* [linus:master] [mm] 94962b2628: will-it-scale.per_thread_ops 2.1% regression
@ 2026-02-18 4:32 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-02-18 4:32 UTC (permalink / raw)
To: Ankur Arora
Cc: oe-lkp, lkp, linux-kernel, Andrew Morton, David Hildenbrand,
Andy Lutomirski, Borislav Petkov (AMD),
Boris Ostrovsky, H. Peter Anvin, Ingo Molnar,
Konrad Rzessutek Wilk, Lance Yang, Liam R. Howlett, Li Zhe,
Lorenzo Stoakes, Mateusz Guzik, Matthew Wilcox, Michal Hocko,
Mike Rapoport, Peter Zijlstra, Raghavendra K T,
Suren Baghdasaryan, Thomas Gleixner, Vlastimil Babka, linux-mm,
oliver.sang
Hello,
we reported
"[linux-next:master] [mm] 94962b2628: will-it-scale.per_process_ops 4.8% improvement"
on
https://lore.kernel.org/all/202601312034.df465f26-lkp@intel.com/
now we notice a small regression. report this just FYI what we observed in our
tests.
(previous reported improvement as well as another improvement are also recorded
in this report)
kernel test robot noticed a 2.1% regression of will-it-scale.per_thread_ops on:
commit: 94962b2628e6af2c48be6ebdf9f76add28d60ecc ("mm: folio_zero_user: clear page ranges")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
[still regression on linus/master 9702969978695d9a699a1f34771580cdbb153b33]
[still regression on linux-next/master 350adaf7fde9fdbd9aeed6d442a9ae90c6a3ab97]
testcase: will-it-scale
config: x86_64-rhel-9.4
compiler: gcc-14
test machine: 224 threads 4 sockets Intel(R) Xeon(R) Platinum 8380H CPU @ 2.90GHz (Cooper Lake) with 192G memory
parameters:
nr_task: 100%
mode: thread
test: page_fault1
cpufreq_governor: performance
In addition to that, the commit also has significant impact on the following tests:
+------------------+---------------------------------------------------------------+
| testcase: change | will-it-scale: will-it-scale.per_thread_ops 7.7% improvement |
| test parameters | cpufreq_governor=performance |
| | mode=thread |
| | nr_task=100% |
| | test=page_fault1 |
+------------------+---------------------------------------------------------------+
| testcase: change | will-it-scale: will-it-scale.per_process_ops 4.8% improvement |
| test parameters | cpufreq_governor=performance |
| | mode=process |
| | nr_task=100% |
| | test=page_fault1 |
+------------------+---------------------------------------------------------------+
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/202602181113.b28c053b-lkp@intel.com
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260218/202602181113.b28c053b-lkp@intel.com
=========================================================================================
compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase:
gcc-14/performance/x86_64-rhel-9.4/thread/100%/debian-13-x86_64-20250902.cgz/lkp-cpl-4sp2/page_fault1/will-it-scale
commit:
9890ecab6a ("mm: folio_zero_user: clear pages sequentially")
94962b2628 ("mm: folio_zero_user: clear page ranges")
9890ecab6ad9c0d3 94962b2628e6af2c48be6ebdf9f
---------------- ---------------------------
%stddev %change %stddev
\ | \
30035370 -2.1% 29406354 will-it-scale.224.threads
78.68 +4.0% 81.86 will-it-scale.224.threads_idle
134086 -2.1% 131277 will-it-scale.per_thread_ops
30035370 -2.1% 29406354 will-it-scale.workload
152.57 ± 2% +7.1% 163.40 perf-sched.total_wait_and_delay.average.ms
152.51 ± 2% +7.1% 163.34 perf-sched.total_wait_time.average.ms
152.57 ± 2% +7.1% 163.40 perf-sched.wait_and_delay.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown]
152.51 ± 2% +7.1% 163.34 perf-sched.wait_time.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown]
74.61 -39.0 35.56 perf-profile.calltrace.cycles-pp.folio_zero_user.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault
80.40 -11.9 68.48 perf-profile.calltrace.cycles-pp.testcase
76.97 -10.2 66.78 perf-profile.calltrace.cycles-pp.asm_exc_page_fault.testcase
76.85 -10.1 66.72 perf-profile.calltrace.cycles-pp.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
76.85 -10.1 66.72 perf-profile.calltrace.cycles-pp.exc_page_fault.asm_exc_page_fault.testcase
76.78 -10.1 66.66 perf-profile.calltrace.cycles-pp.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
76.77 -10.1 66.65 perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
76.75 -10.1 66.64 perf-profile.calltrace.cycles-pp.__do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault
76.15 -9.9 66.30 perf-profile.calltrace.cycles-pp.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
5.86 -5.9 0.00 perf-profile.calltrace.cycles-pp.__cond_resched.folio_zero_user.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page.__handle_mm_fault
1.03 -0.1 0.92 perf-profile.calltrace.cycles-pp.vma_alloc_folio_noprof.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault
1.00 -0.1 0.90 perf-profile.calltrace.cycles-pp.alloc_pages_mpol.vma_alloc_folio_noprof.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page.__handle_mm_fault
1.00 -0.1 0.90 perf-profile.calltrace.cycles-pp.__alloc_frozen_pages_noprof.alloc_pages_mpol.vma_alloc_folio_noprof.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page
0.99 -0.1 0.89 perf-profile.calltrace.cycles-pp.get_page_from_freelist.__alloc_frozen_pages_noprof.alloc_pages_mpol.vma_alloc_folio_noprof.vma_alloc_anon_folio_pmd
0.93 -0.1 0.85 perf-profile.calltrace.cycles-pp.prep_new_page.get_page_from_freelist.__alloc_frozen_pages_noprof.alloc_pages_mpol.vma_alloc_folio_noprof
0.37 ± 71% +0.4 0.81 ± 19% perf-profile.calltrace.cycles-pp.tick_nohz_handler.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt
0.71 ± 19% +0.5 1.20 ± 17% perf-profile.calltrace.cycles-pp.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt
0.81 ± 14% +0.6 1.42 ± 12% perf-profile.calltrace.cycles-pp.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.pv_native_safe_halt
0.82 ± 14% +0.6 1.43 ± 12% perf-profile.calltrace.cycles-pp.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.pv_native_safe_halt.acpi_safe_halt
0.00 +0.7 0.69 ± 16% perf-profile.calltrace.cycles-pp.update_process_times.tick_nohz_handler.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt
1.14 ± 9% +0.9 2.04 ± 7% perf-profile.calltrace.cycles-pp.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.pv_native_safe_halt.acpi_safe_halt.acpi_idle_do_entry
