[linus:master] [sched/fair] 33cf66d883: hackbench.throughput 17.8% regression
kernel test robot <[email protected]>
| Newsgroups | dev.linux.lists.oe-lkp,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
Hello, we reported "[tip:sched/core] [sched/fair] 33cf66d883: vm-scalability.throughput 3.9% improvement" in https://lore.kernel.org/all/[email protected]/ now the commit is in mainline, and we captured a regression from hackbench tests. vm-scalability improvements are still included in the report. FYI. kernel test robot noticed a 17.8% regression of hackbench.throughput on: commit: 33cf66d88306663d16e4759e9d24766b0aaa2e17 ("sched/fair: Proportional newidle balance") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master [still regression on linus/master dd9b004b7ff3289fb7bae35130c0a5c0537266af] [still regression on linux-next/master cc3aa43b44bdb43dfbac0fcb51c56594a11338a8] testcase: hackbench 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% iterations: 4 mode: threads ipc: pipe cpufreq_governor: performance In addition to that, the commit also has significant impact on the following tests: +------------------+----------------------------------------------------------------------------------------------------+ | testcase: change | vm-scalability: vm-scalability.throughput 3.9% improvement | | test machine | 224 threads 4 sockets Intel(R) Xeon(R) Platinum 8380H CPU @ 2.90GHz (Cooper Lake) with 192G memory | | test parameters | cpufreq_governor=performance | | | runtime=300s | | | size=8T | | | test=anon-w-seq-mt | +------------------+----------------------------------------------------------------------------------------------------+ | testcase: change | vm-scalability: vm-scalability.throughput 6.9% improvement | | test machine | 224 threads 4 sockets Intel(R) Xeon(R) Platinum 8380H CPU @ 2.90GHz (Cooper Lake) with 192G memory | | test parameters | cpufreq_governor=performance | | | runtime=300s | | | size=8T | | | test=anon-w-seq | +------------------+----------------------------------------------------------------------------------------------------+ 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 <[email protected]> | Closes: https://lore.kernel.org/oe-lkp/[email protected] Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20251222/[email protected] ========================================================================================= compiler/cpufreq_governor/ipc/iterations/kconfig/mode/nr_threads/rootfs/tbox_group/testcase: gcc-14/performance/pipe/4/x86_64-rhel-9.4/threads/100%/debian-13-x86_64-20250902.cgz/lkp-icl-2sp7/hackbench commit: 08d473dd87 ("sched/fair: Small cleanup to update_newidle_cost()") 33cf66d883 ("sched/fair: Proportional newidle balance") 08d473dd8718e4a4 33cf66d88306663d16e4759e9d2 ---------------- --------------------------- %stddev %change %stddev \ | \ 2796734 ± 55% +32.9% 3716911 ± 45% numa-meminfo.node1.MemUsed 0.73 ± 3% +0.3 1.01 mpstat.cpu.all.irq% 13.17 -1.9 11.28 mpstat.cpu.all.usr% 3.00 +1083.3% 35.50 ± 31% mpstat.max_utilization.seconds 3999110 +10.1% 4402258 ± 2% vmstat.memory.cache 4477499 ± 2% +13.5% 5081114 vmstat.system.cs 326244 ± 2% +20.4% 392931 vmstat.system.in 