.1 23.15 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.dput.terminate_walk.path_openat 0.00 +23.2 23.18 perf-profile.calltrace.cycles-pp._raw_spin_lock.dput.terminate_walk.path_openat.do_filp_open 32.44 -32.4 0.00 perf-profile.children.cycles-pp.fast_dput 16.62 -16.6 0.00 perf-profile.children.cycles-pp.lock_for_kill 19.36 -7.3 12.06 perf-profile.children.cycles-pp.open_last_lookups 37.84 -6.9 30.96 perf-profile.children.cycles-pp.d_alloc_parallel 49.26 -4.6 44.64 perf-profile.children.cycles-pp.dput 31.85 -4.0 27.81 perf-profile.children.cycles-pp.__lookup_slow 6.06 -2.8 3.28 ± 2% perf-profile.children.cycles-pp.lookup_open 5.96 -2.4 3.60 ± 3% perf-profile.children.cycles-pp.do_vmi_munmap 5.86 -2.3 3.54 ± 3% perf-profile.children.cycles-pp.do_vmi_align_munmap 5.17 -1.9 3.25 ± 4% perf-profile.children.cycles-pp.vm_mmap_pgoff 5.12 -1.9 3.22 ± 4% perf-profile.children.cycles-pp.ksys_mmap_pgoff 4.99 ± 2% -1.8 3.16 ± 4% perf-profile.children.cycles-pp.do_mmap 4.79 ± 2% -1.8 3.03 ± 4% perf-profile.children.cycles-pp.mmap_region 3.27 -1.4 1.89 ± 3% perf-profile.children.cycles-pp.__x64_sys_munmap 3.26 -1.4 1.88 ± 3% perf-profile.children.cycles-pp.__vm_munmap 2.88 ± 2% -1.2 1.69 ± 3% perf-profile.children.cycles-pp.unmap_region 2.36 ± 2% -0.9 1.48 ± 3% perf-profile.children.cycles-pp.__split_vma 1.80 ± 2% -0.7 1.11 ± 5% perf-profile.children.cycles-pp.asm_exc_page_fault 1.39 ± 3% -0.7 0.72 ± 6% perf-profile.children.cycles-pp.alloc_empty_file 1.63 ± 2% -0.6 1.00 ± 5% perf-profile.children.cycles-pp.exc_page_fault 1.62 ± 2% -0.6 1.00 ± 5% perf-profile.children.cycles-pp.do_user_addr_fault 1.42 ± 2% -0.6 0.87 ± 5% perf-profile.children.cycles-pp.handle_mm_fault 1.06 ± 4% -0.5 0.52 ± 8% perf-profile.children.cycles-pp.init_file 1.40 ± 5% -0.5 0.87 ± 4% perf-profile.children.cycles-pp.down_write 1.24 ± 3% -0.5 0.72 ± 2% perf-profile.children.cycles-pp.free_pgtables 1.34 ± 2% -0.5 0.82 ± 5% perf-profile.children.cycles-pp.__handle_mm_fault 1.01 ± 4% -0.5 0.49 ± 7% perf-profile.children.cycles-pp.security_file_alloc 0.89 ± 4% -0.5 0.42 ± 8% perf-profile.children.cycles-pp.apparmor_file_alloc_security 1.14 ± 6% -0.4 0.70 ± 4% perf-profile.children.cycles-pp.rwsem_down_write_slowpath 1.11 ± 2% -0.4 0.68 ± 6% perf-profile.children.cycles-pp.do_fault 1.06 -0.4 0.64 ± 4% perf-profile.children.cycles-pp.kmem_cache_alloc 0.99 ± 3% -0.4 0.57 ± 3% perf-profile.children.cycles-pp.unlink_file_vma 1.07 ± 6% -0.4 0.66 ± 4% perf-profile.children.cycles-pp.rwsem_optimistic_spin 1.10 ± 4% -0.4 0.71 ± 3% perf-profile.children.cycles-pp.vma_prepare 1.03 ± 9% -0.4 0.68 ± 8% perf-profile.children.cycles-pp.irq_exit_rcu 0.87 ± 2% -0.4 0.52 ± 7% perf-profile.children.cycles-pp.do_read_fault 0.79 ± 3% -0.3 0.44 ± 4% perf-profile.children.cycles-pp.release_empty_file 0.85 ± 2% -0.3 0.51 ± 7% perf-profile.children.cycles-pp.filemap_map_pages 1.04 ± 9% -0.3 0.70 ± 7% perf-profile.children.cycles-pp.rcu_core 1.04 ± 9% -0.3 0.70 ± 7% perf-profile.children.cycles-pp.rcu_do_batch 1.04 ± 8% -0.3 0.71 ± 7% perf-profile.children.cycles-pp.__do_softirq 1.38 ± 7% -0.3 1.04 ± 5% perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt 1.36 ± 7% -0.3 1.02 ± 5% perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt 0.57 ± 4% -0.3 0.24 ± 8% perf-profile.children.cycles-pp.security_file_free 0.56 ± 4% -0.3 0.23 ± 9% perf-profile.children.cycles-pp.apparmor_file_free_security 0.88 ± 2% -0.3 0.56 ± 4% perf-profile.children.cycles-pp.vma_interval_tree_insert 0.76 ± 2% -0.3 0.44 ± 4% perf-profile.children.cycles-pp.unmap_vmas 0.78 ± 2% -0.3 0.47 ± 5% perf-profile.children.cycles-pp.tlb_finish_mmu 0.80 -0.3 0.50 ± 4% perf-profile.children.cycles-pp.__x64_sys_mprotect 0.80 ± 2% -0.3 0.50 ± 3% perf-profile.children.cycles-pp.do_mprotect_pkey 0.77 ± 2% -0.3 0.47 ± 3% perf-profile.children.cycles-pp._dl_catch_exception 0.70 ± 2% -0.3 0.40 ± 4% perf-profile.children.cycles-pp.unmap_page_range 0.81 -0.3 0.51 ± 4% perf-profile.children.cycles-pp.vma_complete 0.65 ± 2% -0.3 0.37 ± 5% perf-profile.children.cycles-pp.zap_pmd_range 0.69 ± 2% -0.3 0.43 ± 4% perf-profile.children.cycles-pp.mprotect_fixup 0.62 ± 2% -0.3 0.36 ± 5% perf-profile.children.cycles-pp.zap_pte_range 0.67 -0.3 0.42 ± 3% perf-profile.children.cycles-pp.mas_store_prealloc 0.56 -0.2 0.34 ± 3% perf-profile.children.cycles-pp.mas_store_gfp 0.54 ± 2% -0.2 0.32 ± 8% perf-profile.children.cycles-pp.next_uptodate_folio 0.56 -0.2 0.33 ± 3% perf-profile.children.cycles-pp.perf_event_mmap 0.50 ± 10% -0.2 0.28 ± 4% perf-profile.children.cycles-pp.osq_lock 0.54 -0.2 0.32 ± 3% perf-profile.children.cycles-pp.perf_event_mmap_event 0.56 ± 3% -0.2 0.35 ± 4% perf-profile.children.cycles-pp.vma_modify 0.60 ± 4% -0.2 0.39 ± 4% perf-profile.children.cycles-pp.kmem_cache_free 0.49 ± 2% -0.2 0.30 ± 5% perf-profile.children.cycles-pp.flush_tlb_mm_range 0.46 ± 2% -0.2 0.29 ± 5% perf-profile.children.cycles-pp.flush_tlb_func 0.44 ± 2% -0.2 0.27 ± 4% perf-profile.children.cycles-pp.native_flush_tlb_one_user 0.45 ± 2% -0.2 0.28 ± 2% perf-profile.children.cycles-pp.vma_interval_tree_remove 0.50 ± 2% -0.2 0.34 ± 4% perf-profile.children.cycles-pp.rwsem_spin_on_owner 0.41 ± 2% -0.2 0.25 ± 3% perf-profile.children.cycles-pp.up_write 0.38 -0.1 0.24 ± 6% perf-profile.children.cycles-pp.getname_flags 0.44 ± 8% -0.1 0.30 ± 8% perf-profile.children.cycles-pp.