* [tip:locking/core] [locking/rwsem] 1ea4b47350: stress-ng.bigheap.realloc_calls_per_sec 12.1% improvement
@ 2026-03-30 13:18 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-03-30 13:18 UTC (permalink / raw)
To: Matthew Wilcox
Cc: oe-lkp, lkp, linux-kernel, x86, Peter Zijlstra, oliver.sang
Hello,
kernel test robot noticed a 12.1% improvement of stress-ng.bigheap.realloc_calls_per_sec on:
commit: 1ea4b473504b6dc6a0d21c298519aff2d52433c9 ("locking/rwsem: Remove the list_head from struct rw_semaphore")
https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git locking/core
testcase: stress-ng
config: x86_64-rhel-9.4
compiler: gcc-14
test machine: 256 threads 4 sockets INTEL(R) XEON(R) PLATINUM 8592+ (Emerald Rapids) with 256G memory
parameters:
nr_threads: 100%
testtime: 60s
test: bigheap
cpufreq_governor: performance
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260330/202603302100.d3ef7f01-lkp@intel.com
=========================================================================================
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-emr-2sp1/bigheap/stress-ng/60s
commit:
b91d5d4bcf ("rust: atomic: Update a safety comment in impl of `fetch_add()`")
1ea4b47350 ("locking/rwsem: Remove the list_head from struct rw_semaphore")
b91d5d4bcf126625 1ea4b473504b6dc6a0d21c29851
---------------- ---------------------------
%stddev %change %stddev
\ | \
65871407 +15.5% 76099620 stress-ng.bigheap.ops
1092966 +15.3% 1260047 stress-ng.bigheap.ops_per_sec
656434 +12.1% 735803 stress-ng.bigheap.realloc_calls_per_sec
1.054e+09 +15.5% 1.218e+09 stress-ng.time.minor_page_faults
375.32 +22.4% 459.54 stress-ng.time.user_time
2.71 +0.5 3.25 mpstat.cpu.all.usr%
2079 ± 19% -49.5% 1049 ± 21% perf-c2c.HITM.remote
10266 ± 11% -16.1% 8609 ± 10% perf-c2c.HITM.total
46.42 ± 22% +68.6% 78.24 ± 24% perf-sched.sch_delay.max.ms.[unknown].[unknown].[unknown].[unknown].[unknown]
46.42 ± 22% +68.6% 78.24 ± 24% perf-sched.total_sch_delay.max.ms
0.18 +11.1% 0.20 turbostat.IPC
47.04 ± 9% +29.4 76.40 ± 5% turbostat.PKG_%
38.24 +4.7% 40.02 turbostat.RAMWatt
3.31 +11.1% 3.67 perf-stat.i.MPKI
2.849e+10 +7.2% 3.053e+10 perf-stat.i.branch-instructions
36284203 ± 4% +8.2% 39256911 ± 3% perf-stat.i.branch-misses
32.15 +4.5 36.66 perf-stat.i.cache-miss-rate%
4.536e+08 +22.4% 5.554e+08 perf-stat.i.cache-misses
1.395e+09 +6.7% 1.489e+09 perf-stat.i.cache-references
5.37 -7.4% 4.98 perf-stat.i.cpi
1896 -12.4% 1661 ± 2% perf-stat.i.cycles-between-cache-misses
1.376e+11 +8.7% 1.496e+11 perf-stat.i.instructions
0.19 +8.2% 0.20 perf-stat.i.ipc
139.10 +14.8% 159.64 perf-stat.i.metric.K/sec
17838796 +14.9% 20500158 perf-stat.i.minor-faults
17838796 +14.9% 20500158 perf-stat.i.page-faults
3.26 +12.9% 3.68 perf-stat.overall.MPKI
32.44 +4.7 37.16 perf-stat.overall.cache-miss-rate%
5.39 -7.5% 4.98 perf-stat.overall.cpi
1650 -18.0% 1352 perf-stat.overall.cycles-between-cache-misses
0.19 +8.1% 0.20 perf-stat.overall.ipc
2.751e+10 +6.6% 2.932e+10 perf-stat.ps.branch-instructions
4.338e+08 +22.0% 5.293e+08 perf-stat.ps.cache-misses
1.337e+09 +6.5% 1.424e+09 perf-stat.ps.cache-references
1.329e+11 +8.1% 1.437e+11 perf-stat.ps.instructions
17041476 +14.6% 19533609 perf-stat.ps.minor-faults
17041476 +14.6% 19533610 perf-stat.ps.page-faults
7.937e+12 +7.5% 8.535e+12 perf-stat.total.instructions
52.50 -15.8 36.72 ± 6% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.si_swapinfo.do_sysinfo.__do_sys_sysinfo
52.65 -15.8 36.88 ± 6% perf-profile.calltrace.cycles-pp.si_swapinfo.do_sysinfo.__do_sys_sysinfo.do_syscall_64.entry_SYSCALL_64_after_hwframe
52.65 -15.8 36.88 ± 6% perf-profile.calltrace.cycles-pp._raw_spin_lock.si_swapinfo.do_sysinfo.__do_sys_sysinfo.do_syscall_64
53.44 -6.8 46.66 ± 2% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.sysinfo
53.42 -6.8 46.65 ± 2% perf-profile.calltrace.cycles-pp.__do_sys_sysinfo.do_syscall_64.entry_SYSCALL_64_after_hwframe.sysinfo
53.44 -6.8 46.67 ± 2% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.sysinfo
53.47 -6.8 46.71 ± 2% perf-profile.calltrace.cycles-pp.sysinfo
53.25 -6.7 46.53 ± 2% perf-profile.calltrace.cycles-pp.do_sysinfo.__do_sys_sysinfo.do_syscall_64.entry_SYSCALL_64_after_hwframe.sysinfo
0.96 +0.1 1.09 ± 3% perf-profile.calltrace.cycles-pp.sync_regs.asm_exc_page_fault.stress_bigheap_child
1.67 +0.4 2.10 ± 3% perf-profile.calltrace.cycles-pp.kernel_init_pages.prep_new_page.get_page_from_freelist.__alloc_frozen_pages_noprof.alloc_pages_mpol
1.72 +0.4 2.15 ± 3% perf-profile.calltrace.cycles-pp.prep_new_page.get_page_from_freelist.__alloc_frozen_pages_noprof.alloc_pages_mpol.vma_alloc_folio_noprof
0.00 +0.6 0.56 ± 3% perf-profile.calltrace.cycles-pp.lru_add.folio_batch_move_lru.__folio_batch_add_and_move.do_anonymous_page.__handle_mm_fault
0.08 ±223% +0.6 0.65 ± 2% perf-profile.calltrace.cycles-pp.rmqueue.get_page_from_freelist.__alloc_frozen_pages_noprof.alloc_pages_mpol.vma_alloc_folio_noprof
0.00 +0.6 0.58 ± 2% perf-profile.calltrace.cycles-pp.folio_add_new_anon_rmap.do_anonymous_page.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
2.32 +0.7 2.98 ± 3% perf-profile.calltrace.cycles-pp.get_page_from_freelist.__alloc_frozen_pages_noprof.alloc_pages_mpol.vma_alloc_folio_noprof.alloc_anon_folio
2.43 +0.7 3.12 ± 3% perf-profile.calltrace.cycles-pp.__alloc_frozen_pages_noprof.alloc_pages_mpol.vma_alloc_folio_noprof.alloc_anon_folio.do_anonymous_page
2.50 +0.7 3.20 ± 3% perf-profile.calltrace.cycles-pp.alloc_pages_mpol.vma_alloc_folio_noprof.alloc_anon_folio.do_anonymous_page.__handle_mm_fault
2.60 +0.7 3.31 ± 3% perf-profile.calltrace.cycles-pp.vma_alloc_folio_noprof.alloc_anon_folio.do_anonymous_page.__handle_mm_fault.handle_mm_fault
0.86 ± 27% +0.8 1.64 ± 12% perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.folio_lruvec_lock_irqsave.folio_batch_move_lru.__folio_batch_add_and_move.do_anonymous_page
0.84 ± 27% +0.8 1.62 ± 13% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.folio_lruvec_lock_irqsave.folio_batch_move_lru.__folio_batch_add_and_move
0.86 ± 26% +0.8 1.65 ± 12% perf-profile.calltrace.cycles-pp.folio_lruvec_lock_irqsave.folio_batch_move_lru.__folio_batch_add_and_move.do_anonymous_page.__handle_mm_fault
1.51 ± 15% +0.9 2.40 ± 9% perf-profile.calltrace.cycles-pp.folio_batch_move_lru.__folio_batch_add_and_move.do_anonymous_page.__handle_mm_fault.handle_mm_fault
1.82 +0.9 2.73 ± 6% perf-profile.calltrace.cycles-pp.__mem_cgroup_charge.alloc_anon_folio.do_anonymous_page.__handle_mm_fault.handle_mm_fault
1.60 ± 14% +0.9 2.50 ± 8% perf-profile.calltrace.cycles-pp.__folio_batch_add_and_move.do_anonymous_page.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
1.74 +0.9 2.66 ± 4% perf-profile.calltrace.cycles-pp.pte_offset_map_lock.do_anonymous_page.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
0.00 +1.0 0.97 ± 54% perf-profile.calltrace.cycles-pp.get_mem_cgroup_from_mm.__mem_cgroup_charge.alloc_anon_folio.do_anonymous_page.__handle_mm_fault
4.52 +1.6 6.16 ± 3% perf-profile.calltrace.cycles-pp.alloc_anon_folio.do_anonymous_page.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
26.88 +1.7 28.56 ± 5% perf-profile.calltrace.cycles-pp.__page_cache_release.folios_put_refs.free_pages_and_swap_cache.__tlb_batch_free_encoded_pages.tlb_flush_mmu
28.94 +1.7 30.66 ± 5% perf-profile.calltrace.cycles-pp.folios_put_refs.free_pages_and_swap_cache.__tlb_batch_free_encoded_pages.tlb_flush_mmu.zap_pte_range
28.98 +1.7 30.70 ± 5% perf-profile.calltrace.cycles-pp.free_pages_and_swap_cache.__tlb_batch_free_encoded_pages.tlb_flush_mmu.zap_pte_range.zap_pmd_range
28.98 +1.7 30.71 ± 6% perf-profile.calltrace.cycles-pp.__tlb_batch_free_encoded_pages.tlb_flush_mmu.zap_pte_range.zap_pmd_range.unmap_page_range
28.98 +1.7 30.71 ± 6% perf-profile.calltrace.cycles-pp.tlb_flush_mmu.zap_pte_range.zap_pmd_range.unmap_page_range.unmap_vmas
29.33 +1.7 31.07 ± 6% perf-profile.calltrace.cycles-pp.zap_pte_range.zap_pmd_range.unmap_page_range.unmap_vmas.unmap_region
29.33 +1.7 31.08 ± 5% perf-profile.calltrace.cycles-pp.unmap_page_range.unmap_vmas.unmap_region.vms_complete_munmap_vmas.do_vmi_align_munmap
29.33 +1.7 31.08 ± 5% perf-profile.calltrace.cycles-pp.unmap_vmas.unmap_region.vms_complete_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap
29.33 +1.7 31.08 ± 5% perf-profile.calltrace.cycles-pp.zap_pmd_range.unmap_page_range.unmap_vmas.unmap_region.vms_complete_munmap_vmas
27.13 +1.8 28.93 ± 6% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.folio_lruvec_lock_irqsave.__page_cache_release.folios_put_refs
27.15 +1.8 28.95 ± 6% perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.folio_lruvec_lock_irqsave.__page_cache_release.folios_put_refs.free_pages_and_swap_cache
27.15 +1.8 28.95 ± 6% perf-profile.calltrace.cycles-pp.folio_lruvec_lock_irqsave.__page_cache_release.folios_put_refs.free_pages_and_swap_cache.__tlb_batch_free_encoded_pages
29.98 +1.9 31.88 ± 6% perf-profile.calltrace.cycles-pp.__munmap
29.98 +1.9 31.88 ± 6% perf-profile.calltrace.cycles-pp.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
29.98 +1.9 31.88 ± 6% perf-profile.calltrace.cycles-pp.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
29.98 +1.9 31.88 ± 6% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
29.98 +1.9 31.88 ± 6% perf-profile.calltrace.cycles-pp.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64
29.98 +1.9 31.88 ± 6% perf-profile.calltrace.cycles-pp.do_vmi_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe
29.98 +1.9 31.88 ± 6% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__munmap
29.98 +1.9 31.88 ± 6% perf-profile.calltrace.cycles-pp.unmap_region.vms_complete_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap
29.98 +1.9 31.88 ± 6% perf-profile.calltrace.cycles-pp.vms_complete_munmap_vmas.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap
8.76 ± 3% +3.7 12.48 ± 3% perf-profile.calltrace.cycles-pp.do_anonymous_page.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault
9.13 ± 3% +3.8 12.91 ± 3% perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
9.41 ± 3% +3.8 13.25 ± 3% perf-profile.calltrace.cycles-pp.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.stress_bigheap_child
10.00 ± 3% +3.9 13.91 ± 3% perf-profile.calltrace.cycles-pp.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.stress_bigheap_child
10.06 ± 3% +3.9 13.98 ± 3% perf-profile.calltrace.cycles-pp.exc_page_fault.asm_exc_page_fault.stress_bigheap_child
14.61 ± 2% +4.5 19.13 ± 3% perf-profile.calltrace.cycles-pp.asm_exc_page_fault.stress_bigheap_child
14.43 ± 2% +4.7 19.14 ± 3% perf-profile.calltrace.cycles-pp.stress_bigheap_child
0.49 ± 45% +9.1 9.60 ± 24% perf-profile.calltrace.cycles-pp.si_meminfo.do_sysinfo.__do_sys_sysinfo.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.36 ± 71% +9.2 9.53 ± 24% perf-profile.calltrace.cycles-pp.nr_blockdev_pages.si_meminfo.do_sysinfo.__do_sys_sysinfo.do_syscall_64
0.18 ±141% +9.3 9.49 ± 24% perf-profile.calltrace.cycles-pp._raw_spin_lock.nr_blockdev_pages.si_meminfo.do_sysinfo.__do_sys_sysinfo
0.08 ±223% +9.3 9.40 ± 24% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.nr_blockdev_pages.si_meminfo.do_sysinfo
52.65 -15.8 36.88 ± 6% perf-profile.children.cycles-pp.si_swapinfo
53.42 -6.8 46.65 ± 2% perf-profile.children.cycles-pp.__do_sys_sysinfo
53.48 -6.8 46.72 ± 2% perf-profile.children.cycles-pp.sysinfo
53.23 -6.7 46.48 ± 2% perf-profile.children.cycles-pp._raw_spin_lock
53.25 -6.7 46.54 ± 2% perf-profile.children.cycles-pp.do_sysinfo
84.09 -4.9 79.21 perf-profile.children.cycles-pp.do_syscall_64
84.09 -4.9 79.21 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
82.57 -4.2 78.40 perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
0.30 -0.1 0.24 ± 4% perf-profile.children.cycles-pp.expand_vma
0.17 ± 2% -0.1 0.11 ± 4% perf-profile.children.cycles-pp._copy_to_user
0.07 +0.0 0.08 perf-profile.children.cycles-pp.__pte_offset_map
0.11 +0.0 0.12 perf-profile.children.cycles-pp.mod_lruvec_state
0.06 +0.0 0.07 perf-profile.children.cycles-pp.arch_exit_to_user_mode_prepare
0.06 +0.0 0.07 perf-profile.children.cycles-pp.pte_offset_map_rw_nolock
0.07 +0.0 0.08 ± 5% perf-profile.children.cycles-pp.irqentry_exit
0.05 +0.0 0.06 ± 7% perf-profile.children.cycles-pp.count_memcg_events
0.07 ± 5% +0.0 0.09 ± 4% perf-profile.children.cycles-pp._raw_spin_trylock
0.11 +0.0 0.13 ± 4% perf-profile.children.cycles-pp.vma_merge_new_range
0.08 +0.0 0.10 perf-profile.children.cycles-pp.__mod_zone_page_state
0.14 +0.0 0.16 ± 4% perf-profile.children.cycles-pp.mas_walk
0.09 ± 4% +0.0 0.12 ± 4% perf-profile.children.cycles-pp.css_rstat_updated
0.18 +0.0 0.21 perf-profile.children.cycles-pp.mod_node_page_state
0.22 +0.0 0.25 ± 2% perf-profile.children.cycles-pp.___perf_sw_event
0.14 ± 4% +0.0 0.17 ± 8% perf-profile.children.cycles-pp.move_ptes
0.06 +0.0 0.09 ± 4% perf-profile.children.cycles-pp.page_counter_try_charge
0.14 +0.0 0.17 ± 4% perf-profile.children.cycles-pp.vma_merge_extend
0.28 +0.0 0.32 ± 3% perf-profile.children.cycles-pp.__perf_sw_event
0.27 +0.0 0.31 ± 3% perf-profile.children.cycles-pp.lock_vma_under_rcu
0.19 ± 3% +0.0 0.23 ± 9% perf-profile.children.cycles-pp.copy_vma_and_data
0.19 ± 3% +0.0 0.23 ± 9% perf-profile.children.cycles-pp.move_page_tables
0.22 ± 3% +0.0 0.26 ± 9% perf-profile.children.cycles-pp.move_vma
0.00 +0.1 0.05 perf-profile.children.cycles-pp.perf_swevent_event
0.11 ± 3% +0.1 0.17 ± 5% perf-profile.children.cycles-pp.expand
0.37 ± 13% +0.1 0.43 ± 4% perf-profile.children.cycles-pp.cmd_record
0.38 +0.1 0.44 ± 3% perf-profile.children.cycles-pp.lru_gen_add_folio
0.12 ± 48% +0.1 0.19 ± 5% perf-profile.children.cycles-pp.add_callchain_ip
0.50 +0.1 0.57 ± 3% perf-profile.children.cycles-pp.lru_add
0.16 ± 48% +0.1 0.24 ± 6% perf-profile.children.cycles-pp.__thread__resolve_callchain
0.17 ± 48% +0.1 0.25 ± 7% perf-profile.children.cycles-pp.sample__for_each_callchain_node
0.32 ± 2% +0.1 0.41 ± 3% perf-profile.children.cycles-pp.mod_memcg_lruvec_state
0.17 ± 49% +0.1 0.26 ± 6% perf-profile.children.cycles-pp.build_id__mark_dso_hit
0.18 ± 48% +0.1 0.28 ± 6% perf-profile.children.cycles-pp.__ordered_events__flush
0.18 ± 49% +0.1 0.28 ± 6% perf-profile.children.cycles-pp.perf_session__deliver_event
0.36 ± 2% +0.1 0.48 ± 2% perf-profile.children.cycles-pp.__folio_mod_stat
0.45 +0.1 0.57 ± 2% perf-profile.children.cycles-pp.lruvec_stat_mod_folio
0.46 +0.1 0.58 ± 2% perf-profile.children.cycles-pp.folio_add_new_anon_rmap
0.97 +0.1 1.10 ± 2% perf-profile.children.cycles-pp.sync_regs
0.30 ± 9% +0.1 0.44 ± 4% perf-profile.children.cycles-pp.rmqueue_bulk
0.94 ± 2% +0.1 1.08 ± 3% perf-profile.children.cycles-pp.native_irq_return_iret
0.35 ± 7% +0.2 0.51 ± 3% perf-profile.children.cycles-pp.__rmqueue_pcplist
0.51 ± 5% +0.2 0.69 ± 2% perf-profile.children.cycles-pp.rmqueue
1.70 +0.4 2.13 ± 3% perf-profile.children.cycles-pp.kernel_init_pages
1.74 +0.4 2.17 ± 3% perf-profile.children.cycles-pp.prep_new_page
0.36 ± 5% +0.6 0.98 ± 54% perf-profile.children.cycles-pp.get_mem_cgroup_from_mm
2.36 +0.7 3.02 ± 3% perf-profile.children.cycles-pp.get_page_from_freelist
2.49 +0.7 3.18 ± 3% perf-profile.children.cycles-pp.__alloc_frozen_pages_noprof
2.57 +0.7 3.28 ± 3% perf-profile.children.cycles-pp.alloc_pages_mpol
2.61 +0.7 3.32 ± 3% perf-profile.children.cycles-pp.vma_alloc_folio_noprof
1.54 ± 15% +0.9 2.44 ± 9% perf-profile.children.cycles-pp.folio_batch_move_lru
1.63 ± 14% +0.9 2.53 ± 8% perf-profile.children.cycles-pp.__folio_batch_add_and_move
1.85 +0.9 2.76 ± 5% perf-profile.children.cycles-pp.__mem_cgroup_charge
1.76 +0.9 2.68 ± 4% perf-profile.children.cycles-pp.pte_offset_map_lock
4.55 +1.7 6.20 ± 3% perf-profile.children.cycles-pp.alloc_anon_folio
28.98 +1.7 30.71 ± 6% perf-profile.children.cycles-pp.tlb_flush_mmu
29.36 +1.7 31.11 ± 5% perf-profile.children.cycles-pp.unmap_page_range
29.36 +1.7 31.11 ± 5% perf-profile.children.cycles-pp.unmap_vmas
29.36 +1.7 31.11 ± 5% perf-profile.children.cycles-pp.zap_pmd_range
29.36 +1.7 31.11 ± 5% perf-profile.children.cycles-pp.zap_pte_range
27.51 +1.8 29.34 ± 6% perf-profile.children.cycles-pp.__page_cache_release
29.64 +1.9 31.52 ± 6% perf-profile.children.cycles-pp.__tlb_batch_free_encoded_pages
29.64 +1.9 31.52 ± 6% perf-profile.children.cycles-pp.free_pages_and_swap_cache
29.68 +1.9 31.56 ± 6% perf-profile.children.cycles-pp.folios_put_refs
29.98 +1.9 31.88 ± 6% perf-profile.children.cycles-pp.__munmap
29.98 +1.9 31.88 ± 6% perf-profile.children.cycles-pp.__vm_munmap
29.98 +1.9 31.88 ± 6% perf-profile.children.cycles-pp.__x64_sys_munmap
30.01 +1.9 31.91 ± 6% perf-profile.children.cycles-pp.do_vmi_munmap
30.02 +1.9 31.92 ± 6% perf-profile.children.cycles-pp.do_vmi_align_munmap
30.02 +1.9 31.92 ± 6% perf-profile.children.cycles-pp.unmap_region
30.02 +1.9 31.92 ± 6% perf-profile.children.cycles-pp.vms_complete_munmap_vmas
28.06 +2.6 30.64 ± 5% perf-profile.children.cycles-pp.folio_lruvec_lock_irqsave
29.68 +2.6 32.32 ± 5% perf-profile.children.cycles-pp._raw_spin_lock_irqsave
8.82 ± 3% +3.7 12.56 ± 3% perf-profile.children.cycles-pp.do_anonymous_page
9.14 ± 3% +3.8 12.92 ± 3% perf-profile.children.cycles-pp.__handle_mm_fault
9.43 ± 3% +3.8 13.27 ± 3% perf-profile.children.cycles-pp.handle_mm_fault
10.02 ± 3% +3.9 13.94 ± 3% perf-profile.children.cycles-pp.do_user_addr_fault
10.07 ± 3% +3.9 14.00 ± 3% perf-profile.children.cycles-pp.exc_page_fault
13.04 ± 2% +4.3 17.35 ± 3% perf-profile.children.cycles-pp.asm_exc_page_fault
15.35 ± 2% +4.8 20.16 ± 3% perf-profile.children.cycles-pp.stress_bigheap_child
0.50 ± 15% +9.0 9.54 ± 24% perf-profile.children.cycles-pp.nr_blockdev_pages
0.55 ± 13% +9.0 9.60 ± 24% perf-profile.children.cycles-pp.si_meminfo
82.38 -4.1 78.24 perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
0.16 ± 2% -0.1 0.11 ± 4% perf-profile.self.cycles-pp._copy_to_user
0.05 +0.0 0.06 perf-profile.self.cycles-pp.__rmqueue_pcplist
0.07 +0.0 0.08 perf-profile.self.cycles-pp._raw_spin_trylock
0.06 +0.0 0.07 ± 5% perf-profile.self.cycles-pp.folio_add_lru
0.09 +0.0 0.10 ± 4% perf-profile.self.cycles-pp.folio_add_new_anon_rmap
0.11 +0.0 0.12 ± 4% perf-profile.self.cycles-pp.lru_add
0.08 ± 5% +0.0 0.10 ± 3% perf-profile.self.cycles-pp.rmqueue
0.14 +0.0 0.16 ± 3% perf-profile.self.cycles-pp.lock_vma_under_rcu
0.11 ± 3% +0.0 0.13 ± 2% perf-profile.self.cycles-pp.handle_mm_fault
0.05 +0.0 0.07 ± 7% perf-profile.self.cycles-pp.si_meminfo
0.13 ± 2% +0.0 0.14 ± 3% perf-profile.self.cycles-pp.do_user_addr_fault
0.08 +0.0 0.10 ± 4% perf-profile.self.cycles-pp.folio_batch_move_lru
0.14 ± 3% +0.0 0.16 ± 3% perf-profile.self.cycles-pp.mas_walk
0.07 +0.0 0.09 perf-profile.self.cycles-pp.__mod_zone_page_state
0.07 ± 7% +0.0 0.09 ± 5% perf-profile.self.cycles-pp.rmqueue_bulk
0.16 +0.0 0.18 ± 2% perf-profile.self.cycles-pp.folios_put_refs
0.08 ± 4% +0.0 0.10 ± 5% perf-profile.self.cycles-pp.alloc_anon_folio
0.15 +0.0 0.17 ± 4% perf-profile.self.cycles-pp.___perf_sw_event
0.08 ± 10% +0.0 0.10 perf-profile.self.cycles-pp.css_rstat_updated
0.12 ± 4% +0.0 0.15 ± 7% perf-profile.self.cycles-pp.move_ptes
0.06 ± 9% +0.0 0.08 ± 5% perf-profile.self.cycles-pp.page_counter_try_charge
0.24 ± 4% +0.0 0.26 ± 2% perf-profile.self.cycles-pp.__handle_mm_fault
0.16 ± 2% +0.0 0.20 ± 2% perf-profile.self.cycles-pp.mod_node_page_state
0.23 +0.0 0.26 ± 2% perf-profile.self.cycles-pp.lru_gen_add_folio
0.13 ± 3% +0.0 0.16 ± 4% perf-profile.self.cycles-pp.get_page_from_freelist
0.10 ± 4% +0.0 0.14 ± 4% perf-profile.self.cycles-pp.__alloc_frozen_pages_noprof
0.00 +0.1 0.05 perf-profile.self.cycles-pp.alloc_pages_mpol
0.11 ± 4% +0.1 0.16 ± 5% perf-profile.self.cycles-pp.expand
0.25 ± 2% +0.1 0.31 ± 4% perf-profile.self.cycles-pp.mod_memcg_lruvec_state
0.28 ± 3% +0.1 0.34 ± 4% perf-profile.self.cycles-pp._raw_spin_lock
0.16 ± 2% +0.1 0.23 ± 15% perf-profile.self.cycles-pp.__mem_cgroup_charge
0.32 +0.1 0.44 ± 7% perf-profile.self.cycles-pp.do_anonymous_page
0.96 +0.1 1.09 ± 3% perf-profile.self.cycles-pp.sync_regs
0.94 ± 2% +0.1 1.08 ± 3% perf-profile.self.cycles-pp.native_irq_return_iret
1.69 +0.4 2.12 ± 3% perf-profile.self.cycles-pp.kernel_init_pages
3.12 +0.6 3.69 ± 4% perf-profile.self.cycles-pp.stress_bigheap_child
0.35 ± 5% +0.6 0.97 ± 54% perf-profile.self.cycles-pp.get_mem_cgroup_from_mm
1.62 +0.9 2.52 ± 4% perf-profile.self.cycles-pp.pte_offset_map_lock
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
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2026-03-30 13:18 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-03-30 13:18 [tip:locking/core] [locking/rwsem] 1ea4b47350: stress-ng.bigheap.realloc_calls_per_sec 12.1% improvement kernel test robot
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox