[linux-next:master] [mm] 94962b2628: will-it-scale.per_process_ops 4.8% improvement
kernel test robot <[email protected]>
| Newsgroups | dev.linux.lists.oe-lkp,org.kvack.linux-mm |
|---|---|
| Message-ID | <[email protected]> |
Hello,
kernel test robot noticed a 4.8% improvement of will-it-scale.per_process_ops on:
commit: 94962b2628e6af2c48be6ebdf9f76add28d60ecc ("mm: folio_zero_user: clear page ranges")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
testcase: will-it-scale
config: x86_64-rhel-9.4
compiler: gcc-14
test machine: 48 threads 2 sockets Intel(R) Xeon(R) CPU E5-2697 v2 @ 2.70GHz (Ivy Bridge-EP) with 64G memory
parameters:
nr_task: 100%
mode: process
test: page_fault1
cpufreq_governor: performance
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260131/[email protected]
=========================================================================================
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
\ | \
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
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
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