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 hxD33DZc 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, kernel test robot noticed a 6.3% regression of will-it-scale.per_process_ops on: commit: 298cdbf5f7c9e19289f46710ed5ab3da4e711150 ("mm, slab: add an optimistic __slab_try_return_freelist()") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master [still regression on linux-next/master 4cd074ae20bbcc293bbbce9163abe99d68ae6ae0] testcase: will-it-scale config: x86_64-rhel-9.4 compiler: gcc-14 test machine: 192 threads 2 sockets Intel(R) Xeon(R) 6740E CPU @ 2.4GHz (Sierra Forest) with 256G memory parameters: nr_task: 100% mode: process test: mmap1 cpufreq_governor: performance If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-lkp/202605112204.9382cecf-lkp@intel.com Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260511/202605112204.9382cecf-lkp@intel.com ========================================================================================= compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase: gcc-14/performance/x86_64-rhel-9.4/process/100%/debian-13-x86_64-20250902.cgz/lkp-srf-2sp2/mmap1/will-it-scale commit: 1f7c8e1d52 ("mm/slub: defer freelist construction until after bulk allocation from a new slab") 298cdbf5f7 ("mm, slab: add an optimistic __slab_try_return_freelist()") 1f7c8e1d52428cbf 298cdbf5f7c9e19289f46710ed5 ---------------- --------------------------- %stddev %change %stddev \ | \ 35417967 -6.3% 33202379 will-it-scale.192.processes 184468 -6.3% 172928 will-it-scale.per_process_ops 35417967 -6.3% 33202379 will-it-scale.workload 21873 ± 2% +8.0% 23628 vmstat.system.cs 3957 ± 19% -64.8% 1392 ± 13% perf-c2c.DRAM.local 1016 ± 20% -46.9% 540.33 ± 34% perf-c2c.DRAM.remote 0.71 -5.6% 0.67 turbostat.IPC 430.37 -1.2% 425.33 turbostat.PkgWatt 0.13 -0.0 0.12 mpstat.cpu.all.irq% 18.38 +1.4 19.79 mpstat.cpu.all.soft% 1.64 -0.1 1.54 mpstat.cpu.all.usr% 7.06 ± 14% +26.0% 8.89 ± 12% sched_debug.cfs_rq:/.load_avg.min 18788 ± 2% +7.2% 20147 sched_debug.cpu.nr_switches.avg 16273 ± 3% +7.6% 17503 sched_debug.cpu.nr_switches.min 3418653 +97.9% 6765264 numa-numastat.node0.local_node 3479092 +96.6% 6839697 numa-numastat.node0.numa_hit 4424809 ± 2% +79.1% 7922798 ± 2% numa-numastat.node1.local_node 4564748 ± 2% +76.3% 8048580 ± 2% numa-numastat.node1.numa_hit 3478940 +96.6% 6839185 numa-vmstat.node0.numa_hit 3418501 +97.9% 6764752 numa-vmstat.node0.numa_local 4565277 ± 2% +76.3% 8048347 ± 2% numa-vmstat.node1.numa_hit 4425338 ± 2% +79.0% 7922564 ± 2% numa-vmstat.node1.numa_local 189874 -2.4% 185345 proc-vmstat.nr_slab_unreclaimable 8051058 +85.0% 14892463 proc-vmstat.numa_hit 7850680 +87.1% 14692248 proc-vmstat.numa_local 25073981 +109.6% 52554060 proc-vmstat.pgalloc_normal 23597828 +116.6% 51111380 proc-vmstat.pgfree 0.20 +8.9% 0.22 ± 2% perf-sched.sch_delay.