Greeting, FYI, we noticed a -7.6% regression of netperf.Throughput_total_tps due to commit: commit: f0996bc2978e02d2ea898101462b960f6119b18f ("ubsan: Fix nasty -Wbuiltin-declaration-mismatch GCC-9 warnings") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master in testcase: netperf on test machine: 8 threads Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz with 8G memory with following parameters: ip: ipv4 runtime: 300s nr_threads: 200% cluster: cs-localhost test: TCP_RR cpufreq_governor: performance ucode: 0x27 test-description: Netperf is a benchmark that can be use to measure various aspect of networking performance. test-url: http://www.netperf.org/netperf/ Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml ========================================================================================= cluster/compiler/cpufreq_governor/ip/kconfig/nr_threads/rootfs/runtime/tbox_group/test/testcase/ucode: cs-localhost/gcc-7/performance/ipv4/x86_64-rhel-7.6/200%/debian-x86_64-2019-05-14.cgz/300s/lkp-hsw-d01/TCP_RR/netperf/0x27 commit: v5.1 f0996bc297 ("ubsan: Fix nasty -Wbuiltin-declaration-mismatch GCC-9 warnings") v5.1 f0996bc2978e02d2ea898101462 ---------------- --------------------------- %stddev %change %stddev \ | \ 529578 -7.6% 489241 netperf.Throughput_total_tps 33098 -7.6% 30577 netperf.Throughput_tps 1.526e+08 -9.6% 1.379e+08 ± 2% netperf.time.voluntary_context_switches 1.589e+08 -7.6% 1.468e+08 netperf.workload 26007 ± 11% -31.7% 17760 ± 10% cpuidle.POLL.usage 1.80 ± 40% -0.7 1.14 ± 19% mpstat.cpu.all.idle% 1038227 -7.1% 965017 vmstat.system.cs 4174 ± 12% +15.0% 4799 ± 5% slabinfo.anon_vma.active_objs 4212 ± 11% +14.0% 4799 ± 5% slabinfo.anon_vma.num_objs 329.81 -100.0% 0.00 uptime.boot 194.38 ± 9% -100.0% 0.00 uptime.idle 60071 +1.4% 60889 proc-vmstat.nr_active_anon 58101 +1.8% 59122 proc-vmstat.nr_anon_pages 4248 -1.7% 4175 proc-vmstat.nr_kernel_stack 60069 +1.4% 60886 proc-vmstat.nr_zone_active_anon 3.186e+09 -6.8% 2.968e+09 perf-stat.i.branch-instructions 88559276 -6.7% 82586895 perf-stat.i.branch-misses 1048131 -7.0% 975134 perf-stat.i.context-switches 1.82 +7.0% 1.94 perf-stat.i.cpi 4.744e+09 -7.0% 4.414e+09 perf-stat.i.dTLB-loads 11699752 ± 2% -7.6% 10814910 perf-stat.i.dTLB-store-misses 2.956e+09 -7.0% 2.748e+09 perf-stat.i.dTLB-stores 63.54 +6.4 69.97 perf-stat.i.iTLB-load-miss-rate% 17352165 ± 3% -12.4% 15198695 ± 4% perf-stat.i.iTLB-load-misses 9871780 -34.6% 6452252 perf-stat.i.iTLB-loads 1.61e+10 -6.9% 1.5e+10 perf-stat.i.instructions 0.56 -7.1% 0.52 perf-stat.i.ipc 1.80 +8.1% 1.95 perf-stat.overall.cpi 63.72 +6.4 70.17 perf-stat.overall.iTLB-load-miss-rate% 0.56 -7.5% 0.51 perf-stat.overall.ipc 3.177e+09 -6.9% 2.958e+09 perf-stat.ps.branch-instructions 88299894 -6.8% 82312493 perf-stat.ps.branch-misses 1045053 -7.0% 971889 perf-stat.ps.context-switches 4.73e+09 -7.0% 4.399e+09 perf-stat.ps.dTLB-loads 11665343 -7.6% 10778872 perf-stat.ps.dTLB-store-misses 2.947e+09 -7.1% 2.739e+09 perf-stat.ps.dTLB-stores 17301097 ± 3% -12.4% 15148078 ± 4% perf-stat.ps.iTLB-load-misses 9842789 -34.7% 6430777 perf-stat.ps.iTLB-loads 1.605e+10 -6.9% 1.495e+10 perf-stat.ps.instructions 4.91e+12 -7.6% 4.538e+12 perf-stat.total.instructions 27.60 -0.6 27.05 perf-profile.calltrace.cycles-pp.