========================================================================================= compiler/cpufreq_governor/kconfig/rootfs/tbox_group/test/testcase/testtime: gcc-12/performance/x86_64-rhel-8.3/debian-12-x86_64-20240206.cgz/lkp-gnr-1ap1/brk_test/aim9/300s commit: fc21959f74bc11 ("mm: abstract vma_expand() to use vma_merge_struct") cacded5e42b960 ("mm: avoid using vma_merge() for new VMAs") 2e71337ac26478 ("mm: explicitly enable an expand-only merge mode for brk()") fc21959f74bc1138 cacded5e42b9609b07b22d80c10 2e71337ac2647889d3d9d76a5ce ---------------- --------------------------- --------------------------- %stddev %change %stddev %change %stddev \ | \ | \ 3220697 -6.0% 3028867 -6.4% 3014713 aim9.brk_test.ops_per_sec 24.58 -3.9% 23.63 -5.5% 23.24 time.user_time 119459 -3.2% 115601 -2.9% 115971 proc-vmstat.nr_active_anon 120943 -3.2% 117079 -2.9% 117450 proc-vmstat.nr_shmem 119459 -3.2% 115601 -2.9% 115971 proc-vmstat.nr_zone_active_anon 0.02 ±120% -100.0% 0.00 -100.0% 0.00 perf-sched.sch_delay.avg.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 3.27 ± 5% +5112.4% 170.40 ±218% +5144.5% 171.45 ±216% perf-sched.sch_delay.max.ms.__cond_resched.__wait_for_common.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity 0.20 ±188% -100.0% 0.00 -100.0% 0.00 perf-sched.sch_delay.max.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 0.01 ± 70% +100.0% 0.01 ± 84% +3512.9% 0.19 ±199% perf-sched.sch_delay.max.ms.irqentry_exit_to_user_mode.asm_sysvec_apic_timer_interrupt.[unknown] 0.93 ± 16% -4.1% 0.89 ± 14% -25.0% 0.70 ± 11% perf-sched.sch_delay.max.ms.pipe_read.vfs_read.ksys_read.do_syscall_64 0.02 ±120% -100.0% 0.00 -100.0% 0.00 perf-sched.wait_time.avg.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 0.20 ±188% -100.0% 0.00 -100.0% 0.00 perf-sched.wait_time.max.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 0.01 ± 70% +100.0% 0.01 ± 84% +3512.9% 0.19 ±199% perf-sched.wait_time.max.ms.irqentry_exit_to_user_mode.asm_sysvec_apic_timer_interrupt.[unknown] 0.02 ± 2% -4.1% 0.02 ± 2% -6.3% 0.02 ± 4% perf-stat.i.MPKI 1.767e+09 +4.2% 1.841e+09 +3.7% 1.833e+09 perf-stat.i.branch-instructions 0.45 -6.2% 0.42 -5.9% 0.42 perf-stat.i.cpi 8.347e+09 +6.6% 8.9e+09 +6.2% 8.863e+09 perf-stat.i.instructions 2.27 +6.6% 2.42 +6.0% 2.41 perf-stat.i.ipc 0.03 ± 4% -2.0% 0.03 ± 3% -7.8% 0.03 ± 4% perf-stat.overall.MPKI 0.44 -5.9% 0.42 -5.4% 0.42 perf-stat.overall.cpi 2.25 +6.2% 2.39 +5.7% 2.38 perf-stat.overall.ipc 1.761e+09 +4.2% 1.834e+09 +3.7% 1.827e+09 perf-stat.ps.branch-instructions 8.319e+09 +6.6% 8.87e+09 +6.2% 8.834e+09 perf-stat.ps.instructions 2.519e+12 +6.4% 2.68e+12 +5.8% 2.665e+12 perf-stat.total.instructions 7.07 -7.1 0.00 -7.1 0.00 perf-profile.calltrace.cycles-pp.mas_store_prealloc.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 6.30 -6.3 0.00 -6.3 0.00 perf-profile.calltrace.cycles-pp.mas_preallocate.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 18.35 -1.0 17.36 -1.4 16.92 perf-profile.calltrace.cycles-pp.perf_event_mmap.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 16.40 -0.9 15.47 -1.3 15.05 perf-profile.calltrace.cycles-pp.perf_event_mmap_event.perf_event_mmap.do_brk_flags.__do_sys_brk.do_syscall_64 10.17 -0.8 9.36 -1.2 8.93 perf-profile.calltrace.cycles-pp.perf_event_mmap_output.perf_iterate_sb.perf_event_mmap_event.perf_event_mmap.do_brk_flags 11.92 -0.8 11.12 -1.3 10.64 perf-profile.calltrace.cycles-pp.perf_iterate_sb.perf_event_mmap_event.perf_event_mmap.do_brk_flags.__do_sys_brk 5.07 ± 3% -0.2 4.84 ± 2% -0.2 4.88 ± 3% perf-profile.calltrace.cycles-pp.__get_unmapped_area.check_brk_limits.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 5.40 ± 3% -0.2 5.18 ± 2% -0.1 5.28 ± 3% perf-profile.calltrace.cycles-pp.check_brk_limits.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 3.66 ± 2% -0.2 3.50 ± 2% -0.1 3.52 ± 3% perf-profile.calltrace.cycles-pp.thp_get_unmapped_area_vmflags.__get_unmapped_area.check_brk_limits.__do_sys_brk.do_syscall_64 0.60 ± 5% -0.1 0.46 ± 45% -0.2 0.36 ± 70% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_safe_stack.brk 1.66 ± 2% -0.1 1.56 ± 3% -0.1 1.60 ± 2% perf-profile.calltrace.cycles-pp.up_write.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 0.68 ± 3% -0.1 0.60 ± 5% -0.1 0.60 ± 5% perf-profile.calltrace.cycles-pp.kfree.perf_event_mmap_event.perf_event_mmap.do_brk_flags.__do_sys_brk 5.91 ± 2% -0.1 5.85 -0.4 5.49 perf-profile.calltrace.cycles-pp.mas_find.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 0.97 ± 4% -0.1 0.91 ± 4% -0.1 0.91 ± 3% perf-profile.calltrace.cycles-pp.mas_next_slot.mas_find.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 4.23 ± 2% -0.0 4.21 -0.4 3.82 perf-profile.calltrace.cycles-pp.mas_walk.mas_find.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.37 ± 70% +0.3 0.67 ± 4% +0.2 0.57 ± 44% perf-profile.calltrace.cycles-pp.strlen.perf_event_mmap_event.perf_event_mmap.do_brk_flags.__do_sys_brk 0.00 +0.5 0.47 ± 44% +0.6 0.58 ± 5% perf-profile.calltrace.cycles-pp.mas_wr_store_entry.mas_store_prealloc.vma_expand.vma_merge_new_range.do_brk_flags 0.49 ± 44% +0.5 1.02 ± 5% +0.5 1.02 ± 8% perf-profile.calltrace.cycles-pp.__vm_enough_memory.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 83.74 +0.5 84.28 +0.6 84.32 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 0.00 +0.6 0.60 ± 6% +0.6 0.58 ± 7% perf-profile.calltrace.cycles-pp.mas_next_range.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.7 0.65 ± 7% +0.7 0.66 ± 4% perf-profile.calltrace.cycles-pp.mas_wr_slot_store.mas_store_prealloc.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +0.7 0.68 ± 4% +0.7 0.67 ± 8% perf-profile.calltrace.cycles-pp.percpu_counter_add_batch.__vm_enough_memory.do_brk_flags.__do_sys_brk.do_syscall_64 0.00 +0.7 0.68 ± 2% +0.8 0.80 ± 4% perf-profile.calltrace.cycles-pp.mas_next_slot.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 80.24 +0.7 80.95 +0.7 80.98 perf-profile.calltrace.cycles-pp.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 0.00 +0.7 0.74 ± 2% +0.8 0.76 ± 2% perf-profile.calltrace.cycles-pp.vma_adjust_trans_huge.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +0.8 0.75 ± 4% +0.8 0.81 ± 5% perf-profile.calltrace.cycles-pp.can_vma_merge_after.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64 0.00 +0.8 0.81 ± 3% +0.7 0.69 ± 7% perf-profile.calltrace.cycles-pp.mas_prev.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64 0.00 +0.8 0.84 ± 5% +0.8 0.84 ± 6% perf-profile.calltrace.cycles-pp.__anon_vma_interval_tree_remove.vma_prepare.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +1.3 1.30 ± 5% +1.3 1.32 ± 2% perf-profile.calltrace.cycles-pp.mas_prev_slot.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64 0.00 +1.4 1.35 ± 4% +1.3 1.32 ± 4% perf-profile.calltrace.cycles-pp.up_write.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +1.6 1.60 ± 4% +1.6 1.56 ± 4% perf-profile.calltrace.cycles-pp.up_write.vma_complete.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +1.8 1.76 ± 2% +1.9 1.86 ± 2% perf-profile.calltrace.cycles-pp.mas_leaf_max_gap.mas_update_gap.mas_store_prealloc.vma_expand.vma_merge_new_range 0.00 +1.8 1.78 ± 2% +1.6 1.64 ± 4% perf-profile.calltrace.cycles-pp.init_multi_vma_prep.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +2.0 2.03 +2.0 2.04 ± 2% perf-profile.calltrace.cycles-pp.down_write.vma_prepare.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +2.1 2.06 ± 3% +2.1 2.06 ± 4% perf-profile.calltrace.cycles-pp.down_write.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +2.3 2.29 ± 3% +2.4 2.37 ± 2% perf-profile.calltrace.cycles-pp.mas_update_gap.mas_store_prealloc.vma_expand.vma_merge_new_range.do_brk_flags 53.64 +2.6 56.21 +2.6 56.28 perf-profile.calltrace.cycles-pp.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 0.00 +3.1 3.14 ± 2% +3.1 3.10 ± 5% perf-profile.calltrace.cycles-pp.vma_complete.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +3.2 3.25 +3.6 3.64 ± 3% perf-profile.calltrace.cycles-pp.mas_wr_store_type.mas_preallocate.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +3.8 3.84 +3.9 3.86 ± 2% perf-profile.calltrace.cycles-pp.vma_prepare.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +5.3 5.31 ± 2% +5.7 5.67 ± 2% perf-profile.calltrace.cycles-pp.mas_preallocate.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +6.1 6.07 +6.4 6.41 perf-profile.calltrace.cycles-pp.mas_store_prealloc.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +27.7 27.74 +28.3 28.33 perf-profile.calltrace.cycles-pp.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64 0.00 +32.4 32.43 +33.0 33.02 perf-profile.calltrace.cycles-pp.