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 0.20 +8.9% 0.22 ± 2% perf-sched.total_sch_delay.average.ms 26.54 ± 2% -12.1% 23.32 ± 2% perf-sched.total_wait_and_delay.average.ms 108336 ± 3% +9.0% 118099 perf-sched.total_wait_and_delay.count.ms 26.34 ± 2% -12.3% 23.11 ± 2% perf-sched.total_wait_time.average.ms 26.54 ± 2% -12.1% 23.32 ± 2% perf-sched.wait_and_delay.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 108336 ± 3% +9.0% 118099 perf-sched.wait_and_delay.count.[unknown].[unknown].[unknown].[unknown].[unknown] 26.34 ± 2% -12.3% 23.11 ± 2% perf-sched.wait_time.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 9.213e+10 -5.7% 8.687e+10 perf-stat.i.branch-instructions 1.098e+08 -6.7% 1.025e+08 perf-stat.i.branch-misses 14.49 ± 2% -1.4 13.11 ± 4% perf-stat.i.cache-miss-rate% 1.059e+08 ± 2% -12.9% 92245846 ± 5% perf-stat.i.cache-misses 7.389e+08 -3.6% 7.123e+08 perf-stat.i.cache-references 21981 ± 2% +7.8% 23693 perf-stat.i.context-switches 1.40 +6.2% 1.49 perf-stat.i.cpi 256.41 +3.0% 263.99 perf-stat.i.cpu-migrations 5815 ± 2% +15.3% 6707 ± 4% perf-stat.i.cycles-between-cache-misses 4.341e+11 -5.8% 4.089e+11 perf-stat.i.instructions 0.71 -5.8% 0.67 perf-stat.i.ipc 14.34 ± 2% -1.4 12.97 ± 4% perf-stat.overall.cache-miss-rate% 1.41 +6.2% 1.49 perf-stat.overall.cpi 5764 ± 2% +15.0% 6626 ± 4% perf-stat.overall.cycles-between-cache-misses 0.71 -5.9% 0.67 perf-stat.overall.ipc 9.183e+10 -5.7% 8.659e+10 perf-stat.ps.branch-instructions 1.095e+08 -6.7% 1.021e+08 perf-stat.ps.branch-misses 1.056e+08 ± 2% -12.8% 92081686 ± 5% perf-stat.ps.cache-misses 7.367e+08 -3.6% 7.102e+08 perf-stat.ps.cache-references 21840 ± 2% +8.1% 23604 perf-stat.ps.context-switches 253.30 +3.0% 260.93 perf-stat.ps.cpu-migrations 4.327e+11 -5.8% 4.076e+11 perf-stat.ps.instructions 1.312e+14 -5.9% 1.235e+14 perf-stat.total.instructions 12.77 -12.8 0.00 perf-profile.calltrace.cycles-pp.__slab_free.__refill_objects_node.refill_objects.__pcs_replace_empty_main.kmem_cache_alloc_noprof 12.68 -12.7 0.00 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.__slab_free.__refill_objects_node.refill_objects.__pcs_replace_empty_main 12.60 -12.6 0.00 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.__slab_free.__refill_objects_node.refill_objects 4.81 -0.5 4.28 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.barn_replace_empty_sheaf.__pcs_replace_empty_main.kmem_cache_alloc_noprof 2.52 -0.4 2.09 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.barn_get_empty_sheaf.__pcs_replace_empty_main.kmem_cache_alloc_noprof 7.46 -0.4 7.06 perf-profile.calltrace.cycles-pp.vms_complete_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap 5.21 ± 2% -0.4 4.86 perf-profile.calltrace.cycles-pp.mas_wr_node_store.mas_store_gfp.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap 3.50 -0.3 3.19 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.barn_get_empty_sheaf.__kfree_rcu_sheaf.kvfree_call_rcu.mas_wr_node_store 3.47 -0.3 3.16 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.barn_get_empty_sheaf.