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Message-ID: <20210818150309.GD1721@xsang-OptiPlex-9020>
Date:   Wed, 18 Aug 2021 23:03:09 +0800
From:   kernel test robot <oliver.sang@...el.com>
To:     Mel Gorman <mgorman@...hsingularity.net>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>, x86@...nel.org,
        lkp@...ts.01.org, lkp@...el.com, ying.huang@...el.com,
        feng.tang@...el.com, zhengjun.xing@...ux.intel.com,
        aubrey.li@...ux.intel.com, yu.c.chen@...el.com
Subject: [sched/fair]  56498cfb04:  netperf.Throughput_tps -5.4% regression



Greeting,

FYI, we noticed a -5.4% regression of netperf.Throughput_tps due to commit:


commit: 56498cfb045d7147cdcba33795d19429afcd1d00 ("sched/fair: Avoid a second scan of target in select_idle_cpu")
https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git sched/core


in testcase: netperf
on test machine: 128 threads 2 sockets Intel(R) Xeon(R) Gold 6338 CPU @ 2.00GHz with 256G memory
with following parameters:

	ip: ipv4
	runtime: 300s
	nr_threads: 50%
	cluster: cs-localhost
	test: UDP_RR
	cpufreq_governor: performance
	ucode: 0xd000280

test-description: Netperf is a benchmark that can be use to measure various aspect of networking performance.
test-url: http://www.netperf.org/netperf/



If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@...el.com>


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 split-job --compatible job.yaml  # generate the yaml file for lkp run
        bin/lkp run                    generated-yaml-file

=========================================================================================
cluster/compiler/cpufreq_governor/ip/kconfig/nr_threads/rootfs/runtime/tbox_group/test/testcase/ucode:
  cs-localhost/gcc-9/performance/ipv4/x86_64-rhel-8.3/50%/debian-10.4-x86_64-20200603.cgz/300s/lkp-icl-2sp2/UDP_RR/netperf/0xd000280

commit: 
  89aafd67f2 ("sched/fair: Use prev instead of new target as recent_used_cpu")
  56498cfb04 ("sched/fair: Avoid a second scan of target in select_idle_cpu")

89aafd67f28c9e3b 56498cfb045d7147cdcba33795d 
---------------- --------------------------- 
         %stddev     %change         %stddev
             \          |                \  
   4980199            -5.4%    4710753        netperf.Throughput_total_tps
     77815            -5.4%      73605        netperf.Throughput_tps
      3057            -1.5%       3012        netperf.time.percent_of_cpu_this_job_got
      8502            -1.0%       8417        netperf.time.system_time
    704.60 ±  6%      -7.3%     652.99        netperf.time.user_time
 1.475e+09            -4.6%  1.407e+09        netperf.time.voluntary_context_switches
 1.494e+09            -5.4%  1.413e+09        netperf.workload
     81047 ± 24%    +100.4%     162384 ± 32%  numa-meminfo.node1.AnonPages.max
     74515 ± 45%     -62.9%      27610 ± 70%  numa-numastat.node0.other_node
     74346 ± 45%     -62.2%      28115 ± 67%  numa-vmstat.node0.numa_other
     44.36            +0.8       45.20        turbostat.C1%
      8565 ± 16%     -14.3%       7342 ± 20%  interrupts.CPU93.NMI:Non-maskable_interrupts
      8565 ± 16%     -14.3%       7342 ± 20%  interrupts.CPU93.PMI:Performance_monitoring_interrupts
  19377271            -5.2%   18374412        vmstat.system.cs
   9888699            -5.0%    9397833        vmstat.system.in
    789686 ±  4%      +5.8%     835223 ±  3%  proc-vmstat.nr_mapped
      3724            +2.9%       3834        proc-vmstat.nr_page_table_pages
   1120470            +5.3%    1179918 ±  4%  proc-vmstat.numa_pte_updates
      9.40 ±  2%     +37.2%      12.90        perf-stat.i.MPKI
 3.325e+10            -5.3%  3.148e+10        perf-stat.i.branch-instructions
 4.653e+08            -4.8%  4.431e+08        perf-stat.i.branch-misses
  14090850 ±  7%     +23.6%   17410487 ±  7%  perf-stat.i.cache-misses
 1.558e+09           +29.7%  2.021e+09        perf-stat.i.cache-references
  19525342            -5.1%   18528333        perf-stat.i.context-switches
      1.48            +4.0%       1.54        perf-stat.i.cpi