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 18.49 -1.0 17.47 -1.5 17.01 perf-profile.children.cycles-pp.perf_event_mmap 6.54 -1.0 5.54 ± 2% -0.7 5.90 ± 2% perf-profile.children.cycles-pp.mas_preallocate 7.40 -1.0 6.40 ± 2% -0.6 6.76 perf-profile.children.cycles-pp.mas_store_prealloc 5.68 -1.0 4.72 -1.0 4.66 ± 3% perf-profile.children.cycles-pp.up_write 16.88 -0.9 15.93 -1.4 15.51 perf-profile.children.cycles-pp.perf_event_mmap_event 10.35 -0.8 9.53 -1.2 9.10 perf-profile.children.cycles-pp.perf_event_mmap_output 12.16 -0.8 11.35 -1.3 10.86 perf-profile.children.cycles-pp.perf_iterate_sb 4.02 ± 2% -0.7 3.32 -0.3 3.72 ± 3% perf-profile.children.cycles-pp.mas_wr_store_type 2.97 -0.6 2.37 ± 3% -0.5 2.45 ± 2% perf-profile.children.cycles-pp.mas_update_gap 1.36 ± 8% -0.6 0.80 ± 4% -0.5 0.86 ± 4% perf-profile.children.cycles-pp.can_vma_merge_after 2.26 ± 2% -0.5 1.80 ± 2% -0.4 1.89 ± 2% perf-profile.children.cycles-pp.mas_leaf_max_gap 3.71 ± 2% -0.3 3.44 -0.3 3.42 ± 4% perf-profile.children.cycles-pp.vma_complete 5.62 ± 3% -0.2 5.40 ± 2% -0.1 5.51 ± 3% perf-profile.children.cycles-pp.check_brk_limits 3.83 ± 2% -0.2 3.65 ± 2% -0.2 3.67 ± 3% perf-profile.children.cycles-pp.thp_get_unmapped_area_vmflags 0.66 ± 7% -0.1 0.55 ± 9% -0.1 0.54 ± 6% perf-profile.children.cycles-pp.may_expand_vm 1.98 ± 3% -0.1 1.86 ± 2% -0.3 1.71 ± 4% perf-profile.children.cycles-pp.init_multi_vma_prep 0.78 ± 3% -0.1 0.69 ± 4% -0.1 0.69 ± 5% perf-profile.children.cycles-pp.kfree 0.15 ± 12% -0.1 0.08 ± 13% -0.1 0.07 ± 23% perf-profile.children.cycles-pp.arch_vma_name 6.23 ± 2% -0.1 6.17 -0.4 5.78 perf-profile.children.cycles-pp.mas_find 0.60 ± 6% -0.1 0.54 ± 8% -0.1 0.51 ± 7% perf-profile.children.cycles-pp.entry_SYSCALL_64_safe_stack 4.32 ± 2% -0.0 4.30 -0.4 3.92 perf-profile.children.cycles-pp.mas_walk 0.20 ± 8% -0.0 0.17 ± 7% -0.0 0.15 ± 14% perf-profile.children.cycles-pp.__x64_sys_brk 0.26 ± 5% -0.0 0.24 ± 9% -0.0 0.22 ± 9% perf-profile.children.cycles-pp.__rb_insert_augmented 0.23 ± 7% +0.0 0.24 ± 18% +0.0 0.27 ± 6% perf-profile.children.cycles-pp.hrtimer_interrupt 0.24 ± 7% +0.0 0.24 ± 18% +0.0 0.27 ± 5% perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt 0.58 ± 7% +0.1 0.66 ± 7% +0.1 0.67 ± 2% perf-profile.children.cycles-pp.mas_wr_slot_store 0.19 ± 10% +0.1 0.31 ± 10% +0.1 0.32 ± 16% perf-profile.children.cycles-pp.rb_next 0.50 ± 4% +0.1 0.62 ± 7% +0.2 0.66 ± 7% perf-profile.children.cycles-pp.mas_wr_store_entry 0.40 ± 6% +0.1 0.53 ± 6% +0.1 0.54 ± 6% perf-profile.children.cycles-pp.strnlen 0.58 ± 13% +0.2 0.75 ± 4% +0.1 0.72 ± 13% perf-profile.children.cycles-pp.strlen 0.96 ± 6% +0.2 1.14 ± 3% +0.2 1.16 ± 3% perf-profile.children.cycles-pp.rcu_all_qs 0.68 ± 3% +0.3 0.98 ± 5% +0.3 1.01 ± 6% perf-profile.children.cycles-pp.__anon_vma_interval_tree_remove 1.77 ± 4% +0.3 2.09 +0.3 2.08 ± 4% perf-profile.children.cycles-pp.__cond_resched 0.00 +0.4 0.36 ± 9% +0.4 0.36 ± 8% perf-profile.children.cycles-pp.mas_next_setup 0.36 ± 8% +0.4 0.76 ± 3% +0.4 0.76 ± 9% perf-profile.children.cycles-pp.percpu_counter_add_batch 0.48 ± 7% +0.4 0.90 ± 6% +0.4 0.86 ± 4% perf-profile.children.cycles-pp.mas_prev_setup 84.69 +0.5 85.19 +0.6 85.27 perf-profile.children.cycles-pp.do_syscall_64 0.67 ± 9% +0.6 1.24 ± 4% +0.6 1.27 ± 7% perf-profile.children.cycles-pp.__vm_enough_memory 3.81 +0.6 4.39 +0.6 4.40 ± 3% perf-profile.children.cycles-pp.down_write 80.98 +0.7 81.64 +0.7 81.71 perf-profile.children.cycles-pp.__do_sys_brk 1.05 ± 4% +0.7 1.72 ± 3% +0.8 1.82 ± 3% perf-profile.children.cycles-pp.mas_next_slot 0.00 +0.7 0.70 ± 6% +0.7 0.69 ± 5% perf-profile.children.cycles-pp.mas_next_range 1.11 ± 4% +1.0 2.10 ± 3% +0.8 1.92 ± 3% perf-profile.children.cycles-pp.mas_prev 2.82 ± 3% +1.2 4.07 +1.3 4.09 ± 2% perf-profile.children.cycles-pp.vma_prepare 1.54 ± 4% +1.3 2.88 ± 3% +1.3 2.84 ± 3% perf-profile.children.cycles-pp.mas_prev_slot 54.97 +1.6 56.61 +1.8 56.79 perf-profile.children.cycles-pp.do_brk_flags 0.00 +28.6 28.64 +29.2 29.16 perf-profile.children.cycles-pp.vma_expand 0.00 +32.9 32.91 +33.4 33.37 perf-profile.children.cycles-pp.vma_merge_new_range 5.90 ± 2% -3.5 2.37 ± 4% -3.4 2.55 perf-profile.self.cycles-pp.do_brk_flags 5.36 ± 2% -1.0 4.38 -1.0 4.36 ± 3% perf-profile.self.cycles-pp.up_write 10.18 -0.8 9.36 -1.2 8.94 perf-profile.self.cycles-pp.perf_event_mmap_output 3.86 ± 2% -0.7 3.18 -0.3 3.57 ± 3% perf-profile.self.cycles-pp.mas_wr_store_type 1.28 ± 7% -0.5 0.74 ± 4% -0.5 0.78 ± 4% perf-profile.self.cycles-pp.can_vma_merge_after 3.02 ± 2% -0.5 2.52 ± 4% -0.3 2.75 ± 3% perf-profile.self.cycles-pp.mas_store_prealloc 2.19 ± 2% -0.4 1.78 ± 2% -0.3 1.87 ± 2% perf-profile.self.cycles-pp.mas_leaf_max_gap 5.03 -0.4 4.67 -0.1 4.92 ± 2% perf-profile.self.cycles-pp.__do_sys_brk 2.60 ± 4% -0.3 2.27 ± 5% -0.3 2.25 ± 2% perf-profile.self.cycles-pp.mas_preallocate 1.89 ± 4% -0.3 1.59 ± 4% -0.3 1.62 ± 5% perf-profile.self.cycles-pp.perf_event_mmap_event 1.71 ± 4% -0.2 1.53 ± 3% -0.2 1.50 ± 5% perf-profile.self.cycles-pp.entry_SYSCALL_64 0.74 ± 3% -0.2 0.57 ± 7% -0.2 0.56 ± 6% perf-profile.self.cycles-pp.mas_update_gap 1.89 ± 4% -0.2 1.73 ± 2% -0.3 1.62 ± 4% perf-profile.self.cycles-pp.init_multi_vma_prep 1.58 ± 4% -0.1 1.47 ± 3% -0.2 1.42 ± 4% perf-profile.self.cycles-pp.perf_event_mmap 1.27 ± 2% -0.1 1.16 ± 2% -0.1 1.19 ± 9% perf-profile.self.cycles-pp.vma_complete 1.20 ± 2% -0.1 1.12 ± 4% -0.1 1.08 ± 2% perf-profile.self.cycles-pp.do_syscall_64 0.69 ± 2% -0.1 0.61 ± 4% -0.1 0.60 ± 5% perf-profile.self.cycles-pp.kfree 0.60 ± 6% -0.1 0.54 ± 8% -0.1 0.51 ± 7% perf-profile.self.cycles-pp.entry_SYSCALL_64_safe_stack 1.60 ± 2% -0.1 1.56 ± 6% -0.1 1.55 perf-profile.self.cycles-pp.down_write_killable 4.24 ± 2% -0.0 4.20 -0.4 3.84 perf-profile.self.cycles-pp.mas_walk 0.50 ± 7% -0.0 0.47 ± 9% -0.1 0.45 ± 5% perf-profile.self.cycles-pp.may_expand_vm 0.42 ± 4% +0.1 0.49 ± 7% +0.1 0.53 ± 6% perf-profile.self.cycles-pp.mas_wr_store_entry 0.15 ± 10% +0.1 0.24 ± 11% +0.1 0.23 ± 19% perf-profile.self.cycles-pp.rb_next 0.58 ± 8% +0.1 0.68 ± 5% +0.1 0.71 ± 6% perf-profile.self.cycles-pp.rcu_all_qs 0.37 ± 5% +0.1 0.50 ± 7% +0.1 0.50 ± 4% perf-profile.self.cycles-pp.strnlen 0.54 ± 13% +0.2 0.68 ± 4% +0.1 0.64 ± 14% perf-profile.self.cycles-pp.strlen 1.01 ± 6% +0.2 1.17 ± 2% +0.1 1.11 ± 4% perf-profile.self.cycles-pp.__cond_resched 0.66 ± 6% +0.2 0.83 ± 2% +0.2 0.84 ± 3% perf-profile.self.cycles-pp.vma_prepare 0.46 ± 6% +0.2 0.67 ± 7% +0.2 0.70 ± 5% perf-profile.self.cycles-pp.__anon_vma_interval_tree_remove 0.34 ± 12% +0.2 0.54 ± 3% +0.2 0.58 ± 9% perf-profile.self.cycles-pp.__vm_enough_memory 0.00 +0.3 0.29 ± 10% +0.3 0.28 ± 11% perf-profile.self.cycles-pp.mas_next_setup 0.32 ± 11% +0.3 0.62 ± 7% +0.3 0.58 ± 8% perf-profile.self.cycles-pp.mas_prev_setup 0.23 ± 7% +0.3 0.55 ± 6% +0.3 0.55 ± 10% perf-profile.self.cycles-pp.percpu_counter_add_batch 0.00 +0.4 0.35 ± 7% +0.3 0.30 ± 7% perf-profile.self.cycles-pp.mas_next_range 2.65 ± 3% +0.4 3.00 ± 2% +0.4 3.05 ± 2% perf-profile.self.cycles-pp.down_write 0.64 ± 5% +0.6 1.21 ± 3% +0.5 1.12 ± 5% perf-profile.self.cycles-pp.mas_prev 0.89 ± 5% +0.7 1.54 ± 3% +0.8 1.64 ± 4% perf-profile.self.cycles-pp.mas_next_slot 1.46 ± 4% +1.3 2.72 ± 3% +1.2 2.70 ± 3% perf-profile.self.cycles-pp.mas_prev_slot 0.00 +1.3 1.33 ± 2% +1.2 1.16 ± 4% perf-profile.self.cycles-pp.vma_merge_new_range 0.00 +3.5 3.54 ± 3% +3.6 3.55 ± 2% perf-profile.self.cycles-pp.vma_expand ========================================================================================= compiler/cpufreq_governor/kconfig/rootfs/tbox_group/test/testcase/testtime: gcc-12/performance/x86_64-rhel-8.3/debian-12-x86_64-20240206.cgz/lkp-emr-2sp1/brk_test/aim9/300s commit: fc21959f74bc11 ("mm: abstract vma_expand() to use vma_merge_struct") cacded5e42b960 ("mm: avoid using vma_merge() for new VMAs") 2e71337ac26478 ("mm: explicitly enable an expand-only merge mode for brk()") fc21959f74bc1138 cacded5e42b9609b07b22d80c10 2e71337ac2647889d3d9d76a5ce ---------------- --------------------------- --------------------------- %stddev %change %stddev %change %stddev \ | \ | \ 3669298 -6.5% 3430070 -6.8% 3420919 aim9.brk_test.ops_per_sec 23.53 -4.9% 22.38 -6.4% 22.03 time.user_time 491107 ± 5% -7.2% 455906 ± 6% -5.5% 464283 ± 6% meminfo.Active 491011 ± 5% -7.2% 455810 ± 6% -5.5% 464155 ± 6% meminfo.Active(anon) 505666 ± 5% -7.0% 470410 ± 5% -5.3% 478879 ± 6% meminfo.Shmem 122753 ± 5% -7.1% 113979 ± 6% -5.5% 116019 ± 6% proc-vmstat.nr_active_anon 899298 -1.0% 890515 -0.7% 892592 proc-vmstat.nr_file_pages 126417 ± 5% -6.9% 117634 ± 5% -5.3% 119701 ± 6% proc-vmstat.nr_shmem 122753 ± 5% -7.1% 113979 ± 6% -5.5% 116019 ± 6% proc-vmstat.nr_zone_active_anon 595.50 ± 22% +53.6% 914.50 ± 12% +17.1% 697.33 ± 20% proc-vmstat.numa_hint_faults_local 17958 -4.3% 17188 ± 2% -4.3% 17180 ± 2% proc-vmstat.pgactivate 1817569 ± 69% -43.1% 1035076 ±127% +63.5% 2972153 ± 3% numa-meminfo.node0.FilePages 16515 ± 73% -29.4% 11657 ±108% +79.5% 29650 numa-meminfo.node0.Mapped 1811617 ± 69% -43.2% 1029482 ±128% +63.8% 2967951 ± 3% numa-meminfo.node0.Unevictable 40474 ± 40% -61.8% 15444 ± 40% -50.4% 20065 ± 59% numa-meminfo.node1.KReclaimable 40474 ± 40% -61.8% 15444 ± 40% -50.4% 20065 ± 59% numa-meminfo.node1.SReclaimable 484115 ± 6% -7.3% 448760 ± 6% -10.1% 435387 ± 11% numa-meminfo.node3.Active 484083 ± 6% -7.3% 448760 ± 6% -10.1% 435387 ± 11% numa-meminfo.node3.Active(anon) 485577 ± 6% -7.3% 450224 ± 6% -10.0% 436799 ± 11% numa-meminfo.node3.Shmem 454393 ± 69% -43.1% 258770 ±127% +63.5% 743038 ± 3% numa-vmstat.node0.nr_file_pages 4178 ± 73% -28.5% 2988 ±107% +81.6% 7590 ± 2% numa-vmstat.node0.nr_mapped 452904 ± 69% -43.2% 257370 ±128% +63.8% 741987 ± 3% numa-vmstat.node0.nr_unevictable 452904 ± 69% -43.2% 257370 ±128% +63.8% 741987 ± 3% numa-vmstat.node0.nr_zone_unevictable 10118 ± 40% -61.8% 3861 ± 40% -50.4% 5016 ± 59% numa-vmstat.node1.nr_slab_reclaimable 121015 ± 6% -7.3% 112196 ± 6% -10.1% 108836 ± 11% numa-vmstat.node3.nr_active_anon 121371 ± 6% -7.3% 112537 ± 6% -10.1% 109168 ± 11% numa-vmstat.node3.nr_shmem 121015 ± 6% -7.3% 112196 ± 6% -10.1% 108836 ± 11% numa-vmstat.node3.nr_zone_active_anon 0.01 ± 52% -100.0% 0.00 -100.0% 0.00 perf-sched.sch_delay.avg.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 0.01 ± 15% +7.0% 0.01 ± 16% -100.0% 0.00 perf-sched.sch_delay.avg.ms.irq_thread.kthread.ret_from_fork.ret_from_fork_asm 0.06 ± 69% -100.0% 0.00 -100.0% 0.00 perf-sched.sch_delay.max.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 0.01 ± 17% -3.8% 0.01 ± 21% -100.0% 0.00 perf-sched.sch_delay.max.ms.irq_thread.kthread.ret_from_fork.ret_from_fork_asm 400.06 +0.0% 400.07 -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.irq_thread.kthread.ret_from_fork.ret_from_fork_asm 10.00 +0.0% 10.00 -100.0% 0.00 perf-sched.wait_and_delay.count.irq_thread.kthread.ret_from_fork.ret_from_fork_asm 999.53 -0.0% 999.38 -100.0% 0.00 perf-sched.wait_and_delay.max.ms.irq_thread.kthread.ret_from_fork.ret_from_fork_asm 0.01 ± 52% -100.0% 0.00 -100.0% 0.00 perf-sched.wait_time.avg.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 400.05 +0.0% 400.06 -100.0% 0.00 perf-sched.wait_time.avg.ms.irq_thread.kthread.ret_from_fork.ret_from_fork_asm 0.06 ± 69% -100.0% 0.00 -100.0% 0.00 perf-sched.wait_time.max.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 999.52 -0.0% 999.37 -100.0% 0.00 perf-sched.wait_time.max.ms.irq_thread.kthread.ret_from_fork.ret_from_fork_asm 2.071e+09 +2.8% 2.128e+09 +2.8% 2.13e+09 perf-stat.i.branch-instructions 0.48 -4.2% 0.46 -4.9% 0.45 perf-stat.i.cpi 4.717e+09 -0.7% 4.686e+09 +0.1% 4.723e+09 perf-stat.i.cpu-cycles 9.794e+09 +5.1% 1.03e+10 +5.2% 1.03e+10 perf-stat.i.instructions 2.15 +5.8% 2.28 +5.5% 2.27 perf-stat.i.ipc 0.34 ± 3% -0.0 0.33 -0.0 0.34 perf-stat.overall.branch-miss-rate% 0.48 -5.5% 0.46 -4.8% 0.46 perf-stat.overall.cpi 2.08 +5.8% 2.20 +5.1% 2.18 perf-stat.overall.ipc 2.063e+09 +2.8% 2.12e+09 +2.8% 2.122e+09 perf-stat.ps.branch-instructions 4.703e+09 -0.7% 4.672e+09 +0.1% 4.709e+09 perf-stat.ps.cpu-cycles 9.758e+09 +5.1% 1.026e+10 +5.2% 1.026e+10 perf-stat.ps.instructions 2.944e+12 +5.5% 3.106e+12 +5.0% 3.092e+12 perf-stat.total.instructions 6.54 ± 2% -6.5 0.00 -6.5 0.00 perf-profile.calltrace.cycles-pp.mas_store_prealloc.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 6.22 -6.2 0.00 -6.2 0.00 perf-profile.calltrace.cycles-pp.mas_preallocate.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 17.43 -0.7 16.76 -1.0 16.39 perf-profile.calltrace.cycles-pp.perf_event_mmap.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 9.69 ± 2% -0.6 9.07 -1.0 8.73 perf-profile.calltrace.cycles-pp.perf_event_mmap_output.perf_iterate_sb.perf_event_mmap_event.perf_event_mmap.do_brk_flags 11.30 ± 2% -0.6 10.71 -0.9 10.35 perf-profile.calltrace.cycles-pp.perf_iterate_sb.perf_event_mmap_event.perf_event_mmap.do_brk_flags.__do_sys_brk 15.57 -0.5 15.05 -0.8 14.73 perf-profile.calltrace.cycles-pp.perf_event_mmap_event.perf_event_mmap.do_brk_flags.__do_sys_brk.do_syscall_64 2.76 -0.1 2.62 ± 3% -0.2 2.60 ± 3% perf-profile.calltrace.cycles-pp.userfaultfd_unmap_complete.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 0.84 ± 4% -0.1 0.74 ± 8% -0.1 0.70 ± 5% perf-profile.calltrace.cycles-pp.security_vm_enough_memory_mm.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.75 ± 7% -0.1 0.68 ± 10% -0.1 0.64 ± 10% perf-profile.calltrace.cycles-pp.kthread.ret_from_fork.ret_from_fork_asm 0.75 ± 7% -0.1 0.68 ± 10% -0.1 0.64 ± 10% perf-profile.calltrace.cycles-pp.ret_from_fork.ret_from_fork_asm 0.75 ± 7% -0.1 0.68 ± 10% -0.1 0.64 ± 10% perf-profile.calltrace.cycles-pp.ret_from_fork_asm 1.12 ± 5% +0.2 1.29 ± 3% +0.2 1.29 ± 2% perf-profile.calltrace.cycles-pp.sized_strscpy.perf_event_mmap_event.perf_event_mmap.do_brk_flags.__do_sys_brk 0.65 ± 6% +0.4 1.07 ± 5% +0.4 1.07 ± 4% perf-profile.calltrace.cycles-pp.__vm_enough_memory.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.5 0.48 ± 45% +0.5 0.54 ± 6% perf-profile.calltrace.cycles-pp.mas_next_range.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.5 0.54 ± 4% +0.4 0.36 ± 70% perf-profile.calltrace.cycles-pp.mas_wr_slot_store.mas_store_prealloc.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +0.5 0.55 ± 4% +0.5 0.48 ± 45% perf-profile.calltrace.cycles-pp.mas_wr_store_entry.mas_store_prealloc.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +0.7 0.66 ± 4% +0.8 0.80 ± 4% perf-profile.calltrace.cycles-pp.mas_next_slot.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.7 0.68 ± 9% +0.7 0.71 ± 5% perf-profile.calltrace.cycles-pp.percpu_counter_add_batch.__vm_enough_memory.do_brk_flags.__do_sys_brk.do_syscall_64 0.00 +0.7 0.68 ± 4% +0.8 0.76 ± 6% perf-profile.calltrace.cycles-pp.can_vma_merge_after.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64 0.00 +0.8 0.76 ± 2% +0.8 0.77 ± 7% perf-profile.calltrace.cycles-pp.vma_adjust_trans_huge.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 81.90 +0.8 82.67 +0.7 82.64 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.brk 0.00 +0.8 0.80 ± 3% +0.7 0.65 ± 8% perf-profile.calltrace.cycles-pp.mas_prev.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64 80.94 +0.8 81.76 +0.8 81.74 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 0.00 +0.8 0.82 ± 3% +0.9 0.87 ± 6% perf-profile.calltrace.cycles-pp.__anon_vma_interval_tree_remove.vma_prepare.vma_expand.vma_merge_new_range.do_brk_flags 77.52 +1.0 78.50 +0.9 78.40 perf-profile.calltrace.cycles-pp.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 0.00 +1.3 1.26 ± 3% +1.3 1.33 ± 5% perf-profile.calltrace.cycles-pp.mas_prev_slot.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64 0.00 +1.3 1.35 ± 3% +1.3 1.30 ± 4% perf-profile.calltrace.cycles-pp.up_write.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +1.6 1.56 ± 2% +1.6 1.56 ± 5% perf-profile.calltrace.cycles-pp.up_write.vma_complete.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +1.7 1.72 ± 3% +1.7 1.66 ± 3% perf-profile.calltrace.cycles-pp.init_multi_vma_prep.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +1.9 1.87 ± 4% +1.9 1.94 ± 4% perf-profile.calltrace.cycles-pp.mas_leaf_max_gap.mas_update_gap.mas_store_prealloc.vma_expand.vma_merge_new_range 0.00 +2.1 2.07 ± 2% +2.1 2.15 ± 4% perf-profile.calltrace.cycles-pp.down_write.vma_prepare.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +2.1 2.14 ± 2% +2.1 2.12 ± 3% perf-profile.calltrace.cycles-pp.down_write.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +2.4 2.37 ± 2% +2.4 2.41 ± 3% perf-profile.calltrace.cycles-pp.mas_update_gap.mas_store_prealloc.vma_expand.vma_merge_new_range.do_brk_flags 51.80 +2.9 54.66 +2.7 54.52 perf-profile.calltrace.cycles-pp.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 0.00 +3.0 3.02 ± 2% +3.2 3.17 perf-profile.calltrace.cycles-pp.mas_wr_store_type.mas_preallocate.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +3.1 3.06 +3.1 3.08 ± 2% perf-profile.calltrace.cycles-pp.vma_complete.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +3.9 3.86 +4.0 3.96 ± 2% perf-profile.calltrace.cycles-pp.vma_prepare.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +5.0 5.01 +5.2 5.18 ± 2% perf-profile.calltrace.cycles-pp.mas_preallocate.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +5.9 5.88 +6.1 6.10 perf-profile.calltrace.cycles-pp.mas_store_prealloc.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +27.1 27.13 +27.4 27.39 perf-profile.calltrace.cycles-pp.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64 0.00 +31.6 31.63 +32.0 32.01 perf-profile.calltrace.cycles-pp.