__kfree_rcu_sheaf.kvfree_call_rcu 5.90 -0.3 5.60 perf-profile.calltrace.cycles-pp.unmap_region.vms_complete_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap 1.96 -0.3 1.70 perf-profile.calltrace.cycles-pp.barn_put_full_sheaf.rcu_do_batch.rcu_core.handle_softirqs.__irq_exit_rcu 2.43 ± 4% -0.3 2.17 ± 4% perf-profile.calltrace.cycles-pp.__kfree_rcu_sheaf.kvfree_call_rcu.mas_wr_node_store.mas_store_gfp.do_vmi_align_munmap 2.25 ± 4% -0.2 2.00 ± 4% perf-profile.calltrace.cycles-pp.barn_get_empty_sheaf.__kfree_rcu_sheaf.kvfree_call_rcu.mas_wr_node_store.mas_store_gfp 1.27 ± 10% -0.2 1.03 ± 6% perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.barn_get_empty_sheaf.__pcs_replace_empty_main.kmem_cache_alloc_noprof.mas_preallocate 2.66 ± 4% -0.2 2.44 ± 3% perf-profile.calltrace.cycles-pp.kvfree_call_rcu.mas_wr_node_store.mas_store_gfp.do_vmi_align_munmap.do_vmi_munmap 5.57 ± 2% -0.2 5.37 perf-profile.calltrace.cycles-pp.mas_store_prealloc.__mmap_new_vma.__mmap_region.do_mmap.vm_mmap_pgoff 1.46 ± 8% -0.2 1.27 ± 4% perf-profile.calltrace.cycles-pp.barn_get_empty_sheaf.__pcs_replace_empty_main.kmem_cache_alloc_noprof.mas_store_gfp.do_vmi_align_munmap 1.27 ± 8% -0.2 1.08 ± 5% perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.barn_get_empty_sheaf.__pcs_replace_empty_main.kmem_cache_alloc_noprof.mas_store_gfp 5.06 ± 2% -0.2 4.88 perf-profile.calltrace.cycles-pp.mas_wr_node_store.mas_store_prealloc.__mmap_new_vma.__mmap_region.do_mmap 2.48 -0.2 2.32 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.barn_put_full_sheaf.rcu_do_batch.rcu_core.handle_softirqs 2.51 -0.2 2.36 perf-profile.calltrace.cycles-pp.free_pgtables.unmap_region.vms_complete_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap 2.00 -0.1 1.86 perf-profile.calltrace.cycles-pp.__get_unmapped_area.do_mmap.vm_mmap_pgoff.do_syscall_64.entry_SYSCALL_64_after_hwframe 2.24 -0.1 2.11 perf-profile.calltrace.cycles-pp.vms_gather_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap 2.89 -0.1 2.76 perf-profile.calltrace.cycles-pp.unmap_vmas.unmap_region.vms_complete_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap 2.26 -0.1 2.12 perf-profile.calltrace.cycles-pp.free_pgd_range.free_pgtables.unmap_region.vms_complete_munmap_vmas.do_vmi_align_munmap 2.56 -0.1 2.43 perf-profile.calltrace.cycles-pp.zap_pmd_range.__zap_vma_range.unmap_vmas.unmap_region.vms_complete_munmap_vmas 2.13 -0.1 2.01 perf-profile.calltrace.cycles-pp.free_p4d_range.free_pgd_range.free_pgtables.unmap_region.vms_complete_munmap_vmas 2.00 -0.1 1.88 perf-profile.calltrace.cycles-pp.free_pud_range.free_p4d_range.free_pgd_range.free_pgtables.unmap_region 2.74 -0.1 2.62 perf-profile.calltrace.cycles-pp.__zap_vma_range.unmap_vmas.unmap_region.vms_complete_munmap_vmas.do_vmi_align_munmap 1.94 -0.1 1.82 perf-profile.calltrace.cycles-pp.thp_get_unmapped_area_vmflags.