[tip:sched/core] [sched/fair] 9fe89f022c: stress-ng.shm.ops_per_sec 2.8% regression
kernel test robot <[email protected]> Tue, 10 Mar 2026 09:13:37 +0800
| Newsgroups | dev.linux.lists.oe-lkp,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
Hello,
kernel test robot noticed a 2.8% regression of stress-ng.shm.ops_per_sec on:
commit: 9fe89f022c05d99c052d6bc088b82d4ff83bf463 ("sched/fair: More complex proportional newidle balance")
https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git sched/core
testcase: stress-ng
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_threads: 100%
testtime: 60s
test: shm
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 <[email protected]>
| Closes: https://lore.kernel.org/oe-lkp/[email protected]
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260309/[email protected]
=========================================================================================
compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime:
gcc-14/performance/x86_64-rhel-9.4/100%/debian-13-x86_64-20250902.cgz/lkp-srf-2sp3/shm/stress-ng/60s
commit:
3b68df9781 ("rseq: slice ext: Ensure rseq feature size differs from original rseq size")
9fe89f022c ("sched/fair: More complex proportional newidle balance")
3b68df978133ac3d 9fe89f022c05d99c052d6bc088b
---------------- ---------------------------
%stddev %change %stddev
\ | \
1311128 -2.8% 1274240 stress-ng.shm.ops
21868 -2.8% 21253 stress-ng.shm.ops_per_sec
2855521 -6.5% 2669677 stress-ng.time.involuntary_context_switches
3.642e+08 -2.9% 3.538e+08 stress-ng.time.minor_page_faults
3129464 -1.0% 3097974 stress-ng.time.voluntary_context_switches
1478057 -11.1% 1314061 cpuidle..usage
0.29 +0.1 0.36 ± 3% mpstat.cpu.all.soft%
38.74 -1.2% 38.29 turbostat.RAMWatt
148897 -5.6% 140512 vmstat.system.cs
0.12 -20.2% 0.10 perf-sched.sch_delay.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown]
0.12 -20.2% 0.10 perf-sched.total_sch_delay.average.ms
713793 -5.3% 676066 perf-sched.total_wait_and_delay.count.ms
713793 -5.3% 676066 perf-sched.wait_and_delay.count.[unknown].[unknown].[unknown].[unknown].[unknown]
3.426e+10 -1.7% 3.367e+10 perf-stat.i.branch-instructions
0.23 +0.0 0.24 perf-stat.i.branch-miss-rate%
77812969 +3.1% 80201846 perf-stat.i.branch-misses
1.273e+09 -1.7% 1.252e+09 perf-stat.i.cache-misses
2.059e+09 -2.2% 2.014e+09 perf-stat.i.cache-references
154818 -5.6% 146154 perf-stat.i.context-switches
3.35 +2.1% 3.42 perf-stat.i.cpi
13618 +45.6% 19821 perf-stat.i.cpu-migrations
450.98 +2.0% 459.92 perf-stat.i.cycles-between-cache-misses
1.715e+11 -1.8% 1.684e+11 perf-stat.i.instructions
0.30 -2.1% 0.29 perf-stat.i.ipc
64.33 -2.4% 62.78 perf-stat.i.metric.K/sec
6175905 -2.4% 6025197 perf-stat.i.minor-faults
6175906 -2.4% 6025199 perf-stat.i.page-faults
0.23 +0.0 0.24 perf-stat.overall.branch-miss-rate%
3.36 +2.2% 3.43 perf-stat.overall.cpi
452.14 +2.0% 461.22 perf-stat.overall.cycles-between-cache-misses
0.30 -2.1% 0.29 perf-stat.overall.ipc
