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X-OriginatorOrg: intel.com Hello, kernel test robot noticed a 95.0% regression of hackbench.throughput on: commit: 8e98bca9b3d9cd5861cf495a9f7c85256fbeed4c ("bpf,slab: Add slub-backed allocator for bpf_arena") https://github.com/kkdwivedi/linux arena/tmp-slab-nofix testcase: hackbench config: x86_64-rhel-9.4 compiler: gcc-14 test machine: 224 threads 2 sockets Intel(R) Xeon(R) Platinum 8480CTDX (Sapphire Rapids) with 256G memory parameters: nr_threads: 1600% iterations: 4 mode: threads ipc: socket cpufreq_governor: performance In addition to that, the commit also has significant impact on the following tests: +------------------+----------------------------------------------------------------+ | testcase: change | stress-ng: stress-ng.oom-pipe.ops_per_sec 44.9% regression | | test parameters | cpufreq_governor=performance | | | nr_threads=50% | | | test=oom-pipe | | | testtime=60s | +------------------+----------------------------------------------------------------+ | testcase: change | will-it-scale: will-it-scale.per_process_ops 63.8% regression | | test parameters | cpufreq_governor=performance | | | mode=process | | | nr_task=100% | | | test=unix1 | +------------------+----------------------------------------------------------------+ | testcase: change | will-it-scale: will-it-scale.per_thread_ops 62.9% regression | | test parameters | cpufreq_governor=performance | | | mode=thread | | | nr_task=100% | | | test=unix1 | +------------------+----------------------------------------------------------------+ 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 | Closes: https://lore.kernel.org/oe-lkp/202606021456.26349ab2-lkp@intel.com Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260602/202606021456.26349ab2-lkp@intel.com ========================================================================================= compiler/cpufreq_governor/ipc/iterations/kconfig/mode/nr_threads/rootfs/tbox_group/testcase: gcc-14/performance/socket/4/x86_64-rhel-9.4/threads/1600%/debian-13-x86_64-20250902.cgz/lkp-spr-r02/hackbench commit: 7a9a1d643a ("selftests/bpf: Add arena mmap stale-fault coverage") 8e98bca9b3 ("bpf,slab: Add slub-backed allocator for bpf_arena") 7a9a1d643a75c217 8e98bca9b3d9cd5861cf495a9f7 ---------------- --------------------------- %stddev %change %stddev \ | \ 627400 ± 8% -95.0% 31477 ± 2% hackbench.throughput 549027 ± 9% -94.4% 30738 hackbench.throughput_avg 627400 ± 8% -95.0% 31477 ± 2% hackbench.throughput_best 495809 ± 10% -94.0% 29950 hackbench.throughput_worst 249.89 ± 12% +1301.0% 3501 ± 2% hackbench.time.elapsed_time 249.89 ± 12% +1301.0% 3501 ± 2% hackbench.time.elapsed_time.max 79178045 ± 30% +4895.7% 3.955e+09 ± 10% hackbench.time.involuntary_context_switches 2398376 ± 12% +23.5% 2961198 ± 4% hackbench.time.minor_page_faults 19425 +13.0% 21954 hackbench.time.percent_of_cpu_this_job_got 47185 ± 12% +1515.3% 762178 ± 2% hackbench.time.system_time 1368 ± 6% +372.3% 6463 hackbench.time.user_time 2.686e+08 ± 18% +3159.3% 8.755e+09 ± 3% hackbench.time.voluntary_context_switches 392.59 ± 6% +827.1% 3639 ± 2% uptime.boot 2886368 ± 15% +106.3% 5954342 ± 21% numa-numastat.node1.local_node 3011828 ± 14% +101.1% 6058134 ± 21% numa-numastat.node1.numa_hit 24.01 ± 11% -22.1 1.88 ± 20% mpstat.cpu.all.idle% 0.52 ± 11% +0.3 0.82 ± 2% mpstat.cpu.all.irq% 0.06 ± 3% -0.0 0.01 ± 8% mpstat.cpu.all.soft% 73.07 ± 3% +23.4 96.46 mpstat.cpu.all.sys% 2.35 ± 5% -1.5 0.83 mpstat.cpu.all.usr% 26.08 ± 12% -92.4% 1.99 ± 21% vmstat.cpu.id 6485767 ± 5% +20.5% 7812564 vmstat.memory.cache 67002 ± 6% -23.5% 51251 ± 2% vmstat.procs.r 1759167 ± 11% +135.3% 4139345 ± 3% vmstat.system.cs 837789 ± 12% +23.7% 1035934 ± 6% vmstat.system.in 205.17 ± 89% +583.3% 1401 ± 73% numa-meminfo.node0.Mlocked 4315976 ± 15% -65.1% 1504158 ± 45% numa-meminfo.node0.SUnreclaim 4503083 ± 15% -62.5% 1686954 ± 43% numa-meminfo.node0.Slab 2700691 ± 12% +50.3% 4059834 ± 4% numa-meminfo.node1.Active 2700679 ± 12% +50.3% 4059827 ± 4% numa-meminfo.node1.Active(anon) 2884352 ± 41% +72.9% 4987934 ± 36% numa-meminfo.node1.FilePages 614115 ± 27% -57.2% 262985 ± 50% numa-meminfo.node1.Mapped 3435225 ± 18% -64.3% 1225372 ± 62% numa-meminfo.node1.SUnreclaim 2045128 ± 14% +49.8% 3062681 ± 9% numa-meminfo.node1.Shmem 3591411 ± 19% -60.9% 1405859 ± 59% numa-meminfo.node1.Slab 49.47 ± 87% +608.0% 350.26 ± 73% numa-vmstat.node0.nr_mlock 1036287 ± 15% -63.1% 382864 ± 42% numa-vmstat.node0.nr_slab_unreclaimable 673769 ± 11% +50.4% 1013228 ± 4% numa-vmstat.node1.nr_active_anon 720690 ± 40% +73.2% 1248059 ± 36% numa-vmstat.node1.nr_file_pages 150599 ± 30% -56.6% 65357 ± 51% numa-vmstat.node1.nr_mapped 510885 ± 12% +50.1% 766746 ± 9% numa-vmstat.node1.nr_shmem 825828 ± 19% -63.6% 300902 ± 63% numa-vmstat.node1.nr_slab_unreclaimable 673716 ± 11% +50.4% 1013227 ± 4% numa-vmstat.node1.nr_zone_active_anon 3012095 ± 14% +101.1% 6057806 ± 21% numa-vmstat.node1.numa_hit 2886635 ± 15% +106.3% 5954015 ± 21% numa-vmstat.node1.numa_local 1966831 ± 20% +91.5% 3766520 ± 3% perf-stat.i.context-switches 232485 -3.0% 225399 perf-stat.i.cpu-clock 170180 ± 11% +66.6% 283573 ± 5% perf-stat.i.cpu-migrations 24977 ± 11% -86.6% 3357 ± 2% perf-stat.i.minor-faults 24449 ± 12% -86.3% 3355 ± 2% perf-stat.i.page-faults 232486 -3.0% 225399 perf-stat.i.task-clock 1416381 ± 12% +157.4% 3645620 ± 3% perf-stat.ps.context-switches 106700 ± 10% +173.0% 291292 ± 5% perf-stat.ps.cpu-migrations 0.02 ± 32% -70.4% 0.01 ± 40% perf-stat.ps.major-faults 12760 ± 9% -77.6% 2852 ± 2% perf-stat.ps.minor-faults 12760 ± 9% -77.6% 2852 ± 2% perf-stat.ps.page-faults 468.17 ± 73% +694.3% 3718 ± 50% perf-sched.sch_delay.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 17097 ± 49% +699.3% 136655 ± 52% perf-sched.sch_delay.max.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 468.17 ± 73% +694.3% 3718 ± 50% perf-sched.total_sch_delay.average.ms 17097 ± 49% +699.3% 136655 ± 52% perf-sched.total_sch_delay.max.ms 1107 ± 75% +695.9% 8811 ± 50% perf-sched.total_wait_and_delay.average.ms 34021 ± 49% +701.8% 272772 ± 53% perf-sched.total_wait_and_delay.max.ms 638.96 ± 76% +697.0% 5092 ± 50% perf-sched.total_wait_time.average.ms 17063 ± 49% +701.1% 136693 ± 53% perf-sched.total_wait_time.max.ms 1107 ± 75% +695.9% 8811 ± 50% perf-sched.wait_and_delay.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 34021 ± 49% +701.8% 272772 ± 53% perf-sched.wait_and_delay.max.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 638.96 ± 76% +697.0% 5092 ± 50% perf-sched.wait_time.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 17063 ± 49% +701.1% 136693 ± 53% perf-sched.wait_time.max.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 3978628 ± 10% +33.7% 5320494 meminfo.Active 3978601 ± 10% +33.7% 5320472 meminfo.Active(anon) 346298 ± 4% +98.3% 686699 ± 6% meminfo.AnonHugePages 6171775 ± 5% +20.8% 7453200 meminfo.Cached 5138060 ± 8% +27.4% 6544510 meminfo.Committed_AS 700952 ± 27% -52.4% 333495 ± 50% meminfo.Mapped 20278198 ± 3% -21.7% 15883789 meminfo.Memused 191.31 ± 91% +1173.0% 2435 meminfo.Mlocked 27308 ± 3% -6.9% 25414 ± 2% meminfo.PageTables 7839232 ± 5% -65.1% 2734328 ± 4% meminfo.SUnreclaim 2108233 ± 15% +60.8% 3389642 meminfo.Shmem 8182972 ± 4% -62.1% 3097978 ± 3% meminfo.Slab 24549123 -19.3% 19822771 ± 3% meminfo.max_used_kB 2465 ± 3% -100.0% 0.00 turbostat.Avg_MHz 84.95 ± 3% -85.0 0.00 turbostat.Busy% 2902 -100.0% 0.00 turbostat.Bzy_MHz 0.04 ± 30% -0.0 0.00 turbostat.C1% 0.93 ± 19% -0.9 0.00 turbostat.C1E% 13.90 ± 23% -13.9 0.00 turbostat.C6% 4.61 ± 11% -100.0% 0.00 turbostat.CPU%c1 9.08 ± 33% -100.0% 0.00 turbostat.CPU%c6 36.33 ± 12% -100.0% 0.00 turbostat.CoreTmp 0.39 ± 10% -100.0% 0.00 turbostat.IPC 3.167e+08 ± 27% -100.0% 0.00 turbostat.IRQ 12786201 ± 95% -100.0% 0.00 turbostat.NMI 12.34 ± 37% -12.3 0.00 turbostat.PKG_% 0.71 ± 92% -100.0% 0.00 turbostat.Pkg%pc2 1.16 ±137% -100.0% 0.00 turbostat.Pkg%pc6 37.50 ± 11% -100.0% 0.00 turbostat.PkgTmp 612.86 ± 2% -100.0% 0.00 turbostat.PkgWatt 37.62 ± 3% -100.0% 0.00 turbostat.RAMWatt 2000 -100.0% 0.00 turbostat.TSC_MHz 1533 ± 3% -100.0% 0.00 turbostat.UncMHz 989355 ± 10% +34.4% 1329312 proc-vmstat.nr_active_anon 168.44 ± 4% +98.7% 334.62 ± 5% proc-vmstat.nr_anon_transparent_hugepages 6053964 +1.7% 6156963 proc-vmstat.nr_dirty_background_threshold 12122732 +1.7% 12328980 proc-vmstat.nr_dirty_threshold 1539634 ± 5% +21.0% 1863276 proc-vmstat.nr_file_pages 60912929 +1.7% 61944422 proc-vmstat.nr_free_pages 59801078 +1.6% 60767097 proc-vmstat.nr_free_pages_blocks 174747 ± 29% -53.9% 80497 ± 52% proc-vmstat.nr_mapped 48.02 ± 89% +1165.9% 607.96 proc-vmstat.nr_mlock 6822 ± 3% -7.0% 6346 ± 2% proc-vmstat.nr_page_table_pages 523748 ± 15% +61.8% 847385 proc-vmstat.nr_shmem 85652 ± 4% +5.7% 90548 ± 3% proc-vmstat.nr_slab_reclaimable 1900121 ± 6% -64.1% 682996 ± 4% proc-vmstat.nr_slab_unreclaimable 989355 ± 10% +34.4% 1329312 proc-vmstat.nr_zone_active_anon 1031388 ± 19% +40.7% 1451014 ± 7% proc-vmstat.numa_hint_faults 747354 ± 17% +38.6% 1036063 ± 