 2.478e+11            -2.3%  2.422e+11        perf-stat.i.cpu-cycles
     20475 ±  7%     -23.0%      15760 ±  9%  perf-stat.i.cycles-between-cache-misses
      0.02 ±  2%      +0.0        0.03 ± 92%  perf-stat.i.dTLB-load-miss-rate%
   8389062 ±  2%     +12.1%    9400511 ±  2%  perf-stat.i.dTLB-load-misses
 4.883e+10            -5.4%  4.619e+10        perf-stat.i.dTLB-loads
      0.00 ±  6%      +0.0        0.00 ± 56%  perf-stat.i.dTLB-store-miss-rate%
 2.983e+10            -5.5%  2.821e+10        perf-stat.i.dTLB-stores
 1.688e+11            -5.4%  1.598e+11        perf-stat.i.instructions
      0.68            -3.4%       0.66        perf-stat.i.ipc
      1.94            -2.3%       1.89        perf-stat.i.metric.GHz
    886.48            -4.9%     842.91        perf-stat.i.metric.M/sec
      9.23 ±  2%     +37.1%      12.65        perf-stat.overall.MPKI
      1.47            +3.3%       1.52        perf-stat.overall.cpi
     17698 ±  7%     -21.0%      13980 ±  7%  perf-stat.overall.cycles-between-cache-misses
      0.02 ±  2%      +0.0        0.02 ±  3%  perf-stat.overall.dTLB-load-miss-rate%
      0.00 ±  6%      +0.0        0.00 ±  6%  perf-stat.overall.dTLB-store-miss-rate%
      0.68            -3.2%       0.66        perf-stat.overall.ipc
 3.314e+10            -5.3%  3.137e+10        perf-stat.ps.branch-instructions
 4.638e+08            -4.8%  4.416e+08        perf-stat.ps.branch-misses
  14042045 ±  8%     +23.6%   17351753 ±  7%  perf-stat.ps.cache-misses
 1.553e+09           +29.7%  2.014e+09        perf-stat.ps.cache-references
  19460780            -5.1%   18466153        perf-stat.ps.context-switches
  2.47e+11            -2.3%  2.414e+11        perf-stat.ps.cpu-cycles
   8348081 ±  2%     +12.1%    9359431 ±  2%  perf-stat.ps.dTLB-load-misses
 4.866e+10            -5.4%  4.603e+10        perf-stat.ps.dTLB-loads
 2.973e+10            -5.5%  2.811e+10        perf-stat.ps.dTLB-stores
 1.683e+11            -5.4%  1.592e+11        perf-stat.ps.instructions
 5.085e+13            -4.8%  4.841e+13        perf-stat.total.instructions
     44.71            -1.0       43.72        perf-profile.calltrace.cycles-pp.asm_sysvec_reschedule_ipi.acpi_idle_do_entry.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter
     27.78            -0.6       27.20        perf-profile.calltrace.cycles-pp.cpuidle_enter.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
     27.63            -0.6       27.07        perf-profile.calltrace.cycles-pp.cpuidle_enter_state.cpuidle_enter.do_idle.cpu_startup_entry.start_secondary
     26.02            -0.5       25.49        perf-profile.calltrace.cycles-pp.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter.do_idle.cpu_startup_entry
      1.81 ±  2%      -0.2        1.58 ±  2%  perf-profile.calltrace.cycles-pp.ip_route_output_flow.udp_sendmsg.sock_sendmsg.__sys_sendto.__x64_sys_sendto
      1.76 ±  2%      -0.2        1.53 ±  2%  perf-profile.calltrace.cycles-pp.ip_route_output_key_hash.ip_route_output_flow.udp_sendmsg.sock_sendmsg.__sys_sendto
      1.51 ±  2%      -0.2        1.31 ±  2%  perf-profile.calltrace.cycles-pp.ip_route_output_key_hash_rcu.ip_route_output_key_hash.ip_route_output_flow.udp_sendmsg.sock_sendmsg
      2.75 ±  2%      -0.1        2.64 ±  2%  perf-profile.calltrace.cycles-pp.menu_select.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
      1.02 ±  4%      -0.1        0.92 ±  4%  perf-profile.calltrace.cycles-pp.fib_table_lookup.ip_route_output_key_hash_rcu.ip_route_output_key_hash.ip_route_output_flow.udp_sendmsg
      0.97            -0.1        0.91        perf-profile.calltrace.cycles-pp.ip_generic_getfrag.__ip_append_data.ip_make_skb.udp_sendmsg.sock_sendmsg
      0.77            -0.1        0.70        perf-profile.calltrace.cycles-pp.security_socket_sendmsg.sock_sendmsg.__sys_sendto.__x64_sys_sendto.do_syscall_64
      0.61            -0.1        0.55        perf-profile.calltrace.cycles-pp._copy_from_iter_full.ip_generic_getfrag.__ip_append_data.ip_make_skb.udp_sendmsg