75143235 +4.4% 78447635 perf-stat.ps.branch-misses
149715 -4.4% 143121 perf-stat.ps.context-switches
1.856e+11 +1.3% 1.88e+11 perf-stat.ps.cpu-clock
5.572e+11 +1.6% 5.66e+11 perf-stat.ps.cpu-cycles
13181 +47.7% 19471 perf-stat.ps.cpu-migrations
1.856e+11 +1.3% 1.88e+11 perf-stat.ps.task-clock
10.74 -0.3 10.41 perf-profile.calltrace.cycles-pp._Fork.stress_run
10.43 -0.3 10.14 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe._Fork.stress_run
10.43 -0.3 10.14 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe._Fork.stress_run
10.43 -0.3 10.14 perf-profile.calltrace.cycles-pp.__do_sys_clone.do_syscall_64.entry_SYSCALL_64_after_hwframe._Fork.stress_run
10.42 -0.3 10.13 perf-profile.calltrace.cycles-pp.kernel_clone.__do_sys_clone.do_syscall_64.entry_SYSCALL_64_after_hwframe._Fork
9.90 -0.3 9.63 perf-profile.calltrace.cycles-pp.dup_mm.copy_process.kernel_clone.__do_sys_clone.do_syscall_64
10.22 -0.3 9.94 perf-profile.calltrace.cycles-pp.copy_process.kernel_clone.__do_sys_clone.do_syscall_64.entry_SYSCALL_64_after_hwframe
36.50 -0.3 36.23 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe
36.50 -0.3 36.23 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe
9.50 -0.3 9.23 perf-profile.calltrace.cycles-pp.dup_mmap.dup_mm.copy_process.kernel_clone.__do_sys_clone
20.39 -0.3 20.13 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.folio_lruvec_lock_irqsave.__page_cache_release.folios_put_refs.shmem_undo_range
12.04 -0.2 11.86 perf-profile.calltrace.cycles-pp.__mmput.exit_mm.do_exit.do_group_exit.__x64_sys_exit_group
12.04 -0.2 11.87 perf-profile.calltrace.cycles-pp.exit_mm.do_exit.do_group_exit.__x64_sys_exit_group.x64_sys_call
12.02 -0.2 11.84 perf-profile.calltrace.cycles-pp.exit_mmap.__mmput.exit_mm.do_exit.do_group_exit
8.07 -0.2 7.90 perf-profile.calltrace.cycles-pp.folio_lruvec_lock_irqsave.folio_batch_move_lru.__folio_batch_add_and_move.set_pte_range.finish_fault
8.07 -0.2 7.90 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.folio_lruvec_lock_irqsave.folio_batch_move_lru.__folio_batch_add_and_move.set_pte_range
9.67 -0.2 9.50 perf-profile.calltrace.cycles-pp.__x64_sys_fallocate.do_syscall_64.entry_SYSCALL_64_after_hwframe.syscall
9.67 -0.2 9.50 perf-profile.calltrace.cycles-pp.vfs_fallocate.__x64_sys_fallocate.do_syscall_64.entry_SYSCALL_64_after_hwframe.syscall
9.67 -0.2 9.51 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.syscall
9.67 -0.2 9.51 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.syscall
3.70 -0.2 3.54 ± 2% perf-profile.calltrace.cycles-pp.anon_vma_fork.dup_mmap.dup_mm.copy_process.kernel_clone
9.67 -0.2 9.51 perf-profile.calltrace.cycles-pp.syscall
2.85 -0.1 2.72 perf-profile.calltrace.cycles-pp.anon_vma_clone.anon_vma_fork.dup_mmap.dup_mm.copy_process
2.76 -0.1 2.63 perf-profile.calltrace.cycles-pp.free_pgtables.exit_mmap.__mmput.exit_mm.do_exit
2.14 -0.1 2.04 perf-profile.calltrace.cycles-pp.unlink_anon_vmas.free_pgtables.exit_mmap.__mmput.exit_mm
