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on: commit: 66987218154918a6341a3e3eeeee58110a69e0bb ("mm/page_alloc: ignore the exact initial compaction result") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master testcase: vm-scalability 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: runtime: 300s test: lru-file-readonce cpufreq_governor: performance Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260206/202602061659.a17e1110-lkp@intel.com ========================================================================================= compiler/cpufreq_governor/kconfig/rootfs/runtime/tbox_group/test/testcase: gcc-14/performance/x86_64-rhel-9.4/debian-13-x86_64-20250902.cgz/300s/lkp-emr-2sp1/lru-file-readonce/vm-scalability commit: d17f02417a ("mm/rmap: separate out fork-only logic on anon_vma_clone()") 6698721815 ("mm/page_alloc: ignore the exact initial compaction result") d17f02417a337de0 66987218154918a6341a3e3eeee ---------------- --------------------------- %stddev %change %stddev \ | \ 2.07 ±201% +213.6% 6.50 ± 96% vmstat.memory.buff 30.09 ± 3% +2.8 32.89 ± 3% mpstat.cpu.all.idle% 0.15 ± 3% +0.0 0.16 ± 3% mpstat.cpu.all.irq% 1.10 +0.1 1.21 mpstat.cpu.all.usr% 29.13 ± 4% +2.7 31.84 ± 2% turbostat.C6% 10961264 -12.1% 9635977 turbostat.IRQ 39.55 +6.9% 42.27 turbostat.RAMWatt 881807 ± 13% -19.1% 713350 ± 4% numa-meminfo.node0.KReclaimable 881807 ± 13% -19.1% 713350 ± 4% numa-meminfo.node0.SReclaimable 1055803 ± 11% -15.9% 888061 ± 4% numa-meminfo.node0.Slab 702201 ± 7% +18.8% 833965 ± 11% numa-meminfo.node2.KReclaimable 702201 ± 7% +18.8% 833965 ± 11% numa-meminfo.node2.SReclaimable 837079 ± 6% +16.2% 973054 ± 10% numa-meminfo.node2.Slab 426746 ± 2% +17.3% 500442 ± 2% vm-scalability.median 1166 ± 28% +1053.6 2219 ± 15% vm-scalability.stddev% 1.11e+08 ± 2% +16.9% 1.297e+08 vm-scalability.throughput 54.43 -10.4% 48.78 vm-scalability.time.elapsed_time 54.43 -10.4% 48.78 vm-scalability.time.elapsed_time.max 103326 ± 4% -15.5% 87260 ± 3% vm-scalability.time.involuntary_context_switches 17909 -3.9% 17205 vm-scalability.time.percent_of_cpu_this_job_got 9605 ± 2% -14.1% 8252 vm-scalability.time.system_time 1.17 ± 24% -0.6 0.58 ± 82% perf-profile.calltrace.cycles-pp.ksys_mmap_pgoff.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.17 ± 24% -0.6 0.58 ± 82% perf-profile.calltrace.cycles-pp.vm_mmap_pgoff.ksys_mmap_pgoff.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.97 ± 37% -0.6 0.40 ± 57% perf-profile.children.cycles-pp.rcu_pending 0.03 ±223% +0.2 0.24 ± 33% perf-profile.children.cycles-pp.__get_user_pages 0.03 ±223% +0.2 0.24 ± 33% perf-profile.children.cycles-pp.get_user_pages_remote 0.27 ± 52% +0.2 0.50 ± 20% perf-profile.children.cycles-pp.load_elf_interp 0.08 ±101% +0.2 0.33 ± 46% perf-profile.children.cycles-pp.get_arg_page 0.59 ± 37% -0.4 0.21 ±102% perf-profile.self.cycles-pp.__percpu_counter_sum 0.03 ±223% +0.2 0.21 ± 30% perf-profile.self.cycles-pp.sched_setaffinity 7.31 ± 2% +19.9% 8.77 ± 4% perf-stat.i.MPKI 58.30 +2.2 60.49 perf-stat.i.cache-miss-rate% 7.426e+08 +17.5% 8.722e+08 perf-stat.i.cache-misses 1.228e+09 +12.0% 1.376e+09 perf-stat.i.cache-references 580.71 ± 7% -16.7% 483.74 ± 3% perf-stat.i.cycles-between-cache-misses 7.41 +18.3% 8.76 ± 5% perf-stat.overall.MPKI 60.61 +3.0 63.61 perf-stat.overall.cache-miss-rate% 704.31 -17.1% 583.78 perf-stat.overall.cycles-between-cache-misses 1296 ± 2% -11.5% 1147 ± 5% perf-stat.overall.path-length 7.497e+08 +16.2% 8.715e+08 perf-stat.ps.cache-misses 1.237e+09 +10.8% 1.37e+09 perf-stat.ps.cache-references 5.281e+11 ± 2% -3.7% 5.086e+11 perf-stat.ps.cpu-cycles 5.569e+12 ± 2% -11.5% 4.928e+12 ± 5% perf-stat.total.instructions 3008740 ± 2% +33.6% 4020245 ± 3% proc-vmstat.allocstall_movable 482140 ± 81% +81.6% 875667 ± 51% proc-vmstat.compact_stall 313239 ± 60% +108.2% 652063 ± 45% proc-vmstat.compact_success 8065 -2.8% 7836 proc-vmstat.nr_page_table_pages 39936876 ± 2% -59.1% 16330199 proc-vmstat.numa_foreign 95893347 -76.7% 22371986 proc-vmstat.numa_hit 95488037 -77.0% 21972039 proc-vmstat.numa_local 39916786 ± 2% -59.1% 16315472 proc-vmstat.numa_miss 40314192 ± 2% -58.5% 16714902 proc-vmstat.numa_other 687855 -2.2% 672475 proc-vmstat.pgfault 37269 -2.4% 36389 proc-vmstat.pgreuse 7.849e+08 -8.8% 7.158e+08 ± 3% proc-vmstat.pgscan_direct 2.277e+08 ± 5% +29.8% 2.956e+08 ± 9% proc-vmstat.pgscan_kswapd 7.849e+08 -8.8% 7.158e+08 ± 3% proc-vmstat.pgsteal_direct 2.277e+08 ± 5% +29.8% 2.956e+08 ± 9% proc-vmstat.pgsteal_kswapd 23897099 -77.3% 5427738 ± 5% numa-numastat.node0.local_node 9808674 ± 3% -65.9% 3340632 ± 3% numa-numastat.node0.numa_foreign 23996306 -76.9% 5539552 ± 4% numa-numastat.node0.numa_hit 9935480 ± 3% -48.6% 5104083 ± 2% numa-numastat.node0.numa_miss 10033238 ± 3% -48.0% 5215298 ± 3% numa-numastat.node0.other_node 23818598 ± 2% -77.6% 5336433 ± 3% numa-numastat.node1.local_node 10422599 ± 4% -60.6% 4107508 ± 5% numa-numastat.node1.numa_foreign 23903690 ± 2% -77.3% 5425282 ± 3% numa-numastat.node1.numa_hit 9568102 ± 3% -62.3% 3606134 ± 2% numa-numastat.node1.numa_miss 9650828 ± 3% -61.7% 3694897 ± 2% numa-numastat.node1.other_node 23244424 -76.6% 5433322 ± 3% numa-numastat.node2.local_node 10157128 ± 2% -58.5% 4212315 ± 3% numa-numastat.node2.numa_foreign 23367486 -76.3% 5531118 ± 3% numa-numastat.node2.numa_hit 9655573 ± 4% -59.5% 3909187 ± 3% numa-numastat.node2.numa_miss 9778660 ± 4% -59.0% 4007790 ± 2% numa-numastat.node2.other_node 24517225 ± 2% -76.5% 5765127 ± 3% numa-numastat.node3.local_node 9548474 ± 4% -51.1% 4669743 ± 4% numa-numastat.node3.numa_foreign 24615123 ± 2% -76.2% 5866615 ± 3% numa-numastat.node3.numa_hit 10757630 ± 2% -65.6% 3696067 ± 3% numa-numastat.node3.numa_miss 10851465 -65.0% 3796917 ± 2% numa-numastat.node3.other_node 1363284 ± 6% +12.5% 1533491 ± 7% numa-vmstat.node0.nr_free_pages_blocks 219953 ± 13% -19.0% 178205 ± 4% numa-vmstat.node0.nr_slab_reclaimable 9808674 ± 3% -65.9% 3340632 ± 3% numa-vmstat.node0.numa_foreign 23996706 -76.9% 5539212 ± 4% numa-vmstat.node0.numa_hit 23897500 -77.3% 5427399 ± 5% numa-vmstat.node0.numa_local 9935480 ± 3% -48.6% 5104083 ± 2% numa-vmstat.node0.numa_miss 10033238 ± 3% -48.0% 5215298 ± 3% numa-vmstat.node0.numa_other 1470383 ± 20% -82.6% 255546 ± 73% numa-vmstat.node0.workingset_nodereclaim 10422599 ± 4% -60.6% 4107508 ± 5% numa-vmstat.node1.numa_foreign 23903980 ± 2% -77.3% 5425155 ± 3% numa-vmstat.node1.numa_hit 23818888 ± 2% -77.6% 5336306 ± 3% numa-vmstat.node1.numa_local 9568102 ± 3% -62.3% 3606134 ± 2% numa-vmstat.node1.numa_miss 9650828 ± 3% -61.7% 3694897 ± 2% numa-vmstat.node1.numa_other 1342994 ± 6% +14.2% 1533478 ± 9% numa-vmstat.node2.nr_free_pages_blocks 175084 ± 7% +19.0% 208437 ± 10% numa-vmstat.node2.nr_slab_reclaimable 10157128 ± 2% -58.5% 4212315 ± 3% numa-vmstat.node2.numa_foreign 23367487 -76.3% 5530880 ± 3% numa-vmstat.node2.numa_hit 23244424 -76.6% 5433084 ± 3% numa-vmstat.node2.numa_local 9655573 ± 4% -59.5% 3909187 ± 3% numa-vmstat.node2.numa_miss 9778660 ± 4% -59.0% 4007790 ± 2% numa-vmstat.node2.numa_other 9548474 ± 4% -51.1% 4669743 ± 4% numa-vmstat.node3.numa_foreign 24615201 ± 2% -76.2% 5866947 ± 3% numa-vmstat.node3.numa_hit 24517303 ± 2% -76.5% 5765459 ± 3% numa-vmstat.node3.numa_local 10757630 ± 2% -65.6% 3696067 ± 3% numa-vmstat.node3.numa_miss 10851465 -65.0% 3796917 ± 2% numa-vmstat.node3.numa_other 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