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 6.46 -1.2 5.24 -1.1 5.40 ± 2% perf-profile.children.cycles-pp.mas_preallocate 5.54 -0.9 4.64 -0.9 4.63 ± 3% perf-profile.children.cycles-pp.up_write 3.99 -0.9 3.10 ± 2% -0.8 3.24 perf-profile.children.cycles-pp.mas_wr_store_type 17.57 -0.7 16.87 -1.1 16.50 perf-profile.children.cycles-pp.perf_event_mmap 9.85 ± 2% -0.6 9.22 -1.0 8.90 perf-profile.children.cycles-pp.perf_event_mmap_output 6.82 ± 2% -0.6 6.22 -0.4 6.43 perf-profile.children.cycles-pp.mas_store_prealloc 1.33 ± 5% -0.6 0.75 ± 4% -0.5 0.82 ± 5% perf-profile.children.cycles-pp.can_vma_merge_after 11.53 ± 2% -0.6 10.96 -1.0 10.58 perf-profile.children.cycles-pp.perf_iterate_sb 16.03 -0.5 15.50 -0.8 15.18 perf-profile.children.cycles-pp.perf_event_mmap_event 2.65 ± 3% -0.2 2.40 ± 3% -0.2 2.44 ± 3% perf-profile.children.cycles-pp.mas_update_gap 2.18 ± 2% -0.2 1.94 ± 3% -0.2 1.99 ± 3% perf-profile.children.cycles-pp.mas_leaf_max_gap 2.85 -0.2 2.70 ± 3% -0.2 2.68 ± 3% perf-profile.children.cycles-pp.userfaultfd_unmap_complete 3.52 -0.1 3.38 ± 2% -0.1 3.38 ± 2% perf-profile.children.cycles-pp.vma_complete 0.62 ± 7% -0.1 0.48 ± 9% -0.1 0.50 ± 7% perf-profile.children.cycles-pp.may_expand_vm 1.92 ± 2% -0.1 1.79 ± 3% -0.2 1.73 ± 3% perf-profile.children.cycles-pp.init_multi_vma_prep 1.05 ± 3% -0.1 0.95 ± 6% -0.1 0.91 ± 6% perf-profile.children.cycles-pp.security_vm_enough_memory_mm 0.75 ± 7% -0.1 0.68 ± 10% -0.1 0.64 ± 10% perf-profile.children.cycles-pp.kthread 0.40 ± 6% -0.1 0.35 ± 9% -0.0 0.38 ± 8% perf-profile.children.cycles-pp.syscall_exit_to_user_mode_prepare 0.35 ± 2% -0.0 0.33 ± 7% -0.0 0.31 ± 6% perf-profile.children.cycles-pp.brk_test 0.11 ± 20% +0.0 0.14 ± 8% +0.0 0.13 ± 6% perf-profile.children.cycles-pp.anon_vma_interval_tree_remove 0.52 ± 3% +0.0 0.56 ± 4% +0.0 0.54 ± 10% perf-profile.children.cycles-pp.mas_wr_slot_store 0.20 ± 11% +0.1 0.28 ± 7% +0.1 0.31 ± 5% perf-profile.children.cycles-pp.rb_next 0.49 ± 3% +0.1 0.61 ± 4% +0.2 0.64 ± 7% perf-profile.children.cycles-pp.mas_wr_store_entry 0.98 ± 4% +0.1 1.11 ± 3% +0.1 1.11 ± 4% perf-profile.children.cycles-pp.rcu_all_qs 0.39 ± 7% +0.2 0.55 ± 7% +0.2 0.60 ± 6% perf-profile.children.cycles-pp.strnlen 1.18 ± 5% +0.2 1.37 ± 3% +0.2 1.36 ± 2% perf-profile.children.cycles-pp.sized_strscpy 1.78 ± 3% +0.3 2.04 ± 2% +0.2 2.02 ± 3% perf-profile.children.cycles-pp.__cond_resched 0.00 +0.3 0.33 ± 4% +0.3 0.31 ± 10% perf-profile.children.cycles-pp.mas_next_setup 0.41 ± 9% +0.4 0.76 ± 7% +0.4 0.80 ± 6% perf-profile.children.cycles-pp.percpu_counter_add_batch 0.58 ± 4% +0.4 0.96 ± 2% +0.4 1.01 ± 6% perf-profile.children.cycles-pp.__anon_vma_interval_tree_remove 0.44 ± 17% +0.4 0.85 ± 7% +0.4 0.80 ± 5% perf-profile.children.cycles-pp.mas_prev_setup 4.11 ± 2% +0.4 4.52 +0.5 4.58 perf-profile.children.cycles-pp.down_write 0.74 ± 6% +0.6 1.29 ± 5% +0.6 1.32 ± 3% perf-profile.children.cycles-pp.__vm_enough_memory 0.00 +0.7 0.67 ± 6% +0.6 0.63 ± 7% perf-profile.children.cycles-pp.mas_next_range 0.95 ± 5% +0.7 1.64 ± 2% +0.9 1.84 ± 3% perf-profile.children.cycles-pp.mas_next_slot 78.23 +0.9 79.17 +0.8 79.07 perf-profile.children.cycles-pp.__do_sys_brk 1.02 ± 14% +1.0 1.99 ± 4% +0.8 1.86 ± 6% perf-profile.children.cycles-pp.mas_prev 2.89 ± 3% +1.2 4.10 +1.3 4.19 ± 2% perf-profile.children.cycles-pp.vma_prepare 1.38 ± 12% +1.3 2.73 ± 4% +1.3 2.73 ± 3% perf-profile.children.cycles-pp.mas_prev_slot 53.08 +1.9 55.03 +1.9 54.96 perf-profile.children.cycles-pp.do_brk_flags 0.00 +28.0 27.95 +28.2 28.20 perf-profile.children.cycles-pp.vma_expand 0.00 +32.1 32.10 +32.3 32.32 perf-profile.children.cycles-pp.vma_merge_new_range 5.69 -3.4 2.34 ± 3% -3.3 2.36 ± 3% perf-profile.self.cycles-pp.do_brk_flags 5.22 -0.9 4.33 ± 2% -0.9 4.33 ± 3% perf-profile.self.cycles-pp.up_write 3.82 -0.9 2.95 ± 3% -0.7 3.09 perf-profile.self.cycles-pp.mas_wr_store_type 9.68 ± 2% -0.6 9.05 -1.0 8.73 perf-profile.self.cycles-pp.perf_event_mmap_output 1.28 ± 5% -0.6 0.69 ± 6% -0.5 0.75 ± 5% perf-profile.self.cycles-pp.can_vma_merge_after 2.88 ± 3% -0.4 2.44 ± 2% -0.2 2.65 ± 2% perf-profile.self.cycles-pp.mas_store_prealloc 2.55 -0.3 2.22 ± 2% -0.3 2.22 ± 4% perf-profile.self.cycles-pp.mas_preallocate 4.98 ± 2% -0.3 4.70 -0.2 4.76 perf-profile.self.cycles-pp.__do_sys_brk 2.15 ± 3% -0.2 1.93 ± 3% -0.2 1.98 ± 3% perf-profile.self.cycles-pp.mas_leaf_max_gap 1.82 -0.2 1.60 ± 4% -0.2 1.62 ± 3% perf-profile.self.cycles-pp.perf_event_mmap_event 1.51 ± 4% -0.2 1.31 ± 4% -0.3 1.26 perf-profile.self.cycles-pp.perf_event_mmap 1.85 ± 2% -0.2 1.66 ± 3% -0.2 1.61 ± 3% perf-profile.self.cycles-pp.init_multi_vma_prep 2.77 -0.1 2.63 ± 3% -0.2 2.60 ± 3% perf-profile.self.cycles-pp.userfaultfd_unmap_complete 0.75 ± 5% -0.1 0.67 ± 4% -0.1 0.65 ± 5% perf-profile.self.cycles-pp.security_vm_enough_memory_mm 0.88 ± 2% -0.0 0.85 ± 3% -0.1 0.82 ± 4% perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe 0.28 ± 5% -0.0 0.26 ± 8% -0.0 0.24 ± 8% perf-profile.self.cycles-pp.brk_test 0.03 ± 70% +0.0 0.07 ± 14% +0.0 0.07 ± 8% perf-profile.self.cycles-pp.anon_vma_interval_tree_remove 0.15 ± 12% +0.1 0.20 ± 5% +0.1 0.24 ± 6% perf-profile.self.cycles-pp.rb_next 0.40 ± 5% +0.1 0.48 ± 5% +0.1 0.50 ± 10% perf-profile.self.cycles-pp.mas_wr_store_entry 0.34 ± 6% +0.2 0.50 ± 8% +0.2 0.54 ± 4% perf-profile.self.cycles-pp.strnlen 0.66 ± 4% +0.2 0.84 ± 5% +0.1 0.80 ± 4% perf-profile.self.cycles-pp.vma_prepare 1.12 ± 5% +0.2 1.30 ± 3% +0.2 1.28 ± 2% perf-profile.self.cycles-pp.sized_strscpy 3.00 ± 2% +0.2 3.19 ± 2% +0.3 3.27 ± 2% perf-profile.self.cycles-pp.down_write 0.92 ± 4% +0.2 1.13 ± 2% +0.2 1.08 ± 3% perf-profile.self.cycles-pp.__cond_resched 0.00 +0.3 0.26 ± 7% +0.3 0.25 ± 12% perf-profile.self.cycles-pp.mas_next_setup 0.28 ± 8% +0.3 0.54 ± 8% +0.3 0.56 ± 6% perf-profile.self.cycles-pp.percpu_counter_add_batch 0.29 ± 12% +0.3 0.58 ± 9% +0.3 0.60 ± 4% perf-profile.self.cycles-pp.__vm_enough_memory 0.29 ± 24% +0.3 0.58 ± 7% +0.2 0.54 ± 7% perf-profile.self.cycles-pp.mas_prev_setup 0.40 ± 4% +0.3 0.70 ± 2% +0.3 0.72 ± 8% perf-profile.self.cycles-pp.__anon_vma_interval_tree_remove 0.00 +0.4 0.36 ± 6% +0.3 0.28 ± 12% perf-profile.self.cycles-pp.mas_next_range 0.58 ± 14% +0.5 1.12 ± 5% +0.5 1.10 ± 6% perf-profile.self.cycles-pp.mas_prev 0.81 ± 4% +0.7 1.48 ± 3% +0.8 1.64 ± 4% perf-profile.self.cycles-pp.mas_next_slot 1.32 ± 11% +1.3 2.59 ± 3% +1.3 2.60 ± 3% perf-profile.self.cycles-pp.mas_prev_slot 0.00 +1.3 1.30 ± 4% +1.1 1.14 ± 6% perf-profile.self.cycles-pp.vma_merge_new_range 0.00 +3.4 3.39 +3.4 3.36 perf-profile.self.cycles-pp.vma_expand ========================================================================================= compiler/cpufreq_governor/kconfig/rootfs/tbox_group/test/testcase/testtime: gcc-12/performance/x86_64-rhel-8.3/debian-12-x86_64-20240206.cgz/lkp-spr-2sp4/brk_test/aim9/300s commit: fc21959f74bc11 ("mm: abstract vma_expand() to use vma_merge_struct") cacded5e42b960 ("mm: avoid using vma_merge() for new VMAs") 2e71337ac26478 ("mm: explicitly enable an expand-only merge mode for brk()") fc21959f74bc1138 cacded5e42b9609b07b22d80c10 2e71337ac2647889d3d9d76a5ce ---------------- --------------------------- --------------------------- %stddev %change %stddev %change %stddev \ | \ | \ 3540976 -6.4% 3314159 -6.7% 3302864 aim9.brk_test.ops_per_sec 23.65 -5.8% 22.28 -6.5% 22.10 time.user_time 568.02 ± 10% -0.2% 567.09 ± 12% +18.0% 670.52 ± 8% sched_debug.cfs_rq:/.avg_vruntime.min 568.02 ± 10% -0.2% 567.09 ± 12% +18.0% 670.52 ± 8% sched_debug.cfs_rq:/.min_vruntime.min 111409 ± 2% -5.1% 105748 ± 3% -4.9% 105984 ± 2% proc-vmstat.nr_active_anon 114711 ± 2% -5.0% 109006 ± 3% -4.7% 109341 ± 2% proc-vmstat.nr_shmem 111409 ± 2% -5.1% 105748 ± 3% -4.9% 105984 ± 2% proc-vmstat.nr_zone_active_anon 17422 ± 2% -5.3% 16494 -1.9% 17084 ± 2% proc-vmstat.pgactivate 1.999e+09 +3.2% 2.064e+09 +2.9% 2.057e+09 perf-stat.i.branch-instructions 0.47 -5.1% 0.44 -4.4% 0.45 perf-stat.i.cpi 9.452e+09 +5.6% 9.983e+09 +5.3% 9.951e+09 perf-stat.i.instructions 2.19 +5.8% 2.31 +5.2% 2.30 perf-stat.i.ipc 0.33 ± 3% -0.0 0.31 -0.0 0.32 perf-stat.overall.branch-miss-rate% 0.47 -5.1% 0.45 -4.4% 0.45 perf-stat.overall.cpi 2.12 +5.4% 2.23 +4.7% 2.21 perf-stat.overall.ipc 1.991e+09 +3.2% 2.056e+09 +2.9% 2.05e+09 perf-stat.ps.branch-instructions 9.417e+09 +5.6% 9.946e+09 +5.3% 9.915e+09 perf-stat.ps.instructions 2.841e+12 +5.7% 3.002e+12 +5.2% 2.988e+12 perf-stat.total.instructions 0.01 ± 42% -100.0% 0.00 -100.0% 0.00 perf-sched.sch_delay.avg.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 0.02 ± 37% -68.5% 0.01 ± 44% -57.7% 0.01 ± 63% perf-sched.sch_delay.avg.ms.__cond_resched.down_write_killable.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.02 ± 38% +31.7% 0.02 ± 21% +53.8% 0.03 ± 10% perf-sched.sch_delay.avg.ms.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown] 0.04 ± 66% -100.0% 0.00 -100.0% 0.00 perf-sched.sch_delay.max.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 0.05 ± 47% -75.3% 0.01 ± 83% -69.2% 0.01 ± 74% perf-sched.sch_delay.max.ms.__cond_resched.down_write_killable.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.01 ± 9% +33.8% 0.02 ± 18% +17.5% 0.02 ± 10% perf-sched.sch_delay.max.ms.__x64_sys_pause.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown] 0.44 ± 49% -29.7% 0.31 ± 35% +145.0% 1.09 ± 41% perf-sched.sch_delay.max.ms.pipe_read.vfs_read.ksys_read.do_syscall_64 0.08 ± 57% -69.7% 0.02 ±146% +6.7% 0.09 ± 66% perf-sched.sch_delay.max.ms.schedule_timeout.__wait_for_common.wait_for_completion_state.kernel_clone 0.10 ± 37% +45.2% 0.15 ± 8% +20.5% 0.12 ± 13% perf-sched.sch_delay.max.ms.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown] 7209 ± 3% -7.8% 6648 ± 2% -3.6% 6948 ± 3% perf-sched.total_wait_and_delay.count.ms 1533 ± 6% -10.2% 1377 -2.6% 1493 ± 7% perf-sched.wait_and_delay.count.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm 0.01 ± 42% -100.0% 0.00 -100.0% 0.00 perf-sched.wait_time.avg.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 0.02 ± 37% -68.5% 0.01 ± 44% -57.7% 0.01 ± 63% perf-sched.wait_time.avg.ms.__cond_resched.down_write_killable.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.04 ± 66% -100.0% 0.00 -100.0% 0.00 perf-sched.wait_time.max.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 0.05 ± 47% -75.3% 0.01 ± 83% -69.2% 0.01 ± 74% perf-sched.wait_time.max.ms.__cond_resched.down_write_killable.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 6.61 -6.6 0.00 -6.6 0.00 perf-profile.calltrace.cycles-pp.mas_store_prealloc.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 6.20 -6.2 0.00 -6.2 0.00 perf-profile.calltrace.cycles-pp.mas_preallocate.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 17.96 -1.1 16.87 -1.5 16.43 perf-profile.calltrace.cycles-pp.perf_event_mmap.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 16.08 -1.0 15.10 -1.3 14.78 perf-profile.calltrace.cycles-pp.perf_event_mmap_event.perf_event_mmap.do_brk_flags.__do_sys_brk.do_syscall_64 9.85 -0.8 9.02 -1.2 8.66 perf-profile.calltrace.cycles-pp.perf_event_mmap_output.perf_iterate_sb.perf_event_mmap_event.perf_event_mmap.do_brk_flags 11.56 -0.8 10.73 -1.2 10.33 ± 2% perf-profile.calltrace.cycles-pp.perf_iterate_sb.perf_event_mmap_event.perf_event_mmap.do_brk_flags.__do_sys_brk 5.32 -0.2 5.10 ± 5% -0.3 5.03 perf-profile.calltrace.cycles-pp.check_brk_limits.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 3.57 ± 2% -0.1 3.43 ± 3% -0.2 3.40 ± 3% perf-profile.calltrace.cycles-pp.thp_get_unmapped_area_vmflags.__get_unmapped_area.check_brk_limits.__do_sys_brk.do_syscall_64 4.87 -0.1 4.74 ± 4% -0.2 4.66 ± 2% perf-profile.calltrace.cycles-pp.__get_unmapped_area.check_brk_limits.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 2.76 ± 2% -0.1 2.66 ± 3% -0.2 2.58 ± 3% perf-profile.calltrace.cycles-pp.userfaultfd_unmap_complete.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 1.11 ± 15% -0.1 1.04 ± 4% -0.1 0.96 ± 5% perf-profile.calltrace.cycles-pp.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry 0.64 ± 4% +0.4 1.06 ± 2% +0.4 1.06 ± 5% perf-profile.calltrace.cycles-pp.__vm_enough_memory.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.6 0.56 ± 5% +0.6 0.56 ± 4% perf-profile.calltrace.cycles-pp.mas_wr_store_entry.mas_store_prealloc.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +0.6 0.57 ± 6% +0.5 0.47 ± 46% perf-profile.calltrace.cycles-pp.mas_wr_slot_store.mas_store_prealloc.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +0.6 0.58 ± 7% +0.6 0.58 ± 3% perf-profile.calltrace.cycles-pp.mas_next_range.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.7 0.69 ± 4% +0.7 0.71 ± 5% perf-profile.calltrace.cycles-pp.percpu_counter_add_batch.__vm_enough_memory.do_brk_flags.__do_sys_brk.do_syscall_64 0.00 +0.7 0.70 ± 6% +0.8 0.78 ± 6% perf-profile.calltrace.cycles-pp.mas_next_slot.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.7 0.73 ± 8% +0.7 0.74 ± 8% perf-profile.calltrace.cycles-pp.vma_adjust_trans_huge.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +0.7 0.74 ± 5% +0.7 0.74 ± 7% perf-profile.calltrace.cycles-pp.can_vma_merge_after.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64 0.00 +0.8 0.84 ± 2% +0.7 0.70 ± 4% perf-profile.calltrace.cycles-pp.mas_prev.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64 0.00 +0.9 0.88 ± 5% +0.9 0.86 ± 3% perf-profile.calltrace.cycles-pp.__anon_vma_interval_tree_remove.vma_prepare.vma_expand.vma_merge_new_range.do_brk_flags 78.92 +0.9 79.81 +0.5 79.46 perf-profile.calltrace.cycles-pp.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 0.00 +1.3 1.28 ± 2% +1.3 1.30 ± 5% perf-profile.calltrace.cycles-pp.mas_prev_slot.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64 0.00 +1.4 1.42 ± 3% +1.4 1.36 ± 3% perf-profile.calltrace.cycles-pp.up_write.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +1.6 1.59 ± 4% +1.6 1.64 ± 3% perf-profile.calltrace.cycles-pp.up_write.vma_complete.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +1.8 1.80 ± 4% +1.7 1.73 ± 2% perf-profile.calltrace.cycles-pp.init_multi_vma_prep.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +1.9 1.89 ± 4% +1.9 1.90 ± 5% perf-profile.calltrace.cycles-pp.mas_leaf_max_gap.mas_update_gap.mas_store_prealloc.vma_expand.vma_merge_new_range 0.00 +2.1 2.06 ± 3% +2.2 2.17 ± 2% perf-profile.calltrace.cycles-pp.down_write.vma_prepare.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +2.1 2.12 ± 2% +2.1 2.14 ± 2% perf-profile.calltrace.cycles-pp.down_write.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +2.4 2.43 ± 4% +2.4 2.40 ± 4% perf-profile.calltrace.cycles-pp.mas_update_gap.mas_store_prealloc.vma_expand.vma_merge_new_range.do_brk_flags 52.76 +2.6 55.40 +2.7 55.48 perf-profile.calltrace.cycles-pp.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 0.00 +3.0 2.98 +3.4 3.38 ± 2% perf-profile.calltrace.cycles-pp.mas_wr_store_type.mas_preallocate.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +3.1 3.11 ± 3% +3.2 3.18 ± 5% perf-profile.calltrace.cycles-pp.vma_complete.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +3.9 3.90 ± 2% +4.0 4.00 ± 2% perf-profile.calltrace.cycles-pp.vma_prepare.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +5.0 4.96 +5.4 5.39 perf-profile.calltrace.cycles-pp.mas_preallocate.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +6.0 6.04 ± 2% +6.2 6.15 perf-profile.calltrace.cycles-pp.mas_store_prealloc.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +27.5 27.47 +28.1 28.06 perf-profile.calltrace.cycles-pp.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64 0.00 +32.1 32.09 +32.7 32.73 perf-profile.calltrace.cycles-pp.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 6.44 -1.2 5.20 -0.8 5.64 perf-profile.children.cycles-pp.mas_preallocate 18.11 -1.1 16.99 -1.6 16.55 perf-profile.children.cycles-pp.perf_event_mmap 4.01 ± 2% -1.0 3.06 -0.6 3.45 ± 2% perf-profile.children.cycles-pp.mas_wr_store_type 16.54 -0.9 15.60 -1.3 15.27 perf-profile.children.cycles-pp.perf_event_mmap_event 10.02 -0.8 9.18 -1.2 8.80 perf-profile.children.cycles-pp.perf_event_mmap_output 5.61 -0.8 4.77 -0.8 4.80 ± 2% perf-profile.children.cycles-pp.up_write 11.80 -0.8 10.97 -1.2 10.57 ± 2% perf-profile.children.cycles-pp.perf_iterate_sb 1.39 -0.6 0.81 ± 3% -0.6 0.81 ± 6% perf-profile.children.cycles-pp.can_vma_merge_after 6.89 -0.5 6.38 -0.4 6.52 perf-profile.children.cycles-pp.mas_store_prealloc 3.67 ± 2% -0.3 3.41 ± 3% -0.2 3.48 ± 5% perf-profile.children.cycles-pp.vma_complete 5.55 -0.2 5.32 ± 4% -0.3 5.23 perf-profile.children.cycles-pp.check_brk_limits 2.20 ± 4% -0.2 1.97 ± 3% -0.2 1.96 ± 4% perf-profile.children.cycles-pp.mas_leaf_max_gap 2.68 ± 3% -0.2 2.47 ± 3% -0.2 2.44 ± 4% perf-profile.children.cycles-pp.mas_update_gap 5.11 -0.2 4.91 ± 4% -0.3 4.84 ± 2% perf-profile.children.cycles-pp.__get_unmapped_area 2.51 ± 3% -0.1 2.36 ± 3% -0.2 2.32 ± 2% perf-profile.children.cycles-pp.down_write_killable 0.61 ± 5% -0.1 0.49 ± 7% -0.1 0.50 ± 5% perf-profile.children.cycles-pp.may_expand_vm 3.67 -0.1 3.55 ± 3% -0.2 3.51 ± 3% perf-profile.children.cycles-pp.thp_get_unmapped_area_vmflags 1.25 ± 4% -0.1 1.14 ± 5% -0.1 1.19 ± 4% perf-profile.children.cycles-pp.syscall_exit_to_user_mode 2.85 ± 2% -0.1 2.74 ± 2% -0.2 2.66 ± 3% perf-profile.children.cycles-pp.userfaultfd_unmap_complete 0.14 ± 11% -0.1 0.08 ± 12% -0.1 0.06 ± 14% perf-profile.children.cycles-pp.arch_vma_name 0.42 -0.1 0.36 ± 4% -0.0 0.40 ± 3% perf-profile.children.cycles-pp.syscall_exit_to_user_mode_prepare 0.36 ± 6% -0.1 0.31 ± 4% -0.0 0.34 ± 11% perf-profile.children.cycles-pp.brk_test 2.39 -0.1 2.34 ± 5% -0.1 2.29 perf-profile.children.cycles-pp.arch_get_unmapped_area_topdown_vmflags 0.25 ± 5% -0.0 0.21 ± 9% -0.0 0.23 ± 13% perf-profile.children.cycles-pp.__rb_insert_augmented 1.92 ± 2% -0.0 1.89 ± 4% -0.1 1.80 ± 2% perf-profile.children.cycles-pp.init_multi_vma_prep 0.31 ± 10% -0.0 0.29 ± 10% -0.0 0.26 ± 9% perf-profile.children.cycles-pp.sched_setaffinity 0.14 ± 3% -0.0 0.14 ± 7% -0.0 0.11 ± 8% perf-profile.children.cycles-pp.intel_idle 0.08 ± 10% +0.0 0.12 ± 16% +0.0 0.10 ± 9% perf-profile.children.cycles-pp.mmap_region 0.09 ± 8% +0.0 0.12 ± 15% +0.0 0.11 ± 8% perf-profile.children.cycles-pp.do_mmap 0.10 ± 14% +0.0 0.15 ± 11% +0.0 0.14 ± 13% perf-profile.children.cycles-pp.anon_vma_interval_tree_remove 1.01 ± 5% +0.1 1.08 ± 5% +0.1 1.12 perf-profile.children.cycles-pp.rcu_all_qs 0.19 ± 5% +0.1 0.30 ± 5% +0.1 0.28 ± 8% perf-profile.children.cycles-pp.rb_next 1.27 ± 4% +0.1 1.40 ± 2% +0.1 1.37 ± 5% perf-profile.children.cycles-pp.sized_strscpy 0.42 ± 6% +0.1 0.57 ± 6% +0.2 0.63 ± 9% perf-profile.children.cycles-pp.strnlen 0.48 ± 4% +0.2 0.64 ± 5% +0.2 0.65 ± 5% perf-profile.children.cycles-pp.mas_wr_store_entry 1.80 ± 4% +0.2 2.02 ± 2% +0.2 2.00 perf-profile.children.cycles-pp.__cond_resched 0.00 +0.3 0.31 ± 12% +0.3 0.32 ± 3% perf-profile.children.cycles-pp.mas_next_setup 4.16 ± 3% +0.3 4.48 +0.5 4.64 ± 3% perf-profile.children.cycles-pp.down_write 0.40 ± 6% +0.4 0.78 ± 4% +0.4 0.79 ± 3% perf-profile.children.cycles-pp.percpu_counter_add_batch 0.48 ± 4% +0.4 0.92 ± 5% +0.4 0.90 ± 3% perf-profile.children.cycles-pp.mas_prev_setup 0.56 ± 6% +0.5 1.02 ± 4% +0.5 1.01 ± 4% perf-profile.children.cycles-pp.__anon_vma_interval_tree_remove 0.79 ± 4% +0.5 1.30 ± 3% +0.5 1.30 ± 4% perf-profile.children.cycles-pp.__vm_enough_memory 1.02 ± 2% +0.7 1.72 ± 3% +0.8 1.79 ± 4% perf-profile.children.cycles-pp.mas_next_slot 0.00 +0.7 0.70 ± 6% +0.7 0.68 ± 4% perf-profile.children.cycles-pp.mas_next_range 79.62 +0.9 80.50 +0.5 80.13 perf-profile.children.cycles-pp.__do_sys_brk 1.10 ± 3% +1.0 2.10 ± 3% +0.8 1.94 ± 3% perf-profile.children.cycles-pp.mas_prev 2.86 ± 3% +1.3 4.12 ± 3% +1.4 4.25 perf-profile.children.cycles-pp.vma_prepare 1.45 ± 4% +1.3 2.79 ± 3% +1.3 2.77 ± 3% perf-profile.children.cycles-pp.mas_prev_slot 54.06 +1.8 55.82 +1.9 55.95 perf-profile.children.cycles-pp.do_brk_flags 0.00 +28.3 28.30 +28.9 28.88 perf-profile.children.cycles-pp.vma_expand 0.00 +32.6 32.58 +33.1 33.05 perf-profile.children.cycles-pp.vma_merge_new_range 5.90 ± 2% -3.4 2.47 ± 3% -3.4 2.47 ± 2% perf-profile.self.cycles-pp.do_brk_flags 3.84 ± 2% -0.9 2.90 -0.6 3.28 ± 3% perf-profile.self.cycles-pp.mas_wr_store_type 9.85 -0.8 9.02 -1.2 8.63 perf-profile.self.cycles-pp.perf_event_mmap_output 5.26 -0.8 4.47 ± 2% -0.8 4.49 ± 2% perf-profile.self.cycles-pp.up_write 1.34 ± 2% -0.6 0.75 ± 3% -0.6 0.74 ± 5% perf-profile.self.cycles-pp.can_vma_merge_after 2.86 -0.4 2.47 ± 5% -0.2 2.70 ± 2% perf-profile.self.cycles-pp.mas_store_prealloc 2.50 ± 2% -0.3 2.22 ± 2% -0.2 2.27 ± 2% perf-profile.self.cycles-pp.mas_preallocate 5.02 ± 2% -0.2 4.79 -0.3 4.69 perf-profile.self.cycles-pp.__do_sys_brk 2.19 ± 4% -0.2 1.96 ± 3% -0.2 1.95 ± 4% perf-profile.self.cycles-pp.mas_leaf_max_gap 1.87 ± 3% -0.2 1.66 ± 4% -0.2 1.71 ± 6% perf-profile.self.cycles-pp.perf_event_mmap_event 1.52 ± 3% -0.2 1.33 ± 2% -0.3 1.24 ± 2% perf-profile.self.cycles-pp.perf_event_mmap 1.82 ± 3% -0.1 1.68 ± 4% -0.2 1.66 ± 3% perf-profile.self.cycles-pp.down_write_killable 1.84 ± 2% -0.1 1.74 ± 4% -0.2 1.67 ± 2% perf-profile.self.cycles-pp.init_multi_vma_prep 2.77 ± 2% -0.1 2.67 ± 2% -0.2 2.58 ± 3% perf-profile.self.cycles-pp.userfaultfd_unmap_complete 1.18 ± 2% -0.1 1.09 -0.1 1.11 ± 6% perf-profile.self.cycles-pp.do_syscall_64 0.92 ± 3% -0.1 0.84 ± 6% -0.1 0.82 ± 5% perf-profile.self.cycles-pp.__get_unmapped_area 2.30 -0.0 2.26 ± 5% -0.1 2.21 perf-profile.self.cycles-pp.arch_get_unmapped_area_topdown_vmflags 0.33 ± 4% -0.0 0.30 ± 5% -0.0 0.33 ± 6% perf-profile.self.cycles-pp.syscall_exit_to_user_mode_prepare 1.08 ± 2% -0.0 1.05 ± 4% -0.1 1.00 ± 2% perf-profile.self.cycles-pp.mas_find 0.14 ± 3% -0.0 0.14 ± 7% -0.0 0.11 ± 8% perf-profile.self.cycles-pp.intel_idle 0.03 ± 70% +0.1 0.08 ± 14% +0.0 0.07 ± 15% perf-profile.self.cycles-pp.anon_vma_interval_tree_remove 0.13 ± 7% +0.1 0.22 ± 10% +0.1 0.22 ± 11% perf-profile.self.cycles-pp.rb_next 0.40 ± 7% +0.1 0.50 ± 9% +0.1 0.51 ± 6% perf-profile.self.cycles-pp.mas_wr_store_entry 1.21 ± 4% +0.1 1.32 ± 2% +0.1 1.30 ± 5% perf-profile.self.cycles-pp.sized_strscpy 0.38 ± 7% +0.1 0.50 ± 7% +0.2 0.57 ± 9% perf-profile.self.cycles-pp.strnlen 0.95 ± 7% +0.1 1.10 ± 4% +0.1 1.08 perf-profile.self.cycles-pp.__cond_resched 0.63 ± 5% +0.2 0.82 ± 9% +0.2 0.83 ± 2% perf-profile.self.cycles-pp.vma_prepare 2.98 ± 2% +0.2 3.20 +0.3 3.32 ± 4% perf-profile.self.cycles-pp.down_write 0.37 ± 6% +0.2 0.60 ± 6% +0.2 0.58 ± 4% perf-profile.self.cycles-pp.__vm_enough_memory 0.00 +0.2 0.24 ± 11% +0.2 0.24 ± 5% perf-profile.self.cycles-pp.mas_next_setup 0.24 ± 6% +0.3 0.54 ± 6% +0.3 0.56 ± 4% perf-profile.self.cycles-pp.percpu_counter_add_batch 0.32 ± 4% +0.3 0.64 ± 5% +0.3 0.62 ± 3% perf-profile.self.cycles-pp.mas_prev_setup 0.38 ± 10% +0.3 0.72 ± 6% +0.3 0.73 ± 6% perf-profile.self.cycles-pp.__anon_vma_interval_tree_remove 0.00 +0.4 0.41 ± 5% +0.3 0.33 ± 9% perf-profile.self.cycles-pp.mas_next_range 0.63 ± 5% +0.5 1.17 ± 3% +0.5 1.10 ± 5% perf-profile.self.cycles-pp.mas_prev 0.87 ± 3% +0.6 1.49 ± 3% +0.7 1.61 ± 6% perf-profile.self.cycles-pp.mas_next_slot 1.37 ± 4% +1.3 2.64 ± 3% +1.3 2.62 ± 4% perf-profile.self.cycles-pp.mas_prev_slot 0.00 +1.3 1.30 +1.2 1.19 ± 4% perf-profile.self.cycles-pp.vma_merge_new_range 0.00 +3.4 3.45 ± 2% +3.4 3.43 ± 2% perf-profile.self.cycles-pp.vma_expand ========================================================================================= compiler/cpufreq_governor/kconfig/rootfs/tbox_group/test/testcase/testtime: gcc-12/performance/x86_64-rhel-8.3/debian-12-x86_64-20240206.cgz/lkp-icl-2sp9/brk_test/aim9/300s commit: fc21959f74bc11 ("mm: abstract vma_expand() to use vma_merge_struct") cacded5e42b960 ("mm: avoid using vma_merge() for new VMAs") 2e71337ac26478 ("mm: explicitly enable an expand-only merge mode for brk()") fc21959f74bc1138 cacded5e42b9609b07b22d80c10 2e71337ac2647889d3d9d76a5ce ---------------- --------------------------- --------------------------- %stddev %change %stddev %change %stddev \ | \ | \ 2667734 -5.6% 2518021 -6.2% 2503505 aim9.brk_test.ops_per_sec 196.00 +0.0% 196.00 +1038.8% 2231 ± 89% meminfo.Inactive(file) 23.94 -8.7% 21.86 ± 2% -6.0% 22.51 time.user_time 0.01 ± 47% -100.0% 0.00 -100.0% 0.00 perf-sched.sch_delay.avg.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 0.06 ± 34% -100.0% 0.00 -100.0% 0.00 perf-sched.sch_delay.max.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 0.01 ± 47% -100.0% 0.00 -100.0% 0.00 perf-sched.wait_time.avg.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 0.06 ± 34% -100.0% 0.00 -100.0% 0.00 perf-sched.wait_time.max.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 49.00 +0.0% 49.00 +1039.3% 558.24 ± 89% proc-vmstat.nr_inactive_file 49.00 +0.0% 49.00 +1039.3% 558.24 ± 89% proc-vmstat.nr_zone_inactive_file 948658 +2.3% 970280 +3.2% 978780 proc-vmstat.pgalloc_normal 792310 -1.5% 780779 -1.7% 779104 proc-vmstat.pgfault 814343 +2.4% 833987 +3.0% 839063 proc-vmstat.pgfree 1.721e+09 +3.0% 1.773e+09 +2.6% 1.765e+09 perf-stat.i.branch-instructions 0.54 -5.4% 0.52 -4.8% 0.52 perf-stat.i.cpi 7.553e+09 +6.0% 8.003e+09 +5.5% 7.968e+09 perf-stat.i.instructions 1.86 +6.1% 1.97 +5.3% 1.96 perf-stat.i.ipc 2399 -1.1% 2372 -1.3% 2367 perf-stat.i.minor-faults 2399 -1.1% 2372 -1.3% 2367 perf-stat.i.page-faults 0.36 ± 2% -0.0 0.35 +0.0 0.36 perf-stat.overall.branch-miss-rate% 0.55 -5.3% 0.52 -4.6% 0.52 perf-stat.overall.cpi 1.82 +5.6% 1.92 +4.8% 1.91 perf-stat.overall.ipc 1.715e+09 +3.0% 1.767e+09 +2.6% 1.76e+09 perf-stat.ps.branch-instructions 7.529e+09 +5.9% 7.977e+09 +5.5% 7.942e+09 perf-stat.ps.instructions 2391 -1.1% 2364 -1.3% 2359 perf-stat.ps.minor-faults 2391 -1.1% 2364 -1.3% 2359 perf-stat.ps.page-faults 2.275e+12 +5.8% 2.408e+12 +5.3% 2.395e+12 perf-stat.total.instructions 6.58 ± 2% -6.6 0.00 -6.6 0.00 perf-profile.calltrace.cycles-pp.mas_store_prealloc.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 5.76 ± 2% -5.8 0.00 -5.8 0.00 perf-profile.calltrace.cycles-pp.mas_preallocate.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 18.35 -1.3 17.10 -1.0 17.32 perf-profile.calltrace.cycles-pp.perf_event_mmap.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 15.92 -1.1 14.78 ± 2% -0.9 15.03 perf-profile.calltrace.cycles-pp.perf_event_mmap_event.perf_event_mmap.do_brk_flags.__do_sys_brk.do_syscall_64 11.03 -0.7 10.33 -0.7 10.36 perf-profile.calltrace.cycles-pp.perf_iterate_sb.perf_event_mmap_event.perf_event_mmap.do_brk_flags.__do_sys_brk 4.22 ± 3% -0.4 3.79 ± 2% -0.5 3.69 perf-profile.calltrace.cycles-pp.mas_walk.mas_find.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 8.48 -0.4 8.08 ± 2% -0.5 7.95 perf-profile.calltrace.cycles-pp.perf_event_mmap_output.perf_iterate_sb.perf_event_mmap_event.perf_event_mmap.do_brk_flags 5.32 -0.3 4.98 -0.2 5.10 ± 3% perf-profile.calltrace.cycles-pp.clear_bhb_loop.brk 5.38 ± 3% -0.3 5.06 -0.5 4.89 perf-profile.calltrace.cycles-pp.mas_find.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 1.16 ± 7% -0.3 0.86 ± 5% -0.3 0.90 ± 5% perf-profile.calltrace.cycles-pp.__vm_enough_memory.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.88 ± 14% -0.2 0.64 ± 8% -0.2 0.64 ± 4% perf-profile.calltrace.cycles-pp.security_vm_enough_memory_mm.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 5.56 -0.2 5.38 -0.2 5.34 perf-profile.calltrace.cycles-pp.check_brk_limits.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 0.74 ± 6% -0.2 0.57 ± 6% -0.1 0.62 ± 7% perf-profile.calltrace.cycles-pp.percpu_counter_add_batch.__vm_enough_memory.do_brk_flags.__do_sys_brk.do_syscall_64 5.09 -0.2 4.92 -0.2 4.90 perf-profile.calltrace.cycles-pp.__get_unmapped_area.check_brk_limits.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 3.73 -0.2 3.56 ± 2% -0.2 3.58 ± 2% perf-profile.calltrace.cycles-pp.thp_get_unmapped_area_vmflags.__get_unmapped_area.check_brk_limits.__do_sys_brk.do_syscall_64 1.25 ± 2% -0.2 1.08 ± 9% -0.1 1.13 ± 4% perf-profile.calltrace.cycles-pp.sized_strscpy.perf_event_mmap_event.perf_event_mmap.do_brk_flags.__do_sys_brk 1.98 ± 2% -0.1 1.84 ± 3% -0.1 1.88 ± 2% perf-profile.calltrace.cycles-pp.down_write_killable.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 0.55 ± 2% -0.1 0.42 ± 44% -0.1 0.46 ± 44% perf-profile.calltrace.cycles-pp.__cond_resched.down_write_killable.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.78 ± 3% -0.1 0.72 ± 4% -0.1 0.72 ± 3% perf-profile.calltrace.cycles-pp.mas_prev.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 0.00 +0.6 0.56 ± 5% +0.1 0.09 ±223% perf-profile.calltrace.cycles-pp.anon_vma_interval_tree_insert.vma_complete.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +0.6 0.64 +0.6 0.60 ± 7% perf-profile.calltrace.cycles-pp.vma_adjust_trans_huge.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +0.7 0.69 ± 8% +0.7 0.70 ± 8% perf-profile.calltrace.cycles-pp.__anon_vma_interval_tree_remove.vma_prepare.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +0.8 0.78 ± 4% +0.9 0.88 ± 5% perf-profile.calltrace.cycles-pp.mas_next_range.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.8 0.80 ± 2% +0.7 0.72 ± 3% perf-profile.calltrace.cycles-pp.mas_prev.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64 82.26 +0.8 83.07 +0.7 82.95 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.brk 0.00 +0.8 0.82 ± 4% +0.8 0.80 ± 5% perf-profile.calltrace.cycles-pp.can_vma_merge_after.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64 81.38 +0.8 82.20 +0.7 82.07 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 0.00 +0.8 0.84 ± 4% +0.8 0.80 ± 7% perf-profile.calltrace.cycles-pp.mas_wr_slot_store.mas_store_prealloc.vma_expand.vma_merge_new_range.do_brk_flags 77.94 +1.0 78.92 +0.8 78.74 perf-profile.calltrace.cycles-pp.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 0.00 +1.2 1.24 ± 3% +1.2 1.18 ± 4% perf-profile.calltrace.cycles-pp.mas_prev_slot.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64 0.00 +1.3 1.32 ± 2% +1.4 1.37 ± 3% perf-profile.calltrace.cycles-pp.mas_next_slot.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +1.4 1.38 ± 2% +1.4 1.42 ± 4% perf-profile.calltrace.cycles-pp.down_write.vma_prepare.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +1.4 1.40 ± 4% +1.4 1.38 perf-profile.calltrace.cycles-pp.up_write.vma_complete.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +1.6 1.64 +1.7 1.66 ± 3% perf-profile.calltrace.cycles-pp.up_write.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +1.8 1.82 ± 5% +1.7 1.73 ± 3% perf-profile.calltrace.cycles-pp.down_write.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +1.9 1.89 ± 3% +1.9 1.89 ± 2% perf-profile.calltrace.cycles-pp.init_multi_vma_prep.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +1.9 1.92 ± 3% +1.9 1.91 perf-profile.calltrace.cycles-pp.mas_leaf_max_gap.mas_update_gap.mas_store_prealloc.vma_expand.vma_merge_new_range 0.00 +2.3 2.31 +2.3 2.31 ± 3% perf-profile.calltrace.cycles-pp.mas_wr_store_type.mas_preallocate.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +2.7 2.68 ± 2% +2.6 2.62 perf-profile.calltrace.cycles-pp.mas_update_gap.mas_store_prealloc.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +2.9 2.92 ± 4% +2.8 2.81 perf-profile.calltrace.cycles-pp.vma_complete.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +2.9 2.93 ± 2% +2.9 2.94 ± 3% perf-profile.calltrace.cycles-pp.vma_prepare.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 53.19 +3.0 56.14 +2.6 55.83 perf-profile.calltrace.cycles-pp.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 0.00 +4.4 4.42 +4.4 4.40 perf-profile.calltrace.cycles-pp.mas_preallocate.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +7.1 7.09 +7.0 6.95 perf-profile.calltrace.cycles-pp.mas_store_prealloc.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +26.8 26.83 +26.3 26.31 perf-profile.calltrace.cycles-pp.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64 0.00 +31.4 31.41 +30.8 30.83 perf-profile.calltrace.cycles-pp.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 5.93 -1.3 4.62 -1.3 4.60 perf-profile.children.cycles-pp.mas_preallocate 18.48 -1.3 17.23 -1.0 17.46 perf-profile.children.cycles-pp.perf_event_mmap 16.41 -1.2 15.23 -0.9 15.47 perf-profile.children.cycles-pp.perf_event_mmap_event 3.46 -1.1 2.37 -1.1 2.38 ± 3% perf-profile.children.cycles-pp.mas_wr_store_type 11.24 -0.7 10.52 ± 2% -0.7 10.56 perf-profile.children.cycles-pp.perf_iterate_sb 4.29 ± 3% -0.4 3.86 ± 2% -0.5 3.76 perf-profile.children.cycles-pp.mas_walk 8.61 -0.4 8.21 ± 2% -0.5 8.07 perf-profile.children.cycles-pp.perf_event_mmap_output 0.83 ± 7% -0.4 0.47 ± 8% -0.4 0.45 ± 10% perf-profile.children.cycles-pp.may_expand_vm 3.82 -0.3 3.48 ± 3% -0.4 3.41 perf-profile.children.cycles-pp.down_write 5.39 -0.3 5.06 -0.2 5.18 ± 3% perf-profile.children.cycles-pp.clear_bhb_loop 1.36 ± 5% -0.3 1.03 ± 5% -0.3 1.08 ± 4% perf-profile.children.cycles-pp.__vm_enough_memory 5.64 ± 3% -0.3 5.32 -0.5 5.13 perf-profile.children.cycles-pp.mas_find 1.18 ± 5% -0.3 0.88 ± 4% -0.3 0.87 ± 3% perf-profile.children.cycles-pp.can_vma_merge_after 0.57 ± 22% -0.2 0.33 ± 12% -0.2 0.36 ± 7% perf-profile.children.cycles-pp.cap_vm_enough_memory 1.06 ± 11% -0.2 0.83 ± 9% -0.2 0.82 ± 5% perf-profile.children.cycles-pp.security_vm_enough_memory_mm 5.30 -0.2 5.11 -0.2 5.10 perf-profile.children.cycles-pp.__get_unmapped_area 5.75 -0.2 5.56 -0.2 5.52 perf-profile.children.cycles-pp.check_brk_limits 0.82 ± 4% -0.2 0.64 ± 4% -0.1 0.70 ± 7% perf-profile.children.cycles-pp.percpu_counter_add_batch 3.86 -0.2 3.69 ± 2% -0.1 3.71 ± 2% perf-profile.children.cycles-pp.thp_get_unmapped_area_vmflags 1.32 ± 2% -0.2 1.16 ± 8% -0.1 1.20 ± 3% perf-profile.children.cycles-pp.sized_strscpy 2.10 ± 2% -0.1 1.96 ± 2% -0.1 2.00 ± 3% perf-profile.children.cycles-pp.down_write_killable 1.86 ± 3% -0.1 1.74 ± 2% -0.1 1.80 ± 4% perf-profile.children.cycles-pp.__cond_resched 0.57 ± 7% -0.1 0.45 ± 13% -0.1 0.46 ± 2% perf-profile.children.cycles-pp.strlen 2.78 -0.1 2.66 ± 2% -0.1 2.64 ± 2% perf-profile.children.cycles-pp.arch_get_unmapped_area_topdown_vmflags 0.10 ± 13% +0.0 0.11 ± 16% +0.0 0.12 ± 11% perf-profile.children.cycles-pp.vfs_read 0.10 ± 11% +0.0 0.12 ± 13% +0.0 0.14 ± 8% perf-profile.children.cycles-pp.read 0.70 ± 2% +0.1 0.81 ± 6% +0.1 0.82 ± 7% perf-profile.children.cycles-pp.__anon_vma_interval_tree_remove 0.68 ± 9% +0.2 0.90 ± 3% +0.2 0.86 ± 6% perf-profile.children.cycles-pp.mas_wr_slot_store 0.34 ± 5% +0.3 0.68 ± 6% +0.3 0.68 ± 4% perf-profile.children.cycles-pp.mas_prev_setup 0.00 +0.4 0.43 ± 2% +0.4 0.41 ± 7% perf-profile.children.cycles-pp.mas_next_setup 6.91 ± 2% +0.5 7.37 +0.4 7.26 perf-profile.children.cycles-pp.mas_store_prealloc 0.92 ± 3% +0.8 1.76 ± 3% +0.8 1.69 ± 2% perf-profile.children.cycles-pp.mas_prev 83.20 +0.9 84.05 +0.7 83.90 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 82.36 +0.9 83.23 +0.7 83.08 perf-profile.children.cycles-pp.do_syscall_64 78.68 +0.9 79.62 +0.8 79.46 perf-profile.children.cycles-pp.__do_sys_brk 0.00 +0.9 0.94 ± 3% +1.1 1.05 ± 5% perf-profile.children.cycles-pp.mas_next_range 1.35 ± 5% +1.2 2.59 ± 3% +1.2 2.52 perf-profile.children.cycles-pp.mas_prev_slot 0.84 ± 3% +1.4 2.26 ± 3% +1.4 2.27 ± 2% perf-profile.children.cycles-pp.mas_next_slot 54.26 +2.3 56.54 +2.0 56.30 perf-profile.children.cycles-pp.do_brk_flags 0.00 +27.5 27.55 +27.0 27.00 perf-profile.children.cycles-pp.vma_expand 0.00 +31.9 31.86 +31.1 31.13 perf-profile.children.cycles-pp.vma_merge_new_range 6.50 -3.3 3.19 ± 2% -3.1 3.35 perf-profile.self.cycles-pp.do_brk_flags 3.35 -1.1 2.25 -1.1 2.25 ± 2% perf-profile.self.cycles-pp.mas_wr_store_type 5.31 ± 2% -0.4 4.88 -0.2 5.14 ± 2% perf-profile.self.cycles-pp.__do_sys_brk 4.22 ± 3% -0.4 3.80 ± 2% -0.5 3.70 perf-profile.self.cycles-pp.mas_walk 8.47 -0.4 8.07 ± 2% -0.5 7.94 perf-profile.self.cycles-pp.perf_event_mmap_output 0.71 ± 8% -0.3 0.38 ± 8% -0.3 0.36 ± 12% perf-profile.self.cycles-pp.may_expand_vm 5.32 -0.3 5.00 -0.2 5.11 ± 3% perf-profile.self.cycles-pp.clear_bhb_loop 1.12 ± 5% -0.3 0.82 ± 4% -0.3 0.80 ± 5% perf-profile.self.cycles-pp.can_vma_merge_after 2.62 -0.2 2.38 ± 5% -0.3 2.32 ± 3% perf-profile.self.cycles-pp.down_write 0.44 ± 28% -0.2 0.20 ± 13% -0.2 0.24 ± 7% perf-profile.self.cycles-pp.cap_vm_enough_memory 2.50 ± 3% -0.2 2.31 ± 2% -0.2 2.28 perf-profile.self.cycles-pp.mas_preallocate 0.61 ± 9% -0.2 0.42 ± 7% -0.2 0.42 ± 6% perf-profile.self.cycles-pp.__vm_enough_memory 1.26 ± 2% -0.2 1.09 ± 9% -0.1 1.14 ± 3% perf-profile.self.cycles-pp.sized_strscpy 0.57 ± 5% -0.1 0.44 ± 4% -0.1 0.47 ± 8% perf-profile.self.cycles-pp.percpu_counter_add_batch 2.25 ± 3% -0.1 2.13 ± 3% -0.0 2.25 ± 2% perf-profile.self.cycles-pp.perf_event_mmap_event 2.70 -0.1 2.60 ± 2% -0.1 2.58 ± 2% perf-profile.self.cycles-pp.arch_get_unmapped_area_topdown_vmflags 0.50 ± 8% -0.1 0.40 ± 12% -0.1 0.41 ± 2% perf-profile.self.cycles-pp.strlen 0.57 ± 4% -0.1 0.52 ± 4% -0.0 0.55 ± 4% perf-profile.self.cycles-pp.strnlen 1.40 ± 3% -0.0 1.34 ± 2% -0.1 1.33 ± 2% perf-profile.self.cycles-pp.down_write_killable 0.01 ±223% +0.1 0.06 ± 15% +0.0 0.05 ± 48% perf-profile.self.cycles-pp.anon_vma_interval_tree_remove 0.51 ± 4% +0.1 0.60 ± 5% +0.1 0.60 ± 7% perf-profile.self.cycles-pp.__anon_vma_interval_tree_remove 2.87 ± 2% +0.2 3.10 ± 2% +0.2 3.09 ± 2% perf-profile.self.cycles-pp.mas_store_prealloc 0.61 ± 8% +0.2 0.84 ± 4% +0.2 0.81 ± 7% perf-profile.self.cycles-pp.mas_wr_slot_store 0.26 ± 7% +0.3 0.56 ± 5% +0.3 0.56 ± 7% perf-profile.self.cycles-pp.mas_prev_setup 0.00 +0.3 0.33 ± 3% +0.3 0.31 ± 10% perf-profile.self.cycles-pp.mas_next_setup 0.53 ± 6% +0.4 0.98 ± 3% +0.4 0.94 ± 7% perf-profile.self.cycles-pp.mas_prev 0.00 +0.6 0.56 ± 5% +0.6 0.62 ± 5% perf-profile.self.cycles-pp.mas_next_range 1.29 ± 4% +1.2 2.46 ± 3% +1.1 2.39 perf-profile.self.cycles-pp.mas_prev_slot 0.72 ± 4% +1.4 2.07 ± 3% +1.4 2.09 perf-profile.self.cycles-pp.mas_next_slot 0.00 +1.4 1.40 ± 4% +1.2 1.24 ± 5% perf-profile.self.cycles-pp.vma_merge_new_range 0.00 +3.6 3.55 ± 6% +3.4 3.42 ± 2% perf-profile.self.cycles-pp.vma_expand ========================================================================================= compiler/cpufreq_governor/kconfig/rootfs/tbox_group/test/testcase/testtime: gcc-12/performance/x86_64-rhel-8.3/debian-12-x86_64-20240206.cgz/lkp-ivb-2ep2/brk_test/aim9/300s commit: fc21959f74bc11 ("mm: abstract vma_expand() to use vma_merge_struct") cacded5e42b960 ("mm: avoid using vma_merge() for new VMAs") 2e71337ac26478 ("mm: explicitly enable an expand-only merge mode for brk()") fc21959f74bc1138 cacded5e42b9609b07b22d80c10 2e71337ac2647889d3d9d76a5ce ---------------- --------------------------- --------------------------- %stddev %change %stddev %change %stddev \ | \ | \ 201.54 +2.9% 207.44 +2.5% 206.52 time.system_time 97.58 -6.0% 91.75 -5.0% 92.66 time.user_time 1322908 -5.0% 1256536 -4.1% 1268145 aim9.brk_test.ops_per_sec 201.54 +2.9% 207.44 +2.5% 206.52 aim9.time.system_time 97.58 -6.0% 91.75 -5.0% 92.66 aim9.time.user_time 0.04 ± 82% -100.0% 0.00 -100.0% 0.00 perf-sched.sch_delay.avg.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 0.10 ± 60% -100.0% 0.00 -100.0% 0.00 perf-sched.sch_delay.max.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 90.66 ± 71% +411.1% 463.37 ±113% +160.5% 236.20 ± 12% perf-sched.wait_and_delay.avg.ms.schedule_timeout.io_schedule_timeout.__wait_for_common.blk_execute_rq 127.98 ± 86% +586.2% 878.13 ±150% +192.6% 374.47 ± 56% perf-sched.wait_and_delay.max.ms.schedule_timeout.io_schedule_timeout.__wait_for_common.blk_execute_rq 0.04 ± 82% -100.0% 0.00 -100.0% 0.00 perf-sched.wait_time.avg.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 111.98 ± 31% +323.3% 474.03 ±108% +110.6% 235.86 ± 12% perf-sched.wait_time.avg.ms.schedule_timeout.io_schedule_timeout.__wait_for_common.blk_execute_rq 0.10 ± 60% -100.0% 0.00 -100.0% 0.00 perf-sched.wait_time.max.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 149.30 ± 58% +495.3% 888.79 ±147% +150.4% 373.80 ± 57% perf-sched.wait_time.max.ms.schedule_timeout.io_schedule_timeout.__wait_for_common.blk_execute_rq 0.30 ± 2% -9.0% 0.27 ± 4% -11.5% 0.27 ± 7% perf-stat.i.MPKI 8.33e+08 +3.9% 8.654e+08 +4.5% 8.708e+08 perf-stat.i.branch-instructions 1.15 -0.1 1.09 -0.1 1.08 perf-stat.i.branch-miss-rate% 12964626 -1.9% 12711922 -2.6% 12624576 perf-stat.i.branch-misses 1.11 -7.4% 1.03 -7.9% 1.03 perf-stat.i.cpi 3.943e+09 +6.0% 4.18e+09 +6.7% 4.206e+09 perf-stat.i.instructions 0.91 +7.9% 0.98 +8.5% 0.99 perf-stat.i.ipc 0.29 ± 2% -9.1% 0.27 ± 4% -10.8% 0.26 ± 7% perf-stat.overall.MPKI 1.56 -0.1 1.47 -0.1 1.45 perf-stat.overall.branch-miss-rate% 1.08 -6.8% 1.01 -7.2% 1.01 perf-stat.overall.cpi 0.92 +7.2% 0.99 +7.8% 0.99 perf-stat.overall.ipc 8.303e+08 +3.9% 8.627e+08 +4.5% 8.681e+08 perf-stat.ps.branch-instructions 12931205 -2.0% 12678170 -2.6% 12593410 perf-stat.ps.branch-misses 3.93e+09 +6.0% 4.167e+09 +6.7% 4.193e+09 perf-stat.ps.instructions 1.184e+12 +6.1% 1.256e+12 +6.7% 1.263e+12 perf-stat.total.instructions 7.16 ± 2% -0.4 6.76 ± 4% -0.3 6.83 ± 5% perf-profile.calltrace.cycles-pp.entry_SYSRETQ_unsafe_stack.brk 5.72 ± 2% -0.4 5.35 ± 3% -0.2 5.53 ± 4% perf-profile.calltrace.cycles-pp.perf_event_mmap_event.perf_event_mmap.do_brk_flags.__do_sys_brk.do_syscall_64 6.13 ± 2% -0.3 5.84 ± 3% -0.2 5.97 ± 4% perf-profile.calltrace.cycles-pp.perf_event_mmap.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.83 ± 11% -0.1 0.71 ± 5% -0.1 0.76 ± 5% perf-profile.calltrace.cycles-pp.__vm_enough_memory.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.6 0.58 ± 5% +0.6 0.57 ± 8% perf-profile.calltrace.cycles-pp.mas_leaf_max_gap.mas_update_gap.mas_store_prealloc.vma_expand.vma_merge_new_range 16.73 ± 2% +0.6 17.34 +0.5 17.27 ± 4% perf-profile.calltrace.cycles-pp.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 0.00 +0.7 0.66 ± 6% +0.6 0.61 ± 45% perf-profile.calltrace.cycles-pp.mas_wr_store_type.mas_preallocate.vma_expand.vma_merge_new_range.do_brk_flags 24.21 +0.7 24.90 +0.5 24.71 ± 2% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 23.33 +0.7 24.05 ± 2% +0.5 23.87 ± 3% perf-profile.calltrace.cycles-pp.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 0.00 +0.8 0.82 ± 4% +0.9 0.92 ± 11% perf-profile.calltrace.cycles-pp.vma_complete.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +0.9 0.87 ± 5% +0.9 0.86 ± 6% perf-profile.calltrace.cycles-pp.mas_update_gap.mas_store_prealloc.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +1.1 1.07 ± 9% +1.0 1.01 ± 14% perf-profile.calltrace.cycles-pp.vma_prepare.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +1.1 1.10 ± 6% +1.2 1.15 ± 10% perf-profile.calltrace.cycles-pp.mas_preallocate.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +2.3 2.26 ± 5% +2.2 2.19 ± 5% perf-profile.calltrace.cycles-pp.mas_store_prealloc.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +7.6 7.56 ± 3% +7.5 7.48 ± 4% perf-profile.calltrace.cycles-pp.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64 0.00 +8.6 8.62 ± 4% +8.4 8.40 ± 4% perf-profile.calltrace.cycles-pp.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 7.74 ± 2% -0.4 7.30 ± 4% -0.4 7.38 ± 5% perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack 5.81 ± 2% -0.4 5.43 ± 3% -0.2 5.60 ± 4% perf-profile.children.cycles-pp.perf_event_mmap_event 6.18 ± 2% -0.3 5.88 ± 3% -0.2 6.00 ± 4% perf-profile.children.cycles-pp.perf_event_mmap 3.93 -0.2 3.73 ± 3% -0.1 3.81 ± 4% perf-profile.children.cycles-pp.perf_iterate_sb 0.22 ± 29% -0.1 0.08 ± 17% -0.1 0.09 ± 42% perf-profile.children.cycles-pp.may_expand_vm 0.96 ± 3% -0.1 0.83 ± 4% -0.0 0.93 ± 11% perf-profile.children.cycles-pp.vma_complete 0.61 ± 14% -0.1 0.52 ± 7% -0.0 0.57 ± 9% perf-profile.children.cycles-pp.percpu_counter_add_batch 0.15 ± 7% -0.1 0.08 ± 20% -0.1 0.08 ± 25% perf-profile.children.cycles-pp.brk_test 0.10 ± 11% +0.0 0.10 ± 28% +0.0 0.12 ± 10% perf-profile.children.cycles-pp.run_posix_cpu_timers 0.08 ± 11% +0.0 0.12 ± 14% +0.0 0.12 ± 12% perf-profile.children.cycles-pp.mas_prev_setup 0.00 +0.0 0.05 ± 46% +0.1 0.08 ± 16% perf-profile.children.cycles-pp.mas_next_setup 0.24 ± 19% +0.1 0.31 ± 9% +0.1 0.32 ± 9% perf-profile.children.cycles-pp.mas_prev 0.17 ± 12% +0.1 0.27 ± 10% +0.0 0.19 ± 16% perf-profile.children.cycles-pp.mas_wr_store_entry 0.00 +0.2 0.15 ± 11% +0.2 0.17 ± 8% perf-profile.children.cycles-pp.mas_next_range 0.19 ± 8% +0.2 0.38 ± 10% +0.2 0.41 ± 8% perf-profile.children.cycles-pp.mas_next_slot 0.34 ± 17% +0.3 0.64 ± 6% +0.3 0.61 ± 6% perf-profile.children.cycles-pp.mas_prev_slot 23.40 +0.7 24.12 ± 2% +0.5 23.94 ± 3% perf-profile.children.cycles-pp.__do_sys_brk 0.00 +7.6 7.59 ± 3% +7.5 7.49 ± 4% perf-profile.children.cycles-pp.vma_expand 0.00 +8.7 8.66 ± 4% +8.5 8.46 ± 4% perf-profile.children.cycles-pp.vma_merge_new_range 1.61 ± 10% -0.9 0.69 ± 8% -0.8 0.83 ± 14% perf-profile.self.cycles-pp.do_brk_flags 7.64 ± 2% -0.4 7.20 ± 4% -0.4 7.28 ± 5% perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack 0.22 ± 30% -0.1 0.08 ± 17% -0.1 0.09 ± 42% perf-profile.self.cycles-pp.may_expand_vm 0.57 ± 15% -0.1 0.46 ± 6% -0.0 0.53 ± 10% perf-profile.self.cycles-pp.percpu_counter_add_batch 0.77 ± 7% -0.1 0.69 ± 5% -0.1 0.69 ± 5% perf-profile.self.cycles-pp.perf_event_mmap_event 0.15 ± 7% -0.1 0.08 ± 20% -0.1 0.08 ± 24% perf-profile.self.cycles-pp.brk_test 0.20 ± 5% -0.0 0.18 ± 4% +0.0 0.20 ± 9% perf-profile.self.cycles-pp.anon_vma_interval_tree_insert 0.10 ± 11% +0.0 0.10 ± 28% +0.0 0.12 ± 10% perf-profile.self.cycles-pp.run_posix_cpu_timers 0.07 ± 18% +0.0 0.10 ± 18% +0.0 0.11 ± 11% perf-profile.self.cycles-pp.mas_prev_setup 0.00 +0.1 0.09 ± 12% +0.1 0.11 ± 9% perf-profile.self.cycles-pp.mas_next_range 0.36 ± 8% +0.1 0.45 ± 6% +0.0 0.40 ± 11% perf-profile.self.cycles-pp.perf_event_mmap 0.15 ± 13% +0.1 0.25 ± 14% +0.0 0.17 ± 16% perf-profile.self.cycles-pp.mas_wr_store_entry 0.17 ± 11% +0.2 0.37 ± 11% +0.2 0.40 ± 9% perf-profile.self.cycles-pp.mas_next_slot 0.34 ± 17% +0.3 0.64 ± 6% +0.3 0.61 ± 6% perf-profile.self.cycles-pp.mas_prev_slot 0.00 +0.3 0.33 ± 5% +0.3 0.30 ± 7% perf-profile.self.cycles-pp.vma_merge_new_range 0.00 +0.8 0.81 ± 9% +0.7 0.74 ± 9% perf-profile.self.cycles-pp.vma_expand