2.32 -0.1 2.24 perf-profile.calltrace.cycles-pp.copy_mc_enhanced_fast_string.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
1.22 -0.1 1.16 perf-profile.calltrace.cycles-pp.anon_vma_interval_tree_insert.anon_vma_clone.anon_vma_fork.dup_mmap.dup_mm
2.20 -0.0 2.15 perf-profile.calltrace.cycles-pp.shmem_setattr.notify_change.do_truncate.do_ftruncate.do_sys_ftruncate
1.46 -0.0 1.42 perf-profile.calltrace.cycles-pp.__x64_sys_madvise.do_syscall_64.entry_SYSCALL_64_after_hwframe.__madvise.stress_run
1.46 -0.0 1.42 perf-profile.calltrace.cycles-pp.do_madvise.__x64_sys_madvise.do_syscall_64.entry_SYSCALL_64_after_hwframe.__madvise
1.22 -0.0 1.19 perf-profile.calltrace.cycles-pp.faultin_page_range.madvise_do_behavior.do_madvise.__x64_sys_madvise.do_syscall_64
1.06 -0.0 1.03 perf-profile.calltrace.cycles-pp.handle_mm_fault.__get_user_pages.faultin_page_range.madvise_do_behavior.do_madvise
1.09 -0.0 1.06 perf-profile.calltrace.cycles-pp.__get_user_pages.faultin_page_range.madvise_do_behavior.do_madvise.__x64_sys_madvise
1.46 -0.0 1.43 perf-profile.calltrace.cycles-pp.__madvise.stress_run
1.46 -0.0 1.42 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__madvise.stress_run
0.64 -0.0 0.61 perf-profile.calltrace.cycles-pp.__anon_vma_interval_tree_remove.unlink_anon_vmas.free_pgtables.exit_mmap.__mmput
1.06 -0.0 1.03 perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.__get_user_pages.faultin_page_range.madvise_do_behavior
1.45 -0.0 1.42 perf-profile.calltrace.cycles-pp.madvise_do_behavior.do_madvise.__x64_sys_madvise.do_syscall_64.entry_SYSCALL_64_after_hwframe
1.46 -0.0 1.43 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__madvise.stress_run
1.04 -0.0 1.02 perf-profile.calltrace.cycles-pp.do_fault.__handle_mm_fault.handle_mm_fault.__get_user_pages.faultin_page_range
0.56 +0.1 0.61 perf-profile.calltrace.cycles-pp.unmap_page_range.unmap_vmas.unmap_region.vms_complete_munmap_vmas.do_vmi_align_munmap
0.56 +0.1 0.62 perf-profile.calltrace.cycles-pp.unmap_vmas.unmap_region.vms_complete_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap
0.56 +0.1 0.61 perf-profile.calltrace.cycles-pp.zap_pmd_range.unmap_page_range.unmap_vmas.unmap_region.vms_complete_munmap_vmas
0.56 +0.1 0.61 perf-profile.calltrace.cycles-pp.zap_pte_range.zap_pmd_range.unmap_page_range.unmap_vmas.unmap_region
0.56 ± 3% +0.2 0.78 ± 7% perf-profile.calltrace.cycles-pp.rmqueue.get_page_from_freelist.__alloc_frozen_pages_noprof.alloc_pages_mpol.folio_alloc_mpol_noprof
0.66 ± 2% +0.2 0.89 ± 6% perf-profile.calltrace.cycles-pp.shmem_alloc_folio.shmem_alloc_and_add_folio.shmem_get_folio_gfp.shmem_fallocate.vfs_fallocate
0.63 ± 2% +0.2 0.86 ± 6% perf-profile.calltrace.cycles-pp.__alloc_frozen_pages_noprof.alloc_pages_mpol.folio_alloc_mpol_noprof.shmem_alloc_folio.shmem_alloc_and_add_folio
0.65 ± 2% +0.2 0.88 ± 6% perf-profile.calltrace.cycles-pp.folio_alloc_mpol_noprof.shmem_alloc_folio.shmem_alloc_and_add_folio.shmem_get_folio_gfp.shmem_fallocate