__slab_free 0.36 -0.1 0.22 ± 3% perf-profile.children.cycles-pp.mas_wr_store_entry 0.30 ± 4% -0.1 0.16 ± 7% perf-profile.children.cycles-pp.do_open 0.38 -0.1 0.24 ± 3% perf-profile.children.cycles-pp.memcg_slab_post_alloc_hook 0.35 -0.1 0.22 ± 3% perf-profile.children.cycles-pp.mas_wr_bnode 0.30 ± 2% -0.1 0.17 ± 6% perf-profile.children.cycles-pp.syscall_exit_to_user_mode 0.31 ± 2% -0.1 0.18 ± 4% perf-profile.children.cycles-pp.mas_wr_spanning_store 0.27 ± 3% -0.1 0.15 ± 5% perf-profile.children.cycles-pp.tlb_batch_pages_flush 0.26 -0.1 0.16 ± 4% perf-profile.children.cycles-pp.vm_area_dup 0.25 ± 4% -0.1 0.14 ± 3% perf-profile.children.cycles-pp.exit_to_user_mode_prepare 0.27 -0.1 0.17 ± 4% perf-profile.children.cycles-pp.perf_iterate_sb 0.23 -0.1 0.13 ± 13% perf-profile.children.cycles-pp._compound_head 0.21 ± 5% -0.1 0.11 ± 6% perf-profile.children.cycles-pp.do_dentry_open 0.23 ± 4% -0.1 0.13 ± 5% perf-profile.children.cycles-pp.exit_to_user_mode_loop 0.26 -0.1 0.16 ± 5% perf-profile.children.cycles-pp.mas_split 0.26 ± 9% -0.1 0.16 ± 8% perf-profile.children.cycles-pp.vm_area_free_rcu_cb 0.26 ± 3% -0.1 0.16 ± 6% perf-profile.children.cycles-pp.strncpy_from_user 0.22 ± 4% -0.1 0.12 ± 3% perf-profile.children.cycles-pp.task_work_run 0.24 -0.1 0.15 ± 4% perf-profile.children.cycles-pp.mas_preallocate 0.24 -0.1 0.14 ± 3% perf-profile.children.cycles-pp.mas_spanning_rebalance 0.24 ± 2% -0.1 0.14 ± 5% perf-profile.children.cycles-pp.perf_event_mmap_output 0.23 -0.1 0.14 ± 4% perf-profile.children.cycles-pp.mas_alloc_nodes 0.23 ± 2% -0.1 0.14 ± 7% perf-profile.children.cycles-pp.vm_area_alloc 0.22 ± 3% -0.1 0.13 ± 2% perf-profile.children.cycles-pp.mas_wr_node_store 0.24 ± 5% -0.1 0.16 ± 4% perf-profile.children.cycles-pp.mod_objcg_state 0.22 ± 2% -0.1 0.14 ± 8% perf-profile.children.cycles-pp.___slab_alloc 0.23 ± 3% -0.1 0.15 ± 3% perf-profile.children.cycles-pp.do_cow_fault 0.24 ± 3% -0.1 0.15 ± 3% perf-profile.children.cycles-pp.lockref_put_return 0.19 ± 4% -0.1 0.11 ± 9% perf-profile.children.cycles-pp.release_pages 0.18 ± 4% -0.1 0.10 ± 6% perf-profile.children.cycles-pp.__fput 0.21 ± 3% -0.1 0.14 ± 4% perf-profile.children.cycles-pp.vma_expand 0.17 ± 3% -0.1 0.10 ± 5% perf-profile.children.cycles-pp.set_pte_range 0.18 ± 2% -0.1 0.11 ± 6% perf-profile.children.cycles-pp.get_unmapped_area 0.20 ± 6% -0.1 0.14 ± 10% perf-profile.children.cycles-pp.rcu_cblist_dequeue 0.17 ± 2% -0.1 0.10 ± 7% perf-profile.children.cycles-pp.mas_walk 0.18 ± 2% -0.1 0.11 ± 6% perf-profile.children.cycles-pp.__cond_resched 0.16 -0.1 0.10 ± 5% perf-profile.children.cycles-pp.mtree_range_walk 0.14 ± 2% -0.1 0.08 ± 4% perf-profile.children.cycles-pp.d_path 0.11 ± 6% -0.1 0.04 ± 45% perf-profile.children.cycles-pp.security_mmap_file 0.10 ± 5% -0.1 0.03 ± 70% perf-profile.children.cycles-pp.apparmor_mmap_file 0.16 ± 4% -0.1 0.10 ± 10% perf-profile.children.cycles-pp.arch_get_unmapped_area_topdown 0.13 ± 5% -0.1 0.07 ± 6% perf-profile.children.cycles-pp.page_remove_rmap 0.14 -0.1 0.08 ± 8% perf-profile.children.cycles-pp.allocate_slab 0.14 ± 3% -0.1 0.09 ± 7% perf-profile.children.cycles-pp.mas_find 0.15 -0.1 0.09 ± 7% perf-profile.children.cycles-pp.mas_topiary_replace 0.14 -0.1 0.08 ± 5% perf-profile.children.cycles-pp.kmem_cache_alloc_bulk 0.14 ± 6% -0.1 0.08 ± 5% perf-profile.children.cycles-pp.__check_object_size 0.27 -0.1 0.22 ± 4% perf-profile.children.cycles-pp.__call_rcu_common 0.14 ± 2% -0.1 0.09 ± 5% perf-profile.children.cycles-pp.percpu_counter_add_batch 0.13 ± 2% -0.1 0.08 ± 4% perf-profile.children.cycles-pp.sync_regs 0.14 ± 4% -0.1 0.09 ± 4% perf-profile.children.cycles-pp.__rb_insert_augmented 0.14 ± 3% -0.1 0.08 ± 8% perf-profile.children.cycles-pp.wp_page_copy 0.08 ± 6% -0.0 0.02 ± 99% perf-profile.children.cycles-pp.mas_update_gap 0.14 ± 3% -0.0 0.09 ± 8% perf-profile.children.cycles-pp.vm_unmapped_area 0.12 ± 4% -0.0 0.08 ± 6% perf-profile.children.cycles-pp.__kmem_cache_alloc_bulk 0.12 ± 3% -0.0 0.07 ± 6% perf-profile.children.cycles-pp.alloc_fd 0.12 ± 4% -0.0 0.08 ± 6% perf-profile.children.cycles-pp.mas_push_data 0.12 ± 4% -0.0 0.07 ± 5% perf-profile.children.cycles-pp.__rb_erase_color 0.10 ± 4% -0.0 0.06 ± 9% perf-profile.children.cycles-pp.shuffle_freelist 0.10 ± 3% -0.0 0.06 ± 9% perf-profile.children.cycles-pp.mas_next_slot 0.10 ± 4% -0.0 0.06 ± 6% perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack 0.11 ± 6% -0.0 0.07 ± 5% perf-profile.children.cycles-pp.vfs_read 0.10 ± 5% -0.0 0.06 ± 8% perf-profile.children.cycles-pp.prepend_path 0.07 ± 5% -0.0 0.03 ± 70% perf-profile.children.cycles-pp.check_heap_object 0.10 ± 4% -0.0 0.06 ± 7% perf-profile.children.cycles-pp.lock_vma_under_rcu 0.12 ± 4% -0.0 0.08 ± 8% perf-profile.children.cycles-pp.native_irq_return_iret 0.10 -0.0 0.06 ± 7% perf-profile.children.cycles-pp.obj_cgroup_charge 0.09 -0.0 0.05 ± 8% perf-profile.children.cycles-pp.lru_add_drain 0.09 ± 6% -0.0 0.05 ± 8% perf-profile.children.cycles-pp.mab_mas_cp 0.08 ± 4% -0.0 0.04 ± 44% perf-profile.children.cycles-pp.mas_destroy 0.08 -0.0 0.04 ± 45% perf-profile.children.cycles-pp.__perf_sw_event 0.11 ± 6% -0.0 0.07 ± 5% perf-profile.children.cycles-pp.ksys_read 0.10 ± 6% -0.0 0.06 ± 6% perf-profile.children.cycles-pp.__do_sys_newfstat 0.10 ± 9% -0.0 0.07 ± 5% perf-profile.children.cycles-pp.alloc_pages_mpol 0.09 ± 4% -0.0 0.05 ± 8% perf-profile.children.cycles-pp.lru_add_drain_cpu 0.10 ± 5% -0.0 0.06 ± 6% perf-profile.children.cycles-pp.mas_wr_walk 0.09 ± 5% -0.0 0.06 ± 9% perf-profile.children.cycles-pp.mas_empty_area_rev 0.07 ± 5% -0.0 0.04 ± 44% perf-profile.children.cycles-pp.