7% proc-vmstat.numa_hint_faults_local 5881713 ± 4% +74.8% 10284133 proc-vmstat.numa_hit 5650134 ± 4% +78.0% 10055823 proc-vmstat.numa_local 297810 ± 35% +50.2% 447245 ± 14% proc-vmstat.numa_pages_migrated 1305706 ± 21% +37.3% 1792565 ± 9% proc-vmstat.numa_pte_updates 17581711 ± 3% +12.3% 19736712 ± 2% proc-vmstat.pgalloc_normal 3391675 ± 9% +203.2% 10282197 ± 2% proc-vmstat.pgfault 16752013 ± 2% +12.0% 18755659 ± 2% proc-vmstat.pgfree 297810 ± 35% +50.2% 447245 ± 14% proc-vmstat.pgmigrate_success 313167 ± 31% +129.3% 718243 ± 5% proc-vmstat.pgreuse 1.549e+08 ± 37% +4473.7% 7.086e+09 ± 18% sched_debug.cfs_rq:/.avg_vruntime.avg 7.097e+08 ± 44% +2727.4% 2.007e+10 ± 23% sched_debug.cfs_rq:/.avg_vruntime.max 34147456 ± 66% +1340.7% 4.92e+08 ± 57% sched_debug.cfs_rq:/.avg_vruntime.min 1.085e+08 ± 61% +4671.6% 5.178e+09 ± 52% sched_debug.cfs_rq:/.avg_vruntime.stddev 69.82 ± 46% +171.8% 189.79 ± 6% sched_debug.cfs_rq:/.h_nr_queued.avg 0.08 ±142% +1051.0% 0.86 ± 7% sched_debug.cfs_rq:/.h_nr_queued.min 68.20 ± 46% +177.9% 189.51 ± 6% sched_debug.cfs_rq:/.h_nr_runnable.avg 0.08 ±142% +1051.0% 0.86 ± 7% sched_debug.cfs_rq:/.h_nr_runnable.min 16900 ± 30% -70.6% 4973 ± 5% sched_debug.cfs_rq:/.load.avg 974431 ± 19% -92.5% 73065 ± 63% sched_debug.cfs_rq:/.load.max 4.21 ±223% +576.8% 28.48 ± 16% sched_debug.cfs_rq:/.load.min 98177 ± 23% -91.5% 8359 ± 37% sched_debug.cfs_rq:/.load.stddev 950.91 ± 27% -91.6% 79.77 ± 39% sched_debug.cfs_rq:/.load_avg.avg 22175 ± 22% -89.8% 2267 ± 11% sched_debug.cfs_rq:/.load_avg.max 3561 ± 20% -90.7% 331.12 ± 27% sched_debug.cfs_rq:/.load_avg.stddev 0.59 ± 25% +64.4% 0.96 sched_debug.cfs_rq:/.nr_queued.avg 1.74 ± 17% -39.4% 1.05 ± 3% sched_debug.cfs_rq:/.nr_queued.max 0.08 ±142% +1018.9% 0.84 ± 6% sched_debug.cfs_rq:/.nr_queued.min 0.29 ± 8% -88.8% 0.03 ± 35% sched_debug.cfs_rq:/.nr_queued.stddev 4.63 ± 77% -86.4% 0.63 ± 20% sched_debug.cfs_rq:/.removed.runnable_avg.avg 221.43 ± 42% -76.5% 52.02 ± 54% sched_debug.cfs_rq:/.removed.runnable_avg.max 27.83 ± 48% -82.1% 4.99 ± 33% sched_debug.cfs_rq:/.removed.runnable_avg.stddev 4.04 ± 71% -86.2% 0.56 ± 23% sched_debug.cfs_rq:/.removed.util_avg.avg 131.64 ± 22% -72.7% 35.94 ± 60% sched_debug.cfs_rq:/.removed.util_avg.max 21.11 ± 33% -81.4% 3.92 ± 32% sched_debug.cfs_rq:/.removed.util_avg.stddev 285182 ± 80% +1202.1% 3713394 ± 5% sched_debug.cfs_rq:/.runnable_avg.avg 167.89 ±121% +538.3% 1071 ± 3% sched_debug.cfs_rq:/.runnable_avg.min 615824 ± 61% +492.6% 3649567 ± 7% sched_debug.cfs_rq:/.runnable_avg.stddev 3.772e+11 ± 82% -96.5% 1.312e+10 ±172% sched_debug.cfs_rq:/.sum_w_vruntime.max 3.435e+10 ± 59% -96.9% 1.07e+09 ±142% sched_debug.cfs_rq:/.sum_w_vruntime.stddev 6287 ± 55% -95.9% 260.20 ±101% sched_debug.cfs_rq:/.sum_weight.avg 623632 ± 29% -91.4% 53709 ±100% sched_debug.cfs_rq:/.sum_weight.max 56102 ± 37% -93.4% 3705 ±101% sched_debug.cfs_rq:/.sum_weight.stddev 583.27 ± 24% +66.6% 971.96 sched_debug.cfs_rq:/.util_avg.avg 33.66 ±101% +1140.2% 417.41 ± 7% sched_debug.cfs_rq:/.util_avg.min 284.14 ± 11% -65.8% 97.27 ± 11% sched_debug.cfs_rq:/.util_avg.stddev 2723 ± 46% +348.1% 12203 ± 27% sched_debug.cfs_rq:/.util_est.avg 16619 ± 24% +117.6% 36159 ± 25% sched_debug.cfs_rq:/.util_est.max 0.86 ±162% +456.5% 4.78 ± 28% sched_debug.cfs_rq:/.util_est.min 3534 ± 36% +217.8% 11235 ± 30% sched_debug.cfs_rq:/.util_est.stddev 1.549e+08 ± 37% +4473.7% 7.086e+09 ± 18% sched_debug.cfs_rq:/.zero_vruntime.avg 7.097e+08 ± 44% +2727.4% 2.007e+10 ± 23% sched_debug.cfs_rq:/.zero_vruntime.max 34147455 ± 66% +1340.7% 4.92e+08 ± 57% sched_debug.cfs_rq:/.zero_vruntime.min 1.085e+08 ± 61% +4671.6% 5.178e+09 ± 52% sched_debug.cfs_rq:/.zero_vruntime.stddev 252801 ± 7% +661.1% 1924112 ± 11% sched_debug.cpu.clock.avg 255958 ± 7% +657.0% 1937570 ± 10% sched_debug.cpu.clock.max 248167 ± 8% +664.4% 1897078 ± 11% sched_debug.cpu.clock.min 2353 ± 81% +377.4% 11235 ± 44% sched_debug.cpu.clock.stddev 252015 ± 7% +657.4% 1908676 ± 11% sched_debug.cpu.clock_task.avg 255257 ± 7% +656.4% 1930657 ± 10% sched_debug.cpu.clock_task.max 232855 ± 8% +698.4% 1859230 ± 11% sched_debug.cpu.clock_task.min 2920 ± 63% +512.5% 17887 ± 24% sched_debug.cpu.clock_task.stddev 84157 ± 19% +52.1% 128016 ± 7% sched_debug.cpu.curr->pid.avg 162370 ± 16% +39.4% 226334 ± 4% sched_debug.cpu.curr->pid.max 495.00 ±223% +2914.6% 14922 ± 19% sched_debug.cpu.curr->pid.min 52810 ± 10% +27.9% 67561 ± 6% sched_debug.cpu.curr->pid.stddev 0.00 ± 80% +374.7% 0.01 ± 44% sched_debug.cpu.next_balance.stddev 69.81 ± 46% +171.9% 189.79 ± 6% sched_debug.cpu.nr_running.avg 0.04 ±223% +1957.5% 0.86 ± 8% sched_debug.cpu.nr_running.min 682034 ± 20% +4154.6% 29017903 ± 11% sched_debug.cpu.nr_switches.avg 2546318 ± 25% +1888.2% 50627024 ± 21% sched_debug.cpu.nr_switches.max 411796 ± 21% +2064.4% 8913057 ± 67% sched_debug.cpu.nr_switches.min 199619 ± 19% +7654.9% 15480250 ± 55% sched_debug.cpu.nr_switches.stddev 1067 ± 22% -59.7% 430.43 ± 30% sched_debug.cpu.nr_uninterruptible.max 247761 ± 8% +664.1% 1893212 ± 11% sched_debug.cpu_clk 0.01 ± 98% -96.7% 0.00 ± 91% sched_debug.dl_rq:.dl_nr_running.avg 0.31 ± 45% -92.5% 0.02 ± 74% sched_debug.dl_rq:.dl_nr_running.max 0.05 ± 68% -94.7% 0.00 ± 80% sched_debug.dl_rq:.dl_nr_running.stddev 246705 ± 8% +667.0% 1892158 ± 11% sched_debug.ktime 250013 ± 8% +658.2% 1895482 ± 11% sched_debug.sched_clk 11.34 ± 32% -11.3 0.00 perf-profile.calltrace.cycles-pp.kmem_cache_alloc_node_noprof.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb.unix_stream_sendmsg 10.67 ± 26% -10.7 0.00 perf-profile.calltrace.cycles-pp.kmem_cache_free.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg.sock_read_iter 8.60 ± 46% -8.6 0.00 perf-profile.calltrace.cycles-pp.__memcg_slab_free_hook.kfree.skb_release_data.consume_skb.unix_stream_read_generic 7.67 ± 46% -7.6 0.08 ±223% perf-profile.calltrace.cycles-pp.unix_stream_read_actor.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg.sock_read_iter 7.64 ± 46% -7.6 0.08 ±223% perf-profile.calltrace.cycles-pp.skb_copy_datagram_iter.unix_stream_read_actor.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg 7.56 ± 46% -7.5 0.08 ±223% perf-profile.calltrace.cycles-pp.__skb_datagram_iter.skb_copy_datagram_iter.unix_stream_read_actor.unix_stream_read_generic.unix_stream_recvmsg 6.95 ± 47% -7.0 0.00 perf-profile.calltrace.cycles-pp.__memcg_slab_post_alloc_hook.kmem_cache_alloc_node_noprof.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb 6.30 ± 48% -6.3 0.00 perf-profile.calltrace.cycles-pp.__memcg_slab_post_alloc_hook.__kmalloc_node_track_caller_noprof.kmalloc_reserve.__alloc_skb.alloc_skb_with_frags 5.84 ± 47% -5.8 0.00 perf-profile.calltrace.cycles-pp.__memcg_slab_free_hook.kmem_cache_free.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg 4.37 ± 47% -4.4 0.00 perf-profile.calltrace.cycles-pp.skb_release_head_state.consume_skb.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg 4.13 ± 47% -4.1 0.00 perf-profile.calltrace.cycles-pp.sock_wfree.skb_release_head_state.consume_skb.unix_stream_read_generic.unix_stream_recvmsg 3.92 ± 51% -3.9 0.00 perf-profile.calltrace.cycles-pp._copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter.unix_stream_read_actor.unix_stream_read_generic 0.00 +0.6 0.60 ± 10% perf-profile.calltrace.cycles-pp.arch_exit_to_user_mode_prepare.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.18 ±223% +1.1 1.27 ± 35% perf-profile.calltrace.cycles-pp.ttwu_do_activate.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_sync_key 1.20 ±108% +2.2 3.42 ± 34% perf-profile.calltrace.cycles-pp.sock_def_readable.unix_stream_sendmsg.sock_write_iter.vfs_write.ksys_write 0.44 ±223% +2.7 3.10 ± 37% perf-profile.calltrace.cycles-pp.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_sync_key.sock_def_readable 0.45 ±223% +2.7 3.11 ± 37% perf-profile.calltrace.cycles-pp.autoremove_wake_function.__wake_up_common.__wake_up_sync_key.sock_def_readable.unix_stream_sendmsg 0.54 ±223% +2.8 3.33 ± 34% perf-profile.calltrace.cycles-pp.__wake_up_sync_key.sock_def_readable.unix_stream_sendmsg.sock_write_iter.vfs_write 0.47 ±223% +2.8 3.30 ± 35% perf-profile.calltrace.cycles-pp.__wake_up_common.__wake_up_sync_key.sock_def_readable.unix_stream_sendmsg.sock_write_iter 0.44 ±223% +3.4 3.84 ± 42% perf-profile.calltrace.cycles-pp.__schedule.schedule.schedule_timeout.unix_stream_data_wait.unix_stream_read_generic 0.45 ±223% +3.4 3.86 ± 41% perf-profile.calltrace.cycles-pp.schedule.schedule_timeout.unix_stream_data_wait.unix_stream_read_generic.unix_stream_recvmsg 0.46 ±223% +3.5 3.92 ± 41% perf-profile.calltrace.cycles-pp.schedule_timeout.unix_stream_data_wait.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg 0.55 ±223% +3.8 4.34 ± 37% perf-profile.calltrace.cycles-pp.unix_stream_data_wait.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg.sock_read_iter 0.83 ±223% +11.3 12.15 ± 20% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.__slab_free.kfree.skb_release_data 0.84 ±223% +11.4 12.21 ± 20% perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.