__get_unmapped_area.do_mmap.vm_mmap_pgoff.do_syscall_64 1.67 -0.1 1.58 perf-profile.calltrace.cycles-pp.arch_get_unmapped_area_topdown.thp_get_unmapped_area_vmflags.__get_unmapped_area.do_mmap.vm_mmap_pgoff 1.44 -0.1 1.36 perf-profile.calltrace.cycles-pp.__pi_memcpy.mas_wr_node_store.mas_store_gfp.do_vmi_align_munmap.do_vmi_munmap 1.50 -0.1 1.42 perf-profile.calltrace.cycles-pp.__pi_memcpy.mas_wr_node_store.mas_store_prealloc.__mmap_new_vma.__mmap_region 1.35 -0.1 1.28 perf-profile.calltrace.cycles-pp.unmapped_area_topdown.vm_unmapped_area.arch_get_unmapped_area_topdown.thp_get_unmapped_area_vmflags.__get_unmapped_area 1.38 -0.1 1.30 perf-profile.calltrace.cycles-pp.vm_unmapped_area.arch_get_unmapped_area_topdown.thp_get_unmapped_area_vmflags.__get_unmapped_area.do_mmap 1.58 -0.1 1.52 perf-profile.calltrace.cycles-pp.__mmap_complete.__mmap_region.do_mmap.vm_mmap_pgoff.do_syscall_64 1.44 -0.1 1.39 perf-profile.calltrace.cycles-pp.perf_event_mmap.__mmap_complete.__mmap_region.do_mmap.vm_mmap_pgoff 0.62 -0.0 0.57 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.__munmap 0.61 -0.0 0.57 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.__mmap 1.06 -0.0 1.03 perf-profile.calltrace.cycles-pp.perf_event_mmap_event.perf_event_mmap.__mmap_complete.__mmap_region.do_mmap 0.62 -0.0 0.59 perf-profile.calltrace.cycles-pp.mas_empty_area_rev.unmapped_area_topdown.vm_unmapped_area.arch_get_unmapped_area_topdown.thp_get_unmapped_area_vmflags 0.64 -0.0 0.62 ± 2% perf-profile.calltrace.cycles-pp.kmem_cache_free.vms_complete_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap 0.64 -0.0 0.62 perf-profile.calltrace.cycles-pp.perf_iterate_sb.perf_event_mmap_event.perf_event_mmap.__mmap_complete.__mmap_region 0.88 +0.1 0.98 perf-profile.calltrace.cycles-pp.vm_area_alloc.__mmap_new_vma.__mmap_region.do_mmap.vm_mmap_pgoff 0.55 ± 5% +0.1 0.66 ± 2% perf-profile.calltrace.cycles-pp.barn_put_full_sheaf.rcu_do_batch.rcu_core.handle_softirqs.run_ksoftirqd 0.51 +0.1 0.64 perf-profile.calltrace.cycles-pp.kmem_cache_alloc_noprof.vm_area_alloc.__mmap_new_vma.__mmap_region.do_mmap 1.52 ± 5% +0.3 1.84 ± 2% perf-profile.calltrace.cycles-pp.rcu_free_sheaf.rcu_do_batch.rcu_core.handle_softirqs.run_ksoftirqd 2.16 ± 5% +0.4 2.59 ± 2% perf-profile.calltrace.cycles-pp.handle_softirqs.run_ksoftirqd.smpboot_thread_fn.kthread.ret_from_fork 2.16 ± 5% +0.4 2.59 ± 2% perf-profile.calltrace.cycles-pp.rcu_core.handle_softirqs.run_ksoftirqd.smpboot_thread_fn.kthread 2.16 ± 5% +0.4 2.59 ± 2% perf-profile.calltrace.cycles-pp.run_ksoftirqd.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm 2.16 ± 5% +0.4 2.59 ± 2% perf-profile.calltrace.cycles-pp.rcu_do_batch.rcu_core.handle_softirqs.run_ksoftirqd.smpboot_thread_fn 2.17 ± 5% +0.4 2.60 ± 2% perf-profile.calltrace.cycles-pp.