0.60 ± 3% +0.2 0.84 ± 7% perf-profile.calltrace.cycles-pp.get_page_from_freelist.__alloc_frozen_pages_noprof.alloc_pages_mpol.folio_alloc_mpol_noprof.shmem_alloc_folio
0.64 ± 2% +0.2 0.88 ± 6% perf-profile.calltrace.cycles-pp.alloc_pages_mpol.folio_alloc_mpol_noprof.shmem_alloc_folio.shmem_alloc_and_add_folio.shmem_get_folio_gfp
0.61 ± 3% +0.3 0.87 ± 7% perf-profile.calltrace.cycles-pp.vma_alloc_folio_noprof.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
0.58 ± 3% +0.3 0.84 ± 7% perf-profile.calltrace.cycles-pp.__alloc_frozen_pages_noprof.alloc_pages_mpol.vma_alloc_folio_noprof.do_fault.__handle_mm_fault
0.60 ± 3% +0.3 0.85 ± 7% perf-profile.calltrace.cycles-pp.alloc_pages_mpol.vma_alloc_folio_noprof.do_fault.__handle_mm_fault.handle_mm_fault
0.54 ± 3% +0.3 0.80 ± 7% perf-profile.calltrace.cycles-pp.get_page_from_freelist.__alloc_frozen_pages_noprof.alloc_pages_mpol.vma_alloc_folio_noprof.do_fault
11.28 +0.4 11.66 perf-profile.calltrace.cycles-pp.__tlb_batch_free_encoded_pages.tlb_finish_mmu.unmap_region.vms_complete_munmap_vmas.do_vmi_align_munmap
11.26 +0.4 11.65 perf-profile.calltrace.cycles-pp.folios_put_refs.free_pages_and_swap_cache.__tlb_batch_free_encoded_pages.tlb_finish_mmu.unmap_region
11.28 +0.4 11.66 perf-profile.calltrace.cycles-pp.free_pages_and_swap_cache.__tlb_batch_free_encoded_pages.tlb_finish_mmu.unmap_region.vms_complete_munmap_vmas
11.29 +0.4 11.68 perf-profile.calltrace.cycles-pp.tlb_finish_mmu.unmap_region.vms_complete_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap
12.01 +0.4 12.44 perf-profile.calltrace.cycles-pp.__munmap.stress_run
11.97 +0.4 12.41 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap.stress_run
11.96 +0.4 12.40 perf-profile.calltrace.cycles-pp.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
11.96 +0.4 12.40 perf-profile.calltrace.cycles-pp.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap.stress_run
11.95 +0.4 12.39 perf-profile.calltrace.cycles-pp.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64
11.87 +0.4 12.31 perf-profile.calltrace.cycles-pp.unmap_region.vms_complete_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap
11.96 +0.4 12.40 perf-profile.calltrace.cycles-pp.do_vmi_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe
11.97 +0.4 12.41 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__munmap.stress_run
11.88 +0.4 12.33 perf-profile.calltrace.cycles-pp.vms_complete_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap
51.72 +0.5 52.20 perf-profile.calltrace.cycles-pp.stress_run
11.08 +0.5 11.57 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.unlink.stress_run
11.08 +0.5 11.57 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.unlink.stress_run
11.08 +0.5 11.57 perf-profile.calltrace.cycles-pp.unlink.stress_run
11.07 +0.5 11.57 perf-profile.calltrace.cycles-pp.__x64_sys_unlink.do_syscall_64.entry_SYSCALL_64_after_hwframe.unlink.stress_run