0.85 +0.9 1.76 perf-profile.calltrace.cycles-pp.free_unref_folios.folios_put_refs.free_pages_and_swap_cache.__tlb_batch_free_encoded_pages.tlb_finish_mmu
0.93 +1.0 1.92 perf-profile.calltrace.cycles-pp.folios_put_refs.free_pages_and_swap_cache.__tlb_batch_free_encoded_pages.tlb_finish_mmu.vms_clear_ptes
0.94 +1.0 1.94 perf-profile.calltrace.cycles-pp.__tlb_batch_free_encoded_pages.tlb_finish_mmu.vms_clear_ptes.vms_complete_munmap_vmas.do_vmi_align_munmap
0.94 +1.0 1.94 perf-profile.calltrace.cycles-pp.free_pages_and_swap_cache.__tlb_batch_free_encoded_pages.tlb_finish_mmu.vms_clear_ptes.vms_complete_munmap_vmas
1.32 ± 8% +1.1 2.39 ± 6% perf-profile.calltrace.cycles-pp.pv_native_safe_halt.acpi_safe_halt.acpi_idle_do_entry.acpi_idle_enter.cpuidle_enter_state
1.02 +1.1 2.12 perf-profile.calltrace.cycles-pp.tlb_finish_mmu.vms_clear_ptes.vms_complete_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap
1.11 +1.2 2.28 perf-profile.calltrace.cycles-pp.vms_clear_ptes.vms_complete_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap
1.12 +1.2 2.31 perf-profile.calltrace.cycles-pp.vms_complete_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap
1.15 +1.2 2.35 perf-profile.calltrace.cycles-pp.do_vmi_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe
1.15 +1.2 2.35 perf-profile.calltrace.cycles-pp.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64
1.19 +1.2 2.40 perf-profile.calltrace.cycles-pp.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
1.19 +1.2 2.40 perf-profile.calltrace.cycles-pp.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
1.20 +1.2 2.40 perf-profile.calltrace.cycles-pp.__munmap
1.19 +1.2 2.40 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
1.19 +1.2 2.40 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__munmap
17.66 +10.3 27.92 perf-profile.calltrace.cycles-pp.acpi_safe_halt.acpi_idle_do_entry.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter
17.67 +10.3 27.93 perf-profile.calltrace.cycles-pp.acpi_idle_do_entry.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call
17.67 +10.3 27.95 perf-profile.calltrace.cycles-pp.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle
17.71 +10.3 28.02 perf-profile.calltrace.cycles-pp.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry
17.72 +10.3 28.04 perf-profile.calltrace.cycles-pp.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary
17.97 +10.6 28.55 perf-profile.calltrace.cycles-pp.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary.common_startup_64
18.02 +10.6 28.64 perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.common_startup_64
18.02 +10.6 28.65 perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.common_startup_64
18.02 +10.6 28.65 perf-profile.calltrace.cycles-pp.start_secondary.common_startup_64
18.10 +10.7 28.76 perf-profile.calltrace.cycles-pp.common_startup_64
33.38 +19.1 52.51 perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt.pv_native_safe_halt.acpi_safe_halt.acpi_idle_do_entry.acpi_idle_enter
0.00 +23.8 23.83 perf-profile.calltrace.cycles-pp.asm_sysvec_call_function.folio_zero_user.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page.__handle_mm_fault
0.68 +35.4 36.07 perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt.folio_zero_user.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page.__handle_mm_fault
80.51 -12.0 68.53 perf-profile.children.cycles-pp.testcase
76.97 -10.2 66.78 perf-profile.children.cycles-pp.asm_exc_page_fault
76.85 -10.1 66.72 perf-profile.children.cycles-pp.do_user_addr_fault
76.85 -10.1 66.72 perf-profile.children.cycles-pp.exc_page_fault
76.78 -10.1 66.66 perf-profile.children.cycles-pp.handle_mm_fault
76.77 -10.1 66.65 perf-profile.children.cycles-pp.__handle_mm_fault
76.75 -10.1 66.64 perf-profile.children.cycles-pp.__do_huge_pmd_anonymous_page
76.16 -9.9 66.30 perf-profile.children.cycles-pp.vma_alloc_anon_folio_pmd
75.05 -9.7 65.31 perf-profile.children.cycles-pp.folio_zero_user
5.90 -5.9 0.00 perf-profile.children.cycles-pp.__cond_resched
1.25 -0.2 1.05 perf-profile.children.cycles-pp.alloc_pages_mpol
1.24 -0.2 1.05 perf-profile.children.cycles-pp.__alloc_frozen_pages_noprof
1.10 -0.1 0.96 perf-profile.children.cycles-pp.get_page_from_freelist
1.03 -0.1 0.92 perf-profile.children.cycles-pp.vma_alloc_folio_noprof
0.25 -0.1 0.14 ± 4% perf-profile.children.cycles-pp.map_anon_folio_pmd_pf
0.27 ± 2% -0.1 0.16 ± 2% perf-profile.children.cycles-pp.pte_alloc_one
0.26 ± 2% -0.1 0.16 ± 2% perf-profile.children.cycles-pp.alloc_pages_noprof
0.23 ± 7% -0.1 0.13 ± 5% perf-profile.children.cycles-pp.task_tick_fair
0.98 -0.1 0.89 perf-profile.children.cycles-pp.prep_new_page
0.16 ± 3% -0.1 0.10 ± 5% perf-profile.children.cycles-pp.map_anon_folio_pmd_nopf
0.08 ± 13% -0.1 0.02 ± 99% perf-profile.children.cycles-pp.update_cfs_group
0.09 ± 5% -0.0 0.05 ± 8% perf-profile.children.cycles-pp.__memcg_kmem_charge_page
0.08 ± 6% -0.0 0.04 ± 44% perf-profile.children.cycles-pp.rmqueue
0.10 ± 9% -0.0 0.07 perf-profile.children.cycles-pp.update_load_avg
0.09 ± 4% -0.0 0.06 ± 8% perf-profile.children.cycles-pp.__folio_batch_add_and_move
0.08 ± 5% -0.0 0.05 ± 8% perf-profile.children.cycles-pp.folio_batch_move_lru
0.07 ± 5% -0.0 0.04 ± 44% perf-profile.children.cycles-pp.its_return_thunk
0.08 -0.0 0.05 ± 8% perf-profile.children.cycles-pp.mod_node_page_state
0.11 ± 3% -0.0 0.09 ± 4% perf-profile.children.cycles-pp.native_irq_return_iret
0.05 +0.0 0.07 ± 5% perf-profile.children.cycles-pp.down_write_killable
0.05 +0.0 0.07 ± 5% perf-profile.children.cycles-pp.rwsem_down_write_slowpath
0.09 ± 4% +0.0 0.11 ± 7% perf-profile.children.cycles-pp.perf_rotate_context
0.05 ± 8% +0.0 0.08 ± 12% perf-profile.children.cycles-pp.update_rq_clock_task
0.05 +0.0 0.08 ± 4% perf-profile.children.cycles-pp.free_tail_page_prepare
0.05 +0.0 0.08 ± 8% perf-profile.children.cycles-pp.__schedule
0.05 +0.0 0.09 perf-profile.children.cycles-pp.vm_mmap_pgoff
0.07 ± 16% +0.0 0.11 ± 6% perf-profile.children.cycles-pp.rcu_pending
0.05 +0.0 0.09 ± 5% perf-profile.children.cycles-pp.sched_balance_find_src_group
0.02 ± 99% +0.0 0.07 ± 13% perf-profile.children.cycles-pp.arch_scale_freq_tick
