Hello, kernel test robot noticed a 25.5% improvement of stress-ng.kill.ops_per_sec on: commit: dab8a2e9ddebfc8629b0b7f527206c91d52b160e ("[PATCH v4 1/2] ring-buffer: Introducing ring-buffer mapping functions") url: https://github.com/intel-lab-lkp/linux/commits/Vincent-Donnefort/ring-buffer-Introducing-ring-buffer-mapping-functions/20230613-163710 base: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git fb054096aea0576f0c0a61c598e5e9676443ee86 patch link: https://lore.kernel.org/all/20230613083513.3312612-2-vdonnefort@google.com/ patch subject: [PATCH v4 1/2] ring-buffer: Introducing ring-buffer mapping functions 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% disk: 1HDD testtime: 60s class: interrupt test: kill cpufreq_governor: performance Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests sudo bin/lkp install job.yaml # job file is attached in this email bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run sudo bin/lkp run generated-yaml-file # if come across any failure that blocks the test, # please remove ~/.lkp and /lkp dir to run from a clean state. ========================================================================================= class/compiler/cpufreq_governor/disk/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime: interrupt/gcc-12/performance/1HDD/x86_64-rhel-8.3/100%/debian-11.1-x86_64-20220510.cgz/lkp-icl-2sp8/kill/stress-ng/60s commit: fb054096ae ("Merge tag 'mm-hotfixes-stable-2023-06-12-12-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm") dab8a2e9dd ("ring-buffer: Introducing ring-buffer mapping functions") fb054096aea0576f dab8a2e9ddebfc8629b0b7f5272 ---------------- --------------------------- %stddev %change %stddev \ | \ 0.01 +100.0% 0.02 turbostat.IPC 318.00 ± 98% +475.1% 1828 ±117% vmstat.memory.buff 85186 +23.8% 105494 vmstat.system.cs 0.72 +0.1 0.78 ± 2% mpstat.cpu.all.irq% 0.02 ± 6% +0.0 0.03 ± 3% mpstat.cpu.all.soft% 0.47 +0.3 0.81 ± 10% mpstat.cpu.all.usr% 167.67 ± 10% -34.2% 110.33 ± 7% perf-c2c.DRAM.local 1709 ± 3% -78.2% 372.33 ± 5% perf-c2c.DRAM.remote 3027 ± 4% -20.6% 2402 ± 6% perf-c2c.HITM.local 540.00 ± 5% -67.7% 174.67 ± 12% perf-c2c.HITM.remote 293385 +10.9% 325265 meminfo.Active 474.67 ± 59% +308.4% 1938 ±111% meminfo.Active(file) 318.00 ± 98% +473.6% 1824 ±118% meminfo.Buffers 99203 ± 2% +22.1% 121162 ± 3% meminfo.Mapped 354897 +13.0% 401038 meminfo.Shmem 737.88 +6.0% 782.52 stress-ng.kill.kill_calls_per_sec 913328 +25.5% 1146265 stress-ng.kill.ops 15221 +25.5% 19103 stress-ng.kill.ops_per_sec 2741307 +24.9% 3422867 stress-ng.time.involuntary_context_switches 2719695 +25.1% 3402015 stress-ng.time.voluntary_context_switches 72923 +10.5% 80615 proc-vmstat.nr_active_anon 118.50 ± 59% +308.9% 484.50 ±111% proc-vmstat.nr_active_file 89727 +1.8% 91366 proc-vmstat.nr_anon_pages 772985 +1.6% 785072 proc-vmstat.nr_file_pages 105184 +5.4% 110891 proc-vmstat.nr_inactive_anon 24859 ± 3% +22.5% 30450 ± 2% proc-vmstat.nr_mapped 88505 +13.3% 100250 proc-vmstat.nr_shmem 72923 +10.5% 80615 proc-vmstat.nr_zone_active_anon 118.50 ± 59% +308.9% 484.50 ±111% proc-vmstat.nr_zone_active_file 105184 +5.4% 110891 proc-vmstat.nr_zone_inactive_anon 18521 ± 15% +45.3% 26903 ± 8% proc-vmstat.numa_hint_faults_local 519320 +3.3% 536424 proc-vmstat.numa_hit 453047 +3.8% 470130 ± 2% proc-vmstat.numa_local 559942 +2.6% 574521 proc-vmstat.pgalloc_normal 1730277 -10.7% 1544435 sched_debug.cfs_rq:/.min_vruntime.min 25977 ± 8% +82.0% 47289 ± 3% sched_debug.cfs_rq:/.min_vruntime.stddev 46.15 ± 41% +63.1% 75.28 ± 24% sched_debug.cfs_rq:/.removed.load_avg.avg 142.13 ± 18% +25.5% 178.42 ± 10% sched_debug.cfs_rq:/.removed.load_avg.stddev 15.30 ± 40% +73.1% 26.49 ± 19% sched_debug.cfs_rq:/.removed.runnable_avg.avg 51.68 ± 25% +34.2% 69.36 ± 7% sched_debug.cfs_rq:/.removed.runnable_avg.stddev 15.30 ± 40% +73.1% 26.49 ± 19% sched_debug.cfs_rq:/.removed.util_avg.avg 51.68 ± 25% +34.2% 69.36 ± 7% sched_debug.cfs_rq:/.removed.util_avg.stddev -163513 +101.1% -328771 sched_debug.cfs_rq:/.spread0.min 25962 ± 8% +82.2% 47315 ± 3% sched_debug.cfs_rq:/.spread0.stddev 185.25 ± 6% -30.6% 128.58 ± 46% sched_debug.cfs_rq:/.util_est_enqueued.min 91.74 ± 12% +27.1% 116.58 ± 17% sched_debug.cfs_rq:/.util_est_enqueued.stddev 47444 +21.0% 57414 sched_debug.cpu.nr_switches.avg 34565 ± 2% -56.3% 15121 ± 11% sched_debug.cpu.nr_switches.min 26970 ± 2% +64.1% 44271 ± 3% sched_debug.cpu.nr_switches.stddev 13.70 -2.0% 13.42 perf-stat.i.MPKI 1.579e+09 +18.3% 1.868e+09 perf-stat.i.branch-instructions 8703552 +7.4% 9347515 perf-stat.i.branch-misses 11.92 -8.9 2.97 ± 5% perf-stat.i.cache-miss-rate% 13454425 -72.4% 3712356 ± 3% perf-stat.i.cache-misses 1.116e+08 +19.3% 1.332e+08 perf-stat.i.cache-references 88572 +23.9% 109756 perf-stat.i.context-switches 27.02 -19.0% 21.88 perf-stat.i.cpi 15970 +309.6% 65417 ± 2% perf-stat.i.cycles-between-cache-misses 2.318e+09 +19.5% 2.77e+09 perf-stat.i.dTLB-loads 1.199e+09 +21.0% 1.452e+09 perf-stat.i.dTLB-stores 8.467e+09 +18.9% 1.006e+10 perf-stat.i.instructions 146.35 -63.4% 53.57 ± 14% perf-stat.i.metric.K/sec 81.18 +19.6% 97.05 perf-stat.i.metric.M/sec 86.90 -7.0 79.92 ± 2% perf-stat.i.node-load-miss-rate% 2738509 -77.0% 630505 ± 3% perf-stat.i.node-load-misses 407911 ± 5% -56.2% 178562 ± 14% perf-stat.i.node-loads 89.44 -36.9 52.51 perf-stat.i.node-store-miss-rate% 4392752 -92.0% 351197 ± 3% perf-stat.i.node-store-misses 0.53 -0.1 0.47 perf-stat.overall.branch-miss-rate% 12.05 -9.3 2.76 ± 2% perf-stat.overall.cache-miss-rate% 25.96 -16.1% 21.79 perf-stat.overall.cpi 16218 +264.0% 59031 ± 3% perf-stat.overall.cycles-between-cache-misses 0.00 ± 7% -0.0 0.00 ± 8% perf-stat.overall.dTLB-store-miss-rate% 0.04 +19.1% 0.05 perf-stat.overall.ipc 86.90 -9.4 77.51 ± 2% perf-stat.overall.node-load-miss-rate% 90.81 -48.4 42.45 ± 2% perf-stat.overall.node-store-miss-rate% 1.546e+09 +18.1% 1.826e+09 perf-stat.ps.branch-instructions 8207103 +5.4% 8650221 perf-stat.ps.branch-misses 13275967 -72.6% 3639102 ± 3% perf-stat.ps.cache-misses 1.102e+08 +19.8% 1.319e+08 perf-stat.ps.cache-references 87466 +24.2% 108660 perf-stat.ps.context-switches 2.275e+09 +19.5% 2.719e+09 perf-stat.ps.dTLB-loads 1.18e+09 +21.1% 1.43e+09 perf-stat.ps.dTLB-stores 8.294e+09 +18.7% 9.849e+09 perf-stat.ps.instructions 2703084 -77.1% 618728 ± 3% perf-stat.ps.node-load-misses 407596 ± 5% -55.8% 180316 ± 13% perf-stat.ps.node-loads 4340341 -92.0% 347078 ± 3% perf-stat.ps.node-store-misses 5.243e+11 +19.0% 6.239e+11 perf-stat.total.instructions 0.02 ± 19% +158.0% 0.06 ± 50% perf-sched.sch_delay.avg.ms.__cond_resched.__wait_for_common.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity 0.01 ± 39% +61.1% 0.02 ± 20% perf-sched.sch_delay.avg.ms.__x64_sys_pause.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown] 0.34 ±183% +373.4% 1.62 ± 73% perf-sched.sch_delay.avg.ms.io_schedule.bit_wait_io.__wait_on_bit.out_of_line_wait_on_bit 1.92 ± 8% +102.3% 3.88 ± 13% perf-sched.sch_delay.avg.ms.irq_thread.kthread.ret_from_fork 0.94 ±148% +253.3% 3.31 ± 76% perf-sched.sch_delay.avg.ms.schedule_timeout.ext4_lazyinit_thread.part.0.kthread 0.63 ±167% +440.9% 3.42 ± 59% perf-sched.sch_delay.avg.ms.schedule_timeout.io_schedule_timeout.__wait_for_common.submit_bio_wait 1.92 ± 9% +27.4% 2.44 ± 15% perf-sched.sch_delay.avg.ms.schedule_timeout.kcompactd.kthread.ret_from_fork 0.90 ± 6% -20.1% 0.72 ± 6% perf-sched.sch_delay.avg.ms.smpboot_thread_fn.kthread.ret_from_fork 2.90 ± 11% +220.7% 9.30 ± 18% perf-sched.sch_delay.max.ms.__cond_resched.__wait_for_common.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity 6.26 ± 30% +479.0% 36.23 ± 65% perf-sched.sch_delay.max.ms.__x64_sys_pause.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown] 0.68 ±183% +372.0% 3.23 ± 73% perf-sched.sch_delay.max.ms.io_schedule.bit_wait_io.__wait_on_bit.out_of_line_wait_on_bit 3.96 ± 14% +135.0% 9.32 ± 13% perf-sched.sch_delay.max.ms.irq_thread.kthread.ret_from_fork 0.94 ±148% +253.3% 3.31 ± 76% perf-sched.sch_delay.max.ms.schedule_timeout.ext4_lazyinit_thread.part.0.kthread 0.63 ±167% +440.9% 3.42 ± 59% perf-sched.sch_delay.max.ms.schedule_timeout.io_schedule_timeout.__wait_for_common.submit_bio_wait 4.02 ± 7% +89.6% 7.63 ± 12% perf-sched.sch_delay.max.ms.schedule_timeout.kcompactd.kthread.ret_from_fork 5.09 ± 13% +101.8% 10.27 ± 8% perf-sched.sch_delay.max.ms.smpboot_thread_fn.kthread.ret_from_fork 12.96 ± 7% +22.8% 15.91 ± 8% perf-sched.sch_delay.max.ms.wait_for_partner.fifo_open.do_dentry_open.do_open 5.38 ± 13% +89.3% 10.19 ± 12% perf-sched.sch_delay.max.ms.worker_thread.kthread.ret_from_fork 2.22 ± 2% -18.6% 1.80 ± 3% perf-sched.total_wait_and_delay.average.ms 462455 +23.1% 569289 perf-sched.total_wait_and_delay.count.ms 2.20 ± 2% -18.7% 1.79 ± 3% perf-sched.total_wait_time.average.ms 13.15 ± 7% -10.5% 11.77 ± 3% perf-sched.wait_and_delay.avg.ms.__cond_resched.__wait_for_common.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity 118.49 ± 34% -77.9% 26.13 ± 32% perf-sched.wait_and_delay.avg.ms.__cond_resched.generic_perform_write.__generic_file_write_iter.generic_file_write_iter.vfs_write 4.14 -20.8% 3.28 perf-sched.wait_and_delay.avg.ms.do_signal_stop.get_signal.arch_do_signal_or_restart.exit_to_user_mode_loop 0.02 ± 5% +46.7% 0.03 ± 11% 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 18.24 ±142% +977.7% 196.58 ±124% perf-sched.wait_and_delay.avg.ms.kjournald2.kthread.ret_from_fork 3.24 ±144% +244.9% 11.18 ± 53% perf-sched.wait_and_delay.avg.ms.schedule_timeout.ext4_lazyinit_thread.part.0.kthread 7.83 ± 58% +153.2% 19.83 ± 34% perf-sched.wait_and_delay.count.__cond_resched.__alloc_pages.__folio_alloc.vma_alloc_folio.shmem_alloc_folio 352.50 ± 8% -9.2% 320.00 perf-sched.wait_and_delay.count.__cond_resched.__wait_for_common.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity 25.50 ± 11% -28.8% 18.17 ± 20% perf-sched.wait_and_delay.count.__cond_resched.down_write_killable.exec_mmap.begin_new_exec.load_elf_binary 20.33 ± 16% +263.1% 73.83 ± 31% perf-sched.wait_and_delay.count.__cond_resched.generic_perform_write.__generic_file_write_iter.generic_file_write_iter.vfs_write 151847 +23.8% 187914 perf-sched.wait_and_delay.count.__x64_sys_pause.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown] 75617 +23.0% 93028 perf-sched.wait_and_delay.count.do_signal_stop.get_signal.arch_do_signal_or_restart.exit_to_user_mode_loop 230482 +23.1% 283813 perf-sched.wait_and_delay.count.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64 1246 ± 20% -55.5% 555.15 ± 32% perf-sched.wait_and_delay.max.ms.__cond_resched.generic_perform_write.__generic_file_write_iter.generic_file_write_iter.vfs_write 18.24 ±142% +977.7% 196.58 ±124% perf-sched.wait_and_delay.max.ms.kjournald2.kthread.ret_from_fork 3.24 ±144% +244.9% 11.18 ± 53% perf-sched.wait_and_delay.max.ms.schedule_timeout.ext4_lazyinit_thread.part.0.kthread 12.96 ± 7% +22.8% 15.91 ± 8% perf-sched.wait_and_delay.max.ms.wait_for_partner.fifo_open.do_dentry_open.do_open 13.12 ± 7% -10.8% 11.70 ± 4% perf-sched.wait_time.avg.ms.__cond_resched.__wait_for_common.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity 0.01 ± 29% +656.5% 0.09 ±172% perf-sched.wait_time.avg.ms.__cond_resched.dput.step_into.link_path_walk.part 0.01 ± 9% +5204.7% 0.38 ±152% perf-sched.wait_time.avg.ms.__cond_resched.dput.step_into.open_last_lookups.path_openat 118.49 ± 34% -77.9% 26.13 ± 32% perf-sched.wait_time.avg.ms.__cond_resched.generic_perform_write.__generic_file_write_iter.generic_file_write_iter.vfs_write 4.13 -20.9% 3.27 perf-sched.wait_time.avg.ms.do_signal_stop.get_signal.arch_do_signal_or_restart.exit_to_user_mode_loop 0.02 ± 3% +49.1% 0.03 ± 12% perf-sched.wait_time.avg.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64 0.01 ±186% +479.6% 0.05 ± 39% perf-sched.wait_time.avg.ms.io_schedule.bit_wait_io.__wait_on_bit.out_of_line_wait_on_bit 16.37 ±142% +1077.5% 192.72 ±127% perf-sched.wait_time.avg.ms.kjournald2.kthread.ret_from_fork 2.30 ±142% +241.5% 7.87 ± 43% perf-sched.wait_time.avg.ms.schedule_timeout.ext4_lazyinit_thread.part.0.kthread 0.03 ± 53% +3495.7% 0.97 ±200% perf-sched.wait_time.max.ms.__cond_resched.dput.step_into.link_path_walk.part 0.01 ± 40% +29892.9% 3.50 ±143% perf-sched.wait_time.max.ms.__cond_resched.dput.step_into.open_last_lookups.path_openat 1246 ± 20% -55.5% 555.15 ± 32% perf-sched.wait_time.max.ms.__cond_resched.generic_perform_write.__generic_file_write_iter.generic_file_write_iter.vfs_write 24.58 ± 13% +45.8% 35.84 ± 21% perf-sched.wait_time.max.ms.do_signal_stop.get_signal.arch_do_signal_or_restart.exit_to_user_mode_loop 0.02 ±186% +475.9% 0.10 ± 39% perf-sched.wait_time.max.ms.io_schedule.bit_wait_io.__wait_on_bit.out_of_line_wait_on_bit 16.37 ±142% +1077.5% 192.72 ±127% perf-sched.wait_time.max.ms.kjournald2.kthread.ret_from_fork 2.30 ±142% +241.5% 7.87 ± 43% perf-sched.wait_time.max.ms.schedule_timeout.ext4_lazyinit_thread.part.0.kthread 9.10 ± 2% -5.5 3.64 ± 2% perf-profile.calltrace.cycles-pp.aa_may_signal.apparmor_task_kill.security_task_kill.kill_something_info.__x64_sys_kill 94.25 -2.4 91.90 perf-profile.calltrace.cycles-pp.apparmor_task_kill.security_task_kill.kill_something_info.__x64_sys_kill.do_syscall_64 94.39 -2.0 92.42 perf-profile.calltrace.cycles-pp.security_task_kill.kill_something_info.__x64_sys_kill.do_syscall_64.entry_SYSCALL_64_after_hwframe 98.29 -1.0 97.34 perf-profile.calltrace.cycles-pp.kill_something_info.__x64_sys_kill.do_syscall_64.entry_SYSCALL_64_after_hwframe.kill 98.33 -0.9 97.40 perf-profile.calltrace.cycles-pp.__x64_sys_kill.do_syscall_64.entry_SYSCALL_64_after_hwframe.kill 98.46 -0.9 97.59 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.kill 98.46 -0.9 97.60 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.kill 98.49 -0.9 97.63 perf-profile.calltrace.cycles-pp.kill 0.66 +0.2 0.83 ± 2% perf-profile.calltrace.cycles-pp.apparmor_task_kill.security_task_kill.kill_pid_info.kill_something_info.__x64_sys_kill 0.67 +0.2 0.84 ± 2% perf-profile.calltrace.cycles-pp.security_task_kill.kill_pid_info.kill_something_info.__x64_sys_kill.do_syscall_64 0.72 +0.2 0.92 perf-profile.calltrace.cycles-pp.profile_signal_perm.aa_may_signal.apparmor_task_kill.security_task_kill.kill_something_info 0.77 +0.2 0.98 perf-profile.calltrace.cycles-pp.kill_pid_info.kill_something_info.__x64_sys_kill.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.56 ± 3% +0.3 0.81 ± 3% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.pause 0.56 ± 3% +0.3 0.82 ± 3% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.pause 0.57 ± 3% +0.3 0.83 ± 3% perf-profile.calltrace.cycles-pp.pause 0.00 +0.6 0.56 ± 3% perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt.apparmor_task_kill.security_task_kill.kill_something_info.__x64_sys_kill 0.08 ±223% +0.6 0.70 ± 4% perf-profile.calltrace.cycles-pp.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.pause 0.08 ±223% +0.6 0.70 ± 4% perf-profile.calltrace.cycles-pp.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.pause 0.00 +0.6 0.65 ± 3% perf-profile.calltrace.cycles-pp.do_filp_open.do_sys_openat2.__x64_sys_openat.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.6 0.65 ± 3% perf-profile.calltrace.cycles-pp.path_openat.do_filp_open.do_sys_openat2.__x64_sys_openat.do_syscall_64 2.44 ± 3% +0.6 3.09 ± 3% perf-profile.calltrace.cycles-pp.queued_read_lock_slowpath.kill_something_info.__x64_sys_kill.do_syscall_64.entry_SYSCALL_64_after_hwframe 2.43 ± 3% +0.7 3.09 ± 3% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath.queued_read_lock_slowpath.kill_something_info.__x64_sys_kill.do_syscall_64 0.00 +0.7 0.67 ± 4% perf-profile.calltrace.cycles-pp.get_signal.arch_do_signal_or_restart.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode 0.00 +0.7 0.68 ± 3% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.open64 0.00 +0.7 0.68 ± 3% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.open64 0.00 +0.7 0.68 ± 3% perf-profile.calltrace.cycles-pp.__x64_sys_openat.do_syscall_64.entry_SYSCALL_64_after_hwframe.open64 0.00 +0.7 0.68 ± 3% perf-profile.calltrace.cycles-pp.do_sys_openat2.__x64_sys_openat.do_syscall_64.entry_SYSCALL_64_after_hwframe.open64 0.00 +0.7 0.68 ± 3% perf-profile.calltrace.cycles-pp.open64 0.00 +0.7 0.69 ± 4% perf-profile.calltrace.cycles-pp.arch_do_signal_or_restart.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64 0.00 +0.7 0.70 ± 5% perf-profile.calltrace.cycles-pp.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe 38.83 +3.0 41.81 perf-profile.calltrace.cycles-pp.aa_get_task_label.apparmor_task_kill.security_task_kill.kill_something_info.__x64_sys_kill 9.20 ± 2% -5.5 3.72 ± 2% perf-profile.children.cycles-pp.aa_may_signal 94.97 -1.8 93.15 perf-profile.children.cycles-pp.apparmor_task_kill 95.08 -1.8 93.28 perf-profile.children.cycles-pp.security_task_kill 98.32 -0.9 97.38 perf-profile.children.cycles-pp.kill_something_info 98.33 -0.9 97.40 perf-profile.children.cycles-pp.__x64_sys_kill 98.50 -0.9 97.64 perf-profile.children.cycles-pp.kill 99.90 -0.1 99.81 perf-profile.children.cycles-pp.do_syscall_64 99.91 -0.1 99.82 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 0.07 -0.0 0.06 ± 6% perf-profile.children.cycles-pp.exit_notify 0.06 ± 9% +0.0 0.07 perf-profile.children.cycles-pp.audit_signal_info 0.08 ± 5% +0.0 0.10 perf-profile.children.cycles-pp.ksys_read 0.06 ± 7% +0.0 0.08 ± 4% perf-profile.children.cycles-pp.audit_signal_info_syscall 0.09 ± 5% +0.0 0.11 ± 4% perf-profile.children.cycles-pp.security_file_open 0.09 ± 5% +0.0 0.11 ± 4% perf-profile.children.cycles-pp.apparmor_file_open 0.05 +0.0 0.08 ± 6% perf-profile.children.cycles-pp.apparmor_file_alloc_security 0.05 +0.0 0.08 perf-profile.children.cycles-pp.security_file_alloc 0.06 ± 7% +0.0 0.10 ± 4% perf-profile.children.cycles-pp.__x64_sys_pause 0.06 ± 7% +0.0 0.10 ± 5% perf-profile.children.cycles-pp.complete_signal 0.11 ± 4% +0.0 0.14 perf-profile.children.cycles-pp.__task_pid_nr_ns 0.06 +0.0 0.10 ± 8% perf-profile.children.cycles-pp.__d_lookup 0.06 ± 6% +0.0 0.10 ± 8% perf-profile.children.cycles-pp.open_last_lookups 0.07 +0.0 0.11 ± 4% perf-profile.children.cycles-pp.alloc_empty_file 0.05 ± 7% +0.0 0.09 ± 4% perf-profile.children.cycles-pp.__fput 0.07 ± 7% +0.0 0.10 ± 4% perf-profile.children.cycles-pp.__alloc_file 0.07 ± 5% +0.0 0.11 ± 5% perf-profile.children.cycles-pp.try_to_wake_up 0.02 ± 99% +0.0 0.06 ± 7% perf-profile.children.cycles-pp._raw_spin_lock_irqsave 0.07 +0.0 0.11 ± 3% perf-profile.children.cycles-pp.task_work_run 0.13 ± 5% +0.0 0.17 ± 2% perf-profile.children.cycles-pp.__kill_pgrp_info 0.09 ± 5% +0.0 0.14 ± 4% perf-profile.children.cycles-pp.do_send_sig_info 0.09 ± 4% +0.1 0.14 ± 2% perf-profile.children.cycles-pp.__send_signal_locked 0.17 ± 2% +0.1 0.22 ± 5% perf-profile.children.cycles-pp.do_dentry_open 0.00 +0.1 0.05 ± 7% perf-profile.children.cycles-pp.perf_mux_hrtimer_handler 0.09 +0.1 0.14 ± 6% perf-profile.children.cycles-pp.lookup_fast 0.00 +0.1 0.06 ± 9% perf-profile.children.cycles-pp.lockref_get 0.00 +0.1 0.06 ± 9% perf-profile.children.cycles-pp.lockref_put_or_lock 0.00 +0.1 0.06 ± 9% perf-profile.children.cycles-pp.ttwu_do_activate 0.08 ± 4% +0.1 0.14 ± 5% perf-profile.children.cycles-pp.inode_permission 0.08 ± 4% +0.1 0.14 ± 5% perf-profile.children.cycles-pp.proc_sys_permission 0.07 +0.1 0.13 ± 5% perf-profile.children.cycles-pp.switch_mm_irqs_off 0.07 ± 6% +0.1 0.13 ± 5% perf-profile.children.cycles-pp._raw_spin_lock_irq 0.41 +0.1 0.47 perf-profile.children.cycles-pp.check_kill_permission 0.09 +0.1 0.15 ± 2% perf-profile.children.cycles-pp.__close 0.00 +0.1 0.06 ± 6% perf-profile.children.cycles-pp.security_file_free 0.00 +0.1 0.06 ± 6% perf-profile.children.cycles-pp.apparmor_file_free_security 0.00 +0.1 0.06 ± 6% perf-profile.children.cycles-pp.walk_component 0.18 ± 2% +0.1 0.24 ± 4% perf-profile.children.cycles-pp.do_open 0.00 +0.1 0.07 ± 19% perf-profile.children.cycles-pp.shmem_write_begin 0.20 +0.1 0.27 ± 4% perf-profile.children.cycles-pp.__hrtimer_run_queues 0.22 ± 8% +0.1 0.29 ± 6% perf-profile.children.cycles-pp.do_signal_stop 0.00 +0.1 0.07 ± 18% perf-profile.children.cycles-pp.shmem_get_folio_gfp 0.00 +0.1 0.08 ± 6% perf-profile.children.cycles-pp.dput 0.11 ± 3% +0.1 0.19 ± 3% perf-profile.children.cycles-pp.link_path_walk 0.25 +0.1 0.32 ± 8% perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt 0.24 +0.1 0.32 ± 8% perf-profile.children.cycles-pp.hrtimer_interrupt 0.28 +0.1 0.38 ± 7% perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt 0.20 ± 2% +0.1 0.31 ± 3% perf-profile.children.cycles-pp.__schedule 0.20 ± 4% +0.1 0.31 ± 3% perf-profile.children.cycles-pp.schedule 0.00 +0.1 0.13 ± 17% perf-profile.children.cycles-pp.generic_perform_write 0.00 +0.1 0.13 ± 18% perf-profile.children.cycles-pp.__generic_file_write_iter 0.00 +0.1 0.14 ± 17% perf-profile.children.cycles-pp.generic_file_write_iter 0.00 +0.2 0.16 ± 18% perf-profile.children.cycles-pp.vfs_write 0.31 ± 3% +0.2 0.48 ± 3% perf-profile.children.cycles-pp._raw_spin_lock 0.00 +0.2 0.20 ± 20% perf-profile.children.cycles-pp.ksys_write 0.00 +0.2 0.20 ± 19% perf-profile.children.cycles-pp.__libc_write 0.46 ± 3% +0.2 0.67 ± 4% perf-profile.children.cycles-pp.get_signal 0.74 +0.2 0.95 perf-profile.children.cycles-pp.profile_signal_perm 0.00 +0.2 0.21 ± 19% perf-profile.children.cycles-pp.record__pushfn 0.02 ± 99% +0.2 0.24 ± 19% perf-profile.children.cycles-pp.