Hello, kernel test robot noticed a 2.8% improvement of netperf.Throughput_Mbps on: commit: c89fa56a8776f98d8e4ed9310f5b178288005916 ("[PATCH net-next v5 3/3] sock: Fix misuse of sk_under_memory_pressure()") url: https://github.com/intel-lab-lkp/linux/commits/Abel-Wu/net-memcg-Fold-dependency-into-memcg-pressure-cond/20230602-161424 base: https://git.kernel.org/cgit/linux/kernel/git/davem/net-next.git a395b8d1c7c3a074bfa83b9759a4a11901a295c5 patch link: https://lore.kernel.org/all/20230602081135.75424-4-wuyun.abel@bytedance.com/ patch subject: [PATCH net-next v5 3/3] sock: Fix misuse of sk_under_memory_pressure() testcase: netperf test machine: 128 threads 4 sockets Intel(R) Xeon(R) Gold 6338 CPU @ 2.00GHz (Ice Lake) with 256G memory parameters: ip: ipv4 runtime: 300s nr_threads: 50% cluster: cs-localhost test: TCP_STREAM cpufreq_governor: performance Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests sudo bin/lkp install job.yaml # job file is attached in this email bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run sudo bin/lkp run generated-yaml-file # if come across any failure that blocks the test, # please remove ~/.lkp and /lkp dir to run from a clean state. ========================================================================================= cluster/compiler/cpufreq_governor/ip/kconfig/nr_threads/rootfs/runtime/tbox_group/test/testcase: cs-localhost/gcc-12/performance/ipv4/x86_64-rhel-8.3/50%/debian-11.1-x86_64-20220510.cgz/300s/lkp-icl-2sp2/TCP_STREAM/netperf commit: 5ec3359188 ("sock: Always take memcg pressure into consideration") c89fa56a87 ("sock: Fix misuse of sk_under_memory_pressure()") 5ec335918819adbd c89fa56a8776f98d8e4ed9310f5 ---------------- --------------------------- %stddev %change %stddev \ | \ 15.76 -0.4 15.31 turbostat.C1% 34.82 +1.4% 35.31 turbostat.RAMWatt 5050526 +1.3% 5115222 vmstat.system.cs 2620207 +1.1% 2648074 vmstat.system.in 1.676e+09 +2.8% 1.723e+09 proc-vmstat.numa_hit 1.676e+09 +2.8% 1.722e+09 proc-vmstat.numa_local 1.338e+10 +2.8% 1.375e+10 proc-vmstat.pgalloc_normal 1.338e+10 +2.8% 1.375e+10 proc-vmstat.pgfree 0.00 ± 22% -25.8% 0.00 ± 5% sched_debug.cpu.next_balance.stddev 0.00 ± 24% -29.2% 0.00 ± 46% sched_debug.rt_rq:.rt_time.avg 0.02 ± 24% -29.2% 0.01 ± 46% sched_debug.rt_rq:.rt_time.max 0.00 ± 24% -29.2% 0.00 ± 46% sched_debug.rt_rq:.rt_time.stddev 22841 +2.8% 23483 netperf.Throughput_Mbps 1461840 +2.8% 1502930 netperf.Throughput_total_Mbps 425.78 +3.6% 441.16 netperf.time.user_time 101776 ± 6% +19.6% 121747 ± 7% netperf.time.voluntary_context_switches 3.346e+09 +2.8% 3.44e+09 netperf.workload 2.182e+10 +2.5% 2.236e+10 perf-stat.i.branch-instructions 0.88 -0.0 0.87 perf-stat.i.branch-miss-rate% 2.55 -0.1 2.46 ± 2% perf-stat.i.cache-miss-rate% 6.286e+09 +2.2% 6.425e+09 perf-stat.i.cache-references 5099243 +1.3% 5164362 perf-stat.i.context-switches 2.59 -2.8% 2.52 perf-stat.i.cpi 12909 ± 3% -8.8% 11772 ± 3% perf-stat.i.cpu-migrations 3.253e+10 +2.6% 3.337e+10 perf-stat.i.dTLB-loads 1.888e+10 +2.7% 1.939e+10 perf-stat.i.dTLB-stores 1.142e+11 +2.6% 1.172e+11 perf-stat.i.instructions 0.39 +2.8% 0.40 perf-stat.i.ipc 621.17 +2.6% 637.06 perf-stat.i.metric.M/sec 50.27 ± 4% +6.5 56.79 ± 3% perf-stat.i.node-store-miss-rate% 26917446 ± 3% +7.6% 28967728 ± 2% perf-stat.i.node-store-misses 27529051 ± 6% -17.5% 22707159 ± 6% perf-stat.i.node-stores 0.87 -0.0 0.86 perf-stat.overall.branch-miss-rate% 2.52 -0.1 2.43 ± 2% perf-stat.overall.cache-miss-rate% 2.59 -2.8% 2.52 perf-stat.overall.cpi 0.39 +2.9% 0.40 perf-stat.overall.ipc 49.47 ± 4% +6.6 56.09 ± 3% perf-stat.overall.node-store-miss-rate% 2.174e+10 +2.5% 2.228e+10 perf-stat.ps.branch-instructions 6.267e+09 +2.2% 6.405e+09 perf-stat.ps.cache-references 5081226 +1.3% 5146095 perf-stat.ps.context-switches 12877 ± 3% -8.8% 11745 ± 3% perf-stat.ps.cpu-migrations 3.241e+10 +2.6% 3.325e+10 perf-stat.ps.dTLB-loads 1.881e+10 +2.7% 1.932e+10 perf-stat.ps.dTLB-stores 1.138e+11 +2.6% 1.168e+11 perf-stat.ps.instructions 26872617 ± 3% +7.6% 28926338 ± 2% perf-stat.ps.node-store-misses 27479983 ± 6% -17.5% 22669639 ± 6% perf-stat.ps.node-stores 3.431e+13 +2.6% 3.52e+13 perf-stat.total.instructions 86.42 -14.7 71.74 ± 20% perf-profile.calltrace.cycles-pp.main.__libc_start_main 86.46 -14.7 71.79 ± 20% perf-profile.calltrace.cycles-pp.__libc_start_main 51.74 -0.9 50.86 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__send.send_omni_inner.send_tcp_stream.main 1.08 ± 30% -0.6 0.44 ± 44% perf-profile.calltrace.cycles-pp.page_counter_try_charge.try_charge_memcg.mem_cgroup_charge_skmem.tcp_data_queue.tcp_rcv_established 51.54 -0.6 50.95 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__send.send_omni_inner.send_tcp_stream 2.00 -0.5 1.46 ± 8% perf-profile.calltrace.cycles-pp.__sk_mem_reduce_allocated.tcp_recvmsg_locked.tcp_recvmsg.inet_recvmsg.sock_recvmsg 49.60 -0.5 49.06 perf-profile.calltrace.cycles-pp.tcp_sendmsg.sock_sendmsg.__sys_sendto.__x64_sys_sendto.do_syscall_64 50.04 -0.5 49.56 perf-profile.calltrace.cycles-pp.sock_sendmsg.__sys_sendto.__x64_sys_sendto.do_syscall_64.entry_SYSCALL_64_after_hwframe 51.20 -0.5 50.74 perf-profile.calltrace.cycles-pp.__x64_sys_sendto.do_syscall_64.entry_SYSCALL_64_after_hwframe.__send.send_omni_inner 51.10 -0.5 50.64 perf-profile.calltrace.cycles-pp.__sys_sendto.__x64_sys_sendto.do_syscall_64.entry_SYSCALL_64_after_hwframe.__send 13.57 -0.4 13.20 perf-profile.calltrace.cycles-pp.release_sock.tcp_sendmsg.sock_sendmsg.__sys_sendto.__x64_sys_sendto 13.07 -0.3 12.72 perf-profile.calltrace.cycles-pp.__release_sock.release_sock.tcp_sendmsg.sock_sendmsg.__sys_sendto 2.48 ± 2% -0.3 2.17 ± 2% perf-profile.calltrace.cycles-pp.mem_cgroup_charge_skmem.__sk_mem_raise_allocated.__sk_mem_schedule.tcp_wmem_schedule.tcp_sendmsg_locked 1.36 -0.3 1.05 ± 2% perf-profile.calltrace.cycles-pp.__sk_mem_reduce_allocated.tcp_clean_rtx_queue.tcp_ack.tcp_rcv_established.tcp_v4_do_rcv 3.23 -0.3 2.96 perf-profile.calltrace.cycles-pp.__sk_mem_raise_allocated.__sk_mem_schedule.tcp_wmem_schedule.tcp_sendmsg_locked.tcp_sendmsg 3.28 -0.3 3.00 perf-profile.calltrace.cycles-pp.__sk_mem_schedule.tcp_wmem_schedule.tcp_sendmsg_locked.tcp_sendmsg.sock_sendmsg 3.33 -0.3 3.06 perf-profile.calltrace.cycles-pp.tcp_wmem_schedule.tcp_sendmsg_locked.tcp_sendmsg.sock_sendmsg.__sys_sendto 6.08 -0.3 5.82 perf-profile.calltrace.cycles-pp.tcp_rcv_established.tcp_v4_do_rcv.tcp_v4_rcv.ip_protocol_deliver_rcu.ip_local_deliver_finish 6.21 -0.3 5.96 perf-profile.calltrace.cycles-pp.tcp_v4_do_rcv.tcp_v4_rcv.ip_protocol_deliver_rcu.ip_local_deliver_finish.__netif_receive_skb_one_core 3.32 -0.2 3.07 perf-profile.calltrace.cycles-pp.tcp_clean_rtx_queue.tcp_ack.tcp_rcv_established.tcp_v4_do_rcv.__release_sock 1.40 ± 3% -0.2 1.17 ± 7% perf-profile.calltrace.cycles-pp.refill_stock.__sk_mem_reduce_allocated.tcp_recvmsg_locked.tcp_recvmsg.inet_recvmsg 2.90 ± 3% -0.2 2.67 ± 2% perf-profile.calltrace.cycles-pp.try_charge_memcg.mem_cgroup_charge_skmem.tcp_data_queue.tcp_rcv_established.tcp_v4_do_rcv 1.26 ± 3% -0.2 1.03 ± 7% perf-profile.calltrace.cycles-pp.page_counter_uncharge.drain_stock.refill_stock.__sk_mem_reduce_allocated.tcp_recvmsg_locked 3.69 -0.2 3.46 perf-profile.calltrace.cycles-pp.tcp_ack.tcp_rcv_established.tcp_v4_do_rcv.__release_sock.release_sock 1.27 ± 3% -0.2 1.05 ± 7% perf-profile.calltrace.cycles-pp.drain_stock.refill_stock.__sk_mem_reduce_allocated.tcp_recvmsg_locked.tcp_recvmsg 4.66 -0.2 4.46 perf-profile.calltrace.cycles-pp.tcp_data_queue.tcp_rcv_established.tcp_v4_do_rcv.tcp_v4_rcv.ip_protocol_deliver_rcu 2.15 ± 3% -0.2 1.98 ± 2% perf-profile.calltrace.cycles-pp.mem_cgroup_charge_skmem.tcp_data_queue.tcp_rcv_established.tcp_v4_do_rcv.tcp_v4_rcv 0.64 ± 2% -0.2 0.47 ± 45% perf-profile.calltrace.cycles-pp.tcp_rcv_established.tcp_v4_do_rcv.__release_sock.release_sock.tcp_recvmsg 1.52 -0.2 1.37 ± 7% perf-profile.calltrace.cycles-pp.__sk_flush_backlog.tcp_recvmsg_locked.tcp_recvmsg.inet_recvmsg.sock_recvmsg 1.70 ± 3% -0.1 1.55 ± 2% perf-profile.calltrace.cycles-pp.try_charge_memcg.mem_cgroup_charge_skmem.__sk_mem_raise_allocated.__sk_mem_schedule.tcp_wmem_schedule 1.42 -0.1 1.27 ± 7% perf-profile.calltrace.cycles-pp.tcp_v4_do_rcv.__release_sock.__sk_flush_backlog.tcp_recvmsg_locked.tcp_recvmsg 1.48 -0.1 1.33 ± 7% perf-profile.calltrace.cycles-pp.__release_sock.__sk_flush_backlog.tcp_recvmsg_locked.tcp_recvmsg.inet_recvmsg 1.29 -0.1 1.16 ± 7% perf-profile.calltrace.cycles-pp.tcp_rcv_established.tcp_v4_do_rcv.__release_sock.__sk_flush_backlog.tcp_recvmsg_locked 1.08 -0.1 0.96 ± 7% perf-profile.calltrace.cycles-pp.tcp_data_queue.tcp_rcv_established.tcp_v4_do_rcv.__release_sock.__sk_flush_backlog 0.96 ± 2% -0.1 0.85 ± 7% perf-profile.calltrace.cycles-pp.mem_cgroup_charge_skmem.tcp_data_queue.tcp_rcv_established.tcp_v4_do_rcv.__release_sock 1.01 ± 3% -0.1 0.90 ± 2% perf-profile.calltrace.cycles-pp.refill_stock.__sk_mem_reduce_allocated.tcp_clean_rtx_queue.tcp_ack.tcp_rcv_established 0.89 -0.1 0.78 ± 7% perf-profile.calltrace.cycles-pp.release_sock.tcp_recvmsg.inet_recvmsg.sock_recvmsg.__sys_recvfrom 0.92 ± 3% -0.1 0.82 ± 2% perf-profile.calltrace.cycles-pp.page_counter_uncharge.drain_stock.refill_stock.__sk_mem_reduce_allocated.tcp_clean_rtx_queue 0.93 ± 3% -0.1 0.83 ± 2% perf-profile.calltrace.cycles-pp.drain_stock.refill_stock.__sk_mem_reduce_allocated.tcp_clean_rtx_queue.tcp_ack 0.75 -0.1 0.65 ± 7% perf-profile.calltrace.cycles-pp.__release_sock.release_sock.tcp_recvmsg.inet_recvmsg.sock_recvmsg 0.71 -0.1 0.62 ± 7% perf-profile.calltrace.cycles-pp.tcp_v4_do_rcv.__release_sock.release_sock.tcp_recvmsg.inet_recvmsg 0.85 ± 4% -0.1 0.76 ± 2% perf-profile.calltrace.cycles-pp.page_counter_try_charge.try_charge_memcg.mem_cgroup_charge_skmem.__sk_mem_raise_allocated.__sk_mem_schedule 0.96 -0.0 0.92 perf-profile.calltrace.cycles-pp.skb_release_data.napi_consume_skb.net_rx_action.__do_softirq.do_softirq 1.04 -0.0 1.00 perf-profile.calltrace.cycles-pp.napi_consume_skb.net_rx_action.__do_softirq.do_softirq.__local_bh_enable_ip 0.54 +0.0 0.56 perf-profile.calltrace.cycles-pp.__alloc_skb.tcp_stream_alloc_skb.tcp_sendmsg_locked.tcp_sendmsg.sock_sendmsg 1.04 +0.0 1.08 ± 2% perf-profile.calltrace.cycles-pp.__schedule.schedule_idle.do_idle.cpu_startup_entry.start_secondary 1.10 +0.0 1.15 ± 2% perf-profile.calltrace.cycles-pp.schedule_idle.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify 2.68 +0.1 2.73 perf-profile.calltrace.cycles-pp.sysvec_call_function_single.asm_sysvec_call_function_single.acpi_safe_halt.acpi_idle_enter.cpuidle_enter_state 1.14 +0.1 1.20 perf-profile.calltrace.cycles-pp.skb_release_data.__kfree_skb.tcp_clean_rtx_queue.tcp_ack.tcp_rcv_established 1.16 +0.1 1.22 perf-profile.calltrace.cycles-pp.__kfree_skb.tcp_clean_rtx_queue.tcp_ack.tcp_rcv_established.tcp_v4_do_rcv 31.36 +0.2 31.59 perf-profile.calltrace.cycles-pp.sock_recvmsg.__sys_recvfrom.__x64_sys_recvfrom.do_syscall_64.entry_SYSCALL_64_after_hwframe 31.75 +0.2 31.99 perf-profile.calltrace.cycles-pp.__sys_recvfrom.__x64_sys_recvfrom.do_syscall_64.entry_SYSCALL_64_after_hwframe.recv 31.13 +0.2 31.37 perf-profile.calltrace.cycles-pp.tcp_recvmsg.inet_recvmsg.sock_recvmsg.__sys_recvfrom.__x64_sys_recvfrom 31.20 +0.2 31.45 perf-profile.calltrace.cycles-pp.inet_recvmsg.sock_recvmsg.__sys_recvfrom.__x64_sys_recvfrom.do_syscall_64 31.80 +0.2 32.05 perf-profile.calltrace.cycles-pp.__x64_sys_recvfrom.do_syscall_64.entry_SYSCALL_64_after_hwframe.recv.recv_omni 29.91 +0.3 30.16 perf-profile.calltrace.cycles-pp.tcp_recvmsg_locked.tcp_recvmsg.inet_recvmsg.sock_recvmsg.__sys_recvfrom 32.02 +0.3 32.28 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.recv.recv_omni.process_requests 32.11 +0.3 32.37 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.recv.recv_omni.process_requests.spawn_child 32.72 +0.3 32.99 perf-profile.calltrace.cycles-pp.recv.recv_omni.process_requests.spawn_child.accept_connection 33.18 +0.3 33.45 perf-profile.calltrace.cycles-pp.recv_omni.process_requests.spawn_child.accept_connection.accept_connections 15.32 +0.4 15.71 perf-profile.calltrace.cycles-pp.copyout._copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter.tcp_recvmsg_locked 15.54 +0.4 15.92 perf-profile.calltrace.cycles-pp._copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter.tcp_recvmsg_locked.tcp_recvmsg 17.05 +0.4 17.47 perf-profile.calltrace.cycles-pp.skb_copy_datagram_iter.tcp_recvmsg_locked.tcp_recvmsg.inet_recvmsg.sock_recvmsg 17.02 +0.4 17.44 perf-profile.calltrace.cycles-pp.__skb_datagram_iter.skb_copy_datagram_iter.tcp_recvmsg_locked.tcp_recvmsg.inet_recvmsg 86.46 -14.7 71.79 ± 20% perf-profile.children.cycles-pp.__libc_start_main 86.58 -14.7 71.92 ± 20% perf-profile.children.cycles-pp.main 3.52 -0.7 2.78 perf-profile.children.cycles-pp.__sk_mem_reduce_allocated 6.21 ± 2% -0.5 5.67 perf-profile.children.cycles-pp.mem_cgroup_charge_skmem 49.64 -0.5 49.10 perf-profile.children.cycles-pp.tcp_sendmsg 50.06 -0.5 49.58 perf-profile.children.cycles-pp.sock_sendmsg 51.22 -0.5 50.76 perf-profile.children.cycles-pp.__x64_sys_sendto 51.13 -0.5 50.67 perf-profile.children.cycles-pp.__sys_sendto 5.14 ± 3% -0.3 4.82 ± 2% perf-profile.children.cycles-pp.try_charge_memcg 18.19 -0.3 17.87 perf-profile.children.cycles-pp.tcp_rcv_established 18.52 -0.3 18.20 perf-profile.children.cycles-pp.tcp_v4_do_rcv 15.38 -0.3 15.08 perf-profile.children.cycles-pp.__release_sock 14.62 -0.3 14.34 perf-profile.children.cycles-pp.release_sock 19.19 -0.3 18.92 perf-profile.children.cycles-pp._copy_from_iter 18.90 -0.3 18.62 perf-profile.children.cycles-pp.copyin 3.45 -0.3 3.18 perf-profile.children.cycles-pp.__sk_mem_raise_allocated 3.50 -0.3 3.23 perf-profile.children.cycles-pp.__sk_mem_schedule 6.37 -0.2 6.12 perf-profile.children.cycles-pp.tcp_data_queue 19.75 -0.2 19.51 perf-profile.children.cycles-pp.skb_do_copy_data_nocache 2.58 ± 3% -0.2 2.34 ± 2% perf-profile.children.cycles-pp.refill_stock 2.30 ± 3% -0.2 2.06 ± 2% perf-profile.children.cycles-pp.page_counter_uncharge 2.32 ± 3% -0.2 2.08 ± 2% perf-profile.children.cycles-pp.drain_stock 3.35 -0.2 3.11 perf-profile.children.cycles-pp.tcp_wmem_schedule 3.65 -0.2 3.41 perf-profile.children.cycles-pp.tcp_clean_rtx_queue 2.70 ± 3% -0.2 2.49 perf-profile.children.cycles-pp.page_counter_try_charge 4.38 -0.2 4.17 perf-profile.children.cycles-pp.tcp_ack 0.47 ± 3% -0.1 0.37 ± 3% perf-profile.children.cycles-pp.mem_cgroup_uncharge_skmem 0.52 ± 2% -0.0 0.50 perf-profile.children.cycles-pp._raw_spin_trylock 0.39 -0.0 0.37 perf-profile.children.cycles-pp.select_task_rq_fair 0.10 ± 3% -0.0 0.09 ± 4% perf-profile.children.cycles-pp.security_socket_recvmsg 0.06 +0.0 0.07 perf-profile.children.cycles-pp._raw_spin_unlock_bh 0.18 ± 2% +0.0 0.20 ± 2% perf-profile.children.cycles-pp.ip_send_check 0.06 ± 6% +0.0 0.08 ± 6% perf-profile.children.cycles-pp.rb_next 0.17 ± 2% +0.0 0.19 ± 2% perf-profile.children.cycles-pp.tick_irq_enter 0.52 +0.0 0.54 perf-profile.children.cycles-pp.