57.83 ± 25% +7226.5% 4237 ± 24% perf-c2c.DRAM.local 49.17 ± 27% +19835.9% 9801 ± 37% perf-c2c.DRAM.remote 13.00 ± 24% +2.2e+05% 28779 ± 22% perf-c2c.HITM.local 7.67 ± 35% +89197.8% 6846 ± 34% perf-c2c.HITM.remote 20.67 ± 21% +1.7e+05% 35625 ± 22% perf-c2c.HITM.total 901800 ± 2% +45.2% 1309416 ± 9% meminfo.Active 901784 ± 2% +45.2% 1309400 ± 9% meminfo.Active(anon) 63230 +12.0% 70817 meminfo.AnonHugePages 3898764 +10.1% 4291919 ± 2% meminfo.Cached 1045421 ± 2% +39.3% 1456057 ± 8% meminfo.Committed_AS 248500 ± 3% +158.2% 641664 ± 17% meminfo.Shmem 8.14 ± 3% -51.4% 3.96 ± 45% perf-sched.sch_delay.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 8.14 ± 3% -51.4% 3.96 ± 45% perf-sched.total_sch_delay.average.ms 22.81 ± 3% -48.8% 11.67 ± 43% perf-sched.total_wait_and_delay.average.ms 946434 ± 2% +88.9% 1788054 ± 18% perf-sched.total_wait_and_delay.count.ms 14.66 ± 3% -47.4% 7.72 ± 43% perf-sched.total_wait_time.average.ms 22.81 ± 3% -48.8% 11.67 ± 43% perf-sched.wait_and_delay.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 946434 ± 2% +88.9% 1788054 ± 18% perf-sched.wait_and_delay.count.[unknown].[unknown].[unknown].[unknown].[unknown] 14.66 ± 3% -47.4% 7.72 ± 43% perf-sched.wait_time.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 0.13 ± 5% -0.0 0.10 ± 3% turbostat.C1% 4.68 -0.5 4.18 ± 3% turbostat.C6% 2.53 ± 2% -17.7% 2.08 ± 3% turbostat.CPU%c6 0.77 -10.9% 0.68 turbostat.IPC 17255476 ± 2% +43.7% 24791410 turbostat.IRQ 219.17 ± 33% +2e+05% 436508 ± 20% turbostat.NMI 273.53 -1.4% 269.67 turbostat.PkgWatt 14.54 +2.0% 14.83 turbostat.RAMWatt 630734 -17.8% 518722 hackbench.throughput 605546 -17.0% 502866 hackbench.throughput_avg 630734 -17.8% 518722 hackbench.throughput_best 572043 ± 2% -15.6% 482994 hackbench.throughput_worst 50.31 +20.3% 60.50 hackbench.time.elapsed_time 50.31 +20.3% 60.50 hackbench.time.elapsed_time.max 67764693 ± 2% +29.7% 87872106 hackbench.time.involuntary_context_switches 2687 +22.9% 3302 hackbench.time.system_time 413.13 +1.6% 419.62 hackbench.time.user_time 1.678e+08 ± 3% +37.9% 2.314e+08 hackbench.time.voluntary_context_switches 225128 ± 2% +45.8% 328204 ± 9% proc-vmstat.nr_active_anon 974391 +10.2% 1073782 ± 2% proc-vmstat.nr_file_pages 61824 ± 2% +160.8% 161217 ± 18% proc-vmstat.nr_shmem 23019 +1.8% 23427 proc-vmstat.nr_slab_reclaimable 225128 ± 2% +45.8% 328204 ± 9% proc-vmstat.nr_zone_active_anon 58402359 -6.7% 54511492 proc-vmstat.numa_hit 58336619 -6.7% 54440569 proc-vmstat.numa_local 58443581 -6.6% 54564213 proc-vmstat.pgalloc_normal 326135 ± 2% +7.6% 350981 ± 2% proc-vmstat.pgfault 58074498 -7.0% 54016525 proc-vmstat.pgfree 11225 ± 3% +8.3% 12156 ± 2% proc-vmstat.pgreuse 5.25 ± 42% -4.8 0.47 ±141% perf-profile.calltrace.cycles-pp.cmd_record.perf_c2c__record.run_builtin.handle_internal_command.main 5.25 ± 42% -4.8 0.47 ±141% perf-profile.calltrace.cycles-pp.perf_c2c__record.run_builtin.handle_internal_command.main 12.52 ± 20% -4.5 8.00 ± 18% perf-profile.calltrace.cycles-pp.handle_internal_command.main 12.52 ± 20% -4.5 8.00 ± 18% perf-profile.calltrace.cycles-pp.main 12.52 ± 20% -4.5 8.00 ± 18% perf-profile.calltrace.cycles-pp.run_builtin.handle_internal_command.main 5.25 ± 42% -4.8 0.47 ±141% perf-profile.children.cycles-pp.perf_c2c__record 12.52 ± 20% -4.5 8.00 ± 18% perf-profile.children.cycles-pp.handle_internal_command 12.52 ± 20% -4.5 8.00 ± 18% perf-profile.children.cycles-pp.main 12.52 ± 20% -4.5 8.00 ± 18% perf-profile.children.cycles-pp.run_builtin 9.18 ± 11% -2.2 6.94 ± 12% perf-profile.children.cycles-pp.perf_mmap__push 9.18 ± 11% -2.2 6.94 ± 12% perf-profile.children.cycles-pp.record__mmap_read_evlist 1.54 ± 31% -0.8 0.76 ± 72% perf-profile.children.cycles-pp.free_unref_folios 0.31 ± 6% +14.4% 0.35 ± 4% perf-stat.i.MPKI 3.574e+10 -11.6% 3.158e+10 perf-stat.i.branch-instructions 0.29 ± 3% +0.0 0.34 ± 2% perf-stat.i.branch-miss-rate% 87582769 ± 2% +11.6% 97733339 perf-stat.i.branch-misses 12.80 ± 2% +0.7 13.48 ± 3% perf-stat.i.cache-miss-rate% 29195325 ± 4% +21.0% 35312359 ± 2% perf-stat.i.cache-misses 2.274e+08 +20.1% 2.731e+08 perf-stat.i.cache-references 4600492 ± 2% +13.3% 5212966 perf-stat.i.context-switches 1.38 +9.0% 1.50 perf-stat.i.cpi 196117 ± 3% +12.9% 221481 perf-stat.i.cpu-migrations 8508 ± 4% -22.0% 6639 ± 3% perf-stat.i.cycles-between-cache-misses 1.474e+11 -10.9% 1.314e+11 perf-stat.i.instructions 0.77 -10.5% 0.69 perf-stat.i.ipc 74.81 ± 2% +13.6% 85.00 perf-stat.i.metric.K/sec 4599 -5.9% 4326 ± 3% perf-stat.i.minor-faults 4599 -5.9% 4326 ± 3% perf-stat.i.page-faults 0.20 ± 4% +35.5% 0.27 ± 2% perf-stat.overall.MPKI 0.24 ± 2% +0.1 0.31 perf-stat.overall.branch-miss-rate% 1.30 +12.5% 1.46 perf-stat.overall.cpi 6585 ± 4% -17.1% 5460 ± 2% perf-stat.overall.cycles-between-cache-misses 0.77 -11.1% 0.69 perf-stat.overall.ipc 3.51e+10 -11.3% 3.112e+10 perf-stat.ps.branch-instructions 85824759 ± 2% +12.1% 96172996 perf-stat.ps.branch-misses 28546162 ± 4% +21.2% 34607348 ± 2% perf-stat.ps.cache-misses 2.226e+08 +20.6% 2.685e+08 perf-stat.ps.cache-references 4503993 ± 2% +13.8% 5125779 perf-stat.ps.context-switches 190480 ± 3% +13.9% 216966 perf-stat.ps.cpu-migrations 1.448e+11 -10.6% 1.295e+11 perf-stat.ps.instructions 4448 ± 2% -5.7% 4194 ± 3% perf-stat.ps.minor-faults 4448 ± 2% -5.7% 4194 ± 3% perf-stat.ps.page-faults 7.434e+12 +7.3% 7.977e+12 perf-stat.total.instructions 4022 ± 11% +19005.0% 768561 sched_debug.cfs_rq:/.avg_vruntime.avg 63303 ± 20% +1634.0% 1097703 ± 8% sched_debug.cfs_rq:/.avg_vruntime.max 40.66 ± 55% +1.5e+06% 626513 ± 3% sched_debug.cfs_rq:/.avg_vruntime.min 10888 ± 12% +729.2% 90287 ± 7% sched_debug.cfs_rq:/.avg_vruntime.stddev 0.26 ± 19% +2662.0% 7.19 ± 10% sched_debug.cfs_rq:/.h_nr_queued.avg 1.17 ± 31% +1328.6% 16.67 ± 9% sched_debug.cfs_rq:/.h_nr_queued.max 0.44 ± 7% +736.6% 3.69 ± 6% sched_debug.cfs_rq:/.h_nr_queued.stddev 0.26 ± 17% +2683.2% 7.10 ± 10% sched_debug.cfs_rq:/.h_nr_runnable.avg 1.00 +1558.3% 16.58 ± 9% sched_debug.cfs_rq:/.h_nr_runnable.max 0.43 ± 5% +750.0% 3.68 ± 7% sched_debug.cfs_rq:/.h_nr_runnable.stddev 6.24 ±191% +3.3e+05% 20792 ± 60% sched_debug.cfs_rq:/.left_deadline.avg 285.31 ±179% +2.2e+05% 630356 ± 45% sched_debug.cfs_rq:/.left_deadline.max 38.45 ±182% +2.8e+05% 107740 ± 50% sched_debug.cfs_rq:/.left_deadline.stddev 5.13 ±209% +4.1e+05% 20792 ± 60% sched_debug.cfs_rq:/.left_vruntime.avg 250.71 ±205% +2.5e+05% 630327 ± 45% sched_debug.cfs_rq:/.left_vruntime.max 32.50 ±206% +3.3e+05% 107737 ± 50% sched_debug.cfs_rq:/.left_vruntime.stddev 8047 ± 91% +270.1% 29786 ± 25% sched_debug.cfs_rq:/.load.avg 2716 ±118% -64.0% 977.67 ± 25% sched_debug.cfs_rq:/.load_avg.max 443.38 ± 81% -50.2% 220.58 ± 13% sched_debug.cfs_rq:/.load_avg.stddev 0.26 ± 19% +142.9% 0.63 ± 2% sched_debug.cfs_rq:/.nr_queued.avg 0.44 ± 7% -35.7% 0.28 ± 12% sched_debug.cfs_rq:/.nr_queued.stddev 1023 -50.0% 512.00 sched_debug.cfs_rq:/.removed.load_avg.max 242.76 ± 12% -44.6% 134.43 ± 14% sched_debug.cfs_rq:/.removed.load_avg.stddev 521.00 ± 3% -56.5% 226.58 ± 18% sched_debug.cfs_rq:/.removed.runnable_avg.max 89.43 ± 17% -47.1% 47.29 ± 29% sched_debug.cfs_rq:/.removed.runnable_avg.stddev 521.00 ± 3% -56.5% 226.58 ± 18% sched_debug.cfs_rq:/.removed.util_avg.max 89.43 ± 17% -47.2% 47.24 ± 29% sched_debug.cfs_rq:/.removed.util_avg.stddev 5.13 ±209% +4.1e+05% 20792 ± 60% sched_debug.cfs_rq:/.right_vruntime.avg 250.71 ±205% +2.5e+05% 630327 ± 45% sched_debug.cfs_rq:/.right_vruntime.max 32.50 ±206% +3.3e+05% 107737 ± 50% sched_debug.cfs_rq:/.right_vruntime.stddev 419.09 ± 3% +1660.7% 7378 ± 10% sched_debug.cfs_rq:/.runnable_avg.avg 1116 ± 8% +1012.4% 12414 ± 15% sched_debug.cfs_rq:/.runnable_avg.max 311.46 ± 6% +537.6% 1985 ± 12% sched_debug.cfs_rq:/.runnable_avg.stddev 418.39 ± 3% +68.9% 706.65 sched_debug.cfs_rq:/.util_avg.avg 311.42 ± 6% -27.4% 226.04 ± 3% sched_debug.cfs_rq:/.util_avg.stddev 48.78 ± 28% +1188.5% 628.47 ± 11% sched_debug.cfs_rq:/.util_est.avg 1000 ± 2% +153.4% 2534 ± 22% sched_debug.cfs_rq:/.util_est.max 165.60 ± 14% +164.7% 438.41 ± 10% sched_debug.cfs_rq:/.util_est.stddev 3880 ± 11% +19675.4% 767426 sched_debug.cfs_rq:/.zero_vruntime.avg 60092 ± 22% +1721.9% 1094804 ± 8% sched_debug.cfs_rq:/.zero_vruntime.max 40.66 ± 55% +1.5e+06% 626014 ± 3% sched_debug.cfs_rq:/.zero_vruntime.min 10394 ± 12% +766.1% 90022 ± 7% sched_debug.cfs_rq:/.zero_vruntime.stddev 689417 -28.0% 496499 ± 2% sched_debug.cpu.avg_idle.avg 4781 ± 8% +748.8% 40585 ± 9% sched_debug.cpu.avg_idle.min 273724 ± 4% -19.6% 220005 ± 5% sched_debug.cpu.avg_idle.stddev 53241 +57.1% 83652 sched_debug.cpu.clock.avg 53245 +57.2% 83724 sched_debug.cpu.clock.max 53236 +57.0% 83559 sched_debug.cpu.clock.min 2.60 ± 7% +1636.3% 45.23 ± 28% sched_debug.cpu.clock.stddev 52950 +56.8% 83049 sched_debug.cpu.clock_task.avg 53211 +56.7% 83394 sched_debug.cpu.clock_task.max 44851 +66.7% 74757 sched_debug.cpu.clock_task.min 1218 ± 20% +622.9% 8810 sched_debug.cpu.curr->pid.avg 5793 +106.9% 11984 sched_debug.cpu.curr->pid.max 2286 ± 7% -23.5% 1748 ± 17% sched_debug.cpu.curr->pid.stddev 0.00 ± 54% +99.1% 0.00 ± 26% sched_debug.cpu.next_balance.stddev 0.24 ± 20% +2853.8% 7.15 ± 10% sched_debug.cpu.nr_running.avg 1.17 ± 31% +1328.6% 16.67 ± 9% sched_debug.cpu.nr_running.max 0.43 ± 8% +764.5% 3.72 ± 7% sched_debug.cpu.nr_running.stddev 2270 +1.1e+05% 2434691 sched_debug.cpu.nr_switches.avg 9778 ± 11% +27615.8% 2710239 sched_debug.cpu.nr_switches.max 279.33 ± 32% +7.9e+05% 2202298 ± 2% sched_debug.cpu.nr_switches.min 2058 ± 9% +4832.7% 101550 ± 10% sched_debug.cpu.nr_switches.stddev 12.33 ± 18% +200.0% 37.00 ± 13% sched_debug.cpu.nr_uninterruptible.max -10.67 +249.2% -37.25 sched_debug.cpu.nr_uninterruptible.min 4.51 ± 13% +247.7% 15.68 ± 5% sched_debug.cpu.nr_uninterruptible.stddev 53236 +56.9% 83553 sched_debug.cpu_clk 52523 +57.7% 82840 sched_debug.ktime 53984 +56.2% 84309 sched_debug.sched_clk 32696319 +205.2% 99805183 sched_debug.sysctl_sched.sysctl_sched_features *************************************************************************************************** lkp-cpl-4sp2: 224 threads 4 sockets Intel(R) Xeon(R) Platinum 8380H CPU @ 2.90GHz (Cooper Lake) with 192G memory ========================================================================================= compiler/cpufreq_governor/kconfig/rootfs/runtime/size/tbox_group/test/testcase: gcc-14/performance/x86_64-rhel-9.4/debian-13-x86_64-20250902.cgz/300s/8T/lkp-cpl-4sp2/anon-w-seq-mt/vm-scalability commit: 08d473dd87 ("sched/fair: Small cleanup to update_newidle_cost()") 33cf66d883 ("sched/fair: Proportional newidle balance") 08d473dd8718e4a4 33cf66d88306663d16e4759e9d2 ---------------- --------------------------- %stddev %change %stddev \ | \ 140169 ± 11% +20.4% 168807 ± 11% numa-meminfo.node0.Slab 38.84 +3.1 41.95 turbostat.C1% 35883 ± 16% -38.7% 22013 ± 12% sched_debug.cpu.max_idle_balance_cost.stddev 0.25 ± 33% -55.9% 0.11 ± 58% sched_debug.cpu.nr_uninterruptible.avg -89.12 -21.9% -69.57 sched_debug.cpu.nr_uninterruptible.min 32696319 +205.2% 99805183 sched_debug.sysctl_sched.sysctl_sched_features 30.68 -0.4 30.28 perf-profile.calltrace.cycles-pp.do_rw_once 0.59 -0.0 0.56 perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt.do_rw_once 0.07 ± 8% -0.0 0.02 ± 99% perf-profile.children.cycles-pp.schedule 0.08 ± 6% -0.0 0.05 perf-profile.children.cycles-pp.sched_balance_rq 0.08 ± 8% -0.0 0.06 ± 6% perf-profile.children.cycles-pp.__schedule 0.06 -0.0 0.05 perf-profile.self.cycles-pp.___perf_sw_event 0.05 +0.0 0.06 perf-profile.self.cycles-pp.mas_walk 0.08 ± 2% -10.1% 0.07 vm-scalability.free_time 348488 +1.7% 354569 vm-scalability.median 93790815 +3.9% 97486053 vm-scalability.throughput 383366 ± 5% +27.3% 487878 ± 2% vm-scalability.time.involuntary_context_switches 13116 -5.1% 12451 vm-scalability.time.percent_of_cpu_this_job_got 18386 -4.5% 17565 vm-scalability.time.system_time 21178 -5.2% 20069 vm-scalability.time.user_time 274218 -2.3% 267786 vm-scalability.time.voluntary_context_switches 8334443 -6.2% 7821786 proc-vmstat.nr_active_anon 8182472 -6.2% 7672252 proc-vmstat.nr_anon_pages 15772 -6.3% 14776 proc-vmstat.nr_anon_transparent_hugepages 3714681 +1.1% 3753946 proc-vmstat.nr_dirty_background_threshold 7438445 +1.1% 7517071 proc-vmstat.nr_dirty_threshold 37387239 +1.0% 37779422 proc-vmstat.nr_free_pages 37148190 +1.1% 37546282 proc-vmstat.nr_free_pages_blocks 17965 -5.9% 16898 proc-vmstat.nr_page_table_pages 8334431 -6.2% 7821774 proc-vmstat.nr_zone_active_anon 3.38 -2.0% 3.31 perf-stat.i.MPKI 6.728e+10 -2.0% 6.591e+10 perf-stat.i.branch-instructions 0.06 -0.0 0.06 ± 2% perf-stat.i.branch-miss-rate% 26644187 -11.1% 23698025 ± 2% perf-stat.i.branch-misses 66.58 -1.2 65.43 perf-stat.i.cache-miss-rate% 7.144e+08 -3.9% 6.868e+08 perf-stat.i.cache-misses 1.07e+09 -2.3% 1.045e+09 perf-stat.i.cache-references 8866 ± 2% +3.7% 9196 perf-stat.i.context-switches 2.51 -4.4% 2.40 perf-stat.i.cpi 5.33e+11 -6.2% 4.999e+11 perf-stat.i.cpu-cycles 665.04 -8.8% 606.57 perf-stat.i.cpu-migrations 743.32 -2.5% 724.57 perf-stat.i.cycles-between-cache-misses 2.109e+11 -2.1% 2.066e+11 perf-stat.i.instructions 0.40 +4.7% 0.42 perf-stat.i.ipc 3.39 -2.0% 3.33 perf-stat.overall.MPKI 0.03 -0.0 0.03 perf-stat.overall.branch-miss-rate% 66.92 -1.2 65.75 perf-stat.overall.cache-miss-rate% 2.53 -4.6% 2.42 perf-stat.overall.cpi 746.31 -2.6% 726.93 perf-stat.overall.cycles-between-cache-misses 0.39 +4.8% 0.41 perf-stat.overall.ipc 22267708 -8.1% 20466034 perf-stat.ps.branch-misses 6.891e+08 -2.4% 6.726e+08 perf-stat.ps.cache-misses 8639 +3.3% 8927 perf-stat.ps.context-switches 5.143e+11 -4.9% 4.889e+11 perf-stat.ps.cpu-cycles 624.80 -6.6% 583.36 perf-stat.ps.cpu-migrations *************************************************************************************************** lkp-cpl-4sp2: 224 threads 4 sockets Intel(R) Xeon(R) Platinum 8380H CPU @ 2.90GHz (Cooper Lake) with 192G memory ========================================================================================= compiler/cpufreq_governor/kconfig/rootfs/runtime/size/tbox_group/test/testcase: gcc-14/performance/x86_64-rhel-9.4/debian-13-x86_64-20250902.cgz/300s/8T/lkp-cpl-4sp2/anon-w-seq/vm-scalability commit: 08d473dd87 ("sched/fair: Small cleanup to update_newidle_cost()") 33cf66d883 ("sched/fair: Proportional newidle balance") 08d473dd8718e4a4 33cf66d88306663d16e4759e9d2 ---------------- --------------------------- %stddev %change %stddev \ | \ 12868898 ± 8% -13.6% 11117210 ± 6% meminfo.DirectMap2M 22.51 ± 2% +5.1 27.56 mpstat.cpu.all.idle% 4570 ± 6% -8.2% 4195 ± 5% perf-c2c.DRAM.remote 32696319 +205.2% 99805183 sched_debug.sysctl_sched.sysctl_sched_features 25712 +13.8% 29272 uptime.idle 1.544e+10 ± 2% +22.7% 1.895e+10 cpuidle..time 16705139 ± 2% +21.5% 20304654 cpuidle..usage 9686016 ± 9% -11.2% 8601707 ± 10% numa-meminfo.node0.AnonHugePages 9810366 ± 9% -11.5% 8680271 ± 10% numa-meminfo.node0.AnonPages 2.08 ± 10% +38.9% 2.88 ± 14% perf-sched.sch_delay.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 2.08 ± 10% +38.9% 2.88 ± 14% perf-sched.total_sch_delay.average.ms 22.68 ± 2% +5.2 27.82 turbostat.C1% 22.38 ± 2% +22.6% 27.43 turbostat.CPU%c1 5618917 -8.7% 5131336 ± 3% turbostat.NMI 847.70 -1.8% 832.15 turbostat.PkgWatt 43.20 -1.3% 42.66 turbostat.RAMWatt 0.01 -7.0% 0.01 vm-scalability.free_time 347285 +3.1% 358120 vm-scalability.median 2.87 ± 5% +0.5 3.42 ± 9% vm-scalability.median_stddev% 7.35 ± 6% +1.6 8.98 ± 6% vm-scalability.stddev% 82530869 +6.9% 88238114 vm-scalability.throughput 766040 ± 2% +6.1% 812920 vm-scalability.time.involuntary_context_switches 16652 -6.7% 15540 vm-scalability.time.percent_of_cpu_this_job_got 23121 -6.3% 21670 vm-scalability.time.system_time 27174 -7.0% 25266 vm-scalability.time.user_time 108375 +3.4% 112073 vm-scalability.time.voluntary_context_switches 9573443 -7.9% 8820226 proc-vmstat.nr_active_anon 9381538 -7.9% 8641925 proc-vmstat.nr_anon_pages 18112 -8.0% 16669 proc-vmstat.nr_anon_transparent_hugepages 3615325 +1.6% 3673671 proc-vmstat.nr_dirty_background_threshold 7239491 +1.6% 7356326 proc-vmstat.nr_dirty_threshold 36406902 +1.6% 36983177 proc-vmstat.nr_free_pages 36161545 +1.6% 36744053 proc-vmstat.nr_free_pages_blocks 18649 -5.6% 17609 proc-vmstat.nr_page_table_pages 145727 -4.0% 139928 ± 2% proc-vmstat.nr_shmem 9573428 -7.9% 8820214 proc-vmstat.nr_zone_active_anon 4676636 -12.0% 4113946 proc-vmstat.numa_huge_pte_updates 2.395e+09 -12.0% 2.106e+09 proc-vmstat.numa_pte_updates 3.69 -2.6% 3.59 perf-stat.i.MPKI 25933220 ± 2% -7.5% 23983956 perf-stat.i.branch-misses 72.64 -1.7 70.92 perf-stat.i.cache-miss-rate% 8.254e+08 -3.3% 7.985e+08 perf-stat.i.cache-misses 8791 +6.3% 9344 perf-stat.i.context-switches 3.00 -6.3% 2.81 perf-stat.i.cpi 6.733e+11 -7.0% 6.262e+11 perf-stat.i.cpu-cycles 812.82 -3.9% 781.10 perf-stat.i.cycles-between-cache-misses 0.34 +7.0% 0.36 perf-stat.i.ipc 3.70 -2.5% 3.61 perf-stat.overall.MPKI 0.03 -0.0 0.03 perf-stat.overall.branch-miss-rate% 72.83 -1.7 71.16 perf-stat.overall.cache-miss-rate% 3.01 -6.2% 2.83 perf-stat.overall.cpi 814.12 -3.8% 783.11 perf-stat.overall.cycles-between-cache-misses 0.33 +6.6% 0.35 perf-stat.overall.ipc 22052951 -7.8% 20340363 perf-stat.ps.branch-misses 7.949e+08 -2.8% 7.728e+08 perf-stat.ps.cache-misses 8696 +4.7% 9105 perf-stat.ps.context-switches 6.471e+11 -6.5% 6.052e+11 perf-stat.ps.cpu-cycles 569.36 +1.4% 577.21 perf-stat.ps.cpu-migrations 32.67 -0.9 31.80 perf-profile.calltrace.cycles-pp.do_rw_once 44.13 -0.4 43.74 perf-profile.calltrace.cycles-pp.asm_exc_page_fault.do_access 44.00 -0.4 43.62 perf-profile.calltrace.cycles-pp.exc_page_fault.asm_exc_page_fault.do_access 44.00 -0.4 43.62 perf-profile.calltrace.cycles-pp.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.do_access 43.80 -0.4 43.41 perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault 43.86 -0.4 43.48 perf-profile.calltrace.cycles-pp.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.do_access 43.70 -0.4 43.32 perf-profile.calltrace.cycles-pp.__do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault 43.13 -0.4 42.77 perf-profile.calltrace.cycles-pp.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault.do_user_addr_fault 39.61 -0.3 39.28 perf-profile.calltrace.cycles-pp.clear_page_erms.folio_zero_user.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page.__handle_mm_fault 41.47 -0.3 41.16 perf-profile.calltrace.cycles-pp.folio_zero_user.vma_alloc_anon_folio_pmd.__do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault 1.33 ± 21% +1.1 2.48 ± 17% perf-profile.calltrace.cycles-pp.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry 1.34 ± 21% +1.1 2.48 ± 17% perf-profile.calltrace.cycles-pp.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary 1.33 ± 21% +1.1 2.48 ± 16% perf-profile.calltrace.cycles-pp.acpi_safe_halt.acpi_idle_do_entry.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter 1.33 ± 21% +1.2 2.48 ± 17% perf-profile.calltrace.cycles-pp.acpi_idle_do_entry.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call 1.33 ± 21% +1.2 2.48 ± 17% perf-profile.calltrace.cycles-pp.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle 1.36 ± 21% +1.2 2.52 ± 16% perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.common_startup_64 1.36 ± 21% +1.2 2.52 ± 16% perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.common_startup_64 1.36 ± 21% +1.2 2.52 ± 16% perf-profile.calltrace.cycles-pp.start_secondary.common_startup_64 1.35 ± 21% +1.2 2.51 ± 16% perf-profile.calltrace.cycles-pp.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary.common_startup_64 1.37 ± 21% +1.2 2.53 ± 16% perf-profile.calltrace.cycles-pp.common_startup_64 2.50 ± 21% +2.2 4.71 ± 16% perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt.pv_native_safe_halt.acpi_safe_halt.acpi_idle_do_entry.acpi_idle_enter 42.55 -0.5 42.01 perf-profile.children.cycles-pp.do_rw_once 44.04 -0.4 43.65 perf-profile.children.cycles-pp.exc_page_fault 44.19 -0.4 43.80 perf-profile.children.cycles-pp.asm_exc_page_fault 44.04 -0.4 43.65 perf-profile.children.cycles-pp.do_user_addr_fault 43.89 -0.4 43.51 perf-profile.children.cycles-pp.handle_mm_fault 43.82 -0.4 43.44 perf-profile.children.cycles-pp.__handle_mm_fault 43.70 -0.4 43.32 perf-profile.children.cycles-pp.__do_huge_pmd_anonymous_page 43.13 -0.4 42.77 perf-profile.children.cycles-pp.vma_alloc_anon_folio_pmd 42.23 -0.3 41.88 perf-profile.children.cycles-pp.folio_zero_user 39.95 -0.3 39.62 perf-profile.children.cycles-pp.clear_page_erms 0.08 -0.0 0.07 perf-profile.children.cycles-pp.___perf_sw_event 0.45 ± 12% +0.1 0.54 ± 12% perf-profile.children.cycles-pp.drm_atomic_helper_commit 0.45 ± 11% +0.1 0.54 ± 12% perf-profile.children.cycles-pp.drm_atomic_commit 0.48 ± 11% +0.1 0.57 ± 13% perf-profile.children.cycles-pp.worker_thread 0.45 ± 11% +0.1 0.54 ± 13% perf-profile.children.cycles-pp.drm_atomic_helper_dirtyfb 0.45 ± 11% +0.1 0.54 ± 13% perf-profile.children.cycles-pp.drm_fb_helper_damage_work 0.45 ± 11% +0.1 0.54 ± 13% perf-profile.children.cycles-pp.drm_fbdev_shmem_helper_fb_dirty 0.47 ± 11% +0.1 0.56 ± 12% perf-profile.children.cycles-pp.process_one_work 3.27 ± 9% +1.1 4.34 ± 9% perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt 1.34 ± 21% +1.2 2.49 ± 17% perf-profile.children.cycles-pp.acpi_safe_halt 1.34 ± 21% +1.2 2.49 ± 17% perf-profile.children.cycles-pp.pv_native_safe_halt 1.34 ± 21% +1.2 2.49 ± 17% perf-profile.children.cycles-pp.acpi_idle_do_entry 1.34 ± 21% +1.2 2.49 ± 17% perf-profile.children.cycles-pp.acpi_idle_enter 1.34 ± 21% +1.2 2.50 ± 16% perf-profile.children.cycles-pp.cpuidle_enter 1.34 ± 21% +1.2 2.50 ± 16% perf-profile.children.cycles-pp.cpuidle_enter_state 1.36 ± 21% +1.2 2.52 ± 16% perf-profile.children.cycles-pp.start_secondary 1.36 ± 21% +1.2 2.52 ± 16% perf-profile.children.cycles-pp.cpuidle_idle_call 1.37 ± 21% +1.2 2.53 ± 16% perf-profile.children.cycles-pp.common_startup_64 1.37 ± 21% +1.2 2.53 ± 16% perf-profile.children.cycles-pp.cpu_startup_entry 1.37 ± 21% +1.2 2.53 ± 16% perf-profile.children.cycles-pp.do_idle 40.98 -0.6 40.37 perf-profile.self.cycles-pp.do_rw_once 39.02 -0.3 38.71 perf-profile.self.cycles-pp.clear_page_erms 0.99 -0.0 0.94 perf-profile.self.cycles-pp.folio_zero_user 0.44 ± 12% +0.1 0.53 ± 12% perf-profile.self.cycles-pp.memcpy_toio 1.24 ± 21% +1.1 2.34 ± 16% perf-profile.self.cycles-pp.pv_native_safe_halt 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