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm 2.17 ± 5% +0.4 2.61 ± 2% perf-profile.calltrace.cycles-pp.kthread.ret_from_fork.ret_from_fork_asm 2.17 ± 5% +0.4 2.61 ± 2% perf-profile.calltrace.cycles-pp.ret_from_fork.ret_from_fork_asm 2.17 ± 5% +0.4 2.61 ± 2% perf-profile.calltrace.cycles-pp.ret_from_fork_asm 0.00 +0.6 0.60 ± 8% perf-profile.calltrace.cycles-pp.alloc_from_new_slab.refill_objects.__pcs_replace_empty_main.kmem_cache_alloc_noprof.mas_preallocate 0.00 +0.6 0.62 ± 5% perf-profile.calltrace.cycles-pp.alloc_from_new_slab.refill_objects.__pcs_replace_empty_main.kmem_cache_alloc_noprof.mas_store_gfp 12.88 +1.0 13.87 perf-profile.calltrace.cycles-pp._raw_spin_unlock_irqrestore.__refill_objects_node.refill_objects.__pcs_replace_empty_main.kmem_cache_alloc_noprof 12.83 +1.0 13.82 perf-profile.calltrace.cycles-pp.__irq_exit_rcu.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irqrestore.__refill_objects_node 12.88 +1.0 13.87 perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irqrestore.__refill_objects_node.refill_objects.__pcs_replace_empty_main 12.81 +1.0 13.81 perf-profile.calltrace.cycles-pp.rcu_do_batch.rcu_core.handle_softirqs.__irq_exit_rcu.sysvec_apic_timer_interrupt 12.82 +1.0 13.82 perf-profile.calltrace.cycles-pp.handle_softirqs.__irq_exit_rcu.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irqrestore 12.87 +1.0 13.87 perf-profile.calltrace.cycles-pp.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irqrestore.__refill_objects_node.refill_objects 12.81 +1.0 13.82 perf-profile.calltrace.cycles-pp.rcu_core.handle_softirqs.__irq_exit_rcu.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt 10.64 +1.3 11.92 perf-profile.calltrace.cycles-pp.rcu_free_sheaf.rcu_do_batch.rcu_core.handle_softirqs.__irq_exit_rcu 11.72 +1.6 13.30 perf-profile.calltrace.cycles-pp.__kmem_cache_free_bulk.rcu_free_sheaf.rcu_do_batch.rcu_core.handle_softirqs 11.63 +1.6 13.23 perf-profile.calltrace.cycles-pp.__slab_free.__kmem_cache_free_bulk.rcu_free_sheaf.rcu_do_batch.rcu_core 11.33 +1.6 12.94 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.__slab_free.__kmem_cache_free_bulk.rcu_free_sheaf.rcu_do_batch 11.20 +1.6 12.82 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.__slab_free.__kmem_cache_free_bulk.rcu_free_sheaf 22.90 +14.2 37.13 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.__refill_objects_node.refill_objects.__pcs_replace_empty_main 22.99 +14.3 37.26 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.__refill_objects_node.refill_objects.__pcs_replace_empty_main.kmem_cache_alloc_noprof 27.87 -10.5 17.33 perf-profile.children.cycles-pp.__slab_free 7.27 -0.8 6.48 perf-profile.children.cycles-pp.barn_get_empty_sheaf 5.91 -0.6 5.32 perf-profile.children.cycles-pp.barn_replace_empty_sheaf 10.36 -0.5 9.82 perf-profile.children.cycles-pp.mas_wr_node_store 7.58 -0.4 7.18 perf-profile.children.cycles-pp.vms_complete_munmap_vmas 3.98 -0.4 3.61 perf-profile.children.cycles-pp.barn_put_full_sheaf 4.70 -0.4 4.34 perf-profile.children.cycles-pp.__kfree_rcu_sheaf 5.91 -0.3 5.60 perf-profile.children.cycles-pp.unmap_region 5.19 -0.3 4.90 perf-profile.children.cycles-pp.kvfree_call_rcu 94.66 -0.3 94.41 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 94.52 -0.2 94.27 perf-profile.children.cycles-pp.do_syscall_64 5.57 ± 2% -0.2 5.37 perf-profile.children.cycles-pp.mas_store_prealloc 2.06 -0.2 1.89 perf-profile.children.cycles-pp.__get_unmapped_area 2.96 -0.2 2.80 perf-profile.children.cycles-pp.__pi_memcpy 2.55 -0.2 2.40 perf-profile.children.cycles-pp.free_pgtables 2.25 -0.1 2.12 perf-profile.children.cycles-pp.vms_gather_munmap_vmas 2.26 -0.1 2.13 perf-profile.children.cycles-pp.free_pgd_range 2.58 -0.1 2.44 perf-profile.children.cycles-pp.zap_pmd_range 2.90 -0.1 2.77 perf-profile.children.cycles-pp.unmap_vmas 2.14 -0.1 2.02 perf-profile.children.cycles-pp.free_p4d_range 2.75 -0.1 2.63 perf-profile.children.cycles-pp.__zap_vma_range 2.01 -0.1 1.89 perf-profile.children.cycles-pp.free_pud_range 1.94 -0.1 1.82 perf-profile.children.cycles-pp.thp_get_unmapped_area_vmflags 1.69 -0.1 1.59 perf-profile.children.cycles-pp.arch_get_unmapped_area_topdown 1.26 -0.1 1.18 perf-profile.children.cycles-pp.entry_SYSCALL_64 1.42 -0.1 1.34 perf-profile.children.cycles-pp.mas_find 1.38 -0.1 1.30 perf-profile.children.cycles-pp.vm_unmapped_area 1.36 -0.1 1.28 perf-profile.children.cycles-pp.unmapped_area_topdown 0.98 -0.1 0.92 perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack 1.58 -0.1 1.52 perf-profile.children.cycles-pp.__mmap_complete 1.46 -0.1 1.40 perf-profile.children.cycles-pp.perf_event_mmap 0.64 -0.0 0.60 perf-profile.children.cycles-pp.mas_prev_slot 0.54 -0.0 0.50 perf-profile.children.cycles-pp.mas_wr_store_type 1.08 -0.0 1.04 perf-profile.children.cycles-pp.perf_event_mmap_event 0.63 -0.0 0.59 perf-profile.children.cycles-pp.mas_empty_area_rev 0.54 -0.0 0.50 perf-profile.children.cycles-pp.__vma_start_write 0.54 -0.0 0.52 perf-profile.children.cycles-pp.mas_next_slot 0.43 -0.0 0.41 perf-profile.children.cycles-pp.mas_rev_awalk 0.53 -0.0 0.51 perf-profile.children.cycles-pp.mas_walk 0.64 -0.0 0.62 ± 2% perf-profile.children.cycles-pp.kmem_cache_free 0.36 -0.0 0.33 perf-profile.children.cycles-pp.__vma_start_exclude_readers 0.29 -0.0 0.27 perf-profile.children.cycles-pp.__rcu_free_sheaf_prepare 0.44 -0.0 0.42 perf-profile.children.cycles-pp.vma_merge_new_range 0.65 -0.0 0.63 perf-profile.children.cycles-pp.perf_iterate_sb 0.24 -0.0 0.22 perf-profile.children.cycles-pp.security_vm_enough_memory_mm 0.07 ± 5% -0.0 0.05 perf-profile.children.cycles-pp.mmap_region 0.14 -0.0 0.12 ± 4% perf-profile.children.cycles-pp.mas_prev 0.30 -0.0 0.28 perf-profile.children.cycles-pp.up_read 0.30 -0.0 0.29 perf-profile.children.cycles-pp.vma_set_page_prot 0.07 -0.0 0.06 ± 9% perf-profile.children.cycles-pp.unlink_file_vma_batch_add 0.08 ± 6% -0.0 0.06 perf-profile.children.cycles-pp.