[linus:master] [mm] 99fbb6bfc1: will-it-scale.per_process_ops -4.7% regression
From: kernel test robot
Date: Thu Mar 14 2024 - 23:08:22 EST
Hello,
kernel test robot noticed a -4.7% regression of will-it-scale.per_process_ops on:
commit: 99fbb6bfc16f202adc411ad5d353db214750d121 ("mm: make folios_put() the basis of release_pages()")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
testcase: will-it-scale
test machine: 104 threads 2 sockets (Skylake) with 192G memory
parameters:
nr_task: 100%
mode: process
test: page_fault2
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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-lkp/202403151058.7048f6a8-oliver.sang@xxxxxxxxx
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20240315/202403151058.7048f6a8-oliver.sang@xxxxxxxxx
=========================================================================================
compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase:
gcc-12/performance/x86_64-rhel-8.3/process/100%/debian-12-x86_64-20240206.cgz/lkp-skl-fpga01/page_fault2/will-it-scale
commit:
5dad604809 ("mm/khugepaged: keep mm in mm_slot without MMF_DISABLE_THP check")
99fbb6bfc1 ("mm: make folios_put() the basis of release_pages()")
5dad604809c5acc5 99fbb6bfc16f202adc411ad5d35
---------------- ---------------------------
%stddev %change %stddev
\ | \
0.02 ± 10% -0.0 0.02 ± 7% mpstat.cpu.all.soft%
26593 ± 3% -15.2% 22556 ± 4% perf-c2c.DRAM.local
225.67 ± 5% +59.8% 360.67 ± 3% perf-c2c.DRAM.remote
3864 +27.3% 4917 perf-c2c.HITM.local
250955 ± 4% -11.8% 221434 ± 6% sched_debug.cfs_rq:/.avg_vruntime.stddev
250955 ± 4% -11.8% 221433 ± 6% sched_debug.cfs_rq:/.min_vruntime.stddev
1408 ± 5% -20.0% 1126 ± 4% sched_debug.cpu.nr_switches.min
8839851 -4.7% 8423518 will-it-scale.104.processes
84998 -4.7% 80994 will-it-scale.per_process_ops
8839851 -4.7% 8423518 will-it-scale.workload
8905 ± 14% -37.5% 5565 ± 29% numa-vmstat.node0.nr_mapped
5594 ± 24% +64.1% 9182 ± 18% numa-vmstat.node1.nr_mapped
223619 ±125% +149.2% 557292 ± 35% numa-vmstat.node1.nr_unevictable
223619 ±125% +149.2% 557292 ± 35% numa-vmstat.node1.nr_zone_unevictable
34807 ± 14% -37.6% 21736 ± 30% numa-meminfo.node0.Mapped
16743687 ± 6% -8.4% 15343456 ± 5% numa-meminfo.node0.MemUsed
21509 ± 24% +65.6% 35626 ± 18% numa-meminfo.node1.Mapped
15757988 ± 6% +9.2% 17208425 ± 4% numa-meminfo.node1.MemUsed
128748 ± 12% +27.4% 163979 ± 9% numa-meminfo.node1.Slab
894476 ±125% +149.2% 2229168 ± 35% numa-meminfo.node1.Unevictable
110744 +3.9% 115041 proc-vmstat.nr_active_anon
1744461 -3.0% 1692770 proc-vmstat.nr_anon_pages
6880 +3.8% 7138 proc-vmstat.nr_page_table_pages
110744 +3.9% 115041 proc-vmstat.nr_zone_active_anon
2.693e+09 -4.8% 2.565e+09 proc-vmstat.numa_hit
2.683e+09 -4.8% 2.555e+09 proc-vmstat.numa_local
103708 +4.9% 108792 ± 2% proc-vmstat.pgactivate
2.672e+09 -4.8% 2.544e+09 proc-vmstat.pgalloc_normal
2.661e+09 -4.8% 2.534e+09 proc-vmstat.pgfault
2.669e+09 -4.7% 2.544e+09 proc-vmstat.pgfree
43665 ± 7% +11.4% 48633 ± 3% proc-vmstat.pgreuse
9.15e+09 -3.3% 8.845e+09 perf-stat.i.branch-instructions
0.47 +0.0 0.50 perf-stat.i.branch-miss-rate%
42741215 +1.6% 43433005 perf-stat.i.branch-misses
84.26 -4.3 79.96 perf-stat.i.cache-miss-rate%
7.696e+08 -4.3% 7.363e+08 perf-stat.i.cache-misses
9.114e+08 +0.8% 9.187e+08 perf-stat.i.cache-references
6.32 +3.5% 6.55 perf-stat.i.cpi
141.24 -4.3% 135.20 perf-stat.i.cpu-migrations
378.24 +4.6% 395.50 perf-stat.i.cycles-between-cache-misses
4.571e+10 -3.4% 4.416e+10 perf-stat.i.instructions
0.16 -3.3% 0.16 perf-stat.i.ipc
169.33 -4.8% 161.22 perf-stat.i.metric.K/sec
8806480 -4.8% 8384435 perf-stat.i.minor-faults
8806480 -4.8% 8384435 perf-stat.i.page-faults
21.63 -21.6 0.00 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.folio_lruvec_lock_irqsave.release_pages.__tlb_batch_free_encoded_pages
19.17 -19.2 0.00 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.folio_lruvec_lock_irqsave.release_pages.__tlb_batch_free_encoded_pages.tlb_flush_mmu
19.17 -19.2 0.00 perf-profile.calltrace.cycles-pp.folio_lruvec_lock_irqsave.release_pages.__tlb_batch_free_encoded_pages.tlb_flush_mmu.zap_pte_range
44.89 -12.6 32.30 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.folio_lruvec_lock_irqsave.folio_batch_move_lru.folio_add_lru_vma.set_pte_range
44.90 -12.6 32.31 perf-profile.calltrace.cycles-pp.folio_lruvec_lock_irqsave.folio_batch_move_lru.folio_add_lru_vma.set_pte_range.finish_fault
44.84 -12.6 32.26 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.folio_lruvec_lock_irqsave.folio_batch_move_lru.folio_add_lru_vma
46.08 -12.4 33.66 perf-profile.calltrace.cycles-pp.folio_batch_move_lru.folio_add_lru_vma.set_pte_range.finish_fault.do_fault
46.18 -12.4 33.76 perf-profile.calltrace.cycles-pp.folio_add_lru_vma.set_pte_range.finish_fault.do_fault.__handle_mm_fault
48.87 -12.2 36.65 perf-profile.calltrace.cycles-pp.finish_fault.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
61.81 -12.2 49.61 perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
63.82 -12.2 51.63 perf-profile.calltrace.cycles-pp.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
63.95 -12.2 51.76 perf-profile.calltrace.cycles-pp.exc_page_fault.asm_exc_page_fault.testcase
62.59 -12.2 50.40 perf-profile.calltrace.cycles-pp.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
61.24 -12.2 49.07 perf-profile.calltrace.cycles-pp.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault
47.21 -12.2 35.04 perf-profile.calltrace.cycles-pp.set_pte_range.finish_fault.do_fault.__handle_mm_fault.handle_mm_fault
71.03 -12.0 59.01 perf-profile.calltrace.cycles-pp.asm_exc_page_fault.testcase
74.04 -12.0 62.07 perf-profile.calltrace.cycles-pp.testcase
7.86 -0.3 7.58 ± 2% perf-profile.calltrace.cycles-pp.copy_page.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
0.61 ± 3% -0.1 0.56 ± 3% perf-profile.calltrace.cycles-pp.try_charge_memcg.__mem_cgroup_charge.folio_prealloc.do_fault.__handle_mm_fault
1.36 -0.0 1.32 perf-profile.calltrace.cycles-pp.__do_fault.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
0.90 -0.0 0.85 perf-profile.calltrace.cycles-pp.filemap_get_entry.shmem_get_folio_gfp.shmem_fault.__do_fault.do_fault
1.28 -0.0 1.24 perf-profile.calltrace.cycles-pp.shmem_fault.__do_fault.do_fault.__handle_mm_fault.handle_mm_fault
1.10 -0.0 1.05 perf-profile.calltrace.cycles-pp.shmem_get_folio_gfp.shmem_fault.__do_fault.do_fault.__handle_mm_fault
1.29 +0.1 1.35 perf-profile.calltrace.cycles-pp.zap_present_ptes.zap_pte_range.zap_pmd_range.unmap_page_range.unmap_vmas
0.59 +0.1 0.72 perf-profile.calltrace.cycles-pp.lru_add_fn.folio_batch_move_lru.folio_add_lru_vma.set_pte_range.finish_fault
0.57 ± 4% +0.3 0.84 perf-profile.calltrace.cycles-pp.__lruvec_stat_mod_folio.set_pte_range.finish_fault.do_fault.__handle_mm_fault
2.81 +0.4 3.20 perf-profile.calltrace.cycles-pp.folio_prealloc.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
1.21 +0.4 1.63 perf-profile.calltrace.cycles-pp.__mem_cgroup_charge.folio_prealloc.do_fault.__handle_mm_fault.handle_mm_fault
0.00 +0.6 0.57 ± 4% perf-profile.calltrace.cycles-pp.get_mem_cgroup_from_mm.__mem_cgroup_charge.folio_prealloc.do_fault.__handle_mm_fault
2.68 +1.4 4.04 perf-profile.calltrace.cycles-pp.release_pages.__tlb_batch_free_encoded_pages.tlb_finish_mmu.unmap_region.do_vmi_align_munmap
2.71 +1.4 4.07 perf-profile.calltrace.cycles-pp.__tlb_batch_free_encoded_pages.tlb_finish_mmu.unmap_region.do_vmi_align_munmap.do_vmi_munmap
2.71 +1.4 4.07 perf-profile.calltrace.cycles-pp.tlb_finish_mmu.unmap_region.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap
0.00 +3.8 3.79 perf-profile.calltrace.cycles-pp.folio_lruvec_lock_irqsave.folios_put_refs.release_pages.__tlb_batch_free_encoded_pages.tlb_finish_mmu
0.00 +4.0 4.03 perf-profile.calltrace.cycles-pp.folios_put_refs.release_pages.__tlb_batch_free_encoded_pages.tlb_finish_mmu.unmap_region
20.62 +10.6 31.18 perf-profile.calltrace.cycles-pp.__tlb_batch_free_encoded_pages.tlb_flush_mmu.zap_pte_range.zap_pmd_range.unmap_page_range
20.62 +10.6 31.18 perf-profile.calltrace.cycles-pp.tlb_flush_mmu.zap_pte_range.zap_pmd_range.unmap_page_range.unmap_vmas
20.41 +10.6 30.99 perf-profile.calltrace.cycles-pp.release_pages.__tlb_batch_free_encoded_pages.tlb_flush_mmu.zap_pte_range.zap_pmd_range
22.03 +10.6 32.64 perf-profile.calltrace.cycles-pp.zap_pte_range.zap_pmd_range.unmap_page_range.unmap_vmas.unmap_region
22.03 +10.6 32.64 perf-profile.calltrace.cycles-pp.unmap_page_range.unmap_vmas.unmap_region.do_vmi_align_munmap.do_vmi_munmap
22.03 +10.6 32.64 perf-profile.calltrace.cycles-pp.zap_pmd_range.unmap_page_range.unmap_vmas.unmap_region.do_vmi_align_munmap
22.03 +10.6 32.65 perf-profile.calltrace.cycles-pp.unmap_vmas.unmap_region.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap
24.78 +12.0 36.74 perf-profile.calltrace.cycles-pp.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
24.78 +12.0 36.74 perf-profile.calltrace.cycles-pp.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
24.78 +12.0 36.74 perf-profile.calltrace.cycles-pp.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64
24.78 +12.0 36.74 perf-profile.calltrace.cycles-pp.do_vmi_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe
24.77 +12.0 36.74 perf-profile.calltrace.cycles-pp.unmap_region.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap
24.78 +12.0 36.74 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
24.78 +12.0 36.74 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__munmap
24.78 +12.0 36.74 perf-profile.calltrace.cycles-pp.__munmap
0.00 +29.4 29.41 perf-profile.calltrace.cycles-pp.folio_lruvec_lock_irqsave.folios_put_refs.release_pages.__tlb_batch_free_encoded_pages.tlb_flush_mmu
0.00 +30.9 30.87 perf-profile.calltrace.cycles-pp.folios_put_refs.release_pages.__tlb_batch_free_encoded_pages.tlb_flush_mmu.zap_pte_range
0.00 +33.1 33.14 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.folio_lruvec_lock_irqsave.folios_put_refs.release_pages
0.00 +33.2 33.18 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.folio_lruvec_lock_irqsave.folios_put_refs.release_pages.__tlb_batch_free_encoded_pages
46.16 -12.4 33.72 perf-profile.children.cycles-pp.folio_batch_move_lru
46.19 -12.4 33.77 perf-profile.children.cycles-pp.folio_add_lru_vma
48.88 -12.2 36.66 perf-profile.children.cycles-pp.finish_fault
61.83 -12.2 49.63 perf-profile.children.cycles-pp.__handle_mm_fault
63.97 -12.2 51.77 perf-profile.children.cycles-pp.exc_page_fault
63.84 -12.2 51.65 perf-profile.children.cycles-pp.do_user_addr_fault
62.61 -12.2 50.42 perf-profile.children.cycles-pp.handle_mm_fault
61.26 -12.2 49.08 perf-profile.children.cycles-pp.do_fault
47.22 -12.2 35.05 perf-profile.children.cycles-pp.set_pte_range
69.07 -12.1 56.99 perf-profile.children.cycles-pp.asm_exc_page_fault
75.04 -11.9 63.09 perf-profile.children.cycles-pp.testcase
66.59 -1.1 65.49 perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
66.62 -1.1 65.56 perf-profile.children.cycles-pp._raw_spin_lock_irqsave
66.62 -1.1 65.57 perf-profile.children.cycles-pp.folio_lruvec_lock_irqsave
7.92 -0.3 7.62 perf-profile.children.cycles-pp.copy_page
0.28 -0.1 0.20 ± 2% perf-profile.children.cycles-pp.mem_cgroup_update_lru_size
0.62 ± 3% -0.1 0.56 ± 3% perf-profile.children.cycles-pp.try_charge_memcg
1.14 -0.0 1.09 perf-profile.children.cycles-pp.shmem_get_folio_gfp
0.18 ± 2% -0.0 0.13 ± 2% perf-profile.children.cycles-pp.uncharge_folio
1.37 -0.0 1.32 perf-profile.children.cycles-pp.__do_fault
1.35 -0.0 1.30 perf-profile.children.cycles-pp._raw_spin_lock
1.28 -0.0 1.24 perf-profile.children.cycles-pp.shmem_fault
0.90 -0.0 0.86 perf-profile.children.cycles-pp.filemap_get_entry
0.66 -0.0 0.64 perf-profile.children.cycles-pp.___perf_sw_event
0.07 ± 5% -0.0 0.05 ± 8% perf-profile.children.cycles-pp.main
0.07 ± 5% -0.0 0.05 ± 8% perf-profile.children.cycles-pp.run_builtin
0.06 -0.0 0.05 perf-profile.children.cycles-pp.record__mmap_read_evlist
0.14 ± 3% +0.0 0.16 ± 3% perf-profile.children.cycles-pp.update_process_times
0.04 ± 44% +0.0 0.06 perf-profile.children.cycles-pp.page_counter_try_charge
0.42 +0.0 0.44 perf-profile.children.cycles-pp.free_unref_page_list
0.21 ± 2% +0.0 0.23 ± 2% perf-profile.children.cycles-pp.__hrtimer_run_queues
0.08 ± 4% +0.0 0.10 ± 4% perf-profile.children.cycles-pp.get_pfnblock_flags_mask
0.14 ± 3% +0.0 0.17 ± 2% perf-profile.children.cycles-pp.free_unref_page_prepare
0.25 +0.0 0.27 ± 2% perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt
0.24 +0.0 0.27 ± 2% perf-profile.children.cycles-pp.hrtimer_interrupt
0.31 +0.0 0.34 perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt
0.28 +0.0 0.30 ± 2% perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt
1.02 +0.0 1.06 perf-profile.children.cycles-pp.native_irq_return_iret
2.33 +0.1 2.38 perf-profile.children.cycles-pp.__irqentry_text_end
1.32 +0.1 1.37 perf-profile.children.cycles-pp.zap_present_ptes
0.28 ± 8% +0.1 0.37 ± 5% perf-profile.children.cycles-pp.__count_memcg_events
0.36 +0.1 0.46 ± 2% perf-profile.children.cycles-pp.folio_remove_rmap_ptes
0.28 ± 7% +0.1 0.38 ± 4% perf-profile.children.cycles-pp.mem_cgroup_commit_charge
0.60 +0.1 0.74 perf-profile.children.cycles-pp.lru_add_fn
0.00 +0.2 0.22 ± 2% perf-profile.children.cycles-pp.page_counter_uncharge
0.19 ± 2% +0.2 0.43 ± 2% perf-profile.children.cycles-pp.__mem_cgroup_uncharge_list
0.00 +0.3 0.28 ± 2% perf-profile.children.cycles-pp.uncharge_batch
0.26 ± 11% +0.3 0.58 ± 4% perf-profile.children.cycles-pp.get_mem_cgroup_from_mm
0.57 ± 2% +0.3 0.90 ± 2% perf-profile.children.cycles-pp.__mod_memcg_lruvec_state
0.81 ± 3% +0.4 1.19 perf-profile.children.cycles-pp.__lruvec_stat_mod_folio
2.83 +0.4 3.22 perf-profile.children.cycles-pp.folio_prealloc
1.22 +0.4 1.64 perf-profile.children.cycles-pp.__mem_cgroup_charge
2.72 +1.4 4.08 perf-profile.children.cycles-pp.tlb_finish_mmu
20.62 +10.6 31.18 perf-profile.children.cycles-pp.tlb_flush_mmu
22.04 +10.6 32.65 perf-profile.children.cycles-pp.unmap_vmas
22.04 +10.6 32.65 perf-profile.children.cycles-pp.unmap_page_range
22.04 +10.6 32.65 perf-profile.children.cycles-pp.zap_pmd_range
22.03 +10.6 32.65 perf-profile.children.cycles-pp.zap_pte_range
23.23 +11.8 35.04 perf-profile.children.cycles-pp.release_pages
23.34 +11.9 35.26 perf-profile.children.cycles-pp.__tlb_batch_free_encoded_pages
24.90 +12.0 36.85 perf-profile.children.cycles-pp.do_syscall_64
24.90 +12.0 36.85 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
24.78 +12.0 36.74 perf-profile.children.cycles-pp.do_vmi_align_munmap
24.78 +12.0 36.74 perf-profile.children.cycles-pp.do_vmi_munmap
24.78 +12.0 36.74 perf-profile.children.cycles-pp.__x64_sys_munmap
24.78 +12.0 36.74 perf-profile.children.cycles-pp.__vm_munmap
24.78 +12.0 36.74 perf-profile.children.cycles-pp.unmap_region
24.78 +12.0 36.74 perf-profile.children.cycles-pp.__munmap
0.00 +35.1 35.05 perf-profile.children.cycles-pp.folios_put_refs
66.59 -1.1 65.49 perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
7.90 -0.3 7.60 ± 2% perf-profile.self.cycles-pp.copy_page
0.40 -0.3 0.11 ± 6% perf-profile.self.cycles-pp.release_pages
0.27 -0.1 0.19 ± 3% perf-profile.self.cycles-pp.mem_cgroup_update_lru_size
0.56 ± 3% -0.1 0.50 ± 4% perf-profile.self.cycles-pp.try_charge_memcg
0.17 ± 2% -0.1 0.12 ± 3% perf-profile.self.cycles-pp.uncharge_folio
1.34 -0.0 1.30 perf-profile.self.cycles-pp._raw_spin_lock
0.24 -0.0 0.21 ± 2% perf-profile.self.cycles-pp.zap_present_ptes
0.51 -0.0 0.48 perf-profile.self.cycles-pp.filemap_get_entry
0.27 ± 2% -0.0 0.25 perf-profile.self.cycles-pp.handle_mm_fault
0.66 -0.0 0.64 perf-profile.self.cycles-pp._compound_head
0.40 -0.0 0.38 perf-profile.self.cycles-pp.__handle_mm_fault
0.12 ± 4% -0.0 0.11 ± 3% perf-profile.self.cycles-pp.free_unref_page_list
0.09 +0.0 0.10 perf-profile.self.cycles-pp.vma_alloc_folio
0.08 +0.0 0.10 ± 3% perf-profile.self.cycles-pp.get_pfnblock_flags_mask
0.06 +0.0 0.08 ± 5% perf-profile.self.cycles-pp._raw_spin_lock_irqsave
0.02 ±141% +0.0 0.06 ± 9% perf-profile.self.cycles-pp.page_counter_try_charge
0.36 +0.0 0.40 ± 3% perf-profile.self.cycles-pp.folio_batch_move_lru
1.01 +0.0 1.05 perf-profile.self.cycles-pp.native_irq_return_iret
0.30 +0.0 0.34 perf-profile.self.cycles-pp.lru_add_fn
0.06 ± 11% +0.0 0.11 ± 4% perf-profile.self.cycles-pp.__mem_cgroup_charge
2.33 +0.1 2.38 perf-profile.self.cycles-pp.__irqentry_text_end
0.08 ± 6% +0.1 0.16 ± 3% perf-profile.self.cycles-pp.mem_cgroup_commit_charge
0.24 ± 9% +0.1 0.32 ± 4% perf-profile.self.cycles-pp.__count_memcg_events
0.30 ± 11% +0.2 0.47 ± 6% perf-profile.self.cycles-pp.__lruvec_stat_mod_folio
0.00 +0.2 0.19 ± 3% perf-profile.self.cycles-pp.page_counter_uncharge
0.26 ± 10% +0.3 0.56 ± 4% perf-profile.self.cycles-pp.get_mem_cgroup_from_mm
0.48 ± 2% +0.3 0.80 ± 2% perf-profile.self.cycles-pp.__mod_memcg_lruvec_state
0.00 +0.4 0.41 perf-profile.self.cycles-pp.folios_put_refs
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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https://github.com/intel/lkp-tests/wiki