* [linux-next:master] [mm, slab] 298cdbf5f7: will-it-scale.per_process_ops 6.3% regression
@ 2026-05-11 14:45 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-05-11 14:45 UTC (permalink / raw)
To: Vlastimil Babka; +Cc: oe-lkp, lkp, Hao Li, linux-mm, oliver.sang
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 <oliver.sang@intel.com>
| 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.
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