__pte_offset_map_lock 0.09 ± 7% -0.0 0.06 perf-profile.children.cycles-pp.__alloc_pages 0.08 -0.0 0.05 ± 7% perf-profile.children.cycles-pp.vma_interval_tree_augment_rotate 0.08 ± 4% -0.0 0.05 ± 8% perf-profile.children.cycles-pp.__memcpy 0.08 ± 4% -0.0 0.05 perf-profile.children.cycles-pp.mas_prev_slot 0.12 ± 3% -0.0 0.10 ± 4% perf-profile.children.cycles-pp.up_read 0.08 ± 8% -0.0 0.06 ± 6% perf-profile.children.cycles-pp._raw_spin_lock_irqsave 0.16 ± 5% +0.0 0.19 ± 3% perf-profile.children.cycles-pp.down_read 0.06 ± 6% +0.1 0.12 ± 4% perf-profile.children.cycles-pp.simple_lookup 0.05 ± 7% +0.1 0.11 ± 5% perf-profile.children.cycles-pp.__d_add 97.48 +0.9 98.42 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 97.44 +1.0 98.40 perf-profile.children.cycles-pp.do_syscall_64 43.80 +2.2 46.04 perf-profile.children.cycles-pp.walk_component 9.17 +3.3 12.49 perf-profile.children.cycles-pp.step_into 18.44 +4.6 23.01 perf-profile.children.cycles-pp.lookup_fast 18.86 +4.6 23.51 perf-profile.children.cycles-pp.lockref_get_not_dead 18.70 +4.7 23.37 perf-profile.children.cycles-pp.__legitimize_path 18.71 +4.7 23.38 perf-profile.children.cycles-pp.try_to_unlazy 87.46 +4.8 92.29 perf-profile.children.cycles-pp.__x64_sys_openat 87.45 +4.8 92.28 perf-profile.children.cycles-pp.do_sys_openat2 86.70 +5.1 91.81 perf-profile.children.cycles-pp.do_filp_open 86.63 +5.1 91.77 perf-profile.children.cycles-pp.path_openat 17.95 +5.4 23.33 perf-profile.children.cycles-pp.terminate_walk 14.86 +6.3 21.14 perf-profile.children.cycles-pp.d_alloc 82.15 +6.4 88.52 perf-profile.children.cycles-pp._raw_spin_lock 81.53 +6.4 87.92 perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath 46.61 +8.3 54.92 perf-profile.children.cycles-pp.link_path_walk 0.17 ± 2% +21.1 21.25 perf-profile.children.cycles-pp.__dentry_kill 0.88 ± 4% -0.5 0.41 ± 8% perf-profile.self.cycles-pp.apparmor_file_alloc_security 0.56 ± 5% -0.3 0.23 ± 9% perf-profile.self.cycles-pp.apparmor_file_free_security 0.87 ± 2% -0.3 0.55 ± 4% perf-profile.self.cycles-pp.vma_interval_tree_insert 0.49 ± 10% -0.2 0.28 ± 4% perf-profile.self.cycles-pp.osq_lock 0.51 ± 2% -0.2 0.30 ± 8% perf-profile.self.cycles-pp.next_uptodate_folio 0.44 ± 2% -0.2 0.27 ± 4% perf-profile.self.cycles-pp.native_flush_tlb_one_user 0.50 ± 2% -0.2 0.33 ± 5% perf-profile.self.cycles-pp.rwsem_spin_on_owner 0.44 ± 3% -0.2 0.28 ± 2% perf-profile.self.cycles-pp.vma_interval_tree_remove 0.40 ± 2% -0.2 0.25 ± 3% perf-profile.self.cycles-pp.up_write 0.37 -0.2 0.22 ± 3% perf-profile.self.cycles-pp.kmem_cache_alloc 0.42 ± 8% -0.1 0.29 ± 8% perf-profile.self.cycles-pp.__slab_free 0.37 ± 3% -0.1 0.24 ± 4% perf-profile.self.cycles-pp.kmem_cache_free 0.28 -0.1 0.17 ± 4% perf-profile.self.cycles-pp.memcg_slab_post_alloc_hook 0.22 -0.1 0.12 ± 14% perf-profile.self.cycles-pp._compound_head 0.23 ± 3% -0.1 0.14 ± 6% perf-profile.self.cycles-pp.down_write 0.24 ± 2% -0.1 0.15 ± 3% perf-profile.self.cycles-pp.lockref_put_return 0.22 ± 4% -0.1 0.14 ± 3% perf-profile.self.cycles-pp.mod_objcg_state 0.20 ± 6% -0.1 0.13 ± 9% perf-profile.self.cycles-pp.rcu_cblist_dequeue 0.17 ± 3% -0.1 0.10 ± 5% perf-profile.self.cycles-pp.zap_pte_range 0.34 -0.1 0.27 ± 2% perf-profile.self.cycles-pp.lockref_get_not_dead 0.16 ± 2% -0.1 0.10 ± 5% perf-profile.self.cycles-pp.mtree_range_walk 0.09 ± 5% -0.1 0.03 ± 70% perf-profile.self.cycles-pp.apparmor_mmap_file 0.15 ± 3% -0.1 0.09 ± 6% perf-profile.self.cycles-pp.filemap_map_pages 0.14 ± 3% -0.1 0.08 ± 7% perf-profile.self.cycles-pp.percpu_counter_add_batch 0.08 ± 8% -0.1 0.02 ± 99% perf-profile.self.cycles-pp.link_path_walk 0.13 ± 5% -0.1 0.08 ± 4% perf-profile.self.cycles-pp.__rb_insert_augmented 0.12 ± 4% -0.0 0.06 ± 7% perf-profile.self.cycles-pp.page_remove_rmap 0.08 ± 6% -0.0 0.02 ± 99% perf-profile.self.cycles-pp.__split_vma 0.07 ± 6% -0.0 0.02 ± 99% perf-profile.self.cycles-pp.rwsem_down_write_slowpath 0.13 -0.0 0.08 ± 4% perf-profile.self.cycles-pp.sync_regs 0.12 ± 4% -0.0 0.07 ± 9% perf-profile.self.cycles-pp.perf_event_mmap_output 0.08 -0.0 0.03 ± 70% perf-profile.self.cycles-pp.shuffle_freelist 0.07 ± 5% -0.0 0.02 ± 99% perf-profile.self.cycles-pp.do_filp_open 0.12 ± 3% -0.0 0.08 ± 8% perf-profile.self.cycles-pp.do_vmi_align_munmap 0.09 ± 5% -0.0 0.04 ± 45% perf-profile.self.cycles-pp.mas_next_slot 0.12 ± 4% -0.0 0.08 ± 6% perf-profile.self.cycles-pp.strncpy_from_user 0.08 ± 6% -0.0 0.03 ± 70% perf-profile.self.cycles-pp.mab_mas_cp 0.11 ± 5% -0.0 0.07 ± 5% perf-profile.self.cycles-pp.mas_wr_node_store 0.10 -0.0 0.06 perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack 0.09 ± 5% -0.0 0.06 ± 13% perf-profile.self.cycles-pp.release_pages 0.11 ± 3% -0.0 0.07 perf-profile.self.cycles-pp.__cond_resched 0.10 ± 5% -0.0 0.06 ± 6% perf-profile.self.cycles-pp.__rb_erase_color 0.12 ± 4% -0.0 0.08 ± 4% perf-profile.self.cycles-pp.__call_rcu_common 0.12 ± 4% -0.0 0.08 ± 8% perf-profile.self.cycles-pp.native_irq_return_iret 0.10 ± 3% -0.0 0.06 ± 11% perf-profile.self.cycles-pp.mas_topiary_replace 0.10 ± 4% -0.0 0.06 ± 11% perf-profile.self.cycles-pp.mmap_region 0.09 ± 4% -0.0 0.06 ± 6% perf-profile.self.cycles-pp.mas_wr_walk 0.22 ± 3% -0.0 0.20 ± 4% perf-profile.self.cycles-pp.