__alloc_empty_sheaf 0.08 ± 6% -0.0 0.06 perf-profile.children.cycles-pp.remove_vma 0.24 -0.0 0.22 perf-profile.children.cycles-pp.downgrade_write 0.20 ± 3% -0.0 0.18 ± 2% perf-profile.children.cycles-pp.mas_wr_walk_descend 0.28 -0.0 0.27 perf-profile.children.cycles-pp.down_write_killable 0.18 ± 2% -0.0 0.17 ± 2% perf-profile.children.cycles-pp.vma_wants_writenotify 0.07 ± 5% -0.0 0.06 perf-profile.children.cycles-pp.__kmalloc_noprof 0.20 -0.0 0.19 perf-profile.children.cycles-pp.tlb_gather_mmu 0.07 -0.0 0.06 perf-profile.children.cycles-pp.__call_rcu_common 0.16 -0.0 0.15 perf-profile.children.cycles-pp.may_expand_vm 0.14 -0.0 0.13 perf-profile.children.cycles-pp.up_write 0.12 -0.0 0.11 perf-profile.children.cycles-pp.hrtimer_interrupt 0.15 -0.0 0.14 perf-profile.children.cycles-pp.vma_is_shared_writable 0.11 -0.0 0.10 perf-profile.children.cycles-pp.x64_sys_call 0.88 +0.1 0.99 perf-profile.children.cycles-pp.vm_area_alloc 0.36 +0.1 0.50 perf-profile.children.cycles-pp.__memcg_slab_post_alloc_hook 2.16 ± 5% +0.4 2.59 ± 2% perf-profile.children.cycles-pp.run_ksoftirqd 2.17 ± 5% +0.4 2.60 ± 2% perf-profile.children.cycles-pp.smpboot_thread_fn 2.17 ± 5% +0.4 2.61 ± 2% perf-profile.children.cycles-pp.kthread 2.17 ± 5% +0.4 2.61 ± 2% perf-profile.children.cycles-pp.ret_from_fork 2.17 ± 5% +0.4 2.61 ± 2% perf-profile.children.cycles-pp.ret_from_fork_asm 0.69 ± 5% +0.5 1.22 ± 4% perf-profile.children.cycles-pp.alloc_from_new_slab 15.26 +1.2 16.44 perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore 18.16 +1.3 19.49 perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt 18.14 +1.3 19.47 perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt 18.02 +1.3 19.36 perf-profile.children.cycles-pp.__irq_exit_rcu 60.59 +1.5 62.05 perf-profile.children.cycles-pp.__pcs_replace_empty_main 61.51 +1.6 63.10 perf-profile.children.cycles-pp.kmem_cache_alloc_noprof 20.16 +1.8 21.94 perf-profile.children.cycles-pp.rcu_core 20.18 +1.8 21.95 perf-profile.children.cycles-pp.handle_softirqs 20.14 +1.8 21.92 perf-profile.children.cycles-pp.rcu_do_batch 50.97 +2.0 52.95 perf-profile.children.cycles-pp.__refill_objects_node 15.07 +2.2 17.25 perf-profile.children.cycles-pp.__kmem_cache_free_bulk 15.67 +2.2 17.86 perf-profile.children.cycles-pp.rcu_free_sheaf 65.82 +2.4 68.25 perf-profile.children.cycles-pp._raw_spin_lock_irqsave 65.33 +2.5 67.80 perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath 51.67 +2.5 54.18 perf-profile.children.cycles-pp.refill_objects 2.16 -0.5 1.66 perf-profile.self.cycles-pp.__refill_objects_node 2.64 -0.2 2.48 perf-profile.self.cycles-pp.__pi_memcpy 2.36 -0.1 2.22 perf-profile.self.cycles-pp.zap_pmd_range 1.84 -0.1 1.71 perf-profile.self.cycles-pp.free_pud_range 1.78 -0.1 1.66 perf-profile.self.cycles-pp.__mmap_region 0.52 -0.1 0.40 perf-profile.self.cycles-pp.