10.98 +0.5 11.48 perf-profile.calltrace.cycles-pp.evict.filename_unlinkat.__x64_sys_unlink.do_syscall_64.entry_SYSCALL_64_after_hwframe
10.98 +0.5 11.47 perf-profile.calltrace.cycles-pp.shmem_evict_inode.evict.filename_unlinkat.__x64_sys_unlink.do_syscall_64
10.96 +0.5 11.46 perf-profile.calltrace.cycles-pp.shmem_undo_range.shmem_evict_inode.evict.filename_unlinkat.__x64_sys_unlink
11.07 +0.5 11.57 perf-profile.calltrace.cycles-pp.filename_unlinkat.__x64_sys_unlink.do_syscall_64.entry_SYSCALL_64_after_hwframe.unlink
10.22 +0.5 10.72 perf-profile.calltrace.cycles-pp.folios_put_refs.shmem_undo_range.shmem_evict_inode.evict.filename_unlinkat
0.00 +0.7 0.70 ± 8% perf-profile.calltrace.cycles-pp.rmqueue.get_page_from_freelist.__alloc_frozen_pages_noprof.alloc_pages_mpol.vma_alloc_folio_noprof
0.00 +0.8 0.76 ± 20% perf-profile.calltrace.cycles-pp.free_unref_folios.folios_put_refs.free_pages_and_swap_cache.__tlb_batch_free_encoded_pages.tlb_finish_mmu
0.00 +0.8 0.84 ± 18% perf-profile.calltrace.cycles-pp.free_pcppages_bulk.free_frozen_page_commit.free_unref_folios.folios_put_refs.shmem_undo_range
0.00 +0.9 0.90 ± 18% perf-profile.calltrace.cycles-pp.free_frozen_page_commit.free_unref_folios.folios_put_refs.shmem_undo_range.shmem_evict_inode
0.00 +0.9 0.94 ± 17% perf-profile.calltrace.cycles-pp.free_unref_folios.folios_put_refs.shmem_undo_range.shmem_evict_inode.evict
0.18 ±141% +1.2 1.39 ± 8% perf-profile.calltrace.cycles-pp.__rmqueue_pcplist.rmqueue.get_page_from_freelist.__alloc_frozen_pages_noprof.alloc_pages_mpol
10.82 -0.3 10.49 perf-profile.children.cycles-pp._Fork
10.43 -0.3 10.13 perf-profile.children.cycles-pp.kernel_clone
10.43 -0.3 10.14 perf-profile.children.cycles-pp.__do_sys_clone
9.90 -0.3 9.63 perf-profile.children.cycles-pp.dup_mm
10.22 -0.3 9.94 perf-profile.children.cycles-pp.copy_process
9.50 -0.3 9.24 perf-profile.children.cycles-pp.dup_mmap
12.04 -0.2 11.86 perf-profile.children.cycles-pp.__mmput
12.02 -0.2 11.84 perf-profile.children.cycles-pp.exit_mmap
9.67 -0.2 9.51 perf-profile.children.cycles-pp.syscall
3.70 -0.2 3.54 ± 2% perf-profile.children.cycles-pp.anon_vma_fork
2.86 -0.1 2.72 perf-profile.children.cycles-pp.anon_vma_clone
2.78 -0.1 2.66 perf-profile.children.cycles-pp.free_pgtables
2.15 -0.1 2.05 perf-profile.children.cycles-pp.unlink_anon_vmas
2.52 -0.1 2.43 perf-profile.children.cycles-pp.copy_mc_enhanced_fast_string
1.23 -0.1 1.17 perf-profile.children.cycles-pp.anon_vma_interval_tree_insert
0.82 ± 2% -0.1 0.76 ± 2% perf-profile.children.cycles-pp.rwsem_spin_on_owner
0.38 ± 9% -0.1 0.33 ± 8% perf-profile.children.cycles-pp.wp_page_copy
0.25 -0.0 0.22 ± 2% perf-profile.children.cycles-pp.schedule_tail
1.46 -0.0 1.42 perf-profile.children.cycles-pp.__x64_sys_madvise
1.46 -0.0 1.42 perf-profile.children.cycles-pp.do_madvise
1.22 -0.0 1.19 perf-profile.children.cycles-pp.faultin_page_range
1.09 -0.0 1.06 perf-profile.children.cycles-pp.__get_user_pages
1.46 -0.0 1.43 perf-profile.children.cycles-pp.__madvise