__d_lookup_rcu 0.07 -0.0 0.04 ± 44% perf-profile.self.cycles-pp.obj_cgroup_charge 0.08 -0.0 0.05 ± 7% perf-profile.self.cycles-pp.vma_interval_tree_augment_rotate 0.12 ± 3% -0.0 0.10 ± 4% perf-profile.self.cycles-pp.up_read 0.15 ± 3% +0.0 0.18 ± 3% perf-profile.self.cycles-pp.down_read 0.00 +0.1 0.08 ± 5% perf-profile.self.cycles-pp.__dentry_kill 0.10 ± 5% +0.1 0.22 ± 2% perf-profile.self.cycles-pp.d_alloc_parallel 80.37 +6.6 86.99 perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath *************************************************************************************************** lkp-icl-2sp7: 64 threads 2 sockets Intel(R) Xeon(R) Gold 6346 CPU @ 3.10GHz (Ice Lake) with 256G memory ========================================================================================= class/compiler/cpufreq_governor/disk/fs/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime: os/gcc-12/performance/1HDD/ext4/x86_64-rhel-8.3/10%/debian-11.1-x86_64-20220510.cgz/lkp-icl-2sp7/sysinfo/stress-ng/60s commit: b4cc0734d2 ("d_prune_aliases(): use a shrink list") 1c18edd1b7 ("__dentry_kill(): new locking scheme") b4cc0734d25746d4 1c18edd1b7a068e07fed7f00e05 ---------------- --------------------------- %stddev %change %stddev \ | \ 0.10 ± 4% -14.3% 0.09 turbostat.IPC 338724 ± 3% -30.5% 235420 ± 3% stress-ng.sysinfo.ops 5645 ± 3% -30.5% 3923 ± 3% stress-ng.sysinfo.ops_per_sec 463895 +9.8% 509584 proc-vmstat.numa_hit 395830 +12.0% 443348 proc-vmstat.numa_local 551165 +15.9% 639027 proc-vmstat.pgalloc_normal 508650 +17.5% 597607 proc-vmstat.pgfree 0.17 ± 55% -85.9% 0.02 ± 76% perf-sched.wait_and_delay.avg.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64 2.11 ±149% -89.5% 0.22 ±109% perf-sched.wait_and_delay.max.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64 0.17 ± 46% -70.0% 0.05 ± 81% perf-sched.wait_time.avg.ms.__cond_resched.down_read.kernfs_iop_permission.inode_permission.link_path_walk 0.16 ± 64% -70.7% 0.05 ±151% perf-sched.wait_time.avg.ms.__cond_resched.dput.d_alloc_parallel.__lookup_slow.walk_component 0.24 ± 74% -94.1% 0.01 ± 96% perf-sched.wait_time.avg.ms.__cond_resched.dput.path_put.vfs_statx.__do_sys_newstat 0.17 ± 55% -84.1% 0.03 ± 58% perf-sched.wait_time.avg.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64 0.69 ± 44% -78.2% 0.15 ±117% perf-sched.wait_time.max.ms.__cond_resched.down_read.kernfs_iop_permission.inode_permission.link_path_walk 0.57 ± 68% -86.1% 0.08 ±172% perf-sched.wait_time.max.ms.__cond_resched.dput.d_alloc_parallel.__lookup_slow.walk_component 0.53 ± 42% -96.1% 0.02 ± 97% perf-sched.wait_time.max.ms.__cond_resched.dput.path_put.vfs_statx.__do_sys_newstat 2.11 ±149% -86.9% 0.28 ± 85% perf-sched.wait_time.max.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64 1.71 ± 4% +9.4% 1.87 ± 4% perf-stat.i.MPKI 1.161e+09 ± 2% -14.0% 9.982e+08 perf-stat.i.branch-instructions 23875764 ± 3% -8.9% 21751878 ± 2% perf-stat.i.cache-references 3.82 ± 2% +20.6% 4.61 perf-stat.i.cpi 1.474e+09 ± 2% -15.4% 1.247e+09 perf-stat.i.dTLB-loads 47417 ± 11% -12.5% 41490 perf-stat.i.dTLB-store-misses 7.252e+08 ± 3% -20.1% 5.793e+08 ± 2% perf-stat.i.dTLB-stores 5.773e+09 ± 2% -15.2% 4.895e+09 ± 2% perf-stat.i.instructions 0.27 ± 2% -15.7% 0.23 perf-stat.i.ipc 517.29 ± 2% -8.9% 471.04 ± 2% perf-stat.i.metric.K/sec 52.46 ± 2% -16.0% 44.08 perf-stat.i.metric.M/sec 87.04 +2.5 89.49 perf-stat.i.node-store-miss-rate% 571361 ± 6% -22.1% 445036 ± 4% perf-stat.i.node-stores 1.61 ± 4% +7.4% 1.73 ± 4% perf-stat.overall.MPKI 3.60 ± 2% +18.1% 4.25 perf-stat.overall.cpi 0.28 ± 2% -15.3% 0.24 perf-stat.overall.ipc 86.25 +2.3 88.53 perf-stat.overall.node-store-miss-rate% 1.141e+09 ± 2% -14.0% 9.808e+08 perf-stat.ps.branch-instructions 23469608 ± 3% -8.9% 21382589 ± 2% perf-stat.ps.cache-references 1.449e+09 ± 2% -15.4% 1.225e+09 perf-stat.ps.dTLB-loads 46583 ± 11% -12.5% 40740 perf-stat.ps.dTLB-store-misses 7.129e+08 ± 3% -20.1% 5.694e+08 ± 2% perf-stat.ps.dTLB-stores 5.674e+09 ± 2% -15.2% 4.809e+09 ± 2% perf-stat.ps.instructions 560788 ± 6% -22.2% 436272 ± 4% perf-stat.ps.node-stores 3.437e+11 ± 2% -14.8% 2.927e+11 perf-stat.total.instructions 18.99 ± 2% -19.0 0.00 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.fast_dput.dput.terminate_walk 18.47 -18.5 0.00 perf-profile.calltrace.cycles-pp.fast_dput.dput.terminate_walk.path_lookupat.filename_lookup 17.16 -17.2 0.00 perf-profile.calltrace.cycles-pp._raw_spin_lock.fast_dput.dput.terminate_walk.path_lookupat 8.33 -7.6 0.74 ± 10% perf-profile.calltrace.cycles-pp.dput.d_alloc_parallel.__lookup_slow.walk_component.path_lookupat 16.71 -4.2 12.53 perf-profile.calltrace.cycles-pp.d_alloc_parallel.__lookup_slow.walk_component.path_lookupat.filename_lookup 16.94 -3.9 13.02 perf-profile.calltrace.cycles-pp.__lookup_slow.walk_component.path_lookupat.filename_lookup.user_path_at_empty 9.53 -2.5 7.06 perf-profile.calltrace.cycles-pp.open64 9.44 -2.4 7.00 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.open64 9.43 -2.4 7.00 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.open64 9.41 -2.4 6.98 perf-profile.calltrace.cycles-pp.__x64_sys_openat.do_syscall_64.entry_SYSCALL_64_after_hwframe.open64 9.40 -2.4 6.97 perf-profile.calltrace.cycles-pp.do_sys_openat2.__x64_sys_openat.do_syscall_64.entry_SYSCALL_64_after_hwframe.open64 8.87 ± 2% -2.3 6.60 perf-profile.calltrace.cycles-pp.do_filp_open.do_sys_openat2.__x64_sys_openat.do_syscall_64.entry_SYSCALL_64_after_hwframe 8.84 ± 2% -2.3 6.58 perf-profile.calltrace.cycles-pp.path_openat.do_filp_open.do_sys_openat2.