__slab_free 1.44 -0.1 1.34 perf-profile.self.cycles-pp.mas_wr_node_store 0.98 -0.1 0.92 perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack 0.84 -0.1 0.78 perf-profile.self.cycles-pp.mas_store_gfp 0.55 -0.0 0.50 perf-profile.self.cycles-pp.do_vmi_align_munmap 0.58 -0.0 0.54 perf-profile.self.cycles-pp.mas_prev_slot 0.62 -0.0 0.58 perf-profile.self.cycles-pp.entry_SYSCALL_64 0.17 -0.0 0.13 perf-profile.self.cycles-pp.do_mmap 0.48 -0.0 0.44 perf-profile.self.cycles-pp.__mmap 0.49 -0.0 0.45 perf-profile.self.cycles-pp._raw_spin_lock_irqsave 0.35 -0.0 0.32 perf-profile.self.cycles-pp.vms_gather_munmap_vmas 0.18 -0.0 0.15 ± 2% perf-profile.self.cycles-pp.thp_get_unmapped_area_vmflags 0.42 -0.0 0.39 perf-profile.self.cycles-pp.__munmap 0.49 -0.0 0.46 perf-profile.self.cycles-pp.mas_next_slot 0.48 -0.0 0.45 perf-profile.self.cycles-pp.perf_iterate_sb 0.10 -0.0 0.07 ± 5% perf-profile.self.cycles-pp.__get_unmapped_area 0.40 -0.0 0.37 perf-profile.self.cycles-pp.mas_rev_awalk 0.48 -0.0 0.45 perf-profile.self.cycles-pp.mas_walk 0.31 -0.0 0.28 perf-profile.self.cycles-pp.kmem_cache_free 0.37 -0.0 0.34 perf-profile.self.cycles-pp.__vm_munmap 0.30 -0.0 0.28 perf-profile.self.cycles-pp.__vma_start_exclude_readers 0.31 -0.0 0.29 perf-profile.self.cycles-pp.mas_wr_store_type 0.36 -0.0 0.34 perf-profile.self.cycles-pp.perf_event_mmap 0.37 -0.0 0.35 perf-profile.self.cycles-pp.mas_preallocate 0.68 -0.0 0.66 perf-profile.self.cycles-pp.mas_update_gap 0.32 -0.0 0.30 perf-profile.self.cycles-pp.vma_merge_new_range 0.29 -0.0 0.27 perf-profile.self.cycles-pp.__rcu_free_sheaf_prepare 0.37 -0.0 0.35 perf-profile.self.cycles-pp.mas_find 0.18 -0.0 0.16 perf-profile.self.cycles-pp.rcu_free_sheaf 0.33 -0.0 0.31 perf-profile.self.cycles-pp.vm_area_alloc 0.07 -0.0 0.05 perf-profile.self.cycles-pp.unlink_file_vma_batch_add 0.38 -0.0 0.36 perf-profile.self.cycles-pp.mas_store_prealloc 0.26 -0.0 0.24 perf-profile.self.cycles-pp.arch_get_unmapped_area_topdown 0.25 -0.0 0.23 ± 2% perf-profile.self.cycles-pp.up_read 0.26 -0.0 0.24 perf-profile.self.cycles-pp.down_write_killable 0.22 ± 2% -0.0 0.20 perf-profile.self.cycles-pp.downgrade_write 0.26 -0.0 0.25 perf-profile.self.cycles-pp.__kfree_rcu_sheaf 0.20 ± 2% -0.0 0.19 perf-profile.self.cycles-pp.vms_complete_munmap_vmas 0.18 ± 2% -0.0 0.16 ± 2% perf-profile.self.cycles-pp.mas_wr_walk_descend 0.19 ± 2% -0.0 0.18 perf-profile.self.cycles-pp.do_syscall_64 0.38 -0.0 0.37 perf-profile.self.cycles-pp.unmapped_area_topdown 0.17 -0.0 0.16 perf-profile.self.cycles-pp.__vma_start_write 0.13 -0.0 0.12 perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe 0.10 -0.0 0.09 perf-profile.self.cycles-pp.free_pgd_range 0.07 -0.0 0.06 perf-profile.self.cycles-pp.mas_prev 0.17 -0.0 0.16 perf-profile.self.cycles-pp.tlb_finish_mmu 0.12 -0.0 0.11 perf-profile.self.cycles-pp.security_vm_enough_memory_mm 0.06 -0.0 0.05 perf-profile.self.cycles-pp.mmap_region 0.43 +0.1 0.50 perf-profile.self.cycles-pp.kvfree_call_rcu 0.29 +0.1 0.41 perf-profile.self.cycles-pp.__memcg_slab_post_alloc_hook 65.33 +2.5 67.80 perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki