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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hello, kernel test robot noticed a 4.7% improvement of stress-ng.numa.ops_per_sec on: commit: 24526268f4e38c9ec0c4a30de4f37ad2a2a84e47 ("mm: mempolicy: keep VMA walk if both MPOL_MF_STRICT and MPOL_MF_MOVE are specified") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master testcase: stress-ng test machine: 36 threads 1 sockets Intel(R) Core(TM) i9-10980XE CPU @ 3.00GHz (Cascade Lake) with 128G memory parameters: nr_threads: 1 testtime: 60s class: cpu test: numa cpufreq_governor: performance In addition to that, the commit also has significant impact on the following tests: +------------------+-------------------------------------------------------------------------------------------------+ | testcase: change | stress-ng: stress-ng.numa.ops_per_sec 4.5% improvement | | test machine | 36 threads 1 sockets Intel(R) Core(TM) i9-10980XE CPU @ 3.00GHz (Cascade Lake) with 128G memory | | test parameters | class=os | | | cpufreq_governor=performance | | | disk=1HDD | | | fs=ext4 | | | nr_threads=1 | | | test=numa | | | testtime=60s | +------------------+-------------------------------------------------------------------------------------------------+ Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20231007/202310071416.df82eed7-oliver.sang@intel.com ========================================================================================= class/compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime: cpu/gcc-12/performance/x86_64-rhel-8.3/1/debian-11.1-x86_64-20220510.cgz/lkp-csl-d02/numa/stress-ng/60s commit: 45120b1574 ("mm/damon/vaddr-test: fix memory leak in damon_do_test_apply_three_regions()") 24526268f4 ("mm: mempolicy: keep VMA walk if both MPOL_MF_STRICT and MPOL_MF_MOVE are specified") 45120b15743fa7c0 24526268f4e38c9ec0c4a30de4f ---------------- --------------------------- %stddev %change %stddev \ | \ 272.18 ± 77% -99.9% 0.31 ±220% perf-sched.wait_time.avg.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64 1089 +4.7% 1141 stress-ng.numa.ops 18.16 +4.7% 19.01 stress-ng.numa.ops_per_sec 20387 +5.2% 21456 stress-ng.time.involuntary_context_switches 2.173e+09 +3.6% 2.251e+09 perf-stat.i.branch-instructions 0.50 -3.5% 0.48 perf-stat.i.cpi 1.865e+09 +3.6% 1.932e+09 perf-stat.i.dTLB-loads 1.06e+10 +3.4% 1.096e+10 perf-stat.i.instructions 2.02 +3.8% 2.10 perf-stat.i.ipc 130.34 +3.1% 134.39 perf-stat.i.metric.M/sec 0.50 -3.6% 0.49 perf-stat.overall.cpi 1.99 +3.7% 2.06 perf-stat.overall.ipc 2.139e+09 +3.6% 2.216e+09 perf-stat.ps.branch-instructions 1.836e+09 +3.6% 1.901e+09 perf-stat.ps.dTLB-loads 1.043e+10 +3.4% 1.079e+10 perf-stat.ps.instructions 6.597e+11 +3.4% 6.822e+11 perf-stat.total.instructions 17.43 ± 5% -1.9 15.50 ± 2% perf-profile.calltrace.cycles-pp.queue_folios_pte_range.walk_pmd_range.walk_pud_range.walk_p4d_range.walk_pgd_range 18.49 ± 4% -1.9 16.61 ± 2% perf-profile.calltrace.cycles-pp.walk_pmd_range.walk_pud_range.walk_p4d_range.walk_pgd_range.__walk_page_range 19.07 ± 4% -1.8 17.25 ± 2% perf-profile.calltrace.cycles-pp.walk_pud_range.walk_p4d_range.walk_pgd_range.__walk_page_range.walk_page_range 19.67 ± 4% -1.8 17.86 ± 2% perf-profile.calltrace.cycles-pp.walk_p4d_range.walk_pgd_range.__walk_page_range.walk_page_range.migrate_to_node 3.76 ± 4% -0.4 3.33 ± 9% perf-profile.calltrace.cycles-pp.mt_find.find_vma.queue_pages_test_walk.walk_page_range.migrate_to_node 3.94 ± 4% -0.4 3.53 ± 8% perf-profile.calltrace.cycles-pp.find_vma.queue_pages_test_walk.walk_page_range.migrate_to_node.do_migrate_pages 17.60 ± 4% -1.9 15.71 ± 2% perf-profile.children.cycles-pp.queue_folios_pte_range 18.50 ± 4% -1.9 16.63 ± 2% perf-profile.children.cycles-pp.walk_pmd_range 19.11 ± 4% -1.8 17.29 ± 2% perf-profile.children.cycles-pp.walk_pud_range 19.69 ± 4% -1.8 17.88 ± 2% perf-profile.children.cycles-pp.walk_p4d_range 20.79 ± 4% -1.8 19.02 ± 3% perf-profile.children.cycles-pp.__walk_page_range 0.08 ± 19% +0.1 0.15 ± 17% perf-profile.children.cycles-pp.rcu_all_qs 0.27 ± 9% +0.1 0.35 ± 13% perf-profile.children.cycles-pp.__cond_resched 11.70 ± 6% -1.9 9.84 perf-profile.self.cycles-pp.queue_folios_pte_range 2.01 ± 10% -0.3 1.72 ± 6% perf-profile.self.cycles-pp.vm_normal_folio 0.14 ± 20% +0.1 0.22 ± 16% perf-profile.self.cycles-pp.__cond_resched *************************************************************************************************** lkp-csl-d02: 36 threads 1 sockets Intel(R) Core(TM) i9-10980XE CPU @ 3.00GHz (Cascade Lake) with 128G memory ========================================================================================= class/compiler/cpufreq_governor/disk/fs/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime: os/gcc-12/performance/1HDD/ext4/x86_64-rhel-8.3/1/debian-11.1-x86_64-20220510.cgz/lkp-csl-d02/numa/stress-ng/60s commit: 45120b1574 ("mm/damon/vaddr-test: fix memory leak in damon_do_test_apply_three_regions()") 24526268f4 ("mm: mempolicy: keep VMA walk if both MPOL_MF_STRICT and MPOL_MF_MOVE are specified") 45120b15743fa7c0 24526268f4e38c9ec0c4a30de4f ---------------- --------------------------- %stddev %change %stddev \ | \ 1023 ± 22% -42.3% 590.75 ± 35% sched_debug.cpu.nr_switches.min 1096 +4.5% 1145 stress-ng.numa.ops 18.26 +4.5% 19.08 stress-ng.numa.ops_per_sec 20712 ± 2% +4.6% 21663 stress-ng.time.involuntary_context_switches 6.57 ± 17% -1.4 5.17 ± 12% perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle 5.55 ± 15% -1.0 4.55 ± 9% perf-profile.calltrace.cycles-pp.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call 4.37 ± 17% -0.8 3.60 ± 8% perf-profile.calltrace.cycles-pp.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.cpuidle_enter_state.cpuidle_enter 4.32 ± 17% -0.7 3.57 ± 8% perf-profile.calltrace.cycles-pp.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.cpuidle_enter_state 2.54 ± 17% -0.5 2.08 ± 10% perf-profile.calltrace.cycles-pp.tick_sched_timer.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt 0.20 ± 28% -0.1 0.13 ± 27% perf-profile.children.cycles-pp.irqtime_account_irq 0.13 ± 19% +0.1 0.20 ± 24% perf-profile.children.cycles-pp.hrtimer_start_range_ns 2.068e+09 +3.7% 2.143e+09 perf-stat.i.branch-instructions 0.55 -0.0 0.52 perf-stat.i.branch-miss-rate% 12019422 -4.1% 11526701 perf-stat.i.branch-misses 0.50 -3.5% 0.48 perf-stat.i.cpi 1.767e+09 +3.6% 1.83e+09 perf-stat.i.dTLB-loads 1.009e+10 +3.5% 1.044e+10 perf-stat.i.instructions 19534 +2.4% 20010 perf-stat.i.instructions-per-iTLB-miss 2.03 +3.7% 2.11 perf-stat.i.ipc 123.98 +3.1% 127.81 perf-stat.i.metric.M/sec 0.58 -0.0 0.54 perf-stat.overall.branch-miss-rate% 0.49 -3.6% 0.48 perf-stat.overall.cpi 17843 +2.3% 18252 perf-stat.overall.instructions-per-iTLB-miss 2.02 +3.7% 2.10 perf-stat.overall.ipc 2.035e+09 +3.7% 2.11e+09 perf-stat.ps.branch-instructions 11834693 -4.1% 11344043 perf-stat.ps.branch-misses 1.739e+09 +3.6% 1.801e+09 perf-stat.ps.dTLB-loads 497472 +1.6% 505490 perf-stat.ps.iTLB-loads 9.932e+09 +3.5% 1.028e+10 perf-stat.ps.instructions 6.277e+11 +3.7% 6.512e+11 perf-stat.total.instructions 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