__fget_light 0.27 +0.0 0.29 perf-profile.children.cycles-pp.tcp_tso_segs 1.08 +0.0 1.10 perf-profile.children.cycles-pp.skb_page_frag_refill 0.65 +0.0 0.67 perf-profile.children.cycles-pp.tcp_stream_alloc_skb 1.11 +0.0 1.14 perf-profile.children.cycles-pp.sk_page_frag_refill 0.41 +0.0 0.43 ± 2% perf-profile.children.cycles-pp.native_sched_clock 0.64 +0.0 0.67 perf-profile.children.cycles-pp.sockfd_lookup_light 0.56 +0.0 0.58 perf-profile.children.cycles-pp.kmem_cache_alloc_node 0.47 +0.0 0.49 perf-profile.children.cycles-pp.tcp_schedule_loss_probe 0.45 +0.0 0.48 perf-profile.children.cycles-pp.sched_clock_cpu 0.29 ± 2% +0.0 0.32 perf-profile.children.cycles-pp.aa_sk_perm 0.76 +0.0 0.79 perf-profile.children.cycles-pp.ktime_get 0.72 +0.0 0.75 perf-profile.children.cycles-pp.dequeue_entity 0.22 ± 3% +0.0 0.25 ± 3% perf-profile.children.cycles-pp.set_next_entity 1.03 +0.0 1.06 perf-profile.children.cycles-pp.simple_copy_to_iter 0.86 +0.0 0.89 perf-profile.children.cycles-pp.__alloc_skb 0.48 +0.0 0.51 perf-profile.children.cycles-pp.irqtime_account_irq 0.81 +0.0 0.85 perf-profile.children.cycles-pp.dequeue_task_fair 0.53 ± 2% +0.0 0.57 ± 2% perf-profile.children.cycles-pp.tcp_event_new_data_sent 0.62 +0.0 0.66 perf-profile.children.cycles-pp.__mod_timer 0.66 +0.0 0.70 perf-profile.children.cycles-pp.sk_reset_timer 1.19 +0.0 1.23 perf-profile.children.cycles-pp.check_heap_object 0.33 ± 2% +0.0 0.37 ± 4% perf-profile.children.cycles-pp.propagate_protected_usage 1.47 +0.0 1.51 perf-profile.children.cycles-pp.__check_object_size 1.11 +0.0 1.16 ± 2% perf-profile.children.cycles-pp.schedule_idle 0.27 ± 3% +0.0 0.32 perf-profile.children.cycles-pp.security_socket_sendmsg 0.00 +0.1 0.05 perf-profile.children.cycles-pp.pick_next_entity 0.00 +0.1 0.05 perf-profile.children.cycles-pp.detach_if_pending 0.00 +0.1 0.05 perf-profile.children.cycles-pp.rb_erase 0.00 +0.1 0.05 perf-profile.children.cycles-pp.get_nohz_timer_target 2.72 +0.1 2.78 perf-profile.children.cycles-pp.sysvec_call_function_single 2.80 +0.1 2.85 perf-profile.children.cycles-pp.skb_release_data 0.23 ± 2% +0.1 0.29 perf-profile.children.cycles-pp.skb_attempt_defer_free 1.54 +0.1 1.62 perf-profile.children.cycles-pp.__kfree_skb 16.08 +0.1 16.20 perf-profile.children.cycles-pp.tcp_write_xmit 18.25 +0.1 18.39 perf-profile.children.cycles-pp.__tcp_transmit_skb 31.37 +0.2 31.60 perf-profile.children.cycles-pp.sock_recvmsg 31.16 +0.2 31.39 perf-profile.children.cycles-pp.tcp_recvmsg 31.82 +0.2 32.06 perf-profile.children.cycles-pp.__x64_sys_recvfrom 31.76 +0.2 32.00 perf-profile.children.cycles-pp.__sys_recvfrom 31.21 +0.2 31.45 perf-profile.children.cycles-pp.inet_recvmsg 29.93 +0.3 30.19 perf-profile.children.cycles-pp.tcp_recvmsg_locked 32.82 +0.3 33.08 perf-profile.children.cycles-pp.recv 33.18 +0.3 33.46 perf-profile.children.cycles-pp.recv_omni 33.18 +0.3 33.46 perf-profile.children.cycles-pp.accept_connections 33.18 +0.3 33.46 perf-profile.children.cycles-pp.accept_connection 33.18 +0.3 33.46 perf-profile.children.cycles-pp.spawn_child 33.18 +0.3 33.46 perf-profile.children.cycles-pp.process_requests 15.42 +0.4 15.80 perf-profile.children.cycles-pp.copyout 15.54 +0.4 15.93 perf-profile.children.cycles-pp._copy_to_iter 17.03 +0.4 17.45 perf-profile.children.cycles-pp.__skb_datagram_iter 17.05 +0.4 17.48 perf-profile.children.cycles-pp.skb_copy_datagram_iter 0.50 ± 3% -0.4 0.11 ± 4% perf-profile.self.cycles-pp.__sk_mem_reduce_allocated 18.79 -0.3 18.52 perf-profile.self.cycles-pp.copyin 2.12 ± 3% -0.3 1.85 ± 2% perf-profile.self.cycles-pp.page_counter_uncharge 2.54 ± 3% -0.2 2.30 perf-profile.self.cycles-pp.page_counter_try_charge 0.96 ± 3% -0.2 0.73 ± 3% perf-profile.self.cycles-pp.mem_cgroup_charge_skmem 2.40 ± 3% -0.1 2.28 ± 2% perf-profile.self.cycles-pp.try_charge_memcg 0.42 ± 3% -0.1 0.31 ± 3% perf-profile.self.cycles-pp.mem_cgroup_uncharge_skmem 0.12 ± 3% -0.0 0.10 perf-profile.self.cycles-pp.select_task_rq_fair 0.15 ± 3% -0.0 0.13 ± 2% perf-profile.self.cycles-pp.__entry_text_start 0.20 ± 2% -0.0 0.19 perf-profile.self.cycles-pp.loopback_xmit 0.05 +0.0 0.06 perf-profile.self.cycles-pp.set_next_entity 0.05 +0.0 0.06 perf-profile.self.cycles-pp.__xfrm_policy_check2 0.06 +0.0 0.07 perf-profile.self.cycles-pp.exit_to_user_mode_prepare 0.19 +0.0 0.20 perf-profile.self.cycles-pp.sock_put 0.12 ± 3% +0.0 0.14 ± 3% perf-profile.self.cycles-pp.tcp_event_new_data_sent 0.12 +0.0 0.13 ± 2% perf-profile.self.cycles-pp.tcp_v4_do_rcv 0.19 ± 3% +0.0 0.20 ± 2% perf-profile.self.cycles-pp.update_curr 0.51 +0.0 0.53 perf-profile.self.cycles-pp.__fget_light 0.26 +0.0 0.28 ± 2% perf-profile.self.cycles-pp.ktime_get 0.16 ± 2% +0.0 0.18 ± 4% perf-profile.self.cycles-pp.recv_data 0.21 ± 2% +0.0 0.23 perf-profile.self.cycles-pp.__do_softirq 0.16 ± 5% +0.0 0.18 ± 6% perf-profile.self.cycles-pp.cgroup_rstat_updated 0.39 +0.0 0.42 perf-profile.self.cycles-pp.native_sched_clock 0.89 +0.0 0.91 perf-profile.self.cycles-pp.__inet_lookup_established 0.96 +0.0 0.99 perf-profile.self.cycles-pp.__tcp_transmit_skb 0.82 +0.0 0.85 perf-profile.self.cycles-pp.check_heap_object 0.46 +0.0 0.48 perf-profile.self.cycles-pp.net_rx_action 0.23 ± 3% +0.0 0.26 perf-profile.self.cycles-pp.aa_sk_perm 0.54 +0.0 0.57 perf-profile.self.cycles-pp.tcp_recvmsg_locked 0.53 +0.0 0.56 perf-profile.self.cycles-pp.tcp_v4_rcv 0.32 ± 3% +0.0 0.37 ± 5% perf-profile.self.cycles-pp.propagate_protected_usage 0.10 ± 4% +0.1 0.17 ± 2% perf-profile.self.cycles-pp.skb_attempt_defer_free 1.14 +0.1 1.21 perf-profile.self.cycles-pp.skb_release_data 15.32 +0.4 15.71 perf-profile.self.cycles-pp.copyout 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