0.06 ± 6% +0.0 0.11 ± 6% perf-profile.children.cycles-pp.sched_balance_domains
0.04 ± 71% +0.0 0.08 ± 13% perf-profile.children.cycles-pp.kthread
0.03 ±141% +0.0 0.08 ± 29% perf-profile.children.cycles-pp.ktime_get_update_offsets_now
0.04 ± 71% +0.0 0.08 ± 13% perf-profile.children.cycles-pp.ret_from_fork
0.04 ± 71% +0.0 0.08 ± 13% perf-profile.children.cycles-pp.ret_from_fork_asm
0.08 ± 17% +0.0 0.13 ± 13% perf-profile.children.cycles-pp.rcu_sched_clock_irq
0.05 ± 7% +0.0 0.10 perf-profile.children.cycles-pp.__mmap
0.00 +0.1 0.05 ± 7% perf-profile.children.cycles-pp.__pick_next_task
0.00 +0.1 0.05 ± 7% perf-profile.children.cycles-pp.should_flush_tlb
0.04 ± 44% +0.1 0.09 ± 5% perf-profile.children.cycles-pp.update_sd_lb_stats
0.02 ± 99% +0.1 0.08 ± 8% perf-profile.children.cycles-pp.free_pcppages_bulk
0.00 +0.1 0.05 ± 8% perf-profile.children.cycles-pp.update_irq_load_avg
0.00 +0.1 0.06 ± 9% perf-profile.children.cycles-pp.free_frozen_page_commit
0.00 +0.1 0.06 ± 8% perf-profile.children.cycles-pp.do_mmap
0.00 +0.1 0.06 ± 13% perf-profile.children.cycles-pp.__get_next_timer_interrupt
0.06 ± 6% +0.1 0.12 ± 4% perf-profile.children.cycles-pp.tick_irq_enter
0.00 +0.1 0.06 ± 9% perf-profile.children.cycles-pp.__folio_unqueue_deferred_split
0.00 +0.1 0.06 perf-profile.children.cycles-pp.check_cpu_stall
0.00 +0.1 0.06 perf-profile.children.cycles-pp.lru_gen_del_folio
0.07 ± 5% +0.1 0.13 ± 2% perf-profile.children.cycles-pp.sched_balance_rq
0.07 ± 11% +0.1 0.13 ± 20% perf-profile.children.cycles-pp.clockevents_program_event
0.00 +0.1 0.06 ± 6% perf-profile.children.cycles-pp.__page_cache_release
0.08 ± 8% +0.1 0.15 ± 12% perf-profile.children.cycles-pp.sched_balance_update_blocked_averages
0.00 +0.1 0.07 ± 7% perf-profile.children.cycles-pp.schedule
0.07 ± 6% +0.1 0.14 ± 4% perf-profile.children.cycles-pp.irq_enter_rcu
0.08 ± 8% +0.1 0.15 ± 10% perf-profile.children.cycles-pp.sched_balance_softirq
0.08 +0.1 0.15 ± 3% perf-profile.children.cycles-pp.zap_huge_pmd
0.08 +0.1 0.15 ± 3% perf-profile.children.cycles-pp.zap_pmd_range
0.00 +0.1 0.07 ± 6% perf-profile.children.cycles-pp.update_sg_lb_stats
0.08 ± 4% +0.1 0.16 ± 3% perf-profile.children.cycles-pp.unmap_vmas
0.08 +0.1 0.16 ± 3% perf-profile.children.cycles-pp.unmap_page_range
0.18 ± 2% +0.1 0.26 ± 2% perf-profile.children.cycles-pp.asm_sysvec_call_function_single
0.09 ± 4% +0.1 0.18 perf-profile.children.cycles-pp.flush_tlb_mm_range
0.09 ± 5% +0.1 0.18 perf-profile.children.cycles-pp.on_each_cpu_cond_mask
0.09 ± 5% +0.1 0.18 perf-profile.children.cycles-pp.smp_call_function_many_cond
0.25 ± 12% +0.1 0.36 ± 14% perf-profile.children.cycles-pp.perf_mux_hrtimer_handler
0.05 ±141% +0.1 0.17 ± 62% perf-profile.children.cycles-pp.timekeeping_max_deferment
0.17 ± 5% +0.1 0.31 ± 2% perf-profile.children.cycles-pp.handle_softirqs
0.19 ± 4% +0.1 0.34 ± 2% perf-profile.children.cycles-pp.__irq_exit_rcu
0.15 ± 51% +0.2 0.32 ± 46% perf-profile.children.cycles-pp.tick_nohz_next_event
0.16 ± 46% +0.2 0.36 ± 42% perf-profile.children.cycles-pp.tick_nohz_get_sleep_length
0.24 ± 7% +0.2 0.44 ± 11% perf-profile.children.cycles-pp.ktime_get
0.22 ± 34% +0.2 0.45 ± 33% perf-profile.children.cycles-pp.menu_select
1.41 ± 8% +0.4 1.82 ± 9% perf-profile.children.cycles-pp.hrtimer_interrupt
1.42 ± 8% +0.4 1.84 ± 9% perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt
1.76 ± 5% +0.7 2.47 ± 6% perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt
0.85 +0.9 1.77 perf-profile.children.cycles-pp.free_unref_folios
0.93 +1.0 1.92 perf-profile.children.cycles-pp.folios_put_refs
0.94 +1.0 1.94 perf-profile.children.cycles-pp.__tlb_batch_free_encoded_pages
0.94 +1.0 1.94 perf-profile.children.cycles-pp.free_pages_and_swap_cache
1.02 +1.1 2.12 perf-profile.children.cycles-pp.tlb_finish_mmu
1.11 +1.2 2.28 perf-profile.children.cycles-pp.vms_clear_ptes
1.12 +1.2 2.31 perf-profile.children.cycles-pp.vms_complete_munmap_vmas
1.15 +1.2 2.35 perf-profile.children.cycles-pp.do_vmi_munmap
1.15 +1.2 2.35 perf-profile.children.cycles-pp.do_vmi_align_munmap
1.19 +1.2 2.40 perf-profile.children.cycles-pp.__x64_sys_munmap
1.19 +1.2 2.40 perf-profile.children.cycles-pp.__vm_munmap
1.20 +1.2 2.40 perf-profile.children.cycles-pp.__munmap
1.31 +1.3 2.58 perf-profile.children.cycles-pp.do_syscall_64
1.31 +1.3 2.58 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
17.74 +10.3 28.04 perf-profile.children.cycles-pp.pv_native_safe_halt
17.74 +10.3 28.04 perf-profile.children.cycles-pp.acpi_safe_halt
17.74 +10.3 28.05 perf-profile.children.cycles-pp.acpi_idle_do_entry
17.75 +10.3 28.06 perf-profile.children.cycles-pp.acpi_idle_enter
17.79 +10.3 28.13 perf-profile.children.cycles-pp.cpuidle_enter_state
17.80 +10.3 28.15 perf-profile.children.cycles-pp.cpuidle_enter
18.05 +10.6 28.66 perf-profile.children.cycles-pp.cpuidle_idle_call
18.02 +10.6 28.65 perf-profile.children.cycles-pp.start_secondary
18.10 +10.7 28.76 perf-profile.children.cycles-pp.common_startup_64
18.10 +10.7 28.76 perf-profile.children.cycles-pp.cpu_startup_entry
18.10 +10.7 28.76 perf-profile.children.cycles-pp.do_idle
0.27 ± 2% +11.8 12.06 perf-profile.children.cycles-pp.asm_sysvec_call_function
18.16 +27.6 45.73 perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt
5.48 -5.5 0.00 perf-profile.self.cycles-pp.__cond_resched
68.70 -3.8 64.86 perf-profile.self.cycles-pp.folio_zero_user
3.54 -1.8 1.75 perf-profile.self.cycles-pp.testcase
0.93 -0.1 0.85 perf-profile.self.cycles-pp.prep_new_page
0.08 ± 13% -0.1 0.02 ± 99% perf-profile.self.cycles-pp.update_cfs_group
0.08 -0.0 0.05 ± 8% perf-profile.self.cycles-pp.mod_node_page_state
0.11 ± 3% -0.0 0.09 ± 4% perf-profile.self.cycles-pp.native_irq_return_iret
0.02 ± 99% +0.0 0.07 ± 13% perf-profile.self.cycles-pp.arch_scale_freq_tick
0.06 ± 11% +0.0 0.10 ± 15% perf-profile.self.cycles-pp.sched_balance_update_blocked_averages
0.07 ± 5% +0.0 0.12 ± 3% perf-profile.self.cycles-pp.asm_sysvec_apic_timer_interrupt
0.00 +0.1 0.05 perf-profile.self.cycles-pp.should_flush_tlb
0.00 +0.1 0.05 ± 7% perf-profile.self.cycles-pp.__folio_unqueue_deferred_split
0.00 +0.1 0.05 ± 8% perf-profile.self.cycles-pp.update_sg_lb_stats
0.02 ± 99% +0.1 0.08 perf-profile.self.cycles-pp.free_tail_page_prepare
0.00 +0.1 0.06 perf-profile.self.cycles-pp.check_cpu_stall
0.00 +0.1 0.06 ± 11% perf-profile.self.cycles-pp.menu_select
0.02 ±141% +0.1 0.10 ± 3% perf-profile.self.cycles-pp.smp_call_function_many_cond
0.05 ±141% +0.1 0.17 ± 63% perf-profile.self.cycles-pp.timekeeping_max_deferment
0.22 ± 8% +0.2 0.40 ± 12% perf-profile.self.cycles-pp.ktime_get
0.78 +0.9 1.64 perf-profile.self.cycles-pp.free_unref_folios
16.48 +9.3 25.78 perf-profile.self.cycles-pp.pv_native_safe_halt
***************************************************************************************************
=========================================================================================
compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase:
gcc-14/performance/x86_64-rhel-9.4/thread/100%/debian-13-x86_64-20250902.cgz/lkp-ivb-2ep2/page_fault1/will-it-scale
commit:
9890ecab6a ("mm: folio_zero_user: clear pages sequentially")
94962b2628 ("mm: folio_zero_user: clear page ranges")
9890ecab6ad9c0d3 94962b2628e6af2c48be6ebdf9f
---------------- ---------------------------
%stddev %change %stddev
\ | \
13476248 +7.7% 14514344 will-it-scale.48.threads
33.34 +22.8% 40.94 will-it-scale.48.threads_idle
280755 +7.7% 302381 will-it-scale.per_thread_ops
13476248 +7.7% 14514344 will-it-scale.workload
150643 -20.5% 119694 meminfo.Shmem
7092 +16.0% 8225 uptime.idle
4.869e+09 +22.5% 5.967e+09 cpuidle..time
5918255 +98.3% 11734444 cpuidle..usage
33.98 +22.4% 41.59 vmstat.cpu.id
31.48 -11.3% 27.91 vmstat.procs.r
65679 -4.4% 62801 vmstat.system.in
8297721 +7.7% 8938848 numa-numastat.node0.local_node
8328248 +7.6% 8957443 numa-numastat.node0.numa_hit
8311573 +6.9% 8888746 numa-numastat.node1.local_node
8330871 +7.1% 8919765 numa-numastat.node1.numa_hit
8328220 +7.6% 8957249 numa-vmstat.node0.numa_hit
8297693 +7.7% 8938640 numa-vmstat.node0.numa_local
8331000 +7.1% 8919461 numa-vmstat.node1.numa_hit
8311702 +6.9% 8888442 numa-vmstat.node1.numa_local
7083 ± 2% +34.2% 9504 ± 5% perf-c2c.DRAM.local
670.17 ± 9% +60.2% 1073 ± 8% perf-c2c.DRAM.remote
104.17 ± 10% +62.9% 169.67 ± 6% perf-c2c.HIT.remote
683.83 ± 3% +45.7% 996.50 ± 5% perf-c2c.HITM.local
328.00 ± 6% +65.5% 543.00 ± 11% perf-c2c.HITM.remote
33.69 +7.6 41.27 mpstat.cpu.all.idle%
2.02 +0.2 2.20 mpstat.cpu.all.irq%
0.11 ± 2% +0.0 0.12 ± 3% mpstat.cpu.all.soft%
59.81 -7.4 52.43 mpstat.cpu.all.sys%
4.37 -0.4 3.97 mpstat.cpu.all.usr%
69.61 -10.6% 62.22 mpstat.max_utilization_pct
1993 -11.2% 1770 turbostat.Avg_MHz
66.61 -7.4 59.17 turbostat.Busy%
0.08 ± 24% +0.1 0.16 ± 6% turbostat.C1%
0.33 +11.4 11.70 turbostat.C1E%
33.05 -3.9 29.12 turbostat.C6%
23.22 +74.0% 40.42 turbostat.CPU%c1
10.16 -95.9% 0.42 ± 24% turbostat.CPU%c6
23619013 -4.8% 22494143 turbostat.IRQ
786722 ± 2% -38.7% 482404 turbostat.NMI
48.75 +1.2% 49.32 turbostat.RAMWatt
1085441 +1.4% 1100796 proc-vmstat.nr_active_anon
1042491 +2.1% 1064848 proc-vmstat.nr_anon_pages
4927 +3.2% 5087 proc-vmstat.nr_page_table_pages
37642 -20.5% 29926 proc-vmstat.nr_shmem
1085440 +1.4% 1100791 proc-vmstat.nr_zone_active_anon
16658966 +7.3% 17878556 proc-vmstat.numa_hit
16609098 +7.3% 17828945 proc-vmstat.numa_local
4.064e+09 +7.7% 4.378e+09 proc-vmstat.pgalloc_normal
8715038 +6.9% 9316930 proc-vmstat.pgfault
4.064e+09 +7.7% 4.378e+09 proc-vmstat.pgfree
7921062 +7.7% 8533004 proc-vmstat.thp_fault_alloc
197820 -25.8% 146873 sched_debug.cfs_rq:/.avg_vruntime.avg
158878 -33.4% 105864 ± 3% sched_debug.cfs_rq:/.avg_vruntime.min
0.65 ± 9% -22.2% 0.51 ± 7% sched_debug.cfs_rq:/.h_nr_queued.avg
0.65 ± 9% -22.3% 0.51 ± 7% sched_debug.cfs_rq:/.h_nr_runnable.avg
0.64 ± 9% -21.7% 0.50 ± 6% sched_debug.cfs_rq:/.nr_queued.avg
639.38 ± 3% -12.0% 562.89 sched_debug.cfs_rq:/.runnable_avg.avg
1149 ± 4% -14.0% 988.67 ± 7% sched_debug.cfs_rq:/.runnable_avg.max
636.30 ± 3% -11.7% 561.67 sched_debug.cfs_rq:/.util_avg.avg
385.99 ± 9% -30.5% 268.29 ± 7% sched_debug.cfs_rq:/.util_est.avg
197375 -25.7% 146615 sched_debug.cfs_rq:/.zero_vruntime.avg
158380 -33.3% 105649 ± 3% sched_debug.cfs_rq:/.zero_vruntime.min
4057 ± 8% -20.8% 3212 ± 6% sched_debug.cpu.curr->pid.avg
2909 ± 5% +7.7% 3132 sched_debug.cpu.curr->pid.stddev
0.65 ± 9% -21.8% 0.51 ± 7% sched_debug.cpu.nr_running.avg
0.30 ± 19% +44.5% 0.43 ± 8% sched_debug.cpu.nr_uninterruptible.avg
569.07 +40.3% 798.46 perf-stat.i.MPKI
3.989e+08 -19.7% 3.203e+08 perf-stat.i.branch-instructions
1.97 -0.4 1.56 perf-stat.i.branch-miss-rate%
10443546 -22.9% 8048304 perf-stat.i.branch-misses
8.814e+08 +7.5% 9.479e+08 perf-stat.i.cache-misses
9.207e+08 +7.2% 9.871e+08 perf-stat.i.cache-references
60.91 +15.1% 70.11 perf-stat.i.cpi
9.433e+10 -11.7% 8.333e+10 perf-stat.i.cpu-cycles
212.68 -8.8% 193.98 perf-stat.i.cpu-migrations
107.56 -17.6% 88.59 perf-stat.i.cycles-between-cache-misses
1.888e+09 -18.5% 1.538e+09 perf-stat.i.instructions
0.02 -7.0% 0.02 perf-stat.i.ipc
28563 +6.9% 30537 perf-stat.i.minor-faults
28564 +6.9% 30538 perf-stat.i.page-faults
466.73 +32.0% 616.13 perf-stat.overall.MPKI
2.62 -0.1 2.51 perf-stat.overall.branch-miss-rate%
49.95 +8.4% 54.16 perf-stat.overall.cpi
107.02 -17.9% 87.91 perf-stat.overall.cycles-between-cache-misses
0.02 -7.8% 0.02 perf-stat.overall.ipc
42233 -24.3% 31976 perf-stat.overall.path-length
3.977e+08 -19.7% 3.193e+08 perf-stat.ps.branch-instructions
10402795 -23.1% 7998989 perf-stat.ps.branch-misses
8.784e+08 +7.6% 9.448e+08 perf-stat.ps.cache-misses
9.176e+08 +7.2% 9.838e+08 perf-stat.ps.cache-references
9.401e+10 -11.7% 8.305e+10 perf-stat.ps.cpu-cycles
211.95 -8.8% 193.24 perf-stat.ps.cpu-migrations
1.882e+09 -18.5% 1.533e+09 perf-stat.ps.instructions
28465 +6.9% 30433 perf-stat.ps.minor-faults
28466 +6.9% 30434 perf-stat.ps.page-faults
5.692e+11 -18.5% 4.641e+11 perf-stat.total.instructions
79.26 -44.2 35.05 perf-profile.calltrace.cycles-pp.folio_zero_user.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault
88.02 -10.0 78.04 perf-profile.calltrace.cycles-pp.testcase
81.83 -7.7 74.11 perf-profile.calltrace.cycles-pp.asm_exc_page_fault.testcase
81.76 -7.7 74.06 perf-profile.calltrace.cycles-pp.exc_page_fault.asm_exc_page_fault.testcase