0.64 -0.0 0.61 perf-profile.children.cycles-pp.__anon_vma_interval_tree_remove
0.56 -0.0 0.52 perf-profile.children.cycles-pp._raw_spin_lock
1.45 -0.0 1.42 perf-profile.children.cycles-pp.madvise_do_behavior
0.68 -0.0 0.65 perf-profile.children.cycles-pp.truncate_inode_folio
0.59 -0.0 0.56 perf-profile.children.cycles-pp.__vma_start_write
0.38 ± 2% -0.0 0.35 perf-profile.children.cycles-pp.__vma_start_exclude_readers
0.47 -0.0 0.44 perf-profile.children.cycles-pp.up_write
0.61 -0.0 0.59 perf-profile.children.cycles-pp.filemap_remove_folio
0.18 -0.0 0.16 ± 2% perf-profile.children.cycles-pp.select_task_rq_fair
0.20 -0.0 0.18 ± 2% perf-profile.children.cycles-pp.wake_up_new_task
0.10 ± 3% -0.0 0.08 perf-profile.children.cycles-pp.common_startup_64
0.10 ± 3% -0.0 0.08 perf-profile.children.cycles-pp.cpu_startup_entry
0.10 ± 3% -0.0 0.08 perf-profile.children.cycles-pp.do_idle
0.36 -0.0 0.34 perf-profile.children.cycles-pp.pte_offset_map_lock
0.10 ± 3% -0.0 0.08 perf-profile.children.cycles-pp.start_secondary
0.16 -0.0 0.14 perf-profile.children.cycles-pp.update_sg_wakeup_stats
0.08 ± 4% -0.0 0.06 perf-profile.children.cycles-pp.cpuidle_idle_call
0.16 ± 2% -0.0 0.14 ± 3% perf-profile.children.cycles-pp.sched_balance_find_dst_group
0.06 -0.0 0.04 ± 44% perf-profile.children.cycles-pp.acpi_idle_do_entry
0.06 -0.0 0.04 ± 44% perf-profile.children.cycles-pp.acpi_safe_halt
0.06 -0.0 0.04 ± 44% perf-profile.children.cycles-pp.pv_native_safe_halt
0.45 -0.0 0.43 perf-profile.children.cycles-pp.__filemap_remove_folio
0.40 -0.0 0.38 perf-profile.children.cycles-pp.lru_add
0.41 -0.0 0.40 perf-profile.children.cycles-pp.__memcg_slab_post_alloc_hook
0.08 ± 6% -0.0 0.06 ± 6% perf-profile.children.cycles-pp.__put_user_4
0.06 ± 7% -0.0 0.05 perf-profile.children.cycles-pp.cpuidle_enter
0.06 ± 7% -0.0 0.05 perf-profile.children.cycles-pp.cpuidle_enter_state
0.18 -0.0 0.17 ± 2% perf-profile.children.cycles-pp.__percpu_counter_init_many
0.24 ± 2% -0.0 0.23 ± 2% perf-profile.children.cycles-pp.finish_task_switch
0.06 ± 6% -0.0 0.05 perf-profile.children.cycles-pp.acpi_idle_enter
0.28 -0.0 0.26 perf-profile.children.cycles-pp.lru_gen_add_folio
0.28 -0.0 0.27 perf-profile.children.cycles-pp.xas_store
0.22 -0.0 0.21 perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt
0.10 -0.0 0.09 perf-profile.children.cycles-pp._raw_spin_trylock
0.08 -0.0 0.07 perf-profile.children.cycles-pp.__anon_vma_interval_tree_augment_rotate
0.12 -0.0 0.11 perf-profile.children.cycles-pp.folio_unlock
0.08 +0.0 0.09 ± 5% perf-profile.children.cycles-pp.ksys_read
0.07 ± 5% +0.0 0.09 ± 5% perf-profile.children.cycles-pp.vfs_read
0.06 ± 6% +0.0 0.08 ± 4% perf-profile.children.cycles-pp.anon_pipe_read
0.06 ± 11% +0.0 0.09 ± 13% perf-profile.children.cycles-pp.__free_frozen_pages
0.08 ± 4% +0.0 0.11 perf-profile.children.cycles-pp.flush_tlb_mm_range
0.06 ± 9% +0.0 0.09 perf-profile.children.cycles-pp.on_each_cpu_cond_mask
0.06 ± 9% +0.0 0.09 perf-profile.children.cycles-pp.smp_call_function_many_cond
