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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: List-Subscribe: List-Unsubscribe: Hello, kernel test robot noticed a 3.0% improvement of stress-ng.mmap.ops_per_sec on: commit: 9b05890a25d9197e39fcf5b2298f0b911c323306 ("maple_tree: Prefilled sheaf conversion and testing") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master testcase: stress-ng config: x86_64-rhel-9.4 compiler: gcc-14 test machine: 64 threads 2 sockets Intel(R) Xeon(R) Gold 6346 CPU @ 3.10GHz (Ice Lake) with 256G memory parameters: nr_threads: 100% testtime: 60s test: mmap cpufreq_governor: performance In addition to that, the commit also has significant impact on the following tests: +------------------+-------------------------------------------------------------------------------------------+ | testcase: change | stress-ng: stress-ng.tmpfs.ops_per_sec 3.2% improvement | | test machine | 64 threads 2 sockets Intel(R) Xeon(R) Gold 6346 CPU @ 3.10GHz (Ice Lake) with 256G memory | | test parameters | cpufreq_governor=performance | | | nr_threads=100% | | | test=tmpfs | | | testtime=60s | +------------------+-------------------------------------------------------------------------------------------+ Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20251106/202511061420.a984bb7e-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-icl-2sp7/mmap/stress-ng/60s commit: fdbebab19f ("tools/testing: Add support for prefilled slab sheafs") 9b05890a25 ("maple_tree: Prefilled sheaf conversion and testing") fdbebab19f147af6 9b05890a25d9197e39fcf5b2298 ---------------- --------------------------- %stddev %change %stddev \ | \ 14.17 -1.3 12.88 mpstat.cpu.all.sys% 38.05 ± 2% -22.8% 29.38 ± 2% mpstat.max_utilization_pct 13835 ± 11% -29.9% 9698 ± 19% perf-c2c.DRAM.local 4110 ± 4% -17.7% 3381 ± 7% perf-c2c.HITM.local 3.03 ±100% -3.0 0.00 perf-profile.calltrace.cycles-pp.mas_alloc_nodes.mas_preallocate.__mmap_new_vma.__mmap_region.do_mmap 2.72 ±100% -2.7 0.00 perf-profile.calltrace.cycles-pp.mas_alloc_nodes.mas_preallocate.commit_merge.vma_expand.vma_merge_new_range 5.78 ±100% -5.8 0.00 perf-profile.children.cycles-pp.mas_alloc_nodes 7045634 -10.8% 6283116 meminfo.Memused 807198 ± 11% -67.1% 265386 meminfo.SUnreclaim 429663 ± 2% -9.9% 387130 ± 2% meminfo.Shmem 899957 ± 10% -60.2% 358148 meminfo.Slab 417173 ± 41% -67.2% 136751 ± 4% numa-meminfo.node0.SUnreclaim 465472 ± 37% -60.1% 185577 ± 14% numa-meminfo.node0.Slab 390418 ± 30% -66.8% 129555 ± 5% numa-meminfo.node1.SUnreclaim 434877 ± 28% -60.1% 173494 ± 15% numa-meminfo.node1.Slab 5573487 ± 5% +52.3% 8486524 ± 2% numa-numastat.node0.local_node 5603800 ± 4% +51.8% 8506515 ± 2% numa-numastat.node0.numa_hit 5715530 ± 4% +55.4% 8881057 ± 2% numa-numastat.node1.local_node 5752421 ± 4% +55.2% 8927246 ± 2% numa-numastat.node1.numa_hit 0.98 ± 4% -0.1 0.86 turbostat.C1E% 802545 -10.7% 716562 turbostat.NMI 179.86 -1.0% 178.07 turbostat.PkgWatt 16.46 -1.0% 16.29 turbostat.RAMWatt 104549 ± 41% -67.0% 34522 ± 4% numa-vmstat.node0.nr_slab_unreclaimable 5603946 ± 4% +51.8% 8506697 ± 2% numa-vmstat.node0.numa_hit 5573633 ± 5% +52.3% 8486707 ± 2% numa-vmstat.node0.numa_local 97906 ± 29% -66.4% 32924 ± 5% numa-vmstat.node1.nr_slab_unreclaimable 5751995 ± 4% +55.2% 8926887 ± 2% numa-vmstat.node1.numa_hit 5715104 ± 4% +55.4% 8880697 ± 2% numa-vmstat.node1.numa_local 273239 +3.0% 281447 stress-ng.mmap.ops 4554 +3.0% 4690 stress-ng.mmap.ops_per_sec 9280 ± 3% -15.9% 7808 ± 3% stress-ng.time.involuntary_context_switches 7742463 +2.0% 7893647 stress-ng.time.minor_page_faults 933.17 -8.8% 850.83 stress-ng.time.percent_of_cpu_this_job_got 534.72 -9.3% 484.88 stress-ng.time.system_time 337713 -3.1% 327210 proc-vmstat.nr_active_anon 1026876 -1.0% 1016123 proc-vmstat.nr_file_pages 107891 ± 2% -10.0% 97114 ± 2% proc-vmstat.nr_shmem 201980 ± 11% -67.2% 66273 ± 2% proc-vmstat.nr_slab_unreclaimable 337713 -3.1% 327209 proc-vmstat.nr_zone_active_anon 11358395 +53.5% 17435898 proc-vmstat.numa_hit 11291191 +53.8% 17369717 proc-vmstat.numa_local 35250051 +35.6% 47789964 proc-vmstat.pgalloc_normal 8103365 +1.9% 8259384 proc-vmstat.pgfault 34497114 +37.2% 47343827 proc-vmstat.pgfree 13461 +2.4% 13780 proc-vmstat.thp_deferred_split_page 41345 +2.2% 42260 proc-vmstat.thp_fault_alloc 13525 +2.4% 13844 proc-vmstat.thp_split_pmd 28491365 +2.1% 29102247 proc-vmstat.unevictable_pgs_culled 28491780 +2.1% 29102937 proc-vmstat.unevictable_pgs_mlocked 28491774 +2.1% 29102933 proc-vmstat.unevictable_pgs_munlocked 28490836 +2.1% 29101721 proc-vmstat.unevictable_pgs_rescued 1.87 -6.3% 1.75 perf-stat.i.MPKI 7.634e+09 -1.2% 7.543e+09 perf-stat.i.branch-instructions 63.21 -1.7 61.53 perf-stat.i.cache-miss-rate% 67800530 -6.9% 63093634 perf-stat.i.cache-misses 1.067e+08 -4.6% 1.018e+08 perf-stat.i.cache-references 1.08 -6.0% 1.02 perf-stat.i.cpi 3.949e+10 -7.1% 3.668e+10 perf-stat.i.cpu-cycles 229.21 -4.5% 218.93 perf-stat.i.cpu-migrations 0.93 +6.5% 0.99 perf-stat.i.ipc 1.86 -6.3% 1.75 perf-stat.overall.MPKI 63.49 -1.5 61.97 perf-stat.overall.cache-miss-rate% 1.09 -6.5% 1.02 perf-stat.overall.cpi 0.92 +7.0% 0.99 perf-stat.overall.ipc 7.516e+09 -1.3% 7.421e+09 perf-stat.ps.branch-instructions 66736273 -7.0% 62060020 perf-stat.ps.cache-misses 1.051e+08 -4.7% 1.001e+08 perf-stat.ps.cache-references 3.89e+10 -7.2% 3.61e+10 perf-stat.ps.cpu-cycles 226.17 -4.7% 215.61 perf-stat.ps.cpu-migrations *************************************************************************************************** lkp-icl-2sp8: 64 threads 2 sockets Intel(R) Xeon(R) Gold 6346 CPU @ 3.10GHz (Ice Lake) with 256G memory ========================================================================================= 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-icl-2sp8/tmpfs/stress-ng/60s commit: fdbebab19f ("tools/testing: Add support for prefilled slab sheafs") 9b05890a25 ("maple_tree: Prefilled sheaf conversion and testing") fdbebab19f147af6 9b05890a25d9197e39fcf5b2298 ---------------- --------------------------- %stddev %change %stddev \ | \ 1.47 ± 9% +0.4 1.85 ± 9% mpstat.cpu.all.soft% 598993 ± 14% -36.3% 381625 ± 12% meminfo.SUnreclaim 689901 ± 12% -31.4% 473344 ± 10% meminfo.Slab 403.27 -5.2% 382.31 stress-ng.time.system_time 1800 +3.2% 1859 stress-ng.tmpfs.ops_per_sec 315677 ± 33% -37.9% 196080 ± 12% numa-meminfo.node0.SUnreclaim 1446782 ±106% +99.7% 2889569 ± 35% numa-meminfo.node0.Unevictable 283500 ± 25% -34.4% 186029 ± 13% numa-meminfo.node1.SUnreclaim 334463 ± 25% -34.0% 220868 ± 15% numa-meminfo.node1.Slab 701526 ± 8% +216.2% 2218043 ± 3% numa-numastat.node0.local_node 731546 ± 7% +207.8% 2251790 ± 2% numa-numastat.node0.numa_hit 686642 ± 5% +212.7% 2147291 numa-numastat.node1.local_node 723003 ± 5% +201.5% 2179707 numa-numastat.node1.numa_hit 79111 ± 33% -37.6% 49392 ± 12% numa-vmstat.node0.nr_slab_unreclaimable 731773 ± 7% +207.7% 2251794 ± 2% numa-vmstat.node0.numa_hit 701753 ± 8% +216.1% 2218046 ± 3% numa-vmstat.node0.numa_local 71014 ± 25% -33.7% 47056 ± 13% numa-vmstat.node1.nr_slab_unreclaimable 722610 ± 5% +201.4% 2178261 numa-vmstat.node1.numa_hit 686249 ± 5% +212.7% 2145846 numa-vmstat.node1.numa_local 149703 ± 14% -36.3% 95370 ± 12% proc-vmstat.nr_slab_unreclaimable 1457881 ± 6% +204.1% 4433426 proc-vmstat.numa_hit 1391484 ± 6% +213.9% 4367252 proc-vmstat.numa_local 2289318 ± 8% +260.5% 8252931 proc-vmstat.pgalloc_normal 2045446 ± 8% +297.0% 8120146 proc-vmstat.pgfree 6961 ± 2% -5.1% 6607 ± 2% proc-vmstat.pgreuse 9.26 ± 71% -9.3 0.00 perf-profile.calltrace.cycles-pp.__x64_sys_exit_group.x64_sys_call.do_syscall_64.entry_SYSCALL_64_after_hwframe 9.26 ± 71% -9.3 0.00 perf-profile.calltrace.cycles-pp.do_exit.do_group_exit.__x64_sys_exit_group.x64_sys_call.do_syscall_64 9.26 ± 71% -9.3 0.00 perf-profile.calltrace.cycles-pp.do_group_exit.__x64_sys_exit_group.x64_sys_call.do_syscall_64.entry_SYSCALL_64_after_hwframe 9.26 ± 71% -9.3 0.00 perf-profile.calltrace.cycles-pp.x64_sys_call.do_syscall_64.entry_SYSCALL_64_after_hwframe 9.26 ± 71% -9.3 0.00 perf-profile.children.cycles-pp.__x64_sys_exit_group 9.26 ± 71% -9.3 0.00 perf-profile.children.cycles-pp.x64_sys_call 8.13 ± 92% -4.1 4.05 ±144% perf-profile.children.cycles-pp.free_pcppages_bulk 6.31 ± 63% -0.9 5.42 ±146% perf-profile.children.cycles-pp.__schedule 1.99 -5.1% 1.89 perf-stat.i.MPKI 2.678e+10 +2.2% 2.736e+10 perf-stat.i.branch-instructions 38.13 -1.1 36.98 perf-stat.i.cache-miss-rate% 2.698e+08 -2.8% 2.624e+08 perf-stat.i.cache-misses 1.20 -3.0% 1.16 perf-stat.i.cpi 730.94 ± 7% +15.1% 841.39 ± 3% perf-stat.i.cpu-migrations 606.32 +2.2% 619.60 perf-stat.i.cycles-between-cache-misses 1.319e+11 +2.5% 1.352e+11 perf-stat.i.instructions 0.84 +3.0% 0.87 perf-stat.i.ipc 149.32 +3.6% 154.64 perf-stat.i.metric.K/sec 4777975 +3.7% 4952420 perf-stat.i.minor-faults 4777975 +3.7% 4952420 perf-stat.i.page-faults 2.05 -5.2% 1.94 perf-stat.overall.MPKI 1.83 -0.0 1.81 perf-stat.overall.branch-miss-rate% 38.31 -1.2 37.08 perf-stat.overall.cache-miss-rate% 1.22 -3.1% 1.19 perf-stat.overall.cpi 598.57 +2.2% 611.83 perf-stat.overall.cycles-between-cache-misses 0.82 +3.2% 0.84 perf-stat.overall.ipc 2.451e+10 +1.6% 2.489e+10 perf-stat.ps.branch-instructions 2.47e+08 -3.3% 2.388e+08 perf-stat.ps.cache-misses 671.65 ± 8% +14.3% 767.68 ± 3% perf-stat.ps.cpu-migrations 1.207e+11 +1.9% 1.23e+11 perf-stat.ps.instructions 4374027 +3.1% 4507555 perf-stat.ps.minor-faults 4374027 +3.1% 4507555 perf-stat.ps.page-faults 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