81.75 -7.7 74.06 perf-profile.calltrace.cycles-pp.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
81.60 -7.7 73.95 perf-profile.calltrace.cycles-pp.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
81.53 -7.6 73.89 perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
81.50 -7.6 73.87 perf-profile.calltrace.cycles-pp.__do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault
80.88 -7.5 73.38 perf-profile.calltrace.cycles-pp.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
1.32 -0.2 1.10 perf-profile.calltrace.cycles-pp.vma_alloc_folio_noprof.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault
1.30 -0.2 1.08 perf-profile.calltrace.cycles-pp.alloc_pages_mpol.vma_alloc_folio_noprof.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page.__handle_mm_fault
1.29 -0.2 1.08 perf-profile.calltrace.cycles-pp.__alloc_frozen_pages_noprof.alloc_pages_mpol.vma_alloc_folio_noprof.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page
1.28 -0.2 1.07 perf-profile.calltrace.cycles-pp.get_page_from_freelist.__alloc_frozen_pages_noprof.alloc_pages_mpol.vma_alloc_folio_noprof.vma_alloc_anon_folio_pmd
1.20 -0.2 1.01 perf-profile.calltrace.cycles-pp.prep_new_page.get_page_from_freelist.__alloc_frozen_pages_noprof.alloc_pages_mpol.vma_alloc_folio_noprof
1.19 +1.4 2.54 perf-profile.calltrace.cycles-pp.free_unref_folios.folios_put_refs.free_pages_and_swap_cache.__tlb_batch_free_encoded_pages.tlb_finish_mmu
1.26 +1.4 2.69 perf-profile.calltrace.cycles-pp.folios_put_refs.free_pages_and_swap_cache.__tlb_batch_free_encoded_pages.tlb_finish_mmu.vms_clear_ptes
1.27 +1.4 2.70 perf-profile.calltrace.cycles-pp.free_pages_and_swap_cache.__tlb_batch_free_encoded_pages.tlb_finish_mmu.vms_clear_ptes.vms_complete_munmap_vmas
1.27 +1.4 2.71 perf-profile.calltrace.cycles-pp.__tlb_batch_free_encoded_pages.tlb_finish_mmu.vms_clear_ptes.vms_complete_munmap_vmas.do_vmi_align_munmap
1.30 +1.5 2.80 perf-profile.calltrace.cycles-pp.tlb_finish_mmu.vms_clear_ptes.vms_complete_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap
1.38 +1.6 2.95 perf-profile.calltrace.cycles-pp.vms_clear_ptes.vms_complete_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap
1.39 +1.6 2.98 perf-profile.calltrace.cycles-pp.vms_complete_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap
1.41 +1.6 3.03 perf-profile.calltrace.cycles-pp.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64
1.42 +1.6 3.04 perf-profile.calltrace.cycles-pp.do_vmi_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe
1.45 +1.6 3.08 perf-profile.calltrace.cycles-pp.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
1.45 +1.6 3.08 perf-profile.calltrace.cycles-pp.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
1.45 +1.6 3.09 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
1.45 +1.6 3.09 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__munmap
1.46 +1.6 3.10 perf-profile.calltrace.cycles-pp.__munmap
9.68 +7.7 17.36 perf-profile.calltrace.cycles-pp.intel_idle.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle
9.89 +7.8 17.68 perf-profile.calltrace.cycles-pp.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry
9.90 +7.8 17.70 perf-profile.calltrace.cycles-pp.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary
9.96 +7.9 17.81 perf-profile.calltrace.cycles-pp.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary.common_startup_64
10.02 +7.9 17.90 perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.common_startup_64
10.02 +7.9 17.90 perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.common_startup_64
10.02 +7.9 17.90 perf-profile.calltrace.cycles-pp.start_secondary.common_startup_64
10.19 +8.1 18.32 perf-profile.calltrace.cycles-pp.common_startup_64
0.00 +17.5 17.49 perf-profile.calltrace.cycles-pp.asm_sysvec_call_function.folio_zero_user.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page.__handle_mm_fault
0.74 ± 2% +56.7 57.45 perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt.folio_zero_user.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page.__handle_mm_fault
88.07 -10.0 78.08 perf-profile.children.cycles-pp.testcase
81.86 -7.7 74.15 perf-profile.children.cycles-pp.asm_exc_page_fault
81.78 -7.7 74.10 perf-profile.children.cycles-pp.exc_page_fault
81.77 -7.7 74.09 perf-profile.children.cycles-pp.do_user_addr_fault
81.62 -7.6 73.99 perf-profile.children.cycles-pp.handle_mm_fault
81.50 -7.6 73.87 perf-profile.children.cycles-pp.__do_huge_pmd_anonymous_page
81.55 -7.6 73.93 perf-profile.children.cycles-pp.__handle_mm_fault
80.88 -7.5 73.38 perf-profile.children.cycles-pp.vma_alloc_anon_folio_pmd
79.48 -7.3 72.21 perf-profile.children.cycles-pp.folio_zero_user
1.61 -0.3 1.33 perf-profile.children.cycles-pp.alloc_pages_mpol
1.60 -0.3 1.32 perf-profile.children.cycles-pp.__alloc_frozen_pages_noprof
1.48 -0.2 1.23 perf-profile.children.cycles-pp.get_page_from_freelist
1.32 -0.2 1.10 perf-profile.children.cycles-pp.vma_alloc_folio_noprof
1.33 -0.2 1.12 perf-profile.children.cycles-pp.prep_new_page
0.33 ± 2% -0.1 0.26 perf-profile.children.cycles-pp.pte_alloc_one
0.32 ± 2% -0.1 0.25 ± 2% perf-profile.children.cycles-pp.alloc_pages_noprof
0.72 ± 2% -0.1 0.66 ± 2% perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt
0.71 ± 2% -0.1 0.64 perf-profile.children.cycles-pp.hrtimer_interrupt
0.46 ± 3% -0.1 0.40 ± 4% perf-profile.children.cycles-pp.tick_nohz_handler
0.60 ± 2% -0.1 0.54 ± 2% perf-profile.children.cycles-pp.__hrtimer_run_queues
0.42 ± 3% -0.1 0.36 ± 3% perf-profile.children.cycles-pp.update_process_times
0.86 -0.1 0.80 perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt
0.22 ± 2% -0.0 0.18 ± 2% perf-profile.children.cycles-pp.map_anon_folio_pmd_pf
0.18 ± 3% -0.0 0.14 ± 3% perf-profile.children.cycles-pp.task_tick_fair
0.16 ± 4% -0.0 0.12 ± 4% perf-profile.children.cycles-pp.map_anon_folio_pmd_nopf
0.28 ± 2% -0.0 0.25 perf-profile.children.cycles-pp.sched_tick
0.07 ± 6% -0.0 0.04 ± 44% perf-profile.children.cycles-pp.__irqentry_text_end
0.09 ± 8% -0.0 0.06 ± 6% perf-profile.children.cycles-pp.__memcg_kmem_charge_page
0.12 ± 4% -0.0 0.10 ± 4% perf-profile.children.cycles-pp.rmqueue
0.07 ± 5% -0.0 0.04 ± 45% perf-profile.children.cycles-pp.folio_add_new_anon_rmap
0.13 ± 2% -0.0 0.10 ± 6% perf-profile.children.cycles-pp.kernel_init_pages
0.09 ± 5% -0.0 0.07 perf-profile.children.cycles-pp.__rmqueue_pcplist
0.10 -0.0 0.08 ± 4% perf-profile.children.cycles-pp.__perf_sw_event
0.10 -0.0 0.08 ± 5% perf-profile.children.cycles-pp.___perf_sw_event
0.08 ± 5% -0.0 0.07 perf-profile.children.cycles-pp.__folio_batch_add_and_move
0.05 +0.0 0.06 perf-profile.children.cycles-pp._raw_spin_lock_irqsave
0.06 ± 7% +0.0 0.08 ± 7% perf-profile.children.cycles-pp.__flush_smp_call_function_queue
0.09 ± 5% +0.0 0.11 ± 6% perf-profile.children.cycles-pp.__schedule
0.06 ± 6% +0.0 0.09 ± 5% perf-profile.children.cycles-pp.free_tail_page_prepare
0.00 +0.1 0.05 perf-profile.children.cycles-pp.__folio_unqueue_deferred_split
0.00 +0.1 0.05 ± 7% perf-profile.children.cycles-pp.__x64_sys_execve
0.00 +0.1 0.05 ± 7% perf-profile.children.cycles-pp.do_execveat_common
0.00 +0.1 0.05 ± 7% perf-profile.children.cycles-pp.execve
0.00 +0.1 0.05 ± 7% perf-profile.children.cycles-pp.free_frozen_page_commit
0.00 +0.1 0.06 ± 9% perf-profile.children.cycles-pp.__free_frozen_pages
0.03 ± 70% +0.1 0.09 ± 4% perf-profile.children.cycles-pp.menu_select
0.00 +0.1 0.06 perf-profile.children.cycles-pp.__page_cache_release
0.00 +0.1 0.06 perf-profile.children.cycles-pp.lru_gen_del_folio
0.00 +0.1 0.06 ± 11% perf-profile.children.cycles-pp.down_write_killable
0.00 +0.1 0.07 ± 11% perf-profile.children.cycles-pp.rwsem_down_write_slowpath
0.06 ± 9% +0.1 0.13 ± 5% perf-profile.children.cycles-pp.do_mmap
0.02 ± 99% +0.1 0.09 ± 5% perf-profile.children.cycles-pp.__mmap_region
0.06 ± 7% +0.1 0.14 ± 7% perf-profile.children.cycles-pp.zap_huge_pmd
0.07 ± 5% +0.1 0.15 ± 8% perf-profile.children.cycles-pp.zap_pmd_range
0.07 ± 5% +0.1 0.15 ± 4% perf-profile.children.cycles-pp.vm_mmap_pgoff
0.07 +0.1 0.15 ± 2% perf-profile.children.cycles-pp.__mmap
0.07 ± 5% +0.1 0.15 ± 9% perf-profile.children.cycles-pp.unmap_page_range
0.00 +0.1 0.08 ± 4% perf-profile.children.cycles-pp.on_each_cpu_cond_mask
0.00 +0.1 0.08 ± 4% perf-profile.children.cycles-pp.smp_call_function_many_cond
0.07 +0.1 0.15 ± 8% perf-profile.children.cycles-pp.unmap_vmas
0.00 +0.1 0.08 ± 5% perf-profile.children.cycles-pp.flush_tlb_mm_range
0.18 ± 17% +0.2 0.42 ± 11% perf-profile.children.cycles-pp.rest_init
0.18 ± 17% +0.2 0.42 ± 11% perf-profile.children.cycles-pp.start_kernel
0.18 ± 17% +0.2 0.42 ± 11% perf-profile.children.cycles-pp.x86_64_start_kernel
0.18 ± 17% +0.2 0.42 ± 11% perf-profile.children.cycles-pp.x86_64_start_reservations
1.20 +1.4 2.56 perf-profile.children.cycles-pp.free_unref_folios
1.27 +1.4 2.70 perf-profile.children.cycles-pp.folios_put_refs
1.27 +1.4 2.71 perf-profile.children.cycles-pp.free_pages_and_swap_cache
1.27 +1.4 2.71 perf-profile.children.cycles-pp.__tlb_batch_free_encoded_pages
1.30 +1.5 2.80 perf-profile.children.cycles-pp.tlb_finish_mmu
1.38 +1.6 2.95 perf-profile.children.cycles-pp.vms_clear_ptes
1.39 +1.6 2.98 perf-profile.children.cycles-pp.vms_complete_munmap_vmas
1.42 +1.6 3.04 perf-profile.children.cycles-pp.do_vmi_munmap
1.42 +1.6 3.04 perf-profile.children.cycles-pp.do_vmi_align_munmap
1.45 +1.6 3.09 perf-profile.children.cycles-pp.__x64_sys_munmap
1.45 +1.6 3.09 perf-profile.children.cycles-pp.__vm_munmap
1.46 +1.6 3.10 perf-profile.children.cycles-pp.__munmap
1.66 +1.8 3.48 perf-profile.children.cycles-pp.do_syscall_64
1.66 +1.8 3.48 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
10.02 +7.9 17.90 perf-profile.children.cycles-pp.start_secondary
9.85 +7.9 17.77 perf-profile.children.cycles-pp.intel_idle
10.08 +8.0 18.11 perf-profile.children.cycles-pp.cpuidle_enter
10.07 +8.0 18.11 perf-profile.children.cycles-pp.cpuidle_enter_state
10.13 +8.1 18.23 perf-profile.children.cycles-pp.cpuidle_idle_call
10.19 +8.1 18.32 perf-profile.children.cycles-pp.common_startup_64
10.19 +8.1 18.32 perf-profile.children.cycles-pp.cpu_startup_entry
10.19 +8.1 18.32 perf-profile.children.cycles-pp.do_idle
0.12 +8.7 8.80 perf-profile.children.cycles-pp.asm_sysvec_call_function
1.04 +28.3 29.34 perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt
77.74 -6.2 71.54 perf-profile.self.cycles-pp.folio_zero_user
6.11 -2.2 3.90 perf-profile.self.cycles-pp.testcase
1.19 -0.2 1.01 perf-profile.self.cycles-pp.prep_new_page
0.07 ± 6% -0.0 0.04 ± 44% perf-profile.self.cycles-pp.__irqentry_text_end
0.13 ± 2% -0.0 0.10 ± 5% perf-profile.self.cycles-pp.kernel_init_pages
0.08 -0.0 0.06 ± 7% perf-profile.self.cycles-pp.___perf_sw_event
0.07 ± 7% -0.0 0.05 perf-profile.self.cycles-pp.__rmqueue_pcplist
0.04 ± 44% +0.0 0.08 ± 4% perf-profile.self.cycles-pp.free_tail_page_prepare
0.00 +0.1 0.05 perf-profile.self.cycles-pp.smp_call_function_many_cond
0.00 +0.1 0.07 ± 8% perf-profile.self.cycles-pp.asm_sysvec_apic_timer_interrupt
1.13 +1.3 2.43 perf-profile.self.cycles-pp.free_unref_folios
9.85 +7.9 17.77 perf-profile.self.cycles-pp.intel_idle
***************************************************************************************************
=========================================================================================
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-ivb-2ep2/page_fault1/will-it-scale
commit:
9890ecab6a ("mm: folio_zero_user: clear pages sequentially")
94962b2628 ("mm: folio_zero_user: clear page ranges")
9890ecab6ad9c0d3 94962b2628e6af2c48be6ebdf9f
---------------- ---------------------------
%stddev %change %stddev
\ | \
13326899 +4.8% 13968231 will-it-scale.48.processes
277643 +4.8% 291004 will-it-scale.per_process_ops
13326899 +4.8% 13968231 will-it-scale.workload
188907 -20.7% 149831 meminfo.Shmem
2571826 ± 4% -9.8% 2320837 ± 6% numa-meminfo.node1.AnonPages.max
55533 -5.8% 52308 vmstat.system.in
0.05 +0.0 0.06 mpstat.cpu.all.soft%
7.97 +1.2 9.13 mpstat.cpu.all.usr%
0.50 ± 9% +66.5% 0.83 ± 11% perf-sched.sch_delay.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown]
0.50 ± 9% +66.5% 0.83 ± 11% perf-sched.total_sch_delay.average.ms
16857808 -5.8% 15880074 turbostat.IRQ
1047246 ± 3% -43.1% 596149 ± 2% turbostat.NMI
7632 ± 4% +53.0% 11676 perf-c2c.DRAM.local
336.17 ± 15% +172.4% 915.83 ± 12% perf-c2c.DRAM.remote
55.17 ± 28% +109.1% 115.33 ± 9% perf-c2c.HIT.remote