__x64_sys_openat.do_syscall_64 7.92 -2.2 5.74 perf-profile.calltrace.cycles-pp.__xstat64 7.84 -2.2 5.69 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__xstat64 7.83 -2.2 5.68 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__xstat64 7.80 -2.1 5.66 perf-profile.calltrace.cycles-pp.__do_sys_newstat.do_syscall_64.entry_SYSCALL_64_after_hwframe.__xstat64 7.48 -2.0 5.44 perf-profile.calltrace.cycles-pp.vfs_statx.__do_sys_newstat.do_syscall_64.entry_SYSCALL_64_after_hwframe.__xstat64 6.70 -1.8 4.85 perf-profile.calltrace.cycles-pp.filename_lookup.vfs_statx.__do_sys_newstat.do_syscall_64.entry_SYSCALL_64_after_hwframe 6.67 -1.8 4.83 perf-profile.calltrace.cycles-pp.path_lookupat.filename_lookup.vfs_statx.__do_sys_newstat.do_syscall_64 6.94 ± 2% -1.8 5.12 perf-profile.calltrace.cycles-pp.link_path_walk.path_lookupat.filename_lookup.user_path_at_empty.user_statfs 7.35 ± 2% -1.6 5.71 perf-profile.calltrace.cycles-pp._raw_spin_lock.lockref_get_not_dead.__legitimize_path.try_to_unlazy.link_path_walk 6.08 -1.4 4.65 perf-profile.calltrace.cycles-pp.lockref_get_not_dead.__legitimize_path.try_to_unlazy.link_path_walk.path_lookupat 6.13 -1.4 4.72 perf-profile.calltrace.cycles-pp.__legitimize_path.try_to_unlazy.link_path_walk.path_lookupat.filename_lookup 3.38 -1.0 2.38 perf-profile.calltrace.cycles-pp.link_path_walk.path_lookupat.filename_lookup.vfs_statx.__do_sys_newstat 1.76 ± 4% -0.9 0.84 ± 3% perf-profile.calltrace.cycles-pp.__legitimize_path.try_to_unlazy.complete_walk.path_lookupat.filename_lookup 4.11 -0.9 3.23 perf-profile.calltrace.cycles-pp.try_to_unlazy.link_path_walk.path_lookupat.filename_lookup.user_path_at_empty 3.34 ± 2% -0.8 2.50 perf-profile.calltrace.cycles-pp.link_path_walk.path_openat.do_filp_open.do_sys_openat2.__x64_sys_openat 2.28 ± 5% -0.7 1.54 ± 6% perf-profile.calltrace.cycles-pp.syscall 2.20 ± 5% -0.7 1.49 ± 6% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.syscall 2.19 ± 5% -0.7 1.48 ± 6% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.syscall 2.16 ± 5% -0.7 1.46 ± 6% perf-profile.calltrace.cycles-pp.__do_sys_ustat.do_syscall_64.entry_SYSCALL_64_after_hwframe.syscall 1.67 ± 3% -0.7 0.99 ± 2% perf-profile.calltrace.cycles-pp.__close 1.59 ± 3% -0.7 0.93 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__close 1.58 ± 3% -0.7 0.93 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__close 1.55 ± 3% -0.6 0.91 perf-profile.calltrace.cycles-pp.__x64_sys_close.do_syscall_64.entry_SYSCALL_64_after_hwframe.__close 2.03 ± 4% -0.6 1.45 ± 3% perf-profile.calltrace.cycles-pp.do_open.path_openat.do_filp_open.do_sys_openat2.__x64_sys_openat 0.92 ± 24% -0.6 0.35 ± 77% perf-profile.calltrace.cycles-pp.kernfs_iop_permission.inode_permission.link_path_walk.path_lookupat.filename_lookup 1.29 ± 3% -0.6 0.73 ± 3% perf-profile.calltrace.cycles-pp.__fput.__x64_sys_close.do_syscall_64.entry_SYSCALL_64_after_hwframe.__close 2.55 ± 2% -0.6 1.99 perf-profile.calltrace.cycles-pp.terminate_walk.path_openat.do_filp_open.do_sys_openat2.__x64_sys_openat 2.54 ± 2% -0.6 1.98 perf-profile.calltrace.cycles-pp.dput.terminate_walk.path_openat.do_filp_open.do_sys_openat2 1.18 ± 3% -0.5 0.63 ± 5% perf-profile.calltrace.cycles-pp.__d_lookup_rcu.lookup_fast.walk_component.path_lookupat.filename_lookup 1.58 ± 6% -0.5 1.04 ± 3% perf-profile.calltrace.cycles-pp.statfs_by_dentry.user_statfs.__do_sys_statfs.do_syscall_64.entry_SYSCALL_64_after_hwframe 2.04 ± 2% -0.5 1.51 ± 2% perf-profile.calltrace.cycles-pp.try_to_unlazy.link_path_walk.path_lookupat.filename_lookup.vfs_statx 1.43 ± 8% -0.5 0.90 ± 5% perf-profile.calltrace.cycles-pp.inode_permission.link_path_walk.path_lookupat.filename_lookup.user_path_at_empty 2.19 -0.5 1.68 ± 2% perf-profile.calltrace.cycles-pp.terminate_walk.path_lookupat.filename_lookup.vfs_statx.__do_sys_newstat 2.18 -0.5 1.68 ± 2% perf-profile.calltrace.cycles-pp.dput.terminate_walk.path_lookupat.filename_lookup.vfs_statx 1.45 ± 5% -0.5 0.99 ± 2% perf-profile.calltrace.cycles-pp.do_dentry_open.do_open.path_openat.do_filp_open.do_sys_openat2 2.02 ± 2% -0.4 1.58 perf-profile.calltrace.cycles-pp.lockref_get_not_dead.__legitimize_path.try_to_unlazy.link_path_walk.path_openat 2.04 ± 2% -0.4 1.61 ± 2% perf-profile.calltrace.cycles-pp.__legitimize_path.try_to_unlazy.link_path_walk.path_openat.do_filp_open 2.05 ± 2% -0.4 1.62 ± 2% perf-profile.calltrace.cycles-pp.try_to_unlazy.link_path_walk.path_openat.do_filp_open.do_sys_openat2 1.24 ± 5% -0.4 0.82 ± 6% perf-profile.calltrace.cycles-pp.user_get_super.__do_sys_ustat.do_syscall_64.entry_SYSCALL_64_after_hwframe.syscall 0.73 ± 5% -0.4 0.33 ± 77% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.fstatfs64 0.88 ± 7% -0.4 0.52 ± 38% perf-profile.calltrace.cycles-pp.shmem_statfs.statfs_by_dentry.user_statfs.__do_sys_statfs.do_syscall_64 1.21 ± 3% -0.4 0.86 ± 3% perf-profile.calltrace.cycles-pp.complete_walk.path_lookupat.filename_lookup.user_path_at_empty.user_statfs 1.20 ± 3% -0.4 0.85 ± 3% perf-profile.calltrace.cycles-pp.try_to_unlazy.complete_walk.path_lookupat.filename_lookup.user_path_at_empty 0.90 ± 6% -0.3 0.62 ± 7% perf-profile.calltrace.cycles-pp.fstatfs64 0.97 ± 6% -0.3 0.70 ± 4% perf-profile.calltrace.cycles-pp.walk_component.link_path_walk.path_lookupat.filename_lookup.user_path_at_empty 0.83 ± 4% -0.3 0.56 ± 5% perf-profile.calltrace.cycles-pp.getname_flags.user_path_at_empty.user_statfs.__do_sys_statfs.do_syscall_64 0.96 ± 6% -0.3 0.70 ± 4% perf-profile.calltrace.cycles-pp.lookup_fast.walk_component.link_path_walk.path_lookupat.filename_lookup 0.88 ± 3% -0.2 0.66 ± 3% perf-profile.calltrace.cycles-pp.lockref_get_not_dead.__legitimize_path.try_to_unlazy.complete_walk.path_lookupat 0.63 ± 8% +0.3 0.89 ± 3% perf-profile.calltrace.cycles-pp.down_read.walk_component.path_lookupat.filename_lookup.user_path_at_empty 0.50 ± 38% +0.3 0.84 ± 6% perf-profile.calltrace.cycles-pp.__legitimize_mnt.__legitimize_path.try_to_unlazy.lookup_fast.walk_component 0.00 +0.7 0.68 ± 11% perf-profile.calltrace.cycles-pp._raw_spin_lock.__dentry_kill.dput.d_alloc_parallel.__lookup_slow 0.00 +0.7 0.73 ± 10% perf-profile.calltrace.cycles-pp.__dentry_kill.dput.d_alloc_parallel.__lookup_slow.walk_component 0.00 +1.2 1.25 ± 4% perf-profile.calltrace.cycles-pp.lockref_put_return.dput.terminate_walk.path_lookupat.filename_lookup 31.36 +1.7 33.06 perf-profile.calltrace.cycles-pp.walk_component.path_lookupat.filename_lookup.user_path_at_empty.user_statfs 0.00 +1.7 1.74 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.dput.terminate_walk.path_openat 0.00 +1.8 1.80 perf-profile.calltrace.cycles-pp._raw_spin_lock.dput.terminate_walk.path_openat.do_filp_open 5.64 ± 2% +2.7 8.30 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.d_alloc.d_alloc_parallel.__lookup_slow 7.18 ± 2% +2.7 9.86 perf-profile.calltrace.cycles-pp.step_into.path_lookupat.filename_lookup.user_path_at_empty.user_statfs 6.84 +2.8 9.60 perf-profile.calltrace.cycles-pp.d_alloc.d_alloc_parallel.__lookup_slow.walk_component.path_lookupat 6.30 ± 2% +2.8 9.09 perf-profile.calltrace.cycles-pp._raw_spin_lock.d_alloc.d_alloc_parallel.__lookup_slow.walk_component 6.65 ± 2% +2.8 9.48 perf-profile.calltrace.cycles-pp.dput.step_into.path_lookupat.filename_lookup.user_path_at_empty 17.42 ± 2% +4.3 21.68 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.lockref_get_not_dead.__legitimize_path.try_to_unlazy 16.32 +5.4 21.68 perf-profile.calltrace.cycles-pp.dput.terminate_walk.path_lookupat.filename_lookup.user_path_at_empty 16.37 +5.4 21.73 perf-profile.calltrace.cycles-pp.terminate_walk.path_lookupat.filename_lookup.user_path_at_empty.user_statfs 13.30 +5.4 18.71 perf-profile.calltrace.cycles-pp.lookup_fast.walk_component.path_lookupat.filename_lookup.user_path_at_empty 11.21 ± 2% +5.8 17.01 perf-profile.calltrace.cycles-pp.lockref_get_not_dead.__legitimize_path.try_to_unlazy.lookup_fast.walk_component 10.63 ± 2% +5.9 16.54 perf-profile.calltrace.cycles-pp._raw_spin_lock.lockref_get_not_dead.__legitimize_path.try_to_unlazy.lookup_fast 11.77 ± 2% +6.1 17.85 perf-profile.calltrace.cycles-pp.__legitimize_path.try_to_unlazy.lookup_fast.walk_component.path_lookupat 11.79 ± 2% +6.1 17.87 perf-profile.calltrace.cycles-pp.try_to_unlazy.lookup_fast.walk_component.path_lookupat.filename_lookup 68.75 +6.1 74.86 perf-profile.calltrace.cycles-pp.__statfs 68.47 +6.2 74.64 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__statfs 68.42 +6.2 74.60 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__statfs 68.29 +6.2 74.52 perf-profile.calltrace.cycles-pp.__do_sys_statfs.do_syscall_64.entry_SYSCALL_64_after_hwframe.__statfs 68.05 +6.3 74.36 perf-profile.calltrace.cycles-pp.user_statfs.__do_sys_statfs.do_syscall_64.entry_SYSCALL_64_after_hwframe.__statfs 65.70 +7.1 72.79 perf-profile.calltrace.cycles-pp.user_path_at_empty.user_statfs.__do_sys_statfs.do_syscall_64.entry_SYSCALL_64_after_hwframe 63.65 +7.3 70.97 perf-profile.calltrace.cycles-pp.filename_lookup.user_path_at_empty.user_statfs.__do_sys_statfs.do_syscall_64 63.48 +7.4 70.85 perf-profile.calltrace.cycles-pp.path_lookupat.filename_lookup.user_path_at_empty.user_statfs.__do_sys_statfs 0.00 +7.4 7.42 ± 2% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.__dentry_kill.dput.step_into 0.00 +8.6 8.58 ± 2% perf-profile.calltrace.cycles-pp._raw_spin_lock.__dentry_kill.dput.step_into.path_lookupat 0.13 ±173% +9.2 9.29 perf-profile.calltrace.cycles-pp.__dentry_kill.dput.step_into.path_lookupat.filename_lookup 0.00 +21.7 21.66 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.dput.terminate_walk.path_lookupat 0.00 +22.0 21.96 perf-profile.calltrace.cycles-pp._raw_spin_lock.dput.terminate_walk.path_lookupat.filename_lookup 29.04 -29.0 0.00 perf-profile.children.cycles-pp.fast_dput 8.31 -8.3 0.00 perf-profile.children.cycles-pp.lock_for_kill 16.74 -4.2 12.57 perf-profile.children.cycles-pp.d_alloc_parallel 16.96 -3.9 13.05 perf-profile.children.cycles-pp.__lookup_slow 13.80 -3.7 10.14 perf-profile.children.cycles-pp.link_path_walk 9.55 -2.5 7.08 perf-profile.children.cycles-pp.open64 9.57 -2.4 7.16 perf-profile.children.cycles-pp.__x64_sys_openat 9.56 -2.4 7.15 perf-profile.children.cycles-pp.do_sys_openat2 9.05 ± 2% -2.3 6.78 perf-profile.children.cycles-pp.do_filp_open 9.02 ± 2% -2.3 6.77 perf-profile.children.cycles-pp.path_openat 7.94 -2.2 5.76 perf-profile.children.cycles-pp.__xstat64 7.84 -2.1 5.71 perf-profile.children.cycles-pp.__do_sys_newstat 7.52 -2.0 5.49 perf-profile.children.cycles-pp.vfs_statx 38.36 -1.2 37.11 perf-profile.children.cycles-pp.dput 2.90 ± 9% -1.0 1.86 ± 4% perf-profile.children.cycles-pp.inode_permission 2.71 ± 6% -0.9 1.81 ± 4% perf-profile.children.cycles-pp.statfs_by_dentry 2.31 ± 5% -0.8 1.56 ± 6% perf-profile.children.cycles-pp.syscall 2.16 ± 5% -0.7 1.46 ± 6% perf-profile.children.cycles-pp.__do_sys_ustat 1.69 ± 3% -0.7 1.02 ± 2% perf-profile.children.cycles-pp.__close 1.80 ± 8% -0.7 1.14 ± 5% perf-profile.children.cycles-pp.kernfs_iop_permission 1.56 ± 3% -0.6 0.92 perf-profile.children.cycles-pp.__x64_sys_close 2.20 ± 4% -0.6 1.60 ± 3% perf-profile.children.cycles-pp.complete_walk 1.61 ± 4% -0.6 1.02 ± 4% perf-profile.children.cycles-pp.__d_lookup_rcu 2.04 ± 4% -0.6 1.46 ± 2% perf-profile.children.cycles-pp.do_open 1.83 ± 7% -0.6 1.26 ± 4% perf-profile.children.cycles-pp.__percpu_counter_sum 2.57 ± 3% -0.6 2.00 ± 2% perf-profile.children.cycles-pp.lockref_put_return 1.29 ± 3% -0.6 0.74 ± 3% perf-profile.children.cycles-pp.__fput 1.55 ± 6% -0.5 1.05 ± 6% perf-profile.children.cycles-pp.shmem_statfs 1.42 -0.5 0.95 ± 3% perf-profile.children.cycles-pp.lockref_get 1.46 ± 5% -0.5 1.00 ± 2% perf-profile.children.cycles-pp.do_dentry_open 1.24 ± 5% -0.4 0.82 ± 6% perf-profile.children.cycles-pp.user_get_super 0.48 ± 5% -0.4 0.10 ± 18% perf-profile.children.cycles-pp._raw_spin_trylock 1.20 ± 4% -0.4 0.83 ± 3% perf-profile.children.cycles-pp.getname_flags 2.50 ± 4% -0.4 2.14 perf-profile.children.cycles-pp.down_read 0.61 ± 4% -0.3 0.27 ± 4% perf-profile.children.cycles-pp.dcache_dir_close 1.11 ± 10% -0.3 0.77 ± 11% perf-profile.children.cycles-pp.up_read 0.96 ± 6% -0.3 0.66 ± 7% perf-profile.children.cycles-pp.fstatfs64 0.80 ± 2% -0.3 0.52 ± 3% perf-profile.children.cycles-pp.__traverse_mounts 0.60 ± 15% -0.2 0.37 ± 9% perf-profile.children.cycles-pp.kernfs_dop_revalidate 0.76 ± 4% -0.2 0.53 ± 4% perf-profile.children.cycles-pp.strncpy_from_user 1.04 ± 3% -0.2 0.81 ± 3% perf-profile.children.cycles-pp.try_to_unlazy_next 0.84 ± 2% -0.2 0.63 ± 3% perf-profile.children.cycles-pp.path_put 0.56 ± 4% -0.2 0.36 ± 7% perf-profile.children.cycles-pp.kmem_cache_free 0.66 ± 5% -0.2 0.46 ± 6% perf-profile.children.cycles-pp.__do_sys_fstatfs 0.59 ± 7% -0.2 0.40 ± 9% perf-profile.children.cycles-pp.__d_lookup 0.61 ± 8% -0.2 0.43 ± 2% perf-profile.children.cycles-pp.alloc_empty_file 0.58 ± 15% -0.2 0.40 ± 11% perf-profile.children.cycles-pp.ext4_statfs 0.54 ± 8% -0.2 0.37 ± 5% perf-profile.children.cycles-pp.dcache_dir_open 0.42 ± 6% -0.2 0.25 ± 7% perf-profile.children.cycles-pp.path_init 0.54 ± 8% -0.2 0.37 ± 5% perf-profile.children.cycles-pp.d_alloc_cursor 0.57 ± 6% -0.2 0.40 ± 6% perf-profile.children.cycles-pp.fd_statfs 0.34 ± 6% -0.2 0.19 ± 8% perf-profile.children.cycles-pp.nd_jump_root 0.48 ± 6% -0.1 0.33 ± 8% perf-profile.children.cycles-pp._find_next_or_bit 0.46 ± 6% -0.1 0.32 ± 4% perf-profile.children.cycles-pp.kmem_cache_alloc 0.46 ± 8% -0.1 0.33 ± 2% perf-profile.children.cycles-pp.init_file 0.34 ± 6% -0.1 0.21 ± 6% perf-profile.children.cycles-pp.super_lock 0.45 ± 7% -0.1 0.32 ± 2% perf-profile.children.cycles-pp.security_file_alloc 0.63 ± 6% -0.1 0.51 ± 15% perf-profile.children.cycles-pp.rcu_do_batch 0.39 ± 6% -0.1 0.27 ± 3% perf-profile.children.cycles-pp.__check_object_size 0.42 ± 7% -0.1 0.29 ± 8% perf-profile.children.cycles-pp.entry_SYSCALL_64 0.64 ± 5% -0.1 0.52 ± 14% perf-profile.children.cycles-pp.rcu_core 0.40 ± 7% -0.1 0.29 ± 3% perf-profile.children.cycles-pp.apparmor_file_alloc_security 0.31 ± 7% -0.1 0.21 ± 7% perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack 0.29 ± 7% -0.1 0.20 ± 6% perf-profile.children.cycles-pp.open_last_lookups 0.20 ± 9% -0.1 0.11 ± 9% perf-profile.children.cycles-pp.set_root 0.23 ± 12% -0.1 0.14 ± 6% perf-profile.children.cycles-pp.security_file_free 0.23 ± 13% -0.1 0.14 ± 5% perf-profile.children.cycles-pp.apparmor_file_free_security 0.24 ± 6% -0.1 0.15 ± 7% perf-profile.children.cycles-pp.ioctl 0.20 ± 4% -0.1 0.12 ± 8% perf-profile.children.cycles-pp.simple_statfs 0.19 ± 9% -0.1 0.11 ± 14% perf-profile.children.cycles-pp.generic_permission 0.25 ± 5% -0.1 0.17 ± 5% perf-profile.children.cycles-pp._copy_to_user 0.38 ± 3% -0.1 0.30 ± 6% perf-profile.children.cycles-pp._raw_spin_lock_irqsave 0.16 ± 11% -0.1 0.09 ± 19% perf-profile.children.cycles-pp.vfs_statfs 0.22 ± 8% -0.1 0.16 ± 13% perf-profile.children.cycles-pp.__cond_resched 0.19 ± 6% -0.1 0.12 ± 8% perf-profile.children.cycles-pp.do_statfs_native 0.13 ± 14% -0.1 0.07 ± 16% perf-profile.children.cycles-pp.apparmor_file_open 0.19 ± 8% -0.1 0.13 ± 3% perf-profile.children.cycles-pp.check_heap_object 0.14 ± 16% -0.1 0.08 ± 13% perf-profile.children.cycles-pp.security_file_open 0.23 ± 13% -0.1 0.18 ± 15% perf-profile.children.cycles-pp.drop_super 0.16 ± 3% -0.1 0.11 ± 11% perf-profile.children.cycles-pp.syscall_exit_to_user_mode 0.12 ± 16% -0.0 0.07 ± 15% perf-profile.children.cycles-pp.may_open 0.12 ± 14% -0.0 0.07 ± 9% perf-profile.children.cycles-pp.btrfs_statfs 0.11 ± 13% -0.0 0.07 ± 14% perf-profile.children.cycles-pp.__check_heap_object 0.10 ± 13% -0.0 0.06 ± 9% perf-profile.children.cycles-pp.__virt_addr_valid 0.14 ± 12% -0.0 0.10 ± 12% perf-profile.children.cycles-pp.filp_flush 0.07 ± 8% -0.0 0.03 ± 78% perf-profile.children.cycles-pp.kernfs_iop_getattr 0.13 ± 8% -0.0 0.09 ± 15% perf-profile.children.cycles-pp.security_inode_getattr 0.11 ± 8% -0.0 0.08 ± 8% perf-profile.children.cycles-pp.autofs_d_manage 0.12 ± 7% -0.0 0.08 ± 8% perf-profile.children.cycles-pp.common_perm_cond 0.07 ± 14% -0.0 0.04 ± 78% perf-profile.children.cycles-pp.syscall_enter_from_user_mode 0.10 ± 13% -0.0 0.07 ± 12% perf-profile.children.cycles-pp.dnotify_flush 0.08 ± 10% -0.0 0.05 ± 38% perf-profile.children.cycles-pp.cp_new_stat 0.08 ± 13% -0.0 0.05 ± 40% perf-profile.children.cycles-pp.fsnotify_grab_connector 0.09 ± 11% -0.0 0.06 ± 15% perf-profile.children.cycles-pp.fsnotify_find_mark 0.00 +0.1 0.08 ± 11% perf-profile.children.cycles-pp.__wake_up 0.01 ±173% +0.1 0.10 ± 15% perf-profile.children.cycles-pp.__d_lookup_unhash 0.07 ± 12% +0.1 0.16 ± 8% perf-profile.children.cycles-pp.__d_rehash 0.12 ± 10% +0.2 0.28 ± 8% perf-profile.children.cycles-pp.__call_rcu_common 0.01 ±173% +0.2 0.20 ± 12% perf-profile.children.cycles-pp.rcu_segcblist_enqueue 0.20 ± 8% +0.2 0.44 ± 6% perf-profile.children.cycles-pp.__d_add 0.21 ± 9% +0.2 0.45 ± 6% perf-profile.children.cycles-pp.simple_lookup 33.52 +1.1 34.65 perf-profile.children.cycles-pp.walk_component 8.19 ± 2% +2.3 10.50 perf-profile.children.cycles-pp.step_into 6.86 +2.8 9.64 perf-profile.children.cycles-pp.d_alloc 22.68 +3.0 25.69 perf-profile.children.cycles-pp.lockref_get_not_dead 23.18 +3.5 26.63 perf-profile.children.cycles-pp.__legitimize_path 22.23 +3.7 25.89 perf-profile.children.cycles-pp.try_to_unlazy 21.17 +4.3 25.49 perf-profile.children.cycles-pp.terminate_walk 15.50 +4.8 20.31 perf-profile.children.cycles-pp.lookup_fast 70.40 +5.5 75.87 perf-profile.children.cycles-pp.filename_lookup 70.20 +5.5 75.74 perf-profile.children.cycles-pp.path_lookupat 63.14 +5.7 68.82 perf-profile.children.cycles-pp._raw_spin_lock 68.88 +6.1 74.95 perf-profile.children.cycles-pp.__statfs 58.70 +6.1 64.80 perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath 68.30 +6.2 74.53 perf-profile.children.cycles-pp.__do_sys_statfs 68.06 +6.3 74.37 perf-profile.children.cycles-pp.user_statfs 65.72 +7.1 72.81 perf-profile.children.cycles-pp.user_path_at_empty 0.86 ± 6% +9.4 10.30 perf-profile.children.cycles-pp.__dentry_kill 2.62 ± 3% -1.0 1.64 ± 4% perf-profile.self.cycles-pp.lockref_get_not_dead 1.58 ± 4% -0.6 1.00 ± 4% perf-profile.self.cycles-pp.__d_lookup_rcu 2.53 ± 3% -0.6 1.98 ± 3% perf-profile.self.cycles-pp.lockref_put_return 4.43 ± 3% -0.4 4.00 ± 2% perf-profile.self.cycles-pp._raw_spin_lock 0.48 ± 5% -0.4 0.10 ± 18% perf-profile.self.cycles-pp._raw_spin_trylock 1.18 ± 9% -0.4 0.82 ± 5% perf-profile.self.cycles-pp.__percpu_counter_sum 0.96 ± 11% -0.3 0.61 ± 6% perf-profile.self.cycles-pp.inode_permission 2.43 ± 4% -0.3 2.09 perf-profile.self.cycles-pp.down_read 1.09 ± 10% -0.3 0.76 ± 11% perf-profile.self.cycles-pp.up_read 0.77 ± 3% -0.3 0.48 ± 5% perf-profile.self.cycles-pp.lockref_get 0.59 ± 6% -0.2 0.39 ± 7% perf-profile.self.cycles-pp.user_get_super 0.43 ± 4% -0.2 0.25 ± 8% perf-profile.self.cycles-pp.kmem_cache_free 0.40 ± 6% -0.1 0.25 ± 6% perf-profile.self.cycles-pp.do_dentry_open 0.37 ± 6% -0.1 0.26 ± 8% perf-profile.self.cycles-pp._find_next_or_bit 0.39 ± 7% -0.1 0.28 ± 3% perf-profile.self.cycles-pp.apparmor_file_alloc_security 0.37 ± 7% -0.1 0.27 ± 8% perf-profile.self.cycles-pp.strncpy_from_user 0.30 ± 6% -0.1 0.20 ± 7% perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack 0.28 ± 5% -0.1 0.18 ± 6% perf-profile.self.cycles-pp.shmem_statfs 0.22 ± 12% -0.1 0.14 ± 5% perf-profile.self.cycles-pp.apparmor_file_free_security 0.20 ± 3% -0.1 0.12 ± 8% perf-profile.self.cycles-pp.simple_statfs 0.25 ± 4% -0.1 0.17 ± 5% perf-profile.self.cycles-pp._copy_to_user 0.26 ± 6% -0.1 0.19 ± 4% perf-profile.self.cycles-pp.kmem_cache_alloc 0.20 ± 10% -0.1 0.12 ± 12% perf-profile.self.cycles-pp.statfs_by_dentry 0.24 ± 9% -0.1 0.17 ± 6% perf-profile.self.cycles-pp.link_path_walk 0.15 ± 12% -0.1 0.09 ± 20% perf-profile.self.cycles-pp.vfs_statfs 0.33 ± 5% -0.1 0.27 ± 6% perf-profile.self.cycles-pp._raw_spin_lock_irqsave 0.13 ± 14% -0.1 0.07 ± 16% perf-profile.self.cycles-pp.apparmor_file_open 0.19 ± 10% -0.1 0.13 ± 5% perf-profile.self.cycles-pp.filename_lookup 0.15 ± 11% -0.1 0.09 ± 15% perf-profile.self.cycles-pp.generic_permission 0.14 ± 7% -0.1 0.09 ± 13% perf-profile.self.cycles-pp.lookup_fast 0.18 ± 9% -0.1 0.13 ± 7% perf-profile.self.cycles-pp.step_into 0.18 ± 14% -0.1 0.13 ± 11% perf-profile.self.cycles-pp.__statfs 0.14 ± 9% -0.0 0.09 ± 13% perf-profile.self.cycles-pp.__cond_resched 0.11 ± 15% -0.0 0.06 ± 13% perf-profile.self.cycles-pp.__check_heap_object 0.16 ± 12% -0.0 0.12 ± 10% perf-profile.self.cycles-pp.generic_fillattr 0.11 ± 11% -0.0 0.07 ± 16% perf-profile.self.cycles-pp.getname_flags 0.11 ± 10% -0.0 0.07 ± 15% perf-profile.self.cycles-pp.do_syscall_64 0.11 ± 12% -0.0 0.07 ± 8% perf-profile.self.cycles-pp.__do_sys_statfs 0.09 ± 15% -0.0 0.06 ± 12% perf-profile.self.cycles-pp.__virt_addr_valid 0.10 ± 8% -0.0 0.06 ± 7% perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe 0.11 ± 10% -0.0 0.08 ± 9% perf-profile.self.cycles-pp.common_perm_cond 0.11 ± 11% -0.0 0.08 ± 14% perf-profile.self.cycles-pp.entry_SYSCALL_64 0.09 ± 13% -0.0 0.06 ± 15% perf-profile.self.cycles-pp.set_root 0.06 ± 15% +0.0 0.09 ± 11% perf-profile.self.cycles-pp.dput 0.01 ±173% +0.1 0.10 ± 15% perf-profile.self.cycles-pp.__d_lookup_unhash 0.07 ± 12% +0.1 0.16 ± 8% perf-profile.self.cycles-pp.__d_rehash 0.00 +0.2 0.20 ± 13% perf-profile.self.cycles-pp.rcu_segcblist_enqueue 0.08 ± 11% +0.3 0.38 ± 6% perf-profile.self.cycles-pp.__dentry_kill 0.57 ± 6% +0.9 1.51 ± 3% perf-profile.self.cycles-pp.d_alloc_parallel 58.18 +6.1 64.24 perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath 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