      5.78            -0.1        5.73        perf-profile.calltrace.cycles-pp.acpi_idle_do_entry.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter.do_idle
      1.44            -0.0        1.40        perf-profile.calltrace.cycles-pp.ttwu_do_wakeup.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock
      1.34            -0.0        1.29        perf-profile.calltrace.cycles-pp.check_preempt_curr.ttwu_do_wakeup.try_to_wake_up.autoremove_wake_function.__wake_up_common
      0.84            -0.0        0.80        perf-profile.calltrace.cycles-pp.native_apic_msr_eoi_write.sysvec_reschedule_ipi.asm_sysvec_reschedule_ipi.acpi_idle_do_entry.acpi_idle_enter
      0.54            -0.0        0.52        perf-profile.calltrace.cycles-pp.__switch_to
      0.63            -0.0        0.60        perf-profile.calltrace.cycles-pp.update_load_avg.set_next_entity.pick_next_task_fair.pick_next_task.__schedule
      0.55            -0.0        0.53        perf-profile.calltrace.cycles-pp.pick_next_task.__schedule.schedule.schedule_timeout.__skb_wait_for_more_packets
      1.04            +0.0        1.08        perf-profile.calltrace.cycles-pp.update_load_avg.dequeue_entity.dequeue_task_fair.__schedule.schedule
      0.62 ±  2%      +0.0        0.66        perf-profile.calltrace.cycles-pp.update_load_avg.enqueue_entity.enqueue_task_fair.ttwu_do_activate.try_to_wake_up
      0.58 ±  2%      +0.0        0.63        perf-profile.calltrace.cycles-pp.__slab_free.__consume_stateless_skb.udp_recvmsg.inet_recvmsg.__sys_recvfrom
      0.70 ±  2%      +0.1        0.75        perf-profile.calltrace.cycles-pp.perf_trace_sched_wakeup_template.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock
      2.13            +0.1        2.18        perf-profile.calltrace.cycles-pp.sysvec_reschedule_ipi.asm_sysvec_reschedule_ipi.acpi_idle_do_entry.acpi_idle_enter.cpuidle_enter_state
      1.29 ±  2%      +0.1        1.35        perf-profile.calltrace.cycles-pp.update_curr.dequeue_entity.dequeue_task_fair.__schedule.schedule
      0.92            +0.1        0.98        perf-profile.calltrace.cycles-pp.irqtime_account_irq.__softirqentry_text_start.do_softirq.__local_bh_enable_ip.ip_finish_output2
      0.80 ±  2%      +0.1        0.86        perf-profile.calltrace.cycles-pp.sock_wfree.loopback_xmit.dev_hard_start_xmit.__dev_queue_xmit.ip_finish_output2
      0.65 ±  2%      +0.1        0.73        perf-profile.calltrace.cycles-pp.switch_mm_irqs_off.__schedule.schedule_idle.do_idle.cpu_startup_entry
      0.94            +0.1        1.03        perf-profile.calltrace.cycles-pp.tick_nohz_idle_exit.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
      0.92 ±  2%      +0.1        1.00        perf-profile.calltrace.cycles-pp.__check_object_size.udp_recvmsg.inet_recvmsg.__sys_recvfrom.__x64_sys_recvfrom
      0.96            +0.1        1.05        perf-profile.calltrace.cycles-pp.select_task_rq_fair.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock
      1.64 ±  2%      +0.1        1.73        perf-profile.calltrace.cycles-pp.loopback_xmit.dev_hard_start_xmit.__dev_queue_xmit.ip_finish_output2.ip_output
      1.34 ±  3%      +0.1        1.43        perf-profile.calltrace.cycles-pp.__consume_stateless_skb.udp_recvmsg.inet_recvmsg.__sys_recvfrom.__x64_sys_recvfrom
      1.77            +0.1        1.87        perf-profile.calltrace.cycles-pp.dev_hard_start_xmit.__dev_queue_xmit.ip_finish_output2.ip_output.ip_send_skb
      2.96            +0.1        3.06        perf-profile.calltrace.cycles-pp.sock_alloc_send_pskb.__ip_append_data.ip_make_skb.udp_sendmsg.sock_sendmsg
      2.52            +0.1        2.62        perf-profile.calltrace.cycles-pp.__dev_queue_xmit.ip_finish_output2.ip_output.ip_send_skb.udp_send_skb
      0.56 ±  3%      +0.1        0.66        perf-profile.calltrace.cycles-pp.update_ts_time_stats.tick_nohz_idle_exit.do_idle.cpu_startup_entry.start_secondary
      1.09 ±  2%      +0.1        1.20        perf-profile.calltrace.cycles-pp._copy_to_iter.udp_recvmsg.inet_recvmsg.__sys_recvfrom.__x64_sys_recvfrom
      0.84 ±  3%      +0.1        0.95        perf-profile.calltrace.cycles-pp.irqentry_enter.sysvec_reschedule_ipi.asm_sysvec_reschedule_ipi.acpi_idle_do_entry.acpi_idle_enter
      0.68 ±  2%      +0.1        0.78        perf-profile.calltrace.cycles-pp.select_idle_sibling.select_task_rq_fair.try_to_wake_up.autoremove_wake_function.__wake_up_common
      3.13            +0.1        3.23        perf-profile.calltrace.cycles-pp.dequeue_entity.dequeue_task_fair.__schedule.schedule.schedule_timeout
      0.73 ±  3%      +0.1        0.83        perf-profile.calltrace.cycles-pp.copyout._copy_to_iter.udp_recvmsg.inet_recvmsg.__sys_recvfrom
      0.62 ±  4%      +0.1        0.72        perf-profile.calltrace.cycles-pp.copy_user_generic_unrolled.copyout._copy_to_iter.udp_recvmsg.inet_recvmsg
      3.50            +0.1        3.60        perf-profile.calltrace.cycles-pp.dequeue_task_fair.__schedule.schedule.schedule_timeout.__skb_wait_for_more_packets
      0.79 ±  3%      +0.1        0.91        perf-profile.calltrace.cycles-pp.__ksize.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb.__ip_append_data
      7.12            +0.1        7.25        perf-profile.calltrace.cycles-pp.schedule.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg
      6.89            +0.2        7.04        perf-profile.calltrace.cycles-pp.__schedule.schedule.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp
      0.99 ±  3%      +0.2        1.15        perf-profile.calltrace.cycles-pp.update_rq_clock.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock
      1.90            +0.2        2.07        perf-profile.calltrace.cycles-pp.set_next_entity.pick_next_task_fair.pick_next_task.__schedule.schedule_idle
      1.94            +0.2        2.10        perf-profile.calltrace.cycles-pp.enqueue_entity.enqueue_task_fair.ttwu_do_activate.try_to_wake_up.autoremove_wake_function
      7.79            +0.2        8.00        perf-profile.calltrace.cycles-pp.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg.inet_recvmsg
      2.62            +0.2        2.82        perf-profile.calltrace.cycles-pp.ttwu_do_activate.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock
      2.52            +0.2        2.73        perf-profile.calltrace.cycles-pp.enqueue_task_fair.ttwu_do_activate.try_to_wake_up.autoremove_wake_function.__wake_up_common
      2.79            +0.2        3.02        perf-profile.calltrace.cycles-pp.pick_next_task_fair.pick_next_task.__schedule.schedule_idle.do_idle
      3.10            +0.3        3.36        perf-profile.calltrace.cycles-pp.pick_next_task.__schedule.schedule_idle.do_idle.cpu_startup_entry
      0.35 ± 70%      +0.3        0.62        perf-profile.calltrace.cycles-pp.nr_iowait_cpu.update_ts_time_stats.tick_nohz_idle_exit.do_idle.cpu_startup_entry
      9.02            +0.3        9.31        perf-profile.calltrace.cycles-pp.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg.inet_recvmsg.__sys_recvfrom
      6.05            +0.4        6.40        perf-profile.calltrace.cycles-pp.schedule_idle.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
      5.78            +0.4        6.15        perf-profile.calltrace.cycles-pp.__schedule.schedule_idle.do_idle.cpu_startup_entry.start_secondary
     10.77            +0.4       11.17        perf-profile.calltrace.cycles-pp.__skb_recv_udp.udp_recvmsg.inet_recvmsg.__sys_recvfrom.__x64_sys_recvfrom
      0.00            +0.5        0.52 ±  3%  perf-profile.calltrace.cycles-pp.skb_release_data.__consume_stateless_skb.udp_recvmsg.inet_recvmsg.__sys_recvfrom
     18.15            +0.6       18.73        perf-profile.calltrace.cycles-pp.__x64_sys_recvfrom.do_syscall_64.entry_SYSCALL_64_after_hwframe
     17.97            +0.6       18.56        perf-profile.calltrace.cycles-pp.__sys_recvfrom.__x64_sys_recvfrom.do_syscall_64.entry_SYSCALL_64_after_hwframe
     55.03            +0.6       55.64        perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe
      8.05            +0.6        8.67        perf-profile.calltrace.cycles-pp.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock.sock_def_readable
      8.28            +0.6        8.90        perf-profile.calltrace.cycles-pp.autoremove_wake_function.__wake_up_common.__wake_up_common_lock.sock_def_readable.__udp_enqueue_schedule_skb
     15.65            +0.7       16.30        perf-profile.calltrace.cycles-pp.inet_recvmsg.__sys_recvfrom.__x64_sys_recvfrom.do_syscall_64.entry_SYSCALL_64_after_hwframe
     15.52            +0.7       16.18        perf-profile.calltrace.cycles-pp.udp_recvmsg.inet_recvmsg.__sys_recvfrom.__x64_sys_recvfrom.do_syscall_64
     15.18            +0.7       15.86        perf-profile.calltrace.cycles-pp.net_rx_action.__softirqentry_text_start.do_softirq.__local_bh_enable_ip.ip_finish_output2
     14.65            +0.7       15.34        perf-profile.calltrace.cycles-pp.__napi_poll.net_rx_action.__softirqentry_text_start.do_softirq.__local_bh_enable_ip
     17.11            +0.7       17.81        perf-profile.calltrace.cycles-pp.__local_bh_enable_ip.ip_finish_output2.ip_output.ip_send_skb.udp_send_skb
     16.91            +0.7       17.61        perf-profile.calltrace.cycles-pp.do_softirq.__local_bh_enable_ip.ip_finish_output2.ip_output.ip_send_skb
     16.65            +0.7       17.36        perf-profile.calltrace.cycles-pp.__softirqentry_text_start.do_softirq.__local_bh_enable_ip.ip_finish_output2.ip_output
      8.79            +0.7        9.51        perf-profile.calltrace.cycles-pp.__wake_up_common.__wake_up_common_lock.sock_def_readable.__udp_enqueue_schedule_skb.udp_queue_rcv_one_skb
      9.06            +0.7        9.79        perf-profile.calltrace.cycles-pp.__wake_up_common_lock.sock_def_readable.__udp_enqueue_schedule_skb.udp_queue_rcv_one_skb.udp_unicast_rcv_skb
     21.83            +0.7       22.58        perf-profile.calltrace.cycles-pp.udp_send_skb.udp_sendmsg.sock_sendmsg.__sys_sendto.__x64_sys_sendto
     14.55            +0.8       15.31        perf-profile.calltrace.cycles-pp.process_backlog.__napi_poll.net_rx_action.__softirqentry_text_start.do_softirq
     21.40            +0.8       22.16        perf-profile.calltrace.cycles-pp.ip_send_skb.udp_send_skb.udp_sendmsg.sock_sendmsg.__sys_sendto
     21.02            +0.8       21.78        perf-profile.calltrace.cycles-pp.ip_output.ip_send_skb.udp_send_skb.udp_sendmsg.sock_sendmsg
     20.17            +0.8       20.95        perf-profile.calltrace.cycles-pp.ip_finish_output2.ip_output.ip_send_skb.udp_send_skb.udp_sendmsg
      9.51            +0.8       10.30        perf-profile.calltrace.cycles-pp.sock_def_readable.__udp_enqueue_schedule_skb.udp_queue_rcv_one_skb.udp_unicast_rcv_skb.__udp4_lib_rcv
      9.87            +0.8       10.66        perf-profile.calltrace.cycles-pp.__udp_enqueue_schedule_skb.udp_queue_rcv_one_skb.udp_unicast_rcv_skb.__udp4_lib_rcv.ip_protocol_deliver_rcu
     13.38            +0.8       14.20        perf-profile.calltrace.cycles-pp.__netif_receive_skb_one_core.process_backlog.__napi_poll.net_rx_action.__softirqentry_text_start
     12.87            +0.8       13.72        perf-profile.calltrace.cycles-pp.ip_rcv.__netif_receive_skb_one_core.process_backlog.__napi_poll.net_rx_action
     11.06            +0.9       11.91        perf-profile.calltrace.cycles-pp.udp_queue_rcv_one_skb.udp_unicast_rcv_skb.__udp4_lib_rcv.ip_protocol_deliver_rcu.ip_local_deliver_finish
     12.27            +0.9       13.13        perf-profile.calltrace.cycles-pp.ip_local_deliver_finish.ip_local_deliver.ip_rcv.__netif_receive_skb_one_core.process_backlog
     12.21            +0.9       13.07        perf-profile.calltrace.cycles-pp.ip_protocol_deliver_rcu.ip_local_deliver_finish.ip_local_deliver.ip_rcv.__netif_receive_skb_one_core
     12.00            +0.9       12.86        perf-profile.calltrace.cycles-pp.__udp4_lib_rcv.ip_protocol_deliver_rcu.ip_local_deliver_finish.ip_local_deliver.ip_rcv
     11.15            +0.9       12.01        perf-profile.calltrace.cycles-pp.udp_unicast_rcv_skb.__udp4_lib_rcv.ip_protocol_deliver_rcu.ip_local_deliver_finish.ip_local_deliver
     12.35            +0.9       13.21        perf-profile.calltrace.cycles-pp.ip_local_deliver.ip_rcv.__netif_receive_skb_one_core.process_backlog.__napi_poll
     28.03            -0.6       27.44        perf-profile.children.cycles-pp.cpuidle_enter
     27.91            -0.6       27.34        perf-profile.children.cycles-pp.cpuidle_enter_state
     26.24            -0.5       25.72        perf-profile.children.cycles-pp.acpi_idle_enter
     25.83            -0.5       25.32        perf-profile.children.cycles-pp.acpi_idle_do_entry
     23.91            -0.5       23.43        perf-profile.children.cycles-pp.asm_sysvec_reschedule_ipi
      1.82 ±  2%      -0.2        1.59 ±  2%  perf-profile.children.cycles-pp.ip_route_output_flow
      1.77            -0.2        1.55 ±  2%  perf-profile.children.cycles-pp.ip_route_output_key_hash
      1.54 ±  2%      -0.2        1.34 ±  2%  perf-profile.children.cycles-pp.ip_route_output_key_hash_rcu
      2.82 ±  3%      -0.1        2.70 ±  2%  perf-profile.children.cycles-pp.menu_select
      1.03 ±  4%      -0.1        0.93 ±  4%  perf-profile.children.cycles-pp.fib_table_lookup
      0.77 ±  2%      -0.1        0.69        perf-profile.children.cycles-pp.syscall_return_via_sysret
      0.58 ±  2%      -0.1        0.51 ±  2%  perf-profile.children.cycles-pp.kmem_cache_alloc_node
      0.63            -0.1        0.57        perf-profile.children.cycles-pp._copy_from_iter_full
      0.78            -0.1        0.72        perf-profile.children.cycles-pp.security_socket_sendmsg
      0.99            -0.1        0.93        perf-profile.children.cycles-pp.ip_generic_getfrag
      1.23            -0.1        1.17        perf-profile.children.cycles-pp.sched_clock_cpu
      0.58            -0.1        0.52        perf-profile.children.cycles-pp.move_addr_to_kernel
      1.46            -0.1        1.41        perf-profile.children.cycles-pp.ttwu_do_wakeup
      0.45 ±  2%      -0.0        0.40        perf-profile.children.cycles-pp._copy_from_user
      1.12            -0.0        1.08        perf-profile.children.cycles-pp.__switch_to
      0.34 ±  4%      -0.0        0.30        perf-profile.children.cycles-pp.rcu_read_unlock_strict
      1.35            -0.0        1.30        perf-profile.children.cycles-pp.check_preempt_curr
      1.32            -0.0        1.27        perf-profile.children.cycles-pp.native_irq_return_iret
      1.00            -0.0        0.95        perf-profile.children.cycles-pp.native_sched_clock
      0.17 ±  6%      -0.0        0.13 ±  3%  perf-profile.children.cycles-pp.xfrm_lookup_route
      1.00 ±  2%      -0.0        0.96        perf-profile.children.cycles-pp.native_apic_msr_eoi_write
      0.23 ±  4%      -0.0        0.19        perf-profile.children.cycles-pp.__cond_resched
      0.20 ± 11%      -0.0        0.16 ±  6%  perf-profile.children.cycles-pp.ip_setup_cork
      0.24 ±  4%      -0.0        0.20 ±  2%  perf-profile.children.cycles-pp.import_single_range
      0.89            -0.0        0.86        perf-profile.children.cycles-pp.sockfd_lookup_light
      0.11 ±  3%      -0.0        0.08 ±  5%  perf-profile.children.cycles-pp.apparmor_socket_sendmsg
      0.50            -0.0        0.48        perf-profile.children.cycles-pp.tick_nohz_idle_enter
      0.07 ±  9%      -0.0        0.04 ± 45%  perf-profile.children.cycles-pp.find_exception
      0.13 ±  6%      -0.0        0.10 ±  3%  perf-profile.children.cycles-pp.__fdget
      0.33            -0.0        0.30        perf-profile.children.cycles-pp.copy_fpregs_to_fpstate
      0.43            -0.0        0.41        perf-profile.children.cycles-pp.__wrgsbase_inactive
      0.11 ±  6%      -0.0        0.09 ±  4%  perf-profile.children.cycles-pp.xfrm_lookup_with_ifid
      0.09 ±  7%      -0.0        0.07 ±  5%  perf-profile.children.cycles-pp.rb_erase
      0.07 ± 10%      -0.0        0.05        perf-profile.children.cycles-pp.finish_wait
      0.41            -0.0        0.39        perf-profile.children.cycles-pp.sock_recvmsg
      0.36            -0.0        0.34 ±  2%  perf-profile.children.cycles-pp.security_socket_recvmsg
      0.25 ±  4%      -0.0        0.23 ±  2%  perf-profile.children.cycles-pp.resched_curr
      0.31            -0.0        0.30        perf-profile.children.cycles-pp.kfree
      0.27            -0.0        0.25        perf-profile.children.cycles-pp.copyin
      0.06 ±  7%      -0.0        0.05 ±  8%  perf-profile.children.cycles-pp.native_smp_send_reschedule
      0.43 ±  2%      +0.0        0.46 ±  2%  perf-profile.children.cycles-pp._raw_spin_lock_bh
      0.28            +0.0        0.31 ±  2%  perf-profile.children.cycles-pp.available_idle_cpu
      0.44 ±  3%      +0.0        0.48        perf-profile.children.cycles-pp.perf_tp_event
      0.48            +0.0        0.52 ±  2%  perf-profile.children.cycles-pp.pick_next_entity
      0.40 ±  3%      +0.1        0.46 ±  2%  perf-profile.children.cycles-pp.__list_del_entry_valid
      2.17            +0.1        2.22        perf-profile.children.cycles-pp.sysvec_reschedule_ipi
      0.91            +0.1        0.97        perf-profile.children.cycles-pp.__slab_free
      2.40            +0.1        2.46        perf-profile.children.cycles-pp.update_load_avg
      0.71 ±  2%      +0.1        0.77        perf-profile.children.cycles-pp.perf_trace_sched_wakeup_template
      0.97            +0.1        1.04        perf-profile.children.cycles-pp.irqtime_account_irq
      0.40 ±  3%      +0.1        0.47 ±  2%  perf-profile.children.cycles-pp.skb_set_owner_w
      1.44            +0.1        1.50        perf-profile.children.cycles-pp.update_curr
      0.81 ±  2%      +0.1        0.88        perf-profile.children.cycles-pp.sock_wfree
      0.37 ±  5%      +0.1        0.44        perf-profile.children.cycles-pp.cpus_share_cache
      0.42 ±  5%      +0.1        0.50 ±  3%  perf-profile.children.cycles-pp.sock_def_write_space
      0.45 ±  6%      +0.1        0.53 ±  4%  perf-profile.children.cycles-pp.skb_release_data
      1.37            +0.1        1.45        perf-profile.children.cycles-pp.__check_object_size
      0.66 ±  2%      +0.1        0.74        perf-profile.children.cycles-pp.switch_mm_irqs_off
      0.97            +0.1        1.06        perf-profile.children.cycles-pp.tick_nohz_idle_exit
      0.99            +0.1        1.08        perf-profile.children.cycles-pp.select_task_rq_fair
      1.09 ±  2%      +0.1        1.18        perf-profile.children.cycles-pp.copy_user_generic_unrolled
      1.67 ±  2%      +0.1        1.76        perf-profile.children.cycles-pp.loopback_xmit
      1.35 ±  3%      +0.1        1.44        perf-profile.children.cycles-pp.__consume_stateless_skb
      1.78 ±  2%      +0.1        1.88        perf-profile.children.cycles-pp.dev_hard_start_xmit
      2.55            +0.1        2.64        perf-profile.children.cycles-pp.__dev_queue_xmit
      2.97            +0.1        3.07        perf-profile.children.cycles-pp.sock_alloc_send_pskb
      0.70 ±  2%      +0.1        0.80        perf-profile.children.cycles-pp.select_idle_sibling
      0.74 ±  3%      +0.1        0.84        perf-profile.children.cycles-pp.copyout
      1.11 ±  2%      +0.1        1.21        perf-profile.children.cycles-pp._copy_to_iter
      0.87 ±  3%      +0.1        0.97        perf-profile.children.cycles-pp.irqentry_enter
      3.21            +0.1        3.32        perf-profile.children.cycles-pp.dequeue_entity
      0.59 ±  2%      +0.1        0.69        perf-profile.children.cycles-pp.update_ts_time_stats
      0.59 ±  3%      +0.1        0.70        perf-profile.children.cycles-pp.nr_iowait_cpu
      3.52            +0.1        3.62        perf-profile.children.cycles-pp.dequeue_task_fair
      0.84 ±  3%      +0.1        0.96        perf-profile.children.cycles-pp.__ksize
      7.14            +0.1        7.27        perf-profile.children.cycles-pp.schedule
      2.01            +0.2        2.17        perf-profile.children.cycles-pp.set_next_entity
      2.01            +0.2        2.17        perf-profile.children.cycles-pp.enqueue_entity
      1.71 ±  2%      +0.2        1.90        perf-profile.children.cycles-pp.update_rq_clock
      7.82            +0.2        8.02        perf-profile.children.cycles-pp.schedule_timeout
      2.54            +0.2        2.76        perf-profile.children.cycles-pp.enqueue_task_fair
      2.63            +0.2        2.84        perf-profile.children.cycles-pp.ttwu_do_activate
      3.16            +0.2        3.39        perf-profile.children.cycles-pp.pick_next_task_fair
      3.70            +0.2        3.95        perf-profile.children.cycles-pp.pick_next_task
      9.06            +0.3        9.34        perf-profile.children.cycles-pp.__skb_wait_for_more_packets
      6.12            +0.4        6.48        perf-profile.children.cycles-pp.schedule_idle
     10.86            +0.4       11.26        perf-profile.children.cycles-pp.__skb_recv_udp
     12.90            +0.5       13.41        perf-profile.children.cycles-pp.__schedule
     18.19            +0.6       18.77        perf-profile.children.cycles-pp.__x64_sys_recvfrom
     18.01            +0.6       18.60        perf-profile.children.cycles-pp.__sys_recvfrom
     55.13            +0.6       55.74        perf-profile.children.cycles-pp.do_syscall_64
      8.11            +0.6        8.73        perf-profile.children.cycles-pp.try_to_wake_up
      8.30            +0.6        8.92        perf-profile.children.cycles-pp.autoremove_wake_function
     15.66            +0.6       16.31        perf-profile.children.cycles-pp.inet_recvmsg
     15.54            +0.7       16.20        perf-profile.children.cycles-pp.udp_recvmsg
     15.22            +0.7       15.89        perf-profile.children.cycles-pp.net_rx_action
     17.23            +0.7       17.92        perf-profile.children.cycles-pp.__local_bh_enable_ip
     16.94            +0.7       17.64        perf-profile.children.cycles-pp.do_softirq
     14.78            +0.7       15.48        perf-profile.children.cycles-pp.__napi_poll
     16.77            +0.7       17.48        perf-profile.children.cycles-pp.__softirqentry_text_start
      8.80            +0.7        9.52        perf-profile.children.cycles-pp.__wake_up_common
      9.09            +0.7        9.82        perf-profile.children.cycles-pp.__wake_up_common_lock
     14.59            +0.7       15.34        perf-profile.children.cycles-pp.process_backlog
     21.84            +0.8       22.60        perf-profile.children.cycles-pp.udp_send_skb
     21.43            +0.8       22.19        perf-profile.children.cycles-pp.ip_send_skb
     21.04            +0.8       21.81        perf-profile.children.cycles-pp.ip_output
     20.19            +0.8       20.98        perf-profile.children.cycles-pp.ip_finish_output2
      9.52            +0.8       10.31        perf-profile.children.cycles-pp.sock_def_readable
      9.89            +0.8       10.68        perf-profile.children.cycles-pp.__udp_enqueue_schedule_skb
     13.40            +0.8       14.23        perf-profile.children.cycles-pp.__netif_receive_skb_one_core
     12.90            +0.8       13.75        perf-profile.children.cycles-pp.ip_rcv
     11.09            +0.8       11.94        perf-profile.children.cycles-pp.udp_queue_rcv_one_skb
     12.30            +0.9       13.15        perf-profile.children.cycles-pp.ip_local_deliver_finish
     12.23            +0.9       13.09        perf-profile.children.cycles-pp.ip_protocol_deliver_rcu
     12.02            +0.9       12.88        perf-profile.children.cycles-pp.__udp4_lib_rcv
     11.16            +0.9       12.02        perf-profile.children.cycles-pp.udp_unicast_rcv_skb
     12.36            +0.9       13.22        perf-profile.children.cycles-pp.ip_local_deliver
     21.50            -0.5       20.98        perf-profile.self.cycles-pp.acpi_idle_do_entry
      1.08 ±  2%      -0.1        0.94        perf-profile.self.cycles-pp.udp_sendmsg
      0.77            -0.1        0.68        perf-profile.self.cycles-pp.syscall_return_via_sysret
      0.42