548.33 ± 7% +119.2% 1201 ± 4% perf-c2c.HITM.local
158.83 ± 6% +183.7% 450.67 ± 3% perf-c2c.HITM.remote
980465 -1.1% 969931 proc-vmstat.nr_active_anon
966522 -1.0% 956717 proc-vmstat.nr_file_pages
47257 -20.8% 37450 proc-vmstat.nr_shmem
980461 -1.1% 969926 proc-vmstat.nr_zone_active_anon
16479858 +4.5% 17219093 proc-vmstat.numa_hit
16430403 +4.5% 17165377 proc-vmstat.numa_local
4.02e+09 +4.8% 4.213e+09 proc-vmstat.pgalloc_normal
8603457 +4.3% 8969427 proc-vmstat.pgfault
4.02e+09 +4.8% 4.213e+09 proc-vmstat.pgfree
7834289 +4.8% 8210993 proc-vmstat.thp_fault_alloc
6455 ±141% +750.4% 54895 ± 70% sched_debug.cfs_rq:/.left_deadline.avg
309861 ±141% +750.4% 2634973 ± 70% sched_debug.cfs_rq:/.left_deadline.max
44256 ±141% +750.4% 376343 ± 70% sched_debug.cfs_rq:/.left_deadline.stddev
6455 ±141% +750.4% 54895 ± 70% sched_debug.cfs_rq:/.left_vruntime.avg
309855 ±141% +750.4% 2634967 ± 70% sched_debug.cfs_rq:/.left_vruntime.max
44255 ±141% +750.4% 376342 ± 70% sched_debug.cfs_rq:/.left_vruntime.stddev
219.53 +873.1% 2136 ±185% sched_debug.cfs_rq:/.load_avg.max
60.71 ± 10% +444.0% 330.25 ±167% sched_debug.cfs_rq:/.load_avg.stddev
6455 ±141% +750.4% 54895 ± 70% sched_debug.cfs_rq:/.right_vruntime.avg
309855 ±141% +750.4% 2634967 ± 70% sched_debug.cfs_rq:/.right_vruntime.max
44255 ±141% +750.4% 376342 ± 70% sched_debug.cfs_rq:/.right_vruntime.stddev
8.51 ± 12% +67.6% 14.25 ± 14% sched_debug.cpu.clock.stddev
148335 ± 37% -79.4% 30520 ± 8% sched_debug.cpu.nr_switches.max
22646 ± 34% -73.7% 5946 ± 8% sched_debug.cpu.nr_switches.stddev
586.24 +45.2% 851.22 perf-stat.i.MPKI
3.795e+08 -23.6% 2.901e+08 perf-stat.i.branch-instructions
1.19 +0.4 1.55 perf-stat.i.branch-miss-rate%
8.737e+08 +4.8% 9.154e+08 perf-stat.i.cache-misses
9.041e+08 +5.1% 9.506e+08 perf-stat.i.cache-references
94.80 +38.7% 131.45 perf-stat.i.cpi
83.43 ± 2% -10.6% 74.57 perf-stat.i.cpu-migrations
162.14 -4.5% 154.78 perf-stat.i.cycles-between-cache-misses
1.806e+09 -22.0% 1.409e+09 perf-stat.i.instructions
0.01 -20.5% 0.01 perf-stat.i.ipc
0.10 ± 36% -59.3% 0.04 ± 38% perf-stat.i.major-faults
28196 +4.2% 29394 perf-stat.i.minor-faults
28196 +4.2% 29394 perf-stat.i.page-faults
483.60 +34.6% 650.80 perf-stat.overall.MPKI
1.92 +0.6 2.51 perf-stat.overall.branch-miss-rate%
78.25 +28.5% 100.54 perf-stat.overall.cpi
161.80 -4.5% 154.48 perf-stat.overall.cycles-between-cache-misses
0.01 -22.2% 0.01 perf-stat.overall.ipc
40822 -25.7% 30316 perf-stat.overall.path-length
3.784e+08 -23.7% 2.886e+08 perf-stat.ps.branch-instructions
8.706e+08 +4.8% 9.121e+08 perf-stat.ps.cache-misses
9.009e+08 +5.1% 9.472e+08 perf-stat.ps.cache-references
83.08 ± 2% -10.6% 74.23 perf-stat.ps.cpu-migrations
1.8e+09 -22.2% 1.402e+09 perf-stat.ps.instructions
0.10 ± 36% -59.5% 0.04 ± 39% perf-stat.ps.major-faults
28093 +4.2% 29283 perf-stat.ps.minor-faults
28093 +4.2% 29283 perf-stat.ps.page-faults
5.44e+11 -22.2% 4.235e+11 perf-stat.total.instructions
86.63 -58.6 28.03 perf-profile.calltrace.cycles-pp.folio_zero_user.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault
97.92 -3.3 94.64 perf-profile.calltrace.cycles-pp.testcase
88.40 -2.3 86.08 perf-profile.calltrace.cycles-pp.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
89.13 -2.3 86.86 perf-profile.calltrace.cycles-pp.__do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault
89.28 -2.3 87.02 perf-profile.calltrace.cycles-pp.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
89.18 -2.3 86.92 perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
89.49 -2.3 87.24 perf-profile.calltrace.cycles-pp.exc_page_fault.asm_exc_page_fault.testcase
89.48 -2.2 87.23 perf-profile.calltrace.cycles-pp.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
89.56 -2.2 87.32 perf-profile.calltrace.cycles-pp.asm_exc_page_fault.testcase
1.32 +0.3 1.60 perf-profile.calltrace.cycles-pp.prep_new_page.get_page_from_freelist.__alloc_frozen_pages_noprof.alloc_pages_mpol.vma_alloc_folio_noprof
1.43 +0.3 1.72 perf-profile.calltrace.cycles-pp.alloc_pages_mpol.vma_alloc_folio_noprof.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page.__handle_mm_fault
1.43 +0.3 1.71 perf-profile.calltrace.cycles-pp.__alloc_frozen_pages_noprof.alloc_pages_mpol.vma_alloc_folio_noprof.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page
1.41 +0.3 1.70 perf-profile.calltrace.cycles-pp.get_page_from_freelist.__alloc_frozen_pages_noprof.alloc_pages_mpol.vma_alloc_folio_noprof.vma_alloc_anon_folio_pmd
1.45 +0.3 1.74 perf-profile.calltrace.cycles-pp.vma_alloc_folio_noprof.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault
1.45 +2.4 3.84 perf-profile.calltrace.cycles-pp.free_unref_folios.folios_put_refs.free_pages_and_swap_cache.__tlb_batch_free_encoded_pages.tlb_finish_mmu
1.54 +2.6 4.16 perf-profile.calltrace.cycles-pp.folios_put_refs.free_pages_and_swap_cache.__tlb_batch_free_encoded_pages.tlb_finish_mmu.vms_clear_ptes
1.54 +2.6 4.19 perf-profile.calltrace.cycles-pp.free_pages_and_swap_cache.__tlb_batch_free_encoded_pages.tlb_finish_mmu.vms_clear_ptes.vms_complete_munmap_vmas
1.54 +2.7 4.20 perf-profile.calltrace.cycles-pp.__tlb_batch_free_encoded_pages.tlb_finish_mmu.vms_clear_ptes.vms_complete_munmap_vmas.do_vmi_align_munmap
1.55 +2.7 4.22 perf-profile.calltrace.cycles-pp.tlb_finish_mmu.vms_clear_ptes.vms_complete_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap
1.64 +2.9 4.52 perf-profile.calltrace.cycles-pp.vms_clear_ptes.vms_complete_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap
1.67 +2.9 4.56 perf-profile.calltrace.cycles-pp.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64
1.65 +2.9 4.54 perf-profile.calltrace.cycles-pp.vms_complete_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap
1.67 +2.9 4.56 perf-profile.calltrace.cycles-pp.do_vmi_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe
1.67 +2.9 4.56 perf-profile.calltrace.cycles-pp.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
1.67 +2.9 4.56 perf-profile.calltrace.cycles-pp.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
1.67 +2.9 4.57 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
1.67 +2.9 4.57 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__munmap
1.68 +2.9 4.58 perf-profile.calltrace.cycles-pp.__munmap
0.84 ± 5% +111.8 112.61 perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt.folio_zero_user.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page.__handle_mm_fault
97.97 -3.3 94.68 perf-profile.children.cycles-pp.testcase
86.84 -2.6 84.21 perf-profile.children.cycles-pp.folio_zero_user
88.40 -2.3 86.08 perf-profile.children.cycles-pp.vma_alloc_anon_folio_pmd
89.13 -2.3 86.86 perf-profile.children.cycles-pp.__do_huge_pmd_anonymous_page
89.21 -2.2 86.98 perf-profile.children.cycles-pp.__handle_mm_fault
89.31 -2.2 87.09 perf-profile.children.cycles-pp.handle_mm_fault
89.52 -2.2 87.30 perf-profile.children.cycles-pp.exc_page_fault
89.51 -2.2 87.30 perf-profile.children.cycles-pp.do_user_addr_fault
89.60 -2.2 87.40 perf-profile.children.cycles-pp.asm_exc_page_fault
0.75 ± 5% -0.4 0.39 ± 4% perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt
0.66 ± 5% -0.3 0.34 ± 3% perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt
0.66 ± 5% -0.3 0.34 ± 3% perf-profile.children.cycles-pp.hrtimer_interrupt
0.56 ± 6% -0.3 0.28 ± 4% perf-profile.children.cycles-pp.__hrtimer_run_queues
0.44 ± 6% -0.2 0.22 ± 5% perf-profile.children.cycles-pp.tick_nohz_handler
0.41 ± 7% -0.2 0.20 ± 4% perf-profile.children.cycles-pp.update_process_times
0.27 ± 6% -0.1 0.14 ± 3% perf-profile.children.cycles-pp.sched_tick
0.18 ± 7% -0.1 0.09 ± 7% perf-profile.children.cycles-pp.task_tick_fair
0.10 ± 3% -0.0 0.08 ± 5% perf-profile.children.cycles-pp.__irqentry_text_end
0.10 ± 4% +0.0 0.12 ± 4% perf-profile.children.cycles-pp.lock_vma_under_rcu
0.12 ± 3% +0.0 0.14 ± 5% perf-profile.children.cycles-pp.___perf_sw_event
0.07 ± 8% +0.0 0.09 ± 5% perf-profile.children.cycles-pp.try_charge_memcg
0.04 ± 44% +0.0 0.06 perf-profile.children.cycles-pp.mod_memcg_lruvec_state
0.05 ± 8% +0.0 0.07 ± 5% perf-profile.children.cycles-pp.mod_node_page_state
0.37 +0.0 0.39 ± 2% perf-profile.children.cycles-pp.pte_alloc_one
0.06 ± 9% +0.0 0.08 ± 4% perf-profile.children.cycles-pp._raw_spin_lock_irqsave
0.36 +0.0 0.38 perf-profile.children.cycles-pp.alloc_pages_noprof
0.05 +0.0 0.08 ± 7% perf-profile.children.cycles-pp.free_tail_page_prepare
0.06 ± 9% +0.0 0.08 ± 5% perf-profile.children.cycles-pp.__mem_cgroup_charge
0.00 +0.1 0.06 ± 9% perf-profile.children.cycles-pp.x64_sys_call
0.00 +0.1 0.06 ± 8% perf-profile.children.cycles-pp.load_elf_binary
0.00 +0.1 0.06 ± 6% perf-profile.children.cycles-pp.exec_binprm
0.01 ±223% +0.1 0.07 ± 7% perf-profile.children.cycles-pp.charge_memcg
0.00 +0.1 0.06 ± 15% perf-profile.children.cycles-pp.asm_sysvec_call_function
0.00 +0.1 0.06 ± 6% perf-profile.children.cycles-pp.bprm_execve
0.00 +0.1 0.06 ± 6% perf-profile.children.cycles-pp.folio_remove_rmap_pmd
0.00 +0.1 0.06 ± 7% perf-profile.children.cycles-pp.asm_sysvec_reschedule_ipi
0.00 +0.1 0.07 ± 5% perf-profile.children.cycles-pp.free_pgtables
0.05 +0.1 0.14 ± 3% perf-profile.children.cycles-pp.__mmap
0.00 +0.1 0.09 ± 7% perf-profile.children.cycles-pp.__folio_unqueue_deferred_split
0.00 +0.1 0.09 ± 4% perf-profile.children.cycles-pp.execve
0.00 +0.1 0.09 ± 5% perf-profile.children.cycles-pp.__x64_sys_execve
0.00 +0.1 0.09 ± 5% perf-profile.children.cycles-pp.do_execveat_common
0.06 +0.1 0.16 ± 3% perf-profile.children.cycles-pp.vm_mmap_pgoff
0.05 ± 8% +0.1 0.15 ± 5% perf-profile.children.cycles-pp.do_mmap
0.00 +0.1 0.11 ± 4% perf-profile.children.cycles-pp.__mmap_region
0.00 +0.1 0.13 ± 2% perf-profile.children.cycles-pp.lru_gen_del_folio
0.00 +0.1 0.14 ± 2% perf-profile.children.cycles-pp.__page_cache_release
0.08 +0.1 0.22 ± 3% perf-profile.children.cycles-pp.zap_huge_pmd
0.09 ± 4% +0.2 0.25 ± 3% perf-profile.children.cycles-pp.unmap_page_range
0.08 ± 5% +0.2 0.24 ± 3% perf-profile.children.cycles-pp.zap_pmd_range
0.09 ± 6% +0.2 0.25 perf-profile.children.cycles-pp.unmap_vmas
1.47 +0.3 1.75 perf-profile.children.cycles-pp.prep_new_page
1.64 +0.3 1.93 perf-profile.children.cycles-pp.get_page_from_freelist
1.46 +0.3 1.75 perf-profile.children.cycles-pp.vma_alloc_folio_noprof
1.79 +0.3 2.10 perf-profile.children.cycles-pp.alloc_pages_mpol
1.78 +0.3 2.09 perf-profile.children.cycles-pp.__alloc_frozen_pages_noprof
1.46 +2.4 3.86 perf-profile.children.cycles-pp.free_unref_folios
1.54 +2.6 4.17 perf-profile.children.cycles-pp.folios_put_refs
1.54 +2.7 4.20 perf-profile.children.cycles-pp.free_pages_and_swap_cache
1.55 +2.7 4.20 perf-profile.children.cycles-pp.__tlb_batch_free_encoded_pages
1.55 +2.7 4.23 perf-profile.children.cycles-pp.tlb_finish_mmu
1.64 +2.9 4.52 perf-profile.children.cycles-pp.vms_clear_ptes
1.65 +2.9 4.54 perf-profile.children.cycles-pp.vms_complete_munmap_vmas
1.67 +2.9 4.56 perf-profile.children.cycles-pp.do_vmi_align_munmap
1.67 +2.9 4.57 perf-profile.children.cycles-pp.__x64_sys_munmap
1.67 +2.9 4.57 perf-profile.children.cycles-pp.__vm_munmap
1.67 +2.9 4.56 perf-profile.children.cycles-pp.do_vmi_munmap
1.68 +2.9 4.58 perf-profile.children.cycles-pp.__munmap
1.93 +3.2 5.12 perf-profile.children.cycles-pp.do_syscall_64
1.93 +3.2 5.12 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
0.96 ± 5% +55.6 56.60 perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt
84.87 -1.2 83.67 perf-profile.self.cycles-pp.folio_zero_user
8.24 -1.0 7.28 perf-profile.self.cycles-pp.testcase
0.10 ± 3% -0.0 0.08 ± 5% perf-profile.self.cycles-pp.__irqentry_text_end
0.08 ± 5% +0.0 0.10 ± 4% perf-profile.self.cycles-pp.mas_walk
0.05 ± 8% +0.0 0.07 ± 5% perf-profile.self.cycles-pp.mod_node_page_state
0.00 +0.1 0.05 perf-profile.self.cycles-pp.__alloc_frozen_pages_noprof
0.00 +0.1 0.06 ± 6% perf-profile.self.cycles-pp.free_tail_page_prepare
0.00 +0.1 0.06 ± 7% perf-profile.self.cycles-pp.zap_huge_pmd
0.00 +0.1 0.08 ± 8% perf-profile.self.cycles-pp.__folio_unqueue_deferred_split
0.00 +0.1 0.10 ± 3% perf-profile.self.cycles-pp.lru_gen_del_folio
0.00 +0.2 0.17 ± 2% perf-profile.self.cycles-pp.asm_sysvec_apic_timer_interrupt
1.32 +0.3 1.60 perf-profile.self.cycles-pp.prep_new_page
1.40 +2.3 3.75 perf-profile.self.cycles-pp.free_unref_folios
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
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