__slab_free.kfree.skb_release_data.consume_skb 0.96 ±196% +12.0 12.96 ± 18% perf-profile.calltrace.cycles-pp.__slab_free.kfree.skb_release_data.consume_skb.unix_stream_read_generic 23.72 ± 33% +49.5 73.19 ± 3% perf-profile.calltrace.cycles-pp.alloc_skb_with_frags.sock_alloc_send_pskb.unix_stream_sendmsg.sock_write_iter.vfs_write 23.59 ± 33% +49.6 73.18 ± 3% perf-profile.calltrace.cycles-pp.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb.unix_stream_sendmsg.sock_write_iter 11.37 ± 34% +61.4 72.75 ± 3% perf-profile.calltrace.cycles-pp.kmalloc_reserve.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb.unix_stream_sendmsg 11.22 ± 34% +61.5 72.74 ± 3% perf-profile.calltrace.cycles-pp.__kmalloc_node_track_caller_noprof.kmalloc_reserve.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb 0.00 +70.8 70.78 ± 3% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.get_from_partial_node.___slab_alloc.__kmalloc_node_track_caller_noprof 0.00 +70.9 70.88 ± 3% perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.get_from_partial_node.___slab_alloc.__kmalloc_node_track_caller_noprof.kmalloc_reserve 0.00 +72.4 72.37 ± 3% perf-profile.calltrace.cycles-pp.get_from_partial_node.___slab_alloc.__kmalloc_node_track_caller_noprof.kmalloc_reserve.__alloc_skb 0.00 +72.5 72.50 ± 3% perf-profile.calltrace.cycles-pp.___slab_alloc.__kmalloc_node_track_caller_noprof.kmalloc_reserve.__alloc_skb.alloc_skb_with_frags 14.54 ± 46% -14.1 0.47 ± 13% perf-profile.children.cycles-pp.__memcg_slab_free_hook 13.41 ± 47% -13.0 0.40 ± 14% perf-profile.children.cycles-pp.__memcg_slab_post_alloc_hook 11.37 ± 32% -11.0 0.37 ± 11% perf-profile.children.cycles-pp.kmem_cache_alloc_node_noprof 10.71 ± 26% -10.4 0.29 ± 7% perf-profile.children.cycles-pp.kmem_cache_free 8.42 ± 21% -8.3 0.15 ± 12% perf-profile.children.cycles-pp.__pcs_replace_empty_main 7.70 ± 46% -7.2 0.46 ± 7% perf-profile.children.cycles-pp.unix_stream_read_actor 7.66 ± 46% -7.2 0.46 ± 6% perf-profile.children.cycles-pp.skb_copy_datagram_iter 7.58 ± 46% -7.1 0.46 ± 6% perf-profile.children.cycles-pp.__skb_datagram_iter 5.00 ± 59% -5.0 0.00 perf-profile.children.cycles-pp.__pcs_replace_full_main 4.56 ± 57% -4.6 0.00 perf-profile.children.cycles-pp.barn_replace_empty_sheaf 4.39 ± 47% -4.2 0.19 ± 7% perf-profile.children.cycles-pp.skb_release_head_state 4.07 ± 60% -4.1 0.00 perf-profile.children.cycles-pp.barn_replace_full_sheaf 4.15 ± 47% -4.0 0.18 ± 7% perf-profile.children.cycles-pp.sock_wfree 4.00 ± 47% -3.8 0.22 ± 9% perf-profile.children.cycles-pp._copy_to_iter 3.84 ± 52% -3.7 0.14 ± 15% perf-profile.children.cycles-pp.refill_objects 3.75 ± 45% -3.4 0.32 ± 6% perf-profile.children.cycles-pp.__check_object_size 3.50 ± 38% -3.4 0.14 ± 15% perf-profile.children.cycles-pp.__refill_objects_node 3.26 ± 46% -3.0 0.22 ± 4% perf-profile.children.cycles-pp.simple_copy_to_iter 3.08 ± 47% -2.8 0.27 ± 5% perf-profile.children.cycles-pp.check_heap_object 2.12 ± 40% -1.9 0.22 ± 4% perf-profile.children.cycles-pp.skb_set_owner_w 1.82 ± 44% -1.8 0.06 ± 9% perf-profile.children.cycles-pp.__account_obj_stock 1.67 ± 41% -1.5 0.17 ± 23% perf-profile.children.cycles-pp.__refill_obj_stock 0.55 ± 41% -0.5 0.03 ± 70% perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack 0.31 ± 34% -0.2 0.09 ± 23% perf-profile.children.cycles-pp.drain_obj_stock 0.06 ± 40% +0.1 0.15 ± 12% perf-profile.children.cycles-pp.hrtimer_start_range_ns 0.01 ±223% +0.1 0.10 ± 26% perf-profile.children.cycles-pp.preempt_schedule_irq 0.16 ± 35% +0.1 0.25 ± 8% perf-profile.children.cycles-pp.__enqueue_entity 0.02 ±223% +0.1 0.14 ± 27% perf-profile.children.cycles-pp.cpuacct_charge 0.11 ± 22% +0.1 0.23 ± 14% perf-profile.children.cycles-pp.__switch_to_asm 0.02 ±223% +0.1 0.16 ± 11% perf-profile.children.cycles-pp.task_h_load 0.02 ±223% +0.2 0.18 ± 9% perf-profile.children.cycles-pp.wake_affine 0.13 ± 89% +0.2 0.33 ± 37% perf-profile.children.cycles-pp.pick_task_fair 0.14 ± 99% +0.2 0.39 ± 28% perf-profile.children.cycles-pp.finish_task_switch 0.32 ± 38% +0.3 0.60 ± 10% perf-profile.children.cycles-pp.arch_exit_to_user_mode_prepare 0.21 ± 37% +0.3 0.54 ± 11% perf-profile.children.cycles-pp.restore_fpregs_from_fpstate 0.23 ± 41% +0.4 0.60 ± 10% perf-profile.children.cycles-pp.switch_fpu_return 0.12 ±223% +0.5 0.59 ± 40% perf-profile.children.cycles-pp.exit_to_user_mode_loop 0.06 ± 60% +0.8 0.89 ± 60% perf-profile.children.cycles-pp.do_perf_trace_sched_wakeup_template 0.06 ± 60% +0.8 0.89 ± 60% perf-profile.children.cycles-pp.perf_trace_sched_wakeup_template 0.07 ±146% +0.9 0.95 ± 30% perf-profile.children.cycles-pp.sched_ttwu_pending 0.10 ±122% +1.0 1.10 ± 28% perf-profile.children.cycles-pp.__flush_smp_call_function_queue 0.03 ±150% +1.0 1.05 ± 26% perf-profile.children.cycles-pp.__sysvec_call_function_single 0.04 ±120% +1.0 1.08 ± 25% perf-profile.children.cycles-pp.sysvec_call_function_single 0.05 ±126% +1.1 1.18 ± 24% perf-profile.children.cycles-pp.asm_sysvec_call_function_single 0.13 ± 34% +1.4 1.50 ± 21% perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore 0.22 ± 92% +1.4 1.60 ± 58% perf-profile.children.cycles-pp.dequeue_entity 0.32 ± 68% +1.4 1.70 ± 40% perf-profile.children.cycles-pp.enqueue_entity 0.33 ± 99% +1.4 1.72 ± 54% perf-profile.children.cycles-pp.dequeue_entities 0.32 ±109% +1.4 1.73 ± 54% perf-profile.children.cycles-pp.dequeue_task_fair 0.32 ±106% +1.4 1.74 ± 54% perf-profile.children.cycles-pp.try_to_block_task 0.42 ± 81% +1.5 1.94 ± 35% perf-profile.children.cycles-pp.enqueue_task_fair 0.46 ± 77% +1.5 2.01 ± 34% perf-profile.children.cycles-pp.enqueue_task 0.51 ± 77% +1.6 2.14 ± 32% perf-profile.children.cycles-pp.ttwu_do_activate 1.26 ±100% +2.2 3.42 ± 34% perf-profile.children.cycles-pp.sock_def_readable 0.92 ± 93% +2.2 3.11 ± 37% perf-profile.children.cycles-pp.autoremove_wake_function 0.90 ± 96% +2.2 3.10 ± 37% perf-profile.children.cycles-pp.try_to_wake_up 1.04 ±100% +2.3 3.33 ± 34% perf-profile.children.cycles-pp.__wake_up_sync_key 0.96 ± 92% +2.3 3.30 ± 35% perf-profile.children.cycles-pp.__wake_up_common 0.02 ±223% +2.6 2.64 ± 68% perf-profile.children.cycles-pp.do_perf_trace_sched_stat_runtime 0.02 ±223% +2.6 2.64 ± 68% perf-profile.children.cycles-pp.perf_trace_sched_stat_runtime 1.24 ± 83% +2.7 3.94 ± 40% perf-profile.children.cycles-pp.schedule_timeout 0.14 ± 91% +2.7 2.86 ± 64% perf-profile.children.cycles-pp.update_se 0.21 ±102% +2.8 2.97 ± 61% perf-profile.children.cycles-pp.update_curr 1.33 ± 94% +3.0 4.37 ± 41% perf-profile.children.cycles-pp.schedule 1.41 ± 93% +3.0 4.46 ± 41% perf-profile.children.cycles-pp.__schedule 0.89 ±122% +3.5 4.35 ± 37% perf-profile.children.cycles-pp.unix_stream_data_wait 0.01 ±223% +4.3 4.30 ± 69% perf-profile.children.cycles-pp.perf_tp_event 23.75 ± 33% +49.4 73.19 ± 3% perf-profile.children.cycles-pp.alloc_skb_with_frags 23.64 ± 33% +49.6 73.19 ± 3% perf-profile.children.cycles-pp.__alloc_skb 11.41 ± 34% +61.3 72.75 ± 3% perf-profile.children.cycles-pp.kmalloc_reserve 11.24 ± 34% +61.5 72.74 ± 3% perf-profile.children.cycles-pp.__kmalloc_node_track_caller_noprof 0.00 +72.5 72.48 ± 3% perf-profile.children.cycles-pp.get_from_partial_node 0.00 +72.5 72.52 ± 3% perf-profile.children.cycles-pp.___slab_alloc 12.40 ± 48% -12.1 0.31 ± 15% perf-profile.self.cycles-pp.__memcg_slab_post_alloc_hook 11.69 ± 47% -11.4 0.30 ± 10% perf-profile.self.cycles-pp.__memcg_slab_free_hook 3.97 ± 47% -3.8 0.20 ± 6% perf-profile.self.cycles-pp._copy_to_iter 3.62 ± 48% -3.5 0.13 ± 7% perf-profile.self.cycles-pp.sock_wfree 3.20 ± 47% -3.0 0.24 ± 6% perf-profile.self.cycles-pp.unix_stream_read_generic 2.70 ± 48% -2.5 0.24 ± 5% perf-profile.self.cycles-pp.check_heap_object 2.09 ± 40% -1.9 0.21 ± 3% perf-profile.self.cycles-pp.skb_set_owner_w 1.53 ± 45% -1.5 0.02 ± 99% perf-profile.self.cycles-pp.__account_obj_stock 1.24 ± 43% -1.2 0.07 ± 18% perf-profile.self.cycles-pp.__refill_obj_stock 1.27 ± 35% -1.2 0.11 ± 10% perf-profile.self.cycles-pp.__refill_objects_node 1.20 ± 44% -1.1 0.06 ± 6% perf-profile.self.cycles-pp.kmem_cache_free 0.77 ± 41% -0.7 0.05 perf-profile.self.cycles-pp.__alloc_skb 0.54 ± 41% -0.5 0.02 ± 99% perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack 0.50 ± 40% -0.5 0.05 perf-profile.self.cycles-pp.do_syscall_64 0.38 ± 49% -0.3 0.07 ± 7% perf-profile.self.cycles-pp.sock_alloc_send_pskb 0.30 ± 34% -0.2 0.08 ± 26% perf-profile.self.cycles-pp.drain_obj_stock 0.01 ±223% +0.1 0.07 ± 16% perf-profile.self.cycles-pp.enqueue_task 0.00 +0.1 0.07 ± 25% perf-profile.self.cycles-pp.__flush_smp_call_function_queue 0.16 ± 35% +0.1 0.25 ± 8% perf-profile.self.cycles-pp.__enqueue_entity 0.02 ±223% +0.1 0.14 ± 28% perf-profile.self.cycles-pp.cpuacct_charge 0.11 ± 22% +0.1 0.23 ± 14% perf-profile.self.cycles-pp.__switch_to_asm 0.02 ±223% +0.1 0.14 ± 8% perf-profile.self.cycles-pp.enqueue_entity 0.02 ±223% +0.1 0.16 ± 11% perf-profile.self.cycles-pp.task_h_load 0.01 ±223% +0.1 0.16 ± 23% perf-profile.self.cycles-pp._raw_spin_unlock_irqrestore 0.02 ±223% +0.2 0.20 ± 8% perf-profile.self.cycles-pp.__wake_up_common 0.00 +0.2 0.24 ± 51% perf-profile.self.cycles-pp.perf_tp_event 0.21 ± 37% +0.3 0.54 ± 11% perf-profile.self.cycles-pp.restore_fpregs_from_fpstate 0.00 +0.7 0.68 ± 2% perf-profile.self.cycles-pp.get_from_partial_node *************************************************************************************************** ========================================================================================= compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime: gcc-14/performance/x86_64-rhel-9.4/50%/debian-13-x86_64-20250902.cgz/lkp-srf-2sp3/oom-pipe/stress-ng/60s commit: 7a9a1d643a ("selftests/bpf: Add arena mmap stale-fault coverage") 8e98bca9b3 ("bpf,slab: Add slub-backed allocator for bpf_arena") 7a9a1d643a75c217 8e98bca9b3d9cd5861cf495a9f7 ---------------- --------------------------- %stddev %change %stddev \ | \ 382.33 ± 2% -42.6% 219.50 ± 8% stress-ng.oom-pipe.ops 5.89 ± 2% -44.9% 3.24 ± 8% stress-ng.oom-pipe.ops_per_sec 70.20 +9.8% 77.10 stress-ng.time.elapsed_time 70.20 +9.8% 77.10 stress-ng.time.elapsed_time.max 58608 ± 2% +4.8% 61401 ± 3% stress-ng.time.involuntary_context_switches 8827 -5.3% 8361 stress-ng.time.percent_of_cpu_this_job_got 6148 +4.4% 6417 stress-ng.time.system_time 47.60 -38.0% 29.49 stress-ng.time.user_time 7.688e+09 ± 3% +14.3% 8.79e+09 ± 2% cpuidle..time 499149 ± 4% +20.5% 601357 ± 2% cpuidle..usage 0.08 ±145% -78.0% 0.02 ± 5% perf-sched.sch_delay.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 0.08 ±145% -78.0% 0.02 ± 5% perf-sched.total_sch_delay.average.ms 18.78 ± 16% -38.0% 11.64 ± 7% sched_debug.cpu.clock.stddev 4972 ± 12% -34.4% 3263 ± 39% sched_debug.cpu.nr_switches.stddev 0.09 ± 3% -0.0 0.07 ± 2% mpstat.cpu.all.irq% 0.15 ± 5% +0.0 0.19 ± 6% mpstat.cpu.all.soft% 0.49 ± 4% -0.2 0.29 mpstat.cpu.all.usr% 1.487e+08 +11.1% 1.652e+08 vmstat.memory.free 4292 ± 5% -12.1% 3773 ± 2% vmstat.system.cs 206020 -3.5% 198729 vmstat.system.in 1.629e+08 +10.3% 1.796e+08 meminfo.MemAvailable 1.474e+08 +11.0% 1.637e+08 meminfo.MemFree 1.121e+08 ± 2% -14.5% 95881640 meminfo.Memused 16056410 ± 2% -10.1% 14430526 meminfo.SUnreclaim 177344 +24.5% 220797 ± 2% meminfo.Shmem 3528 ±102% +584.4% 24148 ± 42% perf-c2c.DRAM.local 636.83 ±101% +916.4% 6472 ± 56% perf-c2c.DRAM.remote 811.67 ±102% +17189.3% 140331 ± 39% perf-c2c.HITM.local 106.50 ±107% +1453.8% 1654 ± 58% perf-c2c.HITM.remote 918.17 ±102% +15364.1% 141986 ± 39% perf-c2c.HITM.total 3403 ± 4% -10.5% 3045 ± 2% perf-stat.i.context-switches 4558 ± 3% -7.8% 4204 perf-stat.i.minor-faults 4558 ± 3% -7.8% 4204 perf-stat.i.page-faults 3962 ± 5% -12.9% 3451 ± 2% perf-stat.ps.context-switches 4336 ± 2% -6.4% 4060 perf-stat.ps.minor-faults 4336 ± 2% -6.4% 4060 perf-stat.ps.page-faults 54.84 +2.3 57.17 turbostat.C1% 0.06 ± 7% +38.5% 0.09 turbostat.IPC 15191975 +6.0% 16104013 turbostat.IRQ 4167355 +6.7% 4444649 turbostat.NMI 218.76 -3.0% 212.10 turbostat.PkgWatt 20.03 -7.2% 18.59 turbostat.RAMWatt 18558145 ± 3% +15.0% 21337333 ± 2% numa-vmstat.node0.nr_free_pages 18159871 ± 3% +13.1% 20538321 ± 2% numa-vmstat.node0.nr_free_pages_blocks 1931372 ± 2% -13.7% 1667339 ± 2% numa-vmstat.node0.nr_slab_reclaimable 2021167 ± 2% -11.6% 1786952 ± 2% numa-vmstat.node0.nr_slab_unreclaimable 18361270 ± 3% +6.8% 19610235 ± 2% numa-vmstat.node1.nr_free_pages 2287444 +17.0% 2676846 numa-vmstat.node1.nr_slab_reclaimable 1984856 -8.4% 1817969 numa-vmstat.node1.nr_slab_unreclaimable 7729551 ± 2% -13.7% 6671235 ± 2% numa-meminfo.node0.KReclaimable 74201522 ± 3% +15.0% 85338386 ± 2% numa-meminfo.node0.MemFree 57450165 ± 3% -19.4% 46313301 ± 4% numa-meminfo.node0.MemUsed 7729551 ± 2% -13.7% 6671235 ± 2% numa-meminfo.node0.SReclaimable 8088977 ± 2% -11.6% 7149513 ± 2% numa-meminfo.node0.SUnreclaim 15818529 ± 2% -12.6% 13820749 ± 2% numa-meminfo.node0.Slab 9156766 +17.0% 10710244 numa-meminfo.node1.KReclaimable 73405823 ± 3% +6.8% 78429460 ± 2% numa-meminfo.node1.MemFree 54538624 ± 4% -9.2% 49514983 ± 3% numa-meminfo.node1.MemUsed 9156766 +17.0% 10710244 numa-meminfo.node1.SReclaimable 7945671 -8.5% 7273618 numa-meminfo.node1.SUnreclaim 17102438 +5.2% 17983863 numa-meminfo.node1.Slab 264048 -4.4% 252356 proc-vmstat.nr_anon_pages 3653922 +11.1% 4059195 proc-vmstat.nr_dirty_background_threshold 7316779 +11.1% 8128315 proc-vmstat.nr_dirty_threshold 1067146 +1.0% 1078005 proc-vmstat.nr_file_pages 36875219 +11.0% 40933894 proc-vmstat.nr_free_pages 35987520 +9.5% 39392209 proc-vmstat.nr_free_pages_blocks 45663 +4.3% 47643 proc-vmstat.nr_mapped 44352 +24.5% 55211 ± 2% proc-vmstat.nr_shmem 4012442 ± 2% -10.1% 3606915 proc-vmstat.nr_slab_unreclaimable 30513385 +1.8% 31059927 proc-vmstat.numa_hit 30313522 +1.8% 30859533 proc-vmstat.numa_local 37665131 +4.6% 39411182 proc-vmstat.pgalloc_normal 435482 +3.5% 450813 proc-vmstat.pgfault 37516588 +4.6% 39257102 proc-vmstat.pgfree 21116 +7.1% 22620 ± 5% proc-vmstat.pgreuse *************************************************************************************************** ========================================================================================= compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase: gcc-14/performance/x86_64-rhel-9.4/process/100%/debian-13-x86_64-20250902.cgz/lkp-ivb-2ep2/unix1/will-it-scale commit: 7a9a1d643a ("selftests/bpf: Add arena mmap stale-fault coverage") 8e98bca9b3 ("bpf,slab: Add slub-backed allocator for bpf_arena") 7a9a1d643a75c217 8e98bca9b3d9cd5861cf495a9f7 ---------------- --------------------------- %stddev %change %stddev \ | \ 16163419 -63.8% 5845331 will-it-scale.48.processes 336737 -63.8% 121777 will-it-scale.per_process_ops 16163419 -63.8% 5845331 will-it-scale.workload 32768 ± 70% +129.5% 75189 ± 42% numa-meminfo.node0.Shmem 8191 ± 70% +129.5% 18799 ± 42% numa-vmstat.node0.nr_shmem 0.50 -38.9% 0.30 turbostat.IPC 30.38 ± 2% -69.9% 9.15 vmstat.cpu.us 1467 ± 2% -5.3% 1389 ± 2% vmstat.system.cs 954689 +6.7% 1018743 meminfo.Active 954658 +6.7% 1018712 meminfo.Active(anon) 1198188 +5.4% 1263167 meminfo.Committed_AS 284027 +22.4% 347750 meminfo.Shmem 0.26 -0.0 0.24 mpstat.cpu.all.irq% 0.02 ± 3% -0.0 0.01 ± 2% mpstat.cpu.all.soft% 67.39 ± 2% +22.0 89.37 mpstat.cpu.all.sys% 30.54 ± 2% -21.3 9.28 mpstat.cpu.all.usr% 1423 ± 2% -6.0% 1339 ± 3% perf-stat.i.context-switches 105.65 +8.9% 115.05 perf-stat.i.cpu-migrations 1421 ± 2% -5.7% 1340 ± 3% perf-stat.ps.context-switches 105.13 +8.8% 114.37 perf-stat.ps.cpu-migrations 1.17 ± 58% +842.9% 11.00 ± 47% perf-c2c.DRAM.local 16.00 ± 32% +143.8% 39.00 ± 7% perf-c2c.DRAM.remote 898.33 ± 25% +1810.7% 17164 ± 3% perf-c2c.HITM.local 13.50 ± 38% +148.1% 33.50 ± 11% perf-c2c.HITM.remote 911.83 ± 25% +1786.1% 17198 ± 3% perf-c2c.HITM.total 238687 +6.7% 254685 proc-vmstat.nr_active_anon 1088241 +1.5% 1104140 proc-vmstat.nr_file_pages 22102 +2.1% 22572 proc-vmstat.nr_mapped 71024 +22.4% 86938 proc-vmstat.nr_shmem 26935 -4.5% 25728 proc-vmstat.nr_slab_unreclaimable 238687 +6.7% 254685 proc-vmstat.nr_zone_active_anon 29.44 -19.6 9.87 perf-profile.calltrace.cycles-pp.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe 28.02 -18.5 9.50 perf-profile.calltrace.cycles-pp.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe 25.18 -16.4 8.78 perf-profile.calltrace.cycles-pp.sock_read_iter.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe 23.86 ± 2% -15.4 8.43 perf-profile.calltrace.cycles-pp.sock_recvmsg.sock_read_iter.vfs_read.ksys_read.do_syscall_64 22.74 ± 2% -14.6 8.14 perf-profile.calltrace.cycles-pp.unix_stream_recvmsg.sock_recvmsg.sock_read_iter.vfs_read.ksys_read 21.79 ± 2% -13.9 7.90 perf-profile.calltrace.cycles-pp.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg.sock_read_iter.vfs_read 14.38 ± 2% -10.6 3.75 perf-profile.calltrace.cycles-pp.entry_SYSRETQ_unsafe_stack 9.84 -7.6 2.20 perf-profile.calltrace.cycles-pp.syscall_return_via_sysret 6.22 -4.6 1.59 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64 6.34 -4.5 1.82 perf-profile.calltrace.cycles-pp.unix_stream_read_actor.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg.sock_read_iter 4.96 -4.3 0.66 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_safe_stack 5.91 -4.2 1.71 perf-profile.calltrace.cycles-pp.skb_copy_datagram_iter.unix_stream_read_actor.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg 5.65 -4.0 1.65 perf-profile.calltrace.cycles-pp.__skb_datagram_iter.skb_copy_datagram_iter.unix_stream_read_actor.unix_stream_read_generic.unix_stream_recvmsg 8.05 ± 4% -3.8 4.22 ± 2% perf-profile.calltrace.cycles-pp.consume_skb.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg.sock_read_iter 4.90 ± 2% -3.8 1.13 ± 2% perf-profile.calltrace.cycles-pp.kmem_cache_alloc_node_noprof.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb.unix_stream_sendmsg 4.61 -3.2 1.41 perf-profile.calltrace.cycles-pp.simple_copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter.unix_stream_read_actor.unix_stream_read_generic 4.26 -2.9 1.34 perf-profile.calltrace.cycles-pp.__check_object_size.simple_copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter.unix_stream_read_actor 3.81 ± 8% -2.9 0.93 ± 3% perf-profile.calltrace.cycles-pp.kmem_cache_free.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg.sock_read_iter 3.98 -2.7 1.26 ± 2% perf-profile.calltrace.cycles-pp.skb_copy_datagram_from_iter.unix_stream_sendmsg.sock_write_iter.vfs_write.ksys_write 3.27 -2.5 0.80 perf-profile.calltrace.cycles-pp.skb_release_head_state.consume_skb.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg 3.10 ± 2% -2.4 0.73 ± 5% perf-profile.calltrace.cycles-pp.__memcg_slab_post_alloc_hook.kmem_cache_alloc_node_noprof.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb 2.50 ± 13% -1.9 0.58 ± 5% perf-profile.calltrace.cycles-pp.__memcg_slab_free_hook.kmem_cache_free.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg 2.88 ± 2% -1.9 1.00 ± 3% perf-profile.calltrace.cycles-pp.__check_object_size.skb_copy_datagram_from_iter.unix_stream_sendmsg.sock_write_iter.vfs_write 3.14 ± 10% -1.8 1.38 ± 4% perf-profile.calltrace.cycles-pp.__memcg_slab_free_hook.kfree.skb_release_data.consume_skb.unix_stream_read_generic 2.62 ± 2% -1.7 0.92 perf-profile.calltrace.cycles-pp.check_heap_object.__check_object_size.simple_copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter 2.57 ± 3% -1.4 1.21 ± 4% perf-profile.calltrace.cycles-pp.__memcg_slab_post_alloc_hook.__kmalloc_node_track_caller_noprof.kmalloc_reserve.__alloc_skb.alloc_skb_with_frags 4.64 ± 7% -1.3 3.38 ± 2% perf-profile.calltrace.cycles-pp.skb_release_data.consume_skb.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg 1.59 ± 3% -0.9 0.67 ± 4% perf-profile.calltrace.cycles-pp.check_heap_object.__check_object_size.skb_copy_datagram_from_iter.unix_stream_sendmsg.sock_write_iter 4.17 ± 8% -0.9 3.27 ± 2% perf-profile.calltrace.cycles-pp.kfree.skb_release_data.consume_skb.unix_stream_read_generic.unix_stream_recvmsg 0.00 +1.1 1.10 perf-profile.calltrace.cycles-pp.__slab_free.kfree.skb_release_data.consume_skb.unix_stream_read_generic 63.37 +27.5 90.85 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe 62.34 +28.3 90.60 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe 29.69 +50.2 79.85 perf-profile.calltrace.cycles-pp.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 28.27 +51.2 79.46 perf-profile.calltrace.cycles-pp.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 24.98 +53.6 78.61 perf-profile.calltrace.cycles-pp.sock_write_iter.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 22.96 +55.2 78.10 perf-profile.calltrace.cycles-pp.unix_stream_sendmsg.sock_write_iter.vfs_write.ksys_write.do_syscall_64 14.04 ± 2% +61.4 75.40 perf-profile.calltrace.cycles-pp.sock_alloc_send_pskb.unix_stream_sendmsg.sock_write_iter.vfs_write.ksys_write 12.78 +61.7 74.43 perf-profile.calltrace.cycles-pp.alloc_skb_with_frags.sock_alloc_send_pskb.unix_stream_sendmsg.sock_write_iter.vfs_write 12.20 +62.0 74.24 perf-profile.calltrace.cycles-pp.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb.unix_stream_sendmsg.sock_write_iter 0.00 +67.0 67.03 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.get_from_partial_node.___slab_alloc.__kmalloc_node_track_caller_noprof 0.00 +67.7 67.73 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.get_from_partial_node.___slab_alloc.__kmalloc_node_track_caller_noprof.kmalloc_reserve 4.56 ± 2% +67.9 72.50 perf-profile.calltrace.cycles-pp.kmalloc_reserve.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb.unix_stream_sendmsg 3.62 ± 2% +68.6 72.26 perf-profile.calltrace.cycles-pp.__kmalloc_node_track_caller_noprof.kmalloc_reserve.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb 0.00 +70.7 70.69 perf-profile.calltrace.cycles-pp.get_from_partial_node.___slab_alloc.__kmalloc_node_track_caller_noprof.kmalloc_reserve.__alloc_skb 0.00 +70.8 70.79 perf-profile.calltrace.cycles-pp.___slab_alloc.__kmalloc_node_track_caller_noprof.kmalloc_reserve.__alloc_skb.alloc_skb_with_frags 29.48 -19.6 9.88 perf-profile.children.cycles-pp.ksys_read 28.05 -18.5 9.50 perf-profile.children.cycles-pp.vfs_read 25.20 -16.4 8.78 perf-profile.children.cycles-pp.sock_read_iter 23.92 ± 2% -15.5 8.44 perf-profile.children.cycles-pp.sock_recvmsg 22.77 ± 2% -14.6 8.15 perf-profile.children.cycles-pp.unix_stream_recvmsg 21.92 ± 2% -14.0 7.94 perf-profile.children.cycles-pp.unix_stream_read_generic 15.56 ± 2% -11.5 4.01 perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack 10.01 -7.8 2.24 perf-profile.children.cycles-pp.syscall_return_via_sysret 8.22 -6.2 2.04 perf-profile.children.cycles-pp.entry_SYSCALL_64 7.27 -4.9 2.37 perf-profile.children.cycles-pp.__check_object_size 6.37 -4.5 1.83 perf-profile.children.cycles-pp.unix_stream_read_actor 5.96 -4.2 1.72 perf-profile.children.cycles-pp.skb_copy_datagram_iter 5.68 -4.0 1.66 perf-profile.children.cycles-pp.__skb_datagram_iter 8.08 ± 4% -3.9 4.23 ± 2% perf-profile.children.cycles-pp.consume_skb 5.81 ± 2% -3.8 1.99 ± 4% perf-profile.children.cycles-pp.__memcg_slab_post_alloc_hook 4.90 ± 2% -3.8 1.13 ± 2% perf-profile.children.cycles-pp.kmem_cache_alloc_node_noprof 5.73 ± 9% -3.7 1.99 ± 3% perf-profile.children.cycles-pp.__memcg_slab_free_hook 4.62 -3.2 1.41 perf-profile.children.cycles-pp.simple_copy_to_iter 3.82 ± 8% -2.9 0.94 ± 4% perf-profile.children.cycles-pp.kmem_cache_free 4.03 -2.8 1.27 ± 2% perf-profile.children.cycles-pp.skb_copy_datagram_from_iter 4.31 ± 2% -2.7 1.61 ± 2% perf-profile.children.cycles-pp.check_heap_object 3.19 ± 4% -2.5 0.65 ± 11% perf-profile.children.cycles-pp.__virt_addr_valid 3.33 -2.5 0.81 perf-profile.children.cycles-pp.skb_release_head_state 2.97 -2.3 0.66 perf-profile.children.cycles-pp.entry_SYSCALL_64_safe_stack 2.24 ± 4% -1.6 0.60 ± 3% perf-profile.children.cycles-pp.fdget_pos 1.89 -1.4 0.46 perf-profile.children.cycles-pp.sock_wfree 1.81 ± 2% -1.3 0.51 ± 2% perf-profile.children.cycles-pp.__check_heap_object 4.67 ± 7% -1.3 3.39 ± 2% perf-profile.children.cycles-pp.skb_release_data 1.60 -0.9 0.69 perf-profile.children.cycles-pp._raw_spin_lock 4.18 ± 8% -0.9 3.29 ± 2% perf-profile.children.cycles-pp.kfree 1.19 ± 5% -0.8 0.34 ± 3% perf-profile.children.cycles-pp.rw_verify_area 1.10 -0.8 0.27 ± 2% perf-profile.children.cycles-pp.unix_wfree 0.95 ± 2% -0.7 0.21 perf-profile.children.cycles-pp.sock_def_readable 1.14 ± 8% -0.7 0.40 ± 3% perf-profile.children.cycles-pp.testcase 0.94 -0.7 0.24 ± 3% perf-profile.children.cycles-pp.unix_write_space 0.90 ± 2% -0.7 0.20 perf-profile.children.cycles-pp.__account_obj_stock 0.96 ± 11% -0.7 0.30 ± 21% perf-profile.children.cycles-pp.__refill_obj_stock 0.66 -0.5 0.16 ± 2% perf-profile.children.cycles-pp.__x86_indirect_thunk_rax 0.65 ± 2% -0.5 0.16 ± 2% perf-profile.children.cycles-pp.kmalloc_size_roundup 0.64 ± 2% -0.5 0.15 ± 3% perf-profile.children.cycles-pp._copy_from_iter 0.69 ± 6% -0.5 0.22 ± 4% perf-profile.children.cycles-pp.security_file_permission 0.61 ± 8% -0.5 0.15 ± 10% perf-profile.children.cycles-pp._copy_to_iter 0.67 ± 19% -0.5 0.22 ± 20% perf-profile.children.cycles-pp.__mod_memcg_state 0.55 -0.4 0.14 ± 3% perf-profile.children.cycles-pp.unix_destruct_scm 0.54 ± 4% -0.4 0.13 ± 3% perf-profile.children.cycles-pp.scm_recv_unix 0.58 ± 4% -0.4 0.19 ± 2% perf-profile.children.cycles-pp.x64_sys_call 0.54 ± 5% -0.4 0.14 ± 5% perf-profile.children.cycles-pp.rep_movs_alternative 0.48 -0.3 0.14 ± 2% perf-profile.children.cycles-pp.prandom_u32_state 0.39 ± 3% -0.3 0.09 ± 4% perf-profile.children.cycles-pp.check_stack_object 0.40 -0.3 0.11 ± 4% perf-profile.children.cycles-pp.mutex_lock 0.36 ± 13% -0.3 0.10 ± 21% perf-profile.children.cycles-pp.__css_rstat_updated 0.31 ± 2% -0.2 0.06 perf-profile.children.cycles-pp.__local_bh_enable_ip 0.33 ± 3% -0.2 0.08 ± 5% perf-profile.children.cycles-pp.__scm_recv_common 0.33 ± 5% -0.2 0.09 ± 5% perf-profile.children.cycles-pp.mutex_unlock 0.22 -0.2 0.02 ± 99% perf-profile.children.cycles-pp.is_vmalloc_addr 0.23 ± 5% -0.2 0.05 perf-profile.children.cycles-pp.security_socket_sendmsg 0.22 ± 4% -0.2 0.05 perf-profile.children.cycles-pp.security_socket_recvmsg 0.21 ± 2% -0.2 0.06 ± 9% perf-profile.children.cycles-pp._raw_spin_unlock 0.18 ± 3% -0.1 0.04 ± 44% perf-profile.children.cycles-pp.put_pid 0.17 ± 24% -0.1 0.06 ± 13% perf-profile.children.cycles-pp.write 0.34 ± 2% -0.1 0.28 perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt 0.38 -0.1 0.32 ± 2% perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt 0.26 ± 2% -0.1 0.19 ± 2% perf-profile.children.cycles-pp.__hrtimer_run_queues 0.21 ± 2% -0.1 0.16 ± 3% perf-profile.children.cycles-pp.update_process_times 0.23 -0.1 0.18 ± 2% perf-profile.children.cycles-pp.tick_nohz_handler 0.30 ± 3% -0.1 0.24 perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt 0.29 ± 2% -0.1 0.24 ± 3% perf-profile.children.cycles-pp.hrtimer_interrupt 0.36 ± 3% -0.0 0.33 ± 4% perf-profile.children.cycles-pp.trylock_stock 0.14 ± 3% -0.0 0.11 ± 3% perf-profile.children.cycles-pp.sched_tick 0.09 ± 4% -0.0 0.07 ± 5% perf-profile.children.cycles-pp.task_tick_fair 0.00 +0.1 0.05 perf-profile.children.cycles-pp.__pcs_replace_empty_main 0.00 +0.1 0.06 ± 11% perf-profile.children.cycles-pp.__pcs_replace_full_main 0.00 +0.2 0.25 ± 3% perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore 0.00 +1.1 1.10 perf-profile.children.cycles-pp.__slab_free 63.59 +27.3 90.94 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 62.54 +28.1 90.69 perf-profile.children.cycles-pp.do_syscall_64 29.77 +50.1 79.90 perf-profile.children.cycles-pp.ksys_write 28.32 +51.2 79.50 perf-profile.children.cycles-pp.vfs_write 25.04 +53.6 78.63 perf-profile.children.cycles-pp.sock_write_iter 23.12 +55.0 78.14 perf-profile.children.cycles-pp.unix_stream_sendmsg 14.08 ± 2% +61.3 75.42 perf-profile.children.cycles-pp.sock_alloc_send_pskb 12.79 +61.6 74.44 perf-profile.children.cycles-pp.alloc_skb_with_frags 12.31 +62.0 74.27 perf-profile.children.cycles-pp.__alloc_skb 0.00 +67.0 67.04 perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath 0.00 +67.8 67.76 perf-profile.children.cycles-pp._raw_spin_lock_irqsave 4.61 ± 2% +67.9 72.50 perf-profile.children.cycles-pp.kmalloc_reserve 3.66 ± 2% +68.6 72.26 perf-profile.children.cycles-pp.__kmalloc_node_track_caller_noprof 0.00 +70.7 70.70 perf-profile.children.cycles-pp.get_from_partial_node 0.00 +70.8 70.79 perf-profile.children.cycles-pp.___slab_alloc 15.39 ± 2% -11.4 3.96 perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack 9.89 -7.7 2.23 perf-profile.self.cycles-pp.syscall_return_via_sysret 8.22 -6.2 2.04 perf-profile.self.cycles-pp.entry_SYSCALL_64 4.76 -3.3 1.50 ± 4% perf-profile.self.cycles-pp.__memcg_slab_post_alloc_hook 4.20 ± 12% -2.6 1.56 ± 3% perf-profile.self.cycles-pp.__memcg_slab_free_hook 3.12 ± 4% -2.5 0.63 ± 11% perf-profile.self.cycles-pp.__virt_addr_valid 2.69 ± 3% -2.0 0.66 ± 2% perf-profile.self.cycles-pp.vfs_write 2.58 ± 3% -2.0 0.58 perf-profile.self.cycles-pp.__alloc_skb 2.43 -1.9 0.58 perf-profile.self.cycles-pp.unix_stream_sendmsg 2.22 ± 2% -1.7 0.55 ± 2% perf-profile.self.cycles-pp.vfs_read 2.20 ± 4% -1.6 0.58 ± 3% perf-profile.self.cycles-pp.fdget_pos 1.85 ± 4% -1.4 0.46 perf-profile.self.cycles-pp.do_syscall_64 1.65 ± 4% -1.3 0.36 ± 5% perf-profile.self.cycles-pp.kmem_cache_alloc_node_noprof 1.79 ± 2% -1.3 0.51 ± 2% perf-profile.self.cycles-pp.__check_heap_object 1.72 -1.3 0.44 perf-profile.self.cycles-pp.sock_write_iter 1.54 ± 3% -1.1 0.41 ± 2% perf-profile.self.cycles-pp.unix_stream_read_generic 1.29 -1.0 0.34 perf-profile.self.cycles-pp.sock_read_iter 1.27 -0.9 0.34 ± 5% perf-profile.self.cycles-pp.kmem_cache_free 1.54 -0.9 0.67 perf-profile.self.cycles-pp._raw_spin_lock 1.06 ± 2% -0.9 0.20 ± 2% perf-profile.self.cycles-pp.__kmalloc_node_track_caller_noprof 1.09 -0.8 0.26 perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe 0.96 -0.8 0.21 perf-profile.self.cycles-pp.entry_SYSCALL_64_safe_stack 0.94 -0.7 0.22 ± 2% perf-profile.self.cycles-pp.sock_wfree 0.94 ± 4% -0.7 0.24 ± 2% perf-profile.self.cycles-pp.sock_recvmsg 0.88 ± 3% -0.7 0.18 ± 2% perf-profile.self.cycles-pp.__check_object_size 0.89 ± 2% -0.7 0.20 perf-profile.self.cycles-pp.sock_def_readable 1.08 ± 8% -0.7 0.39 perf-profile.self.cycles-pp.testcase 0.89 -0.7 0.22 ± 3% perf-profile.self.cycles-pp.unix_write_space 0.86 ± 4% -0.6 0.22 ± 3% perf-profile.self.cycles-pp.unix_stream_recvmsg 0.82 ± 2% -0.6 0.19 ± 2% perf-profile.self.cycles-pp.__account_obj_stock 0.66 ± 6% -0.4 0.22 ± 3% perf-profile.self.cycles-pp.security_file_permission 0.60 -0.4 0.16 ± 3% perf-profile.self.cycles-pp.kmalloc_size_roundup 0.50 -0.4 0.13 perf-profile.self.cycles-pp.__x86_indirect_thunk_rax 0.49 ± 3% -0.4 0.12 ± 4% perf-profile.self.cycles-pp.rw_verify_area 0.50 ± 10% -0.4 0.13 ± 23% perf-profile.self.cycles-pp.__refill_obj_stock 0.50 ± 5% -0.4 0.13 ± 5% perf-profile.self.cycles-pp.rep_movs_alternative 0.48 -0.4 0.12 perf-profile.self.cycles-pp.unix_destruct_scm 0.46 -0.4 0.10 ± 4% perf-profile.self.cycles-pp.skb_copy_datagram_from_iter 0.52 ± 4% -0.4 0.17 ± 2% perf-profile.self.cycles-pp.x64_sys_call 0.44 ± 6% -0.3 0.10 ± 5% perf-profile.self.cycles-pp.__skb_datagram_iter 0.45 -0.3 0.11 ± 6% perf-profile.self.cycles-pp.unix_wfree 0.48 ± 3% -0.3 0.16 perf-profile.self.cycles-pp.alloc_skb_with_frags 0.44 ± 2% -0.3 0.14 ± 3% perf-profile.self.cycles-pp.prandom_u32_state 0.38 -0.3 0.10 ± 3% perf-profile.self.cycles-pp.mutex_lock 0.36 ± 2% -0.3 0.08 ± 4% perf-profile.self.cycles-pp._copy_from_iter 0.38 ± 3% -0.3 0.10 ± 6% perf-profile.self.cycles-pp.unix_stream_read_actor 0.36 ± 12% -0.3 0.10 ± 17% perf-profile.self.cycles-pp._copy_to_iter 0.34 ± 4% -0.3 0.07 ± 6% perf-profile.self.cycles-pp.check_stack_object 0.33 ± 2% -0.3 0.07 perf-profile.self.cycles-pp.skb_release_head_state 0.99 ± 4% -0.3 0.73 perf-profile.self.cycles-pp.kfree 0.35 ± 13% -0.3 0.10 ± 21% perf-profile.self.cycles-pp.__css_rstat_updated 0.35 -0.3 0.09 ± 4% perf-profile.self.cycles-pp.ksys_read 0.36 -0.3 0.11 perf-profile.self.cycles-pp.ksys_write 0.29 ± 3% -0.2 0.04 ± 44% perf-profile.self.cycles-pp.simple_copy_to_iter 0.33 ± 3% -0.2 0.08 ± 5% perf-profile.self.cycles-pp.skb_release_data 0.31 ± 3% -0.2 0.07 perf-profile.self.cycles-pp.kmalloc_reserve 0.32 ± 4% -0.2 0.09 ± 5% perf-profile.self.cycles-pp.mutex_unlock 0.29 ± 2% -0.2 0.06 perf-profile.self.cycles-pp.__local_bh_enable_ip 0.28 ± 4% -0.2 0.06 perf-profile.self.cycles-pp.skb_copy_datagram_iter 0.28 ± 3% -0.2 0.07 ± 5% perf-profile.self.cycles-pp.__scm_recv_common 0.42 ± 5% -0.2 0.22 ± 3% perf-profile.self.cycles-pp.sock_alloc_send_pskb 0.29 ± 30% -0.2 0.12 ± 22% perf-profile.self.cycles-pp.__mod_memcg_state 0.21 ± 8% -0.2 0.05 perf-profile.self.cycles-pp.scm_recv_unix 0.18 ± 2% -0.2 0.02 ± 99% perf-profile.self.cycles-pp._raw_spin_unlock 0.19 ± 3% -0.2 0.03 ± 70% perf-profile.self.cycles-pp.security_socket_recvmsg 0.16 ± 2% -0.1 0.03 ± 70% perf-profile.self.cycles-pp.consume_skb 0.00 +0.1 0.05 perf-profile.self.cycles-pp.__pcs_replace_empty_main 0.00 +0.1 0.05 ± 13% perf-profile.self.cycles-pp.__pcs_replace_full_main 0.00 +0.1 0.10 ± 4% perf-profile.self.cycles-pp.___slab_alloc 0.00 +0.7 0.73 perf-profile.self.cycles-pp._raw_spin_lock_irqsave 0.00 +1.1 1.09 perf-profile.self.cycles-pp.__slab_free 0.00 +2.7 2.70 perf-profile.self.cycles-pp.get_from_partial_node 0.00 +67.0 67.03 perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath *************************************************************************************************** ========================================================================================= compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase: gcc-14/performance/x86_64-rhel-9.4/thread/100%/debian-13-x86_64-20250902.cgz/lkp-ivb-2ep2/unix1/will-it-scale commit: 7a9a1d643a ("selftests/bpf: Add arena mmap stale-fault coverage") 8e98bca9b3 ("bpf,slab: Add slub-backed allocator for bpf_arena") 7a9a1d643a75c217 8e98bca9b3d9cd5861cf495a9f7 ---------------- --------------------------- %stddev %change %stddev \ | \ 15765888 -62.9% 5849939 will-it-scale.48.threads 328455 -62.9% 121873 will-it-scale.per_thread_ops 15765888 -62.9% 5849939 will-it-scale.workload 30.36 ± 2% -69.2% 9.35 vmstat.cpu.us 1463 -4.3% 1400 vmstat.system.cs 949369 +6.8% 1013747 meminfo.Active 949338 +6.8% 1013716 meminfo.Active(anon) 281267 +22.9% 345663 meminfo.Shmem 116719 ± 6% -9.9% 105134 ± 2% sched_debug.cfs_rq:/.avg_vruntime.stddev 16.72 -11.6% 14.78 ± 7% sched_debug.cfs_rq:/.load_avg.min 116719 ± 6% -9.9% 105134 ± 2% sched_debug.cfs_rq:/.zero_vruntime.stddev 173.38 -3.7% 166.89 turbostat.CorWatt 0.50 -38.2% 0.31 turbostat.IPC 202.59 -3.2% 196.06 turbostat.PkgWatt 0.26 -0.0 0.24 mpstat.cpu.all.irq% 0.02 -0.0 0.01 ± 2% mpstat.cpu.all.soft% 68.56 +20.8 89.35 mpstat.cpu.all.sys% 30.55 ± 2% -21.0 9.57 mpstat.cpu.all.usr% 13.00 ± 25% +166.7% 34.67 ± 11% perf-c2c.DRAM.remote 776.00 ± 26% +1900.6% 15524 ± 3% perf-c2c.HITM.local 10.67 ± 34% +187.5% 30.67 ± 14% perf-c2c.HITM.remote 786.67 ± 26% +1877.4% 15555 ± 3% perf-c2c.HITM.total 1418 -4.5% 1354 perf-stat.i.context-switches 107.89 +6.7% 115.10 perf-stat.i.cpu-migrations 1415 -4.3% 1354 perf-stat.ps.context-switches 107.32 +6.6% 114.44 perf-stat.ps.cpu-migrations 407202 ± 5% -26.9% 297604 ± 37% numa-meminfo.node0.Active 407186 ± 5% -26.9% 297590 ± 37% numa-meminfo.node0.Active(anon) 542340 ± 4% +32.1% 716274 ± 15% numa-meminfo.node1.Active 542325 ± 4% +32.1% 716257 ± 15% numa-meminfo.node1.Active(anon) 237478 ± 10% +24.6% 295845 ± 6% numa-meminfo.node1.Shmem 101788 ± 5% -26.9% 74396 ± 37% numa-vmstat.node0.nr_active_anon 101788 ± 5% -26.9% 74396 ± 37% numa-vmstat.node0.nr_zone_active_anon 135542 ± 4% +32.1% 179116 ± 15% numa-vmstat.node1.nr_active_anon 59330 ± 10% +24.7% 74005 ± 6% numa-vmstat.node1.nr_shmem 135542 ± 4% +32.1% 179116 ± 15% numa-vmstat.node1.nr_zone_active_anon 237325 +6.8% 253441 proc-vmstat.nr_active_anon 1087503 +1.5% 1103620 proc-vmstat.nr_file_pages 21835 +2.9% 22478 proc-vmstat.nr_mapped 70301 +22.9% 86421 proc-vmstat.nr_shmem 26779 -4.2% 25654 proc-vmstat.nr_slab_unreclaimable 237325 +6.8% 253441 proc-vmstat.nr_zone_active_anon 29.92 -19.3 10.62 ± 2% perf-profile.calltrace.cycles-pp.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe 26.92 -17.0 9.88 ± 3% perf-profile.calltrace.cycles-pp.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe 24.22 -15.1 9.16 ± 3% perf-profile.calltrace.cycles-pp.sock_read_iter.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe 22.90 -14.1 8.81 ± 3% perf-profile.calltrace.cycles-pp.sock_recvmsg.sock_read_iter.vfs_read.ksys_read.do_syscall_64 21.82 -13.3 8.52 ± 4% perf-profile.calltrace.cycles-pp.unix_stream_recvmsg.sock_recvmsg.sock_read_iter.vfs_read.ksys_read 20.88 -12.6 8.28 ± 4% perf-profile.calltrace.cycles-pp.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg.sock_read_iter.vfs_read 13.80 ± 2% -10.1 3.75 perf-profile.calltrace.cycles-pp.entry_SYSRETQ_unsafe_stack 9.41 ± 3% -7.2 2.17 perf-profile.calltrace.cycles-pp.syscall_return_via_sysret 6.00 -4.4 1.60 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64 4.83 -4.2 0.66 ± 2% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_safe_stack 6.02 -4.1 1.91 perf-profile.calltrace.cycles-pp.unix_stream_read_actor.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg.sock_read_iter 5.60 -3.8 1.80 perf-profile.calltrace.cycles-pp.skb_copy_datagram_iter.unix_stream_read_actor.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg 5.32 -3.6 1.74 ± 2% perf-profile.calltrace.cycles-pp.__skb_datagram_iter.skb_copy_datagram_iter.unix_stream_read_actor.unix_stream_read_generic.unix_stream_recvmsg 4.57 ± 2% -3.5 1.11 ± 2% perf-profile.calltrace.cycles-pp.kmem_cache_alloc_node_noprof.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb.unix_stream_sendmsg 7.71 ± 3% -3.3 4.44 ± 6% perf-profile.calltrace.cycles-pp.consume_skb.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg.sock_read_iter 4.34 -2.8 1.49 ± 2% perf-profile.calltrace.cycles-pp.simple_copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter.unix_stream_read_actor.unix_stream_read_generic 3.65 ± 12% -2.7 0.96 ± 7% perf-profile.calltrace.cycles-pp.kmem_cache_free.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg.sock_read_iter 4.00 -2.6 1.43 ± 2% perf-profile.calltrace.cycles-pp.__check_object_size.simple_copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter.unix_stream_read_actor 3.76 -2.5 1.30 ± 2% perf-profile.calltrace.cycles-pp.skb_copy_datagram_from_iter.unix_stream_sendmsg.sock_write_iter.vfs_write.ksys_write 3.16 -2.4 0.80 perf-profile.calltrace.cycles-pp.skb_release_head_state.consume_skb.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg 2.86 ± 5% -2.1 0.73 ± 3% perf-profile.calltrace.cycles-pp.__memcg_slab_post_alloc_hook.kmem_cache_alloc_node_noprof.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb 2.30 ± 15% -1.9 0.38 ± 71% perf-profile.calltrace.cycles-pp.fdget_pos.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe 2.30 ± 15% -1.8 0.48 ± 46% perf-profile.calltrace.cycles-pp.fdget_pos.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 2.39 ± 18% -1.8 0.60 ± 13% perf-profile.calltrace.cycles-pp.__memcg_slab_free_hook.kmem_cache_free.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg 2.71 -1.7 1.04 ± 3% perf-profile.calltrace.cycles-pp.__check_object_size.skb_copy_datagram_from_iter.unix_stream_sendmsg.sock_write_iter.vfs_write 2.96 ± 9% -1.6 1.40 ± 4% perf-profile.calltrace.cycles-pp.__memcg_slab_free_hook.kfree.skb_release_data.consume_skb.unix_stream_read_generic 2.44 ± 2% -1.4 1.00 ± 3% perf-profile.calltrace.cycles-pp.check_heap_object.__check_object_size.simple_copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter 2.54 ± 4% -1.4 1.17 ± 3% perf-profile.calltrace.cycles-pp.__memcg_slab_post_alloc_hook.__kmalloc_node_track_caller_noprof.kmalloc_reserve.__alloc_skb.alloc_skb_with_frags 4.40 ± 6% -0.8 3.60 ± 7% perf-profile.calltrace.cycles-pp.skb_release_data.consume_skb.unix_stream_read_generic.unix_stream_recvmsg.sock_recvmsg 1.44 ± 2% -0.7 0.72 ± 4% perf-profile.calltrace.cycles-pp.check_heap_object.__check_object_size.skb_copy_datagram_from_iter.unix_stream_sendmsg.sock_write_iter 3.98 ± 6% -0.5 3.48 ± 8% perf-profile.calltrace.cycles-pp.kfree.skb_release_data.consume_skb.unix_stream_read_generic.unix_stream_recvmsg 0.00 +1.3 1.25 ± 18% perf-profile.calltrace.cycles-pp.__slab_free.kfree.skb_release_data.consume_skb.unix_stream_read_generic 64.44 +26.3 90.76 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe 63.43 +27.1 90.50 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe 30.30 +48.7 79.04 perf-profile.calltrace.cycles-pp.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 27.30 +51.0 78.30 perf-profile.calltrace.cycles-pp.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 24.14 +53.3 77.46 perf-profile.calltrace.cycles-pp.sock_write_iter.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 22.11 +54.8 76.96 perf-profile.calltrace.cycles-pp.unix_stream_sendmsg.sock_write_iter.vfs_write.ksys_write.do_syscall_64 13.58 +60.6 74.22 perf-profile.calltrace.cycles-pp.sock_alloc_send_pskb.unix_stream_sendmsg.sock_write_iter.vfs_write.ksys_write 12.32 +61.0 73.32 perf-profile.calltrace.cycles-pp.alloc_skb_with_frags.sock_alloc_send_pskb.unix_stream_sendmsg.sock_write_iter.vfs_write 11.74 +61.4 73.16 perf-profile.calltrace.cycles-pp.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb.unix_stream_sendmsg.sock_write_iter 0.00 +66.0 66.00 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.get_from_partial_node.___slab_alloc.__kmalloc_node_track_caller_noprof 0.00 +66.7 66.71 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.get_from_partial_node.___slab_alloc.__kmalloc_node_track_caller_noprof.kmalloc_reserve 4.52 ± 2% +66.9 71.42 perf-profile.calltrace.cycles-pp.kmalloc_reserve.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb.unix_stream_sendmsg 3.59 ± 3% +67.6 71.18 perf-profile.calltrace.cycles-pp.__kmalloc_node_track_caller_noprof.kmalloc_reserve.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb 0.00 +69.7 69.66 perf-profile.calltrace.cycles-pp.get_from_partial_node.___slab_alloc.__kmalloc_node_track_caller_noprof.kmalloc_reserve.__alloc_skb 0.00 +69.8 69.76 perf-profile.calltrace.cycles-pp.___slab_alloc.__kmalloc_node_track_caller_noprof.kmalloc_reserve.__alloc_skb.alloc_skb_with_frags 29.97 -19.3 10.63 ± 2% perf-profile.children.cycles-pp.ksys_read 26.96 -17.1 9.88 ± 3% perf-profile.children.cycles-pp.vfs_read 24.25 -15.1 9.17 ± 3% perf-profile.children.cycles-pp.sock_read_iter 22.96 -14.1 8.82 ± 3% perf-profile.children.cycles-pp.sock_recvmsg 21.84 -13.3 8.52 ± 4% perf-profile.children.cycles-pp.unix_stream_recvmsg 21.00 -12.7 8.31 ± 4% perf-profile.children.cycles-pp.unix_stream_read_generic 14.88 ± 2% -10.9 4.00 perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack 9.58 ± 3% -7.4 2.22 perf-profile.children.cycles-pp.syscall_return_via_sysret 7.90 -5.9 2.04 perf-profile.children.cycles-pp.entry_SYSCALL_64 6.83 -4.3 2.50 ± 2% perf-profile.children.cycles-pp.__check_object_size 6.05 -4.1 1.92 perf-profile.children.cycles-pp.unix_stream_read_actor 5.64 -3.8 1.80 perf-profile.children.cycles-pp.skb_copy_datagram_iter 5.58 ± 3% -3.7 1.93 ± 2% perf-profile.children.cycles-pp.__memcg_slab_post_alloc_hook 5.36 -3.6 1.74 ± 2% perf-profile.children.cycles-pp.__skb_datagram_iter 4.64 ± 14% -3.5 1.12 ± 9% perf-profile.children.cycles-pp.fdget_pos 4.58 ± 2% -3.5 1.11 ± 2% perf-profile.children.cycles-pp.kmem_cache_alloc_node_noprof 5.45 ± 6% -3.4 2.02 ± 5% perf-profile.children.cycles-pp.__memcg_slab_free_hook 7.74 ± 3% -3.3 4.45 ± 6% perf-profile.children.cycles-pp.consume_skb 4.35 -2.9 1.50 ± 2% perf-profile.children.cycles-pp.simple_copy_to_iter 3.66 ± 12% -2.7 0.97 ± 7% perf-profile.children.cycles-pp.kmem_cache_free 3.40 ± 16% -2.6 0.80 ± 12% perf-profile.children.cycles-pp.__fget_files 3.80 -2.5 1.30 ± 2% perf-profile.children.cycles-pp.skb_copy_datagram_from_iter 3.22 -2.4 0.82 perf-profile.children.cycles-pp.skb_release_head_state 2.95 ± 2% -2.3 0.62 ± 10% perf-profile.children.cycles-pp.__virt_addr_valid 2.93 -2.3 0.66 ± 2% perf-profile.children.cycles-pp.entry_SYSCALL_64_safe_stack 3.97 -2.2 1.74 ± 3% perf-profile.children.cycles-pp.check_heap_object 1.83 -1.4 0.47 ± 2% perf-profile.children.cycles-pp.sock_wfree 1.72 -1.2 0.50 ± 2% perf-profile.children.cycles-pp.__check_heap_object 1.54 -0.9 0.68 perf-profile.children.cycles-pp._raw_spin_lock 1.17 ± 3% -0.8 0.34 ± 2% perf-profile.children.cycles-pp.rw_verify_area 4.43 ± 6% -0.8 3.61 ± 7% perf-profile.children.cycles-pp.skb_release_data 1.12 ± 7% -0.8 0.33 ± 2% perf-profile.children.cycles-pp.testcase 1.05 -0.8 0.27 perf-profile.children.cycles-pp.unix_wfree 0.93 ± 2% -0.7 0.21 ± 3% perf-profile.children.cycles-pp.sock_def_readable 0.91 ± 2% -0.7 0.20 ± 2% perf-profile.children.cycles-pp.__account_obj_stock 0.92 ± 2% -0.7 0.24 ± 3% perf-profile.children.cycles-pp.unix_write_space 0.95 ± 11% -0.7 0.28 ± 10% perf-profile.children.cycles-pp.__refill_obj_stock 0.76 -0.6 0.20 ± 2% perf-profile.children.cycles-pp.fput 0.71 ± 12% -0.5 0.17 ± 2% perf-profile.children.cycles-pp.read 0.71 ± 8% -0.5 0.20 ± 21% perf-profile.children.cycles-pp.__mod_memcg_state 4.00 ± 6% -0.5 3.50 ± 8% perf-profile.children.cycles-pp.kfree 0.65 ± 2% -0.5 0.17 perf-profile.children.cycles-pp.__x86_indirect_thunk_rax 0.65 ± 3% -0.5 0.17 ± 2% perf-profile.children.cycles-pp.kmalloc_size_roundup 0.58 ± 5% -0.4 0.14 ± 3% perf-profile.children.cycles-pp._copy_from_iter 0.61 ± 4% -0.4 0.17 ± 2% perf-profile.children.cycles-pp.x64_sys_call 0.62 ± 4% -0.4 0.20 perf-profile.children.cycles-pp.security_file_permission 0.55 ± 4% -0.4 0.14 ± 3% perf-profile.children.cycles-pp.prandom_u32_state 0.56 ± 3% -0.4 0.15 ± 12% perf-profile.children.cycles-pp._copy_to_iter 0.53 ± 3% -0.4 0.13 ± 2% perf-profile.children.cycles-pp.scm_recv_unix 0.53 -0.4 0.14 ± 2% perf-profile.children.cycles-pp.unix_destruct_scm 0.47 ± 7% -0.3 0.13 ± 16% perf-profile.children.cycles-pp.rep_movs_alternative 0.38 ± 12% -0.3 0.09 ± 24% perf-profile.children.cycles-pp.__css_rstat_updated 0.39 -0.3 0.10 ± 4% perf-profile.children.cycles-pp.mutex_lock 0.37 ± 3% -0.3 0.10 ± 6% perf-profile.children.cycles-pp.check_stack_object 0.30 ± 3% -0.2 0.06 ± 6% perf-profile.children.cycles-pp.__local_bh_enable_ip 0.32 ± 3% -0.2 0.08 ± 4% perf-profile.children.cycles-pp.__scm_recv_common 0.33 ± 2% -0.2 0.09 ± 5% perf-profile.children.cycles-pp.mutex_unlock 0.22 ± 4% -0.2 0.05 perf-profile.children.cycles-pp.security_socket_sendmsg 0.21 ± 5% -0.2 0.05 ± 8% perf-profile.children.cycles-pp.security_socket_recvmsg 0.18 ± 2% -0.2 0.02 ± 99% perf-profile.children.cycles-pp.put_pid 0.21 -0.2 0.06 ± 8% perf-profile.children.cycles-pp._raw_spin_unlock 0.39 ± 4% -0.1 0.26 ± 12% perf-profile.children.cycles-pp.trylock_stock 0.12 ± 12% -0.1 0.06 perf-profile.children.cycles-pp.read@plt 0.34 ± 2% -0.1 0.28 ± 2% perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt 0.37 -0.1 0.32 ± 2% perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt 0.30 ± 2% -0.1 0.24 perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt 0.25 ± 2% -0.1 0.20 ± 2% perf-profile.children.cycles-pp.__hrtimer_run_queues 0.21 -0.0 0.16 ± 3% perf-profile.children.cycles-pp.update_process_times 0.29 -0.0 0.24 perf-profile.children.cycles-pp.hrtimer_interrupt 0.23 ± 2% -0.0 0.18 ± 3% perf-profile.children.cycles-pp.tick_nohz_handler 0.13 ± 3% -0.0 0.11 ± 4% perf-profile.children.cycles-pp.sched_tick 0.11 ± 3% +0.0 0.13 ± 4% perf-profile.children.cycles-pp.write 0.00 +0.1 0.05 ± 8% perf-profile.children.cycles-pp.__pcs_replace_empty_main 0.00 +0.2 0.25 perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore 0.00 +1.3 1.25 ± 18% perf-profile.children.cycles-pp.__slab_free 64.66 +26.2 90.85 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 63.63 +27.0 90.60 perf-profile.children.cycles-pp.do_syscall_64 30.38 +48.7 79.10 perf-profile.children.cycles-pp.ksys_write 27.36 +51.0 78.34 perf-profile.children.cycles-pp.vfs_write 24.20 +53.3 77.48 perf-profile.children.cycles-pp.sock_write_iter 22.27 +54.7 76.99 perf-profile.children.cycles-pp.unix_stream_sendmsg 13.61 +60.6 74.23 perf-profile.children.cycles-pp.sock_alloc_send_pskb 12.34 +61.0 73.32 perf-profile.children.cycles-pp.alloc_skb_with_frags 11.85 +61.3 73.18 perf-profile.children.cycles-pp.__alloc_skb 0.00 +66.2 66.18 perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath 4.57 ± 2% +66.9 71.44 perf-profile.children.cycles-pp.kmalloc_reserve 0.00 +66.9 66.90 perf-profile.children.cycles-pp._raw_spin_lock_irqsave 3.62 ± 3% +67.6 71.19 perf-profile.children.cycles-pp.__kmalloc_node_track_caller_noprof 0.00 +69.7 69.66 perf-profile.children.cycles-pp.get_from_partial_node 0.00 +69.8 69.76 perf-profile.children.cycles-pp.___slab_alloc 14.71 ± 2% -10.7 3.96 perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack 9.46 ± 3% -7.3 2.20 perf-profile.self.cycles-pp.syscall_return_via_sysret 7.90 -5.9 2.04 perf-profile.self.cycles-pp.entry_SYSCALL_64 4.50 ± 3% -3.0 1.49 ± 3% perf-profile.self.cycles-pp.__memcg_slab_post_alloc_hook 3.38 ± 16% -2.6 0.80 ± 12% perf-profile.self.cycles-pp.__fget_files 3.94 ± 7% -2.3 1.61 ± 6% perf-profile.self.cycles-pp.__memcg_slab_free_hook 2.89 ± 2% -2.3 0.61 ± 10% perf-profile.self.cycles-pp.__virt_addr_valid 2.56 ± 3% -1.9 0.65 ± 6% perf-profile.self.cycles-pp.vfs_write 2.48 ± 4% -1.9 0.59 ± 3% perf-profile.self.cycles-pp.__alloc_skb 2.35 -1.8 0.59 perf-profile.self.cycles-pp.unix_stream_sendmsg 2.11 ± 2% -1.6 0.55 ± 4% perf-profile.self.cycles-pp.vfs_read 1.74 ± 3% -1.3 0.45 ± 2% perf-profile.self.cycles-pp.do_syscall_64 1.72 -1.3 0.44 perf-profile.self.cycles-pp.sock_write_iter 1.70 -1.2 0.50 ± 3% perf-profile.self.cycles-pp.__check_heap_object 1.54 ± 5% -1.2 0.36 ± 4% perf-profile.self.cycles-pp.kmem_cache_alloc_node_noprof 1.50 -1.1 0.43 ± 2% perf-profile.self.cycles-pp.unix_stream_read_generic 1.30 -1.0 0.34 ± 2% perf-profile.self.cycles-pp.sock_read_iter 1.22 ± 21% -0.9 0.31 ± 20% perf-profile.self.cycles-pp.fdget_pos 1.22 ± 4% -0.9 0.35 ± 6% perf-profile.self.cycles-pp.kmem_cache_free 1.05 ± 2% -0.8 0.20 ± 2% perf-profile.self.cycles-pp.__kmalloc_node_track_caller_noprof 1.07 -0.8 0.26 perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe 1.47 -0.8 0.66 perf-profile.self.cycles-pp._raw_spin_lock 1.02 ± 2% -0.8 0.22 ± 3% perf-profile.self.cycles-pp.entry_SYSCALL_64_safe_stack 0.88 ± 4% -0.7 0.18 ± 2% perf-profile.self.cycles-pp.__check_object_size 0.88 ± 2% -0.7 0.20 ± 3% perf-profile.self.cycles-pp.sock_def_readable 0.90 -0.7 0.22 ± 4% perf-profile.self.cycles-pp.sock_wfree 0.95 ± 5% -0.7 0.29 ± 2% perf-profile.self.cycles-pp.testcase 0.90 ± 4% -0.7 0.24 ± 3% perf-profile.self.cycles-pp.sock_recvmsg 0.87 ± 2% -0.6 0.23 ± 2% perf-profile.self.cycles-pp.unix_write_space 0.83 ± 3% -0.6 0.19 ± 2% perf-profile.self.cycles-pp.__account_obj_stock 0.84 ± 3% -0.6 0.22 ± 3% perf-profile.self.cycles-pp.unix_stream_recvmsg 0.72 -0.5 0.19 ± 2% perf-profile.self.cycles-pp.fput 0.61 ± 14% -0.5 0.12 ± 3% perf-profile.self.cycles-pp.read 0.60 ± 2% -0.4 0.16 ± 3% perf-profile.self.cycles-pp.kmalloc_size_roundup 0.54 ± 4% -0.4 0.14 ± 3% perf-profile.self.cycles-pp.rw_verify_area 0.59 ± 4% -0.4 0.19 ± 3% perf-profile.self.cycles-pp.security_file_permission 0.52 ± 4% -0.4 0.12 ± 4% perf-profile.self.cycles-pp.prandom_u32_state 0.54 ± 4% -0.4 0.15 ± 3% perf-profile.self.cycles-pp.x64_sys_call 0.50 -0.4 0.14 ± 3% perf-profile.self.cycles-pp.__x86_indirect_thunk_rax 0.48 ± 10% -0.4 0.13 ± 10% perf-profile.self.cycles-pp.__refill_obj_stock 0.45 -0.4 0.10 ± 4% perf-profile.self.cycles-pp.__skb_datagram_iter 0.46 ± 2% -0.3 0.11 perf-profile.self.cycles-pp.skb_copy_datagram_from_iter 0.48 ± 2% -0.3 0.14 ± 3% perf-profile.self.cycles-pp.alloc_skb_with_frags 0.46 -0.3 0.12 perf-profile.self.cycles-pp.unix_destruct_scm 0.43 -0.3 0.11 perf-profile.self.cycles-pp.unix_wfree 0.44 ± 7% -0.3 0.12 ± 16% perf-profile.self.cycles-pp.rep_movs_alternative 0.38 ± 5% -0.3 0.09 ± 4% perf-profile.self.cycles-pp._copy_from_iter 0.38 ± 2% -0.3 0.10 ± 7% perf-profile.self.cycles-pp.unix_stream_read_actor 0.39 ± 2% -0.3 0.11 ± 4% perf-profile.self.cycles-pp.ksys_write 0.37 ± 13% -0.3 0.09 ± 21% perf-profile.self.cycles-pp.__css_rstat_updated 0.38 -0.3 0.10 ± 4% perf-profile.self.cycles-pp.mutex_lock 0.34 ± 4% -0.3 0.07 perf-profile.self.cycles-pp.skb_release_head_state 0.36 ± 2% -0.3 0.10 perf-profile.self.cycles-pp.ksys_read 0.42 ± 2% -0.3 0.17 ± 6% perf-profile.self.cycles-pp.sock_alloc_send_pskb 0.29 ± 2% -0.2 0.05 ± 8% perf-profile.self.cycles-pp.__local_bh_enable_ip 0.28 ± 2% -0.2 0.05 perf-profile.self.cycles-pp.simple_copy_to_iter 0.32 ± 5% -0.2 0.08 ± 5% perf-profile.self.cycles-pp.check_stack_object 0.30 ± 3% -0.2 0.07 ± 6% perf-profile.self.cycles-pp.kmalloc_reserve 0.32 ± 4% -0.2 0.09 ± 7% perf-profile.self.cycles-pp.mutex_unlock 0.30 ± 3% -0.2 0.08 ± 4% perf-profile.self.cycles-pp._copy_to_iter 0.28 ± 2% -0.2 0.06 ± 6% perf-profile.self.cycles-pp.skb_copy_datagram_iter 0.30 ± 3% -0.2 0.09 perf-profile.self.cycles-pp.skb_release_data 0.27 ± 4% -0.2 0.07 ± 8% perf-profile.self.cycles-pp.__scm_recv_common 0.32 ± 11% -0.2 0.12 ± 25% perf-profile.self.cycles-pp.__mod_memcg_state 0.98 ± 5% -0.2 0.78 ± 4% perf-profile.self.cycles-pp.kfree 0.21 ± 8% -0.2 0.05 perf-profile.self.cycles-pp.scm_recv_unix 0.19 ± 5% -0.1 0.04 ± 44% perf-profile.self.cycles-pp.security_socket_recvmsg 0.18 ± 2% -0.1 0.03 ± 70% perf-profile.self.cycles-pp._raw_spin_unlock 0.16 ± 3% -0.1 0.02 ± 99% perf-profile.self.cycles-pp.consume_skb 0.10 ± 10% -0.0 0.05 ± 8% perf-profile.self.cycles-pp.read@plt 0.07 +0.0 0.11 ± 4% perf-profile.self.cycles-pp.write 0.00 +0.1 0.05 perf-profile.self.cycles-pp._raw_spin_unlock_irqrestore 0.00 +0.1 0.05 ± 8% perf-profile.self.cycles-pp.__pcs_replace_empty_main 0.00 +0.1 0.10 ± 4% perf-profile.self.cycles-pp.___slab_alloc 0.84 ± 2% +0.2 1.08 ± 8% perf-profile.self.cycles-pp.check_heap_object 0.00 +0.7 0.74 ± 2% perf-profile.self.cycles-pp._raw_spin_lock_irqsave 0.00 +1.1 1.08 ± 3% perf-profile.self.cycles-pp.__slab_free 0.00 +2.7 2.70 perf-profile.self.cycles-pp.get_from_partial_node 0.00 +66.2 66.16 perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath 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