__libc_start_main 0.02 ± 99% +0.2 0.24 ± 19% perf-profile.children.cycles-pp.main 0.02 ± 99% +0.2 0.24 ± 19% perf-profile.children.cycles-pp.run_builtin 0.00 +0.2 0.21 ± 20% perf-profile.children.cycles-pp.writen 0.00 +0.2 0.21 ± 20% perf-profile.children.cycles-pp.perf_mmap__push 0.77 +0.2 0.98 perf-profile.children.cycles-pp.kill_pid_info 0.00 +0.2 0.22 ± 20% perf-profile.children.cycles-pp.record__mmap_read_evlist 0.01 ±223% +0.2 0.23 ± 20% perf-profile.children.cycles-pp.cmd_record 0.01 ±223% +0.2 0.23 ± 20% perf-profile.children.cycles-pp.__cmd_record 0.50 ± 2% +0.2 0.72 ± 4% perf-profile.children.cycles-pp.arch_do_signal_or_restart 0.43 +0.2 0.66 ± 3% perf-profile.children.cycles-pp.path_openat 0.44 +0.2 0.66 ± 3% perf-profile.children.cycles-pp.do_filp_open 0.45 +0.2 0.69 ± 3% perf-profile.children.cycles-pp.open64 0.46 +0.2 0.70 ± 3% perf-profile.children.cycles-pp.__x64_sys_openat 0.46 +0.2 0.70 ± 3% perf-profile.children.cycles-pp.do_sys_openat2 0.58 ± 3% +0.3 0.83 ± 3% perf-profile.children.cycles-pp.pause 0.67 ± 2% +0.3 1.00 ± 3% perf-profile.children.cycles-pp.exit_to_user_mode_loop 0.70 ± 2% +0.3 1.03 ± 3% perf-profile.children.cycles-pp.syscall_exit_to_user_mode 0.70 ± 2% +0.3 1.03 ± 3% perf-profile.children.cycles-pp.exit_to_user_mode_prepare 2.74 ± 3% +0.7 3.49 ± 3% perf-profile.children.cycles-pp.queued_read_lock_slowpath 0.32 +0.8 1.13 ± 3% perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt 2.98 ± 3% +0.8 3.82 ± 3% perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath 39.13 +3.5 42.64 perf-profile.children.cycles-pp.aa_get_task_label 8.44 ± 2% -5.7 2.78 ± 2% perf-profile.self.cycles-pp.aa_may_signal 0.18 ± 2% -0.0 0.17 ± 2% perf-profile.self.cycles-pp.apparmor_capable 0.10 ± 4% +0.0 0.12 ± 3% perf-profile.self.cycles-pp.security_task_kill 0.05 ± 7% +0.0 0.07 perf-profile.self.cycles-pp.audit_signal_info_syscall 0.09 ± 7% +0.0 0.11 ± 6% perf-profile.self.cycles-pp.apparmor_file_open 0.09 ± 5% +0.0 0.11 ± 4% perf-profile.self.cycles-pp.__task_pid_nr_ns 0.05 +0.0 0.08 ± 6% perf-profile.self.cycles-pp.apparmor_file_alloc_security 0.09 ± 5% +0.0 0.12 ± 4% perf-profile.self.cycles-pp.kill_something_info 0.11 ± 4% +0.0 0.15 ± 6% perf-profile.self.cycles-pp.check_kill_permission 0.02 ± 99% +0.0 0.06 ± 6% perf-profile.self.cycles-pp._raw_spin_lock_irqsave 0.12 ± 4% +0.0 0.16 ± 3% perf-profile.self.cycles-pp.__kill_pgrp_info 0.01 ±223% +0.0 0.06 ± 6% perf-profile.self.cycles-pp.audit_signal_info 0.05 ± 7% +0.1 0.11 ± 3% perf-profile.self.cycles-pp._raw_spin_lock_irq 0.07 +0.1 0.13 ± 5% perf-profile.self.cycles-pp.switch_mm_irqs_off 0.00 +0.1 0.06 ± 6% perf-profile.self.cycles-pp.apparmor_file_free_security 0.10 ± 4% +0.1 0.18 ± 2% perf-profile.self.cycles-pp._raw_spin_lock 0.72 +0.2 0.92 perf-profile.self.cycles-pp.profile_signal_perm 2.97 ± 3% +0.8 3.80 ± 3% perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath 39.00 +3.4 42.44 perf-profile.self.cycles-pp.aa_get_task_label 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