0.08 +0.0 0.12 perf-profile.children.cycles-pp.do_wait
0.09 +0.0 0.13 perf-profile.children.cycles-pp.kernel_wait4
0.05 +0.0 0.10 ± 4% perf-profile.children.cycles-pp.do_task_dead
0.10 ± 7% +0.0 0.14 ± 3% perf-profile.children.cycles-pp.__free_one_page
0.00 +0.1 0.06 ± 8% perf-profile.children.cycles-pp.__vmalloc_area_node
0.18 ± 2% +0.1 0.24 ± 2% perf-profile.children.cycles-pp.schedule
0.05 +0.1 0.12 perf-profile.children.cycles-pp.update_sg_lb_stats
0.06 +0.1 0.13 ± 3% perf-profile.children.cycles-pp.sched_balance_find_src_group
0.06 ± 6% +0.1 0.13 ± 2% perf-profile.children.cycles-pp.update_sd_lb_stats
0.08 +0.1 0.17 ± 2% perf-profile.children.cycles-pp.sched_balance_rq
0.10 ± 3% +0.1 0.19 ± 3% perf-profile.children.cycles-pp.pick_next_task_fair
0.07 ± 5% +0.1 0.16 ± 2% perf-profile.children.cycles-pp.sched_balance_newidle
0.10 +0.1 0.19 ± 2% perf-profile.children.cycles-pp.__pick_next_task
0.27 +0.1 0.37 perf-profile.children.cycles-pp.__schedule
0.12 ± 7% +0.1 0.22 ± 6% perf-profile.children.cycles-pp.__del_page_from_free_list
84.08 +0.1 84.21 perf-profile.children.cycles-pp.do_syscall_64
84.08 +0.1 84.22 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
0.56 ± 2% +0.2 0.74 ± 9% perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt
0.38 ± 2% +0.2 0.56 ± 11% perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore
0.58 ± 2% +0.2 0.76 ± 9% perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt
0.11 ± 8% +0.2 0.30 ± 22% perf-profile.children.cycles-pp.tlb_remove_table_rcu
0.33 ± 3% +0.2 0.52 ± 13% perf-profile.children.cycles-pp.__irq_exit_rcu
0.33 ± 2% +0.2 0.52 ± 13% perf-profile.children.cycles-pp.handle_softirqs
0.29 ± 3% +0.2 0.49 ± 15% perf-profile.children.cycles-pp.rcu_do_batch
0.00 +0.2 0.20 ± 32% perf-profile.children.cycles-pp.free_one_page
0.30 ± 3% +0.2 0.50 ± 14% perf-profile.children.cycles-pp.rcu_core
0.88 ± 2% +0.2 1.10 ± 5% perf-profile.children.cycles-pp.shmem_alloc_folio
0.85 ± 2% +0.2 1.08 ± 5% perf-profile.children.cycles-pp.folio_alloc_mpol_noprof
0.66 ± 2% +0.3 0.93 ± 6% perf-profile.children.cycles-pp.vma_alloc_folio_noprof
24.51 +0.3 24.82 perf-profile.children.cycles-pp.shmem_undo_range
15.72 +0.3 16.06 perf-profile.children.cycles-pp.free_pages_and_swap_cache
15.72 +0.3 16.06 perf-profile.children.cycles-pp.__tlb_batch_free_encoded_pages
15.75 +0.3 16.10 perf-profile.children.cycles-pp.tlb_finish_mmu
12.01 +0.4 12.45 perf-profile.children.cycles-pp.__munmap
11.96 +0.4 12.40 perf-profile.children.cycles-pp.__vm_munmap
11.96 +0.4 12.40 perf-profile.children.cycles-pp.__x64_sys_munmap
11.95 +0.4 12.39 perf-profile.children.cycles-pp.do_vmi_align_munmap
11.87 +0.4 12.31 perf-profile.children.cycles-pp.unmap_region
11.96 +0.4 12.40 perf-profile.children.cycles-pp.do_vmi_munmap
11.88 +0.4 12.33 perf-profile.children.cycles-pp.vms_complete_munmap_vmas
51.72 +0.5 52.20 perf-profile.children.cycles-pp.stress_run
11.08 +0.5 11.57 perf-profile.children.cycles-pp.unlink