__x64_sys_recvfrom.do_syscall_64.entry_SYSCALL_64_after_hwframe 27.36 -0.5 26.82 perf-profile.calltrace.cycles-pp.__sys_recvfrom.__x64_sys_recvfrom.do_syscall_64.entry_SYSCALL_64_after_hwframe 25.94 -0.5 25.40 perf-profile.calltrace.cycles-pp.inet_recvmsg.__sys_recvfrom.__x64_sys_recvfrom.do_syscall_64.entry_SYSCALL_64_after_hwframe 25.52 -0.5 24.98 perf-profile.calltrace.cycles-pp.tcp_recvmsg.inet_recvmsg.__sys_recvfrom.__x64_sys_recvfrom.do_syscall_64 3.53 ± 5% -0.4 3.17 ± 2% perf-profile.calltrace.cycles-pp.__skb_datagram_iter.skb_copy_datagram_iter.tcp_recvmsg.inet_recvmsg.__sys_recvfrom 3.57 ± 5% -0.4 3.21 ± 2% perf-profile.calltrace.cycles-pp.skb_copy_datagram_iter.tcp_recvmsg.inet_recvmsg.__sys_recvfrom.__x64_sys_recvfrom 2.66 ± 3% -0.3 2.39 ± 3% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64 1.19 ± 7% -0.3 0.92 ± 3% perf-profile.calltrace.cycles-pp.__inet_lookup_established.tcp_v4_rcv.ip_protocol_deliver_rcu.ip_local_deliver_finish.ip_local_deliver 2.39 ± 3% -0.3 2.14 ± 3% perf-profile.calltrace.cycles-pp.pick_next_task_fair.__schedule.schedule.schedule_timeout.wait_woken 0.95 ± 5% -0.2 0.76 ± 6% perf-profile.calltrace.cycles-pp.kmem_cache_alloc_node.__alloc_skb.sk_stream_alloc_skb.tcp_sendmsg_locked.tcp_sendmsg 2.17 ± 3% -0.2 1.98 ± 2% perf-profile.calltrace.cycles-pp.syscall_return_via_sysret 1.34 ± 5% -0.2 1.17 ± 8% perf-profile.calltrace.cycles-pp.selinux_ip_postroute_compat.selinux_ip_postroute.nf_hook_slow.ip_output.__ip_queue_xmit 1.68 ± 5% -0.2 1.52 ± 4% perf-profile.calltrace.cycles-pp.selinux_ip_postroute.nf_hook_slow.ip_output.__ip_queue_xmit.__tcp_transmit_skb 1.90 ± 4% -0.1 1.75 ± 2% perf-profile.calltrace.cycles-pp.nf_hook_slow.ip_output.__ip_queue_xmit.__tcp_transmit_skb.tcp_write_xmit 0.94 ± 5% -0.1 0.83 ± 7% perf-profile.calltrace.cycles-pp.sockfd_lookup_light.__sys_sendto.__x64_sys_sendto.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.80 ± 8% -0.1 0.69 ± 8% perf-profile.calltrace.cycles-pp.__fget_light.sockfd_lookup_light.__sys_sendto.__x64_sys_sendto.do_syscall_64 0.62 ± 6% +0.1 0.74 ± 4% perf-profile.calltrace.cycles-pp.__netif_receive_skb_core.__netif_receive_skb_one_core.process_backlog.net_rx_action.__softirqentry_text_start 2.68 ± 3% +0.1 2.81 perf-profile.calltrace.cycles-pp.dev_hard_start_xmit.__dev_queue_xmit.ip_finish_output2.ip_output.__ip_queue_xmit 1.05 ± 5% +0.2 1.27 ± 6% perf-profile.calltrace.cycles-pp.reweight_entity.dequeue_task_fair.__schedule.schedule.schedule_timeout 3.24 ± 2% +0.2 3.47 ± 2% perf-profile.calltrace.cycles-pp.tcp_clean_rtx_queue.tcp_ack.tcp_rcv_established.tcp_v4_do_rcv.tcp_v4_rcv 0.84 ± 6% +0.3 1.09 ± 5% perf-profile.calltrace.cycles-pp.ttwu_do_wakeup.try_to_wake_up.__wake_up_common.__wake_up_common_lock.sock_def_readable 0.71 ± 8% +0.3 0.97 ± 4% perf-profile.calltrace.cycles-pp.check_preempt_curr.ttwu_do_wakeup.try_to_wake_up.__wake_up_common.__wake_up_common_lock 4.09 ± 3% +0.4 4.48 perf-profile.calltrace.cycles-pp.__dev_queue_xmit.ip_finish_output2.ip_output.__ip_queue_xmit.__tcp_transmit_skb 4.13 ± 3% +0.4 4.57 ± 2% perf-profile.calltrace.cycles-pp.dequeue_task_fair.__schedule.schedule.schedule_timeout.wait_woken 0.34 ± 81% +0.4 0.78 ± 2% perf-profile.calltrace.cycles-pp.check_preempt_wakeup.check_preempt_curr.ttwu_do_wakeup.try_to_wake_up.__wake_up_common 90.77 +0.5 91.22 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe 0.16 ±152% +0.5 0.63 ± 4% perf-profile.calltrace.cycles-pp.validate_xmit_skb.__dev_queue_xmit.ip_finish_output2.ip_output.__ip_queue_xmit 90.23 +0.5 90.70 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe 32.13 +0.5 32.62 perf-profile.calltrace.cycles-pp.net_rx_action.__softirqentry_text_start.do_softirq_own_stack.do_softirq.__local_bh_enable_ip 32.62 +0.5 33.12 perf-profile.calltrace.cycles-pp.__softirqentry_text_start.do_softirq_own_stack.do_softirq.__local_bh_enable_ip.ip_finish_output2 0.39 ± 65% +0.5 0.90 ± 4% perf-profile.calltrace.cycles-pp.tcp_schedule_loss_probe.tcp_write_xmit.__tcp_push_pending_frames.tcp_sendmsg_locked.tcp_sendmsg 32.89 +0.5 33.40 perf-profile.calltrace.cycles-pp.do_softirq_own_stack.do_softirq.__local_bh_enable_ip.ip_finish_output2.ip_output 31.17 +0.5 31.71 perf-profile.calltrace.cycles-pp.process_backlog.net_rx_action.__softirqentry_text_start.do_softirq_own_stack.do_softirq 41.58 +0.6 42.14 perf-profile.calltrace.cycles-pp.ip_output.__ip_queue_xmit.__tcp_transmit_skb.tcp_write_xmit.__tcp_push_pending_frames 47.15 +0.6 47.76 perf-profile.calltrace.cycles-pp.__tcp_transmit_skb.tcp_write_xmit.__tcp_push_pending_frames.tcp_sendmsg_locked.tcp_sendmsg 30.12 +0.6 30.74 perf-profile.calltrace.cycles-pp.__netif_receive_skb_one_core.process_backlog.net_rx_action.__softirqentry_text_start.do_softirq_own_stack 0.00 +0.6 0.63 ± 3% perf-profile.calltrace.cycles-pp.tcp_cleanup_rbuf.tcp_recvmsg.inet_recvmsg.__sys_recvfrom.__x64_sys_recvfrom 5.72 +0.7 6.41 perf-profile.calltrace.cycles-pp.tcp_ack.tcp_rcv_established.tcp_v4_do_rcv.tcp_v4_rcv.ip_protocol_deliver_rcu 22.36 +0.8 23.11 perf-profile.calltrace.cycles-pp.tcp_rcv_established.tcp_v4_do_rcv.tcp_v4_rcv.ip_protocol_deliver_rcu.ip_local_deliver_finish 22.77 +0.8 23.57 perf-profile.calltrace.cycles-pp.tcp_v4_do_rcv.tcp_v4_rcv.ip_protocol_deliver_rcu.ip_local_deliver_finish.ip_local_deliver 61.36 +1.1 62.43 perf-profile.calltrace.cycles-pp.__x64_sys_sendto.do_syscall_64.entry_SYSCALL_64_after_hwframe 61.07 +1.1 62.14 perf-profile.calltrace.cycles-pp.__sys_sendto.__x64_sys_sendto.do_syscall_64.entry_SYSCALL_64_after_hwframe 50.16 +1.3 51.45 perf-profile.calltrace.cycles-pp.tcp_write_xmit.__tcp_push_pending_frames.tcp_sendmsg_locked.tcp_sendmsg.sock_sendmsg 58.68 +1.3 59.98 perf-profile.calltrace.cycles-pp.tcp_sendmsg.sock_sendmsg.__sys_sendto.__x64_sys_sendto.do_syscall_64 59.36 +1.3 60.66 perf-profile.calltrace.cycles-pp.sock_sendmsg.__sys_sendto.__x64_sys_sendto.do_syscall_64.entry_SYSCALL_64_after_hwframe 50.37 +1.3 51.71 perf-profile.calltrace.cycles-pp.__tcp_push_pending_frames.tcp_sendmsg_locked.tcp_sendmsg.sock_sendmsg.__sys_sendto 57.27 +1.4 58.70 perf-profile.calltrace.cycles-pp.tcp_sendmsg_locked.tcp_sendmsg.sock_sendmsg.__sys_sendto.__x64_sys_sendto 27.64 -0.6 27.09 perf-profile.children.cycles-pp.__x64_sys_recvfrom 27.38 -0.5 26.83 perf-profile.children.cycles-pp.__sys_recvfrom 25.95 -0.5 25.41 perf-profile.children.cycles-pp.inet_recvmsg 3.55 ± 5% -0.4 3.18 ± 2% perf-profile.children.cycles-pp.__skb_datagram_iter 3.58 ± 5% -0.4 3.22 ± 2% perf-profile.children.cycles-pp.skb_copy_datagram_iter 2.68 ± 3% -0.3 2.40 ± 3% perf-profile.children.cycles-pp.entry_SYSCALL_64 1.20 ± 7% -0.3 0.93 ± 2% perf-profile.children.cycles-pp.__inet_lookup_established 2.55 ± 3% -0.2 2.33 ± 3% perf-profile.children.cycles-pp.pick_next_task_fair 0.98 ± 5% -0.2 0.77 ± 6% perf-profile.children.cycles-pp.kmem_cache_alloc_node 1.36 ± 4% -0.2 1.17 ± 2% perf-profile.children.cycles-pp.update_load_avg 1.35 ± 5% -0.2 1.19 ± 8% perf-profile.children.cycles-pp.selinux_ip_postroute_compat 1.25 ± 5% -0.2 1.08 ± 4% perf-profile.children.cycles-pp.release_sock 1.69 ± 4% -0.2 1.54 ± 4% perf-profile.children.cycles-pp.selinux_ip_postroute 1.21 ± 4% -0.1 1.07 ± 2% perf-profile.children.cycles-pp.ktime_get 1.11 ± 3% -0.1 0.99 ± 5% perf-profile.children.cycles-pp._raw_spin_lock_irqsave 2.19 ± 3% -0.1 2.08 ± 2% perf-profile.children.cycles-pp.sk_filter_trim_cap 1.00 ± 6% -0.1 0.89 ± 2% perf-profile.children.cycles-pp.tcp_mstamp_refresh 1.04 ± 3% -0.1 0.94 ± 2% perf-profile.children.cycles-pp._raw_spin_lock_bh 0.65 ± 6% -0.1 0.56 ± 3% perf-profile.children.cycles-pp.selinux_parse_skb 0.29 ± 9% -0.1 0.23 ± 4% perf-profile.children.cycles-pp.bictcp_acked 0.09 ± 15% -0.1 0.03 ±100% perf-profile.children.cycles-pp.should_failslab 0.17 ± 14% -0.0 0.12 ± 13% perf-profile.children.cycles-pp.__list_add_valid 0.18 ± 9% -0.0 0.14 ± 13% perf-profile.children.cycles-pp.tcp_rate_skb_sent 0.07 ± 27% +0.0 0.10 ± 19% perf-profile.children.cycles-pp.skb_clone_tx_timestamp 0.09 ± 16% +0.0 0.14 ± 9% perf-profile.children.cycles-pp.rb_first 0.22 ± 7% +0.0 0.27 ± 5% perf-profile.children.cycles-pp.clear_buddies 0.05 ± 52% +0.1 0.10 ± 22% perf-profile.children.cycles-pp.selinux_xfrm_sock_rcv_skb 0.19 ± 11% +0.1 0.24 ± 7% perf-profile.children.cycles-pp.tcp_stream_memory_free 0.06 ± 39% +0.1 0.12 ± 13% perf-profile.children.cycles-pp.ns_to_timespec64 0.36 ± 8% +0.1 0.42 ± 4% perf-profile.children.cycles-pp.__usecs_to_jiffies 0.21 ± 11% +0.1 0.28 ± 12% perf-profile.children.cycles-pp.native_load_tls 0.07 ± 23% +0.1 0.14 ± 3% perf-profile.children.cycles-pp.tcp_rbtree_insert 0.08 ± 21% +0.1 0.15 ± 8% perf-profile.children.cycles-pp.tcp_rate_skb_delivered 0.03 ±101% +0.1 0.10 ± 20% perf-profile.children.cycles-pp.tcp_rack_advance 0.29 ± 5% +0.1 0.38 ± 14% perf-profile.children.cycles-pp.tcp_rate_gen 0.02 ±152% +0.1 0.10 ± 7% perf-profile.children.cycles-pp.tcp_rack_update_reo_wnd 0.07 ± 27% +0.1 0.16 ± 7% perf-profile.children.cycles-pp.skb_clone 0.29 ± 6% +0.1 0.39 ± 7% perf-profile.children.cycles-pp.__tcp_select_window 0.20 ± 19% +0.1 0.30 ± 6% perf-profile.children.cycles-pp.tcp_send_delayed_ack 0.41 ± 8% +0.1 0.51 ± 9% perf-profile.children.cycles-pp.tcp_rearm_rto 0.22 ± 22% +0.1 0.32 ± 11% perf-profile.children.cycles-pp.netif_skb_features 0.01 ±300% +0.1 0.13 ± 15% perf-profile.children.cycles-pp.kmalloc_slab 0.63 ± 6% +0.1 0.75 ± 4% perf-profile.children.cycles-pp.__netif_receive_skb_core 2.69 ± 3% +0.1 2.82 perf-profile.children.cycles-pp.dev_hard_start_xmit 0.61 ± 8% +0.1 0.76 ± 9% perf-profile.children.cycles-pp.account_entity_dequeue 0.45 ± 19% +0.2 0.66 ± 3% perf-profile.children.cycles-pp.validate_xmit_skb 3.30 ± 3% +0.2 3.52 ± 2% perf-profile.children.cycles-pp.tcp_clean_rtx_queue 0.84 ± 6% +0.2 1.09 ± 4% perf-profile.children.cycles-pp.ttwu_do_wakeup 0.72 ± 7% +0.3 0.98 ± 4% perf-profile.children.cycles-pp.check_preempt_curr 0.54 ± 10% +0.3 0.81 ± 2% perf-profile.children.cycles-pp.check_preempt_wakeup 2.22 ± 3% +0.3 2.49 ± 3% perf-profile.children.cycles-pp.reweight_entity 0.35 ± 10% +0.3 0.64 ± 2% perf-profile.children.cycles-pp.tcp_cleanup_rbuf 4.13 ± 3% +0.4 4.53 perf-profile.children.cycles-pp.__dev_queue_xmit 0.71 ± 7% +0.4 1.13 ± 3% perf-profile.children.cycles-pp.tcp_schedule_loss_probe 90.85 +0.4 91.28 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 4.16 ± 3% +0.5 4.62 ± 2% perf-profile.children.cycles-pp.dequeue_task_fair 90.29 +0.5 90.75 perf-profile.children.cycles-pp.do_syscall_64 32.65 +0.5 33.15 perf-profile.children.cycles-pp.__softirqentry_text_start 32.19 +0.5 32.70 perf-profile.children.cycles-pp.net_rx_action 32.91 +0.5 33.42 perf-profile.children.cycles-pp.do_softirq_own_stack 31.19 +0.5 31.72 perf-profile.children.cycles-pp.process_backlog 41.60 +0.6 42.17 perf-profile.children.cycles-pp.ip_output 47.19 +0.6 47.80 perf-profile.children.cycles-pp.__tcp_transmit_skb 30.13 +0.6 30.76 perf-profile.children.cycles-pp.__netif_receive_skb_one_core 5.82 +0.7 6.52 perf-profile.children.cycles-pp.tcp_ack 22.41 +0.8 23.17 perf-profile.children.cycles-pp.tcp_rcv_established 22.77 +0.8 23.58 perf-profile.children.cycles-pp.tcp_v4_do_rcv 61.40 +1.1 62.46 perf-profile.children.cycles-pp.__x64_sys_sendto 61.09 +1.1 62.16 perf-profile.children.cycles-pp.__sys_sendto 58.74 +1.3 60.02 perf-profile.children.cycles-pp.tcp_sendmsg 59.36 +1.3 60.66 perf-profile.children.cycles-pp.sock_sendmsg 50.24 +1.3 51.55 perf-profile.children.cycles-pp.tcp_write_xmit 50.38 +1.4 51.74 perf-profile.children.cycles-pp.__tcp_push_pending_frames 57.40 +1.4 58.85 perf-profile.children.cycles-pp.tcp_sendmsg_locked 2.68 ± 3% -0.3 2.40 ± 3% perf-profile.self.cycles-pp.entry_SYSCALL_64 0.98 ± 8% -0.2 0.75 perf-profile.self.cycles-pp.__inet_lookup_established 0.90 ± 8% -0.2 0.70 ± 12% perf-profile.self.cycles-pp.ip_finish_output2 0.82 ± 9% -0.2 0.62 ± 8% perf-profile.self.cycles-pp.__check_object_size 1.09 ± 3% -0.1 0.96 ± 6% perf-profile.self.cycles-pp._raw_spin_lock_irqsave 0.61 ± 7% -0.1 0.51 ± 3% perf-profile.self.cycles-pp.selinux_parse_skb 0.57 ± 6% -0.1 0.50 perf-profile.self.cycles-pp.__sys_sendto 0.24 ± 10% -0.0 0.20 ± 10% perf-profile.self.cycles-pp.import_single_range 0.23 ± 10% -0.0 0.19 ± 10% perf-profile.self.cycles-pp.sk_filter_trim_cap 0.30 ± 6% -0.0 0.27 ± 7% perf-profile.self.cycles-pp.update_rq_clock 0.18 ± 11% +0.0 0.21 ± 8% perf-profile.self.cycles-pp._copy_from_iter_full 0.06 ± 25% +0.0 0.10 ± 23% perf-profile.self.cycles-pp.skb_clone_tx_timestamp 0.08 ± 24% +0.0 0.12 ± 16% perf-profile.self.cycles-pp.security_socket_recvmsg 0.18 ± 8% +0.0 0.22 ± 3% perf-profile.self.cycles-pp.clear_buddies 0.32 ± 5% +0.0 0.36 ± 4% perf-profile.self.cycles-pp.ip_rcv 0.07 ± 17% +0.0 0.12 ± 13% perf-profile.self.cycles-pp.rb_first 0.17 ± 6% +0.1 0.23 ± 7% perf-profile.self.cycles-pp.tcp_stream_memory_free 0.03 ± 82% +0.1 0.09 ± 21% perf-profile.self.cycles-pp.selinux_xfrm_sock_rcv_skb 0.21 ± 14% +0.1 0.27 ± 11% perf-profile.self.cycles-pp.__wake_up_common 0.14 ± 11% +0.1 0.21 ± 8% perf-profile.self.cycles-pp.__tcp_push_pending_frames 0.18 ± 11% +0.1 0.25 ± 9% perf-profile.self.cycles-pp.__netif_receive_skb_one_core 0.07 ± 23% +0.1 0.13 ± 3% perf-profile.self.cycles-pp.tcp_rbtree_insert 0.21 ± 11% +0.1 0.28 ± 12% perf-profile.self.cycles-pp.native_load_tls 0.20 ± 11% +0.1 0.27 ± 14% perf-profile.self.cycles-pp.dequeue_entity 0.33 ± 9% +0.1 0.40 ± 9% perf-profile.self.cycles-pp.tcp_rearm_rto 0.03 ±122% +0.1 0.10 ± 22% perf-profile.self.cycles-pp.tcp_rack_advance 0.00 +0.1 0.07 ± 15% perf-profile.self.cycles-pp.netif_rx 0.07 ± 24% +0.1 0.15 ± 10% perf-profile.self.cycles-pp.tcp_rate_skb_delivered 0.16 ± 24% +0.1 0.24 ± 18% perf-profile.self.cycles-pp.netif_skb_features 0.02 ±152% +0.1 0.10 ± 9% perf-profile.self.cycles-pp.tcp_rack_update_reo_wnd 0.41 ± 17% +0.1 0.49 ± 12% perf-profile.self.cycles-pp.enqueue_entity 0.28 ± 5% +0.1 0.37 ± 13% perf-profile.self.cycles-pp.tcp_rate_gen 0.18 ± 20% +0.1 0.27 ± 4% perf-profile.self.cycles-pp.validate_xmit_skb 0.20 ± 20% +0.1 0.29 ± 5% perf-profile.self.cycles-pp.tcp_send_delayed_ack 0.06 ± 26% +0.1 0.15 ± 7% perf-profile.self.cycles-pp.skb_clone 0.28 ± 7% +0.1 0.38 ± 8% perf-profile.self.cycles-pp.__tcp_select_window 0.11 ± 18% +0.1 0.21 ± 15% perf-profile.self.cycles-pp.netif_rx_internal 0.42 ± 10% +0.1 0.54 ± 6% perf-profile.self.cycles-pp.__alloc_skb 0.00 +0.1 0.12 ± 13% perf-profile.self.cycles-pp.kmalloc_slab 0.53 ± 7% +0.1 0.65 ± 8% perf-profile.self.cycles-pp.account_entity_dequeue 0.62 ± 6% +0.1 0.75 ± 4% perf-profile.self.cycles-pp.__netif_receive_skb_core 0.60 ± 5% +0.2 0.77 ± 2% perf-profile.self.cycles-pp.try_to_wake_up 0.20 ± 10% +0.2 0.38 ± 5% perf-profile.self.cycles-pp.tcp_cleanup_rbuf 1.23 ± 6% +0.2 1.40 ± 3% perf-profile.self.cycles-pp.tcp_sendmsg_locked 0.90 ± 5% +0.2 1.12 ± 3% perf-profile.self.cycles-pp.reweight_entity 0.35 ± 13% +0.2 0.59 ± 3% perf-profile.self.cycles-pp.check_preempt_wakeup 1.14 ± 6% +0.3 1.39 ± 3% perf-profile.self.cycles-pp.tcp_write_xmit 0.37 ± 10% +0.3 0.64 ± 5% perf-profile.self.cycles-pp.tcp_schedule_loss_probe 1.10 ± 6% +0.3 1.45 ± 2% perf-profile.self.cycles-pp.tcp_ack netperf.Throughput_tps 34000 +-+-----------------------------------------------------------------+ | + + .++ + | 33500 +-+.+.+. .+ .+ + +. .+.+. + .+. .+.+. .+ | 33000 +-+ ++.+ + .+ + +.+.+ + .+ + +.++ + .+ | | + + + | 32500 +-+ | 32000 +-+ | | | 31500 +-+ | 31000 +-+ O | | O O O O O O O | 30500 +-+ O O O O O O O O 30000 +-+ O O | O O O O O O O O O | 29500 +-O---O-O----------------O--O-O-O-O-O-O-----------------------------+ netperf.Throughput_total_tps 550000 +-+----------------------------------------------------------------+ | + .+ | 540000 +-+ + + .+.+ + | 530000 +-+.+.+ .+. + + +. .++. .+. +. .+.+. +. | | + +.+.+ +.+ + +.+.+ +.+ + +.+.+ +.+ | 520000 +-+ | | | 510000 +-+ | | | 500000 +-+ O | 490000 +-+ O O O O O O O | | O O O O OO O O 480000 +-+ O O O O | O O O O O O O O O O | 470000 +-O----O----------------O-------O-OO-O-----------------------------+ netperf.workload 1.65e+08 +-+--------------------------------------------------------------+ | .+ .+ | | .+ + +.+ + | 1.6e+08 +-+.++. .+. .+ .+ + +. .++. .+. .+ .+.+. .++. .+. .+ .+ | | + + + + + + + + + + + + | | | 1.55e+08 +-+ | | | 1.5e+08 +-+ | | O O | | OO O O O O O O OO O O 1.45e+08 +-+ O O O | O O O O O O O O O | | O O O O O O O OO O O | 1.4e+08 +-+--------------------------------------------------------------+ netperf.time.voluntary_context_switches 1.6e+08 +-+--------------------------------------------------------------+ | +.+ +. | 1.55e+08 +-+. + + : + .+. .+. | | ++. +. .+ + + .+ ++. +. .+.+ ++. +. .+ | | +. + ++ + +. + ++ +. + ++ | 1.5e+08 +-+ + + + | | O | 1.45e+08 +-+ | | O O O O O | 1.4e+08 +-+ O O O O O O O O | | O O O O O O O O O O O O O O O | OO O O | 1.35e+08 O-+ O O O | | | 1.3e+08 +-+--------------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample 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. Thanks, Rong Chen