11.07 +0.5 11.57 perf-profile.children.cycles-pp.__x64_sys_unlink
10.98 +0.5 11.48 perf-profile.children.cycles-pp.evict
10.98 +0.5 11.47 perf-profile.children.cycles-pp.shmem_evict_inode
11.07 +0.5 11.57 perf-profile.children.cycles-pp.filename_unlinkat
1.24 ± 3% +0.5 1.76 ± 8% perf-profile.children.cycles-pp.rmqueue
1.96 ± 2% +0.5 2.49 ± 5% perf-profile.children.cycles-pp.alloc_pages_mpol
1.08 ± 3% +0.5 1.61 ± 8% perf-profile.children.cycles-pp.__rmqueue_pcplist
1.90 ± 2% +0.5 2.44 ± 5% perf-profile.children.cycles-pp.__alloc_frozen_pages_noprof
1.73 ± 2% +0.5 2.27 ± 6% perf-profile.children.cycles-pp.get_page_from_freelist
0.23 ± 13% +0.5 0.78 ± 17% perf-profile.children.cycles-pp.rmqueue_bulk
62.83 +0.7 63.50 perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
62.93 +0.7 63.61 perf-profile.children.cycles-pp._raw_spin_lock_irqsave
36.86 +0.7 37.55 perf-profile.children.cycles-pp.folios_put_refs
0.47 ± 12% +1.1 1.60 ± 19% perf-profile.children.cycles-pp.free_pcppages_bulk
0.64 ± 8% +1.1 1.78 ± 18% perf-profile.children.cycles-pp.free_unref_folios
0.54 ± 11% +1.2 1.72 ± 19% perf-profile.children.cycles-pp.free_frozen_page_commit
2.73 -0.1 2.60 perf-profile.self.cycles-pp.shmem_get_folio_gfp
2.52 -0.1 2.42 perf-profile.self.cycles-pp.copy_mc_enhanced_fast_string
1.22 -0.1 1.16 perf-profile.self.cycles-pp.anon_vma_interval_tree_insert
0.81 ± 2% -0.0 0.76 ± 2% perf-profile.self.cycles-pp.rwsem_spin_on_owner
0.64 -0.0 0.61 perf-profile.self.cycles-pp.__anon_vma_interval_tree_remove
0.84 -0.0 0.81 perf-profile.self.cycles-pp.__rmqueue_pcplist
0.54 -0.0 0.51 perf-profile.self.cycles-pp._raw_spin_lock
0.17 ± 5% -0.0 0.14 ± 3% perf-profile.self.cycles-pp.copy_pte_range
0.38 -0.0 0.35 perf-profile.self.cycles-pp.anon_vma_clone
0.67 -0.0 0.65 perf-profile.self.cycles-pp.dup_mmap
0.46 -0.0 0.43 perf-profile.self.cycles-pp.up_write
0.40 -0.0 0.38 perf-profile.self.cycles-pp.down_write
0.15 ± 2% -0.0 0.13 perf-profile.self.cycles-pp.update_sg_wakeup_stats
0.37 -0.0 0.36 perf-profile.self.cycles-pp.__memcg_slab_post_alloc_hook
0.10 -0.0 0.09 ± 5% perf-profile.self.cycles-pp._raw_spin_trylock
0.17 ± 2% -0.0 0.16 perf-profile.self.cycles-pp.kmem_cache_free
0.08 -0.0 0.07 perf-profile.self.cycles-pp.__anon_vma_interval_tree_augment_rotate
0.12 -0.0 0.11 perf-profile.self.cycles-pp.lru_add
0.06 +0.0 0.07 perf-profile.self.cycles-pp.rmqueue
0.18 ± 2% +0.0 0.21 perf-profile.self.cycles-pp.get_page_from_freelist
0.26 ± 4% +0.0 0.29 perf-profile.self.cycles-pp.zap_pte_range
0.05 +0.0 0.08 ± 5% perf-profile.self.cycles-pp.smp_call_function_many_cond
0.10 ± 7% +0.0 0.14 ± 4% perf-profile.self.cycles-pp.__free_one_page
0.14 ± 3% +0.1 0.19 ± 3% perf-profile.self.cycles-pp.free_pcppages_bulk
0.05 +0.1 0.11 perf-profile.self.cycles-pp.update_sg_lb_stats
0.12 ± 7% +0.1 0.22 ± 6% perf-profile.self.cycles-pp.__del_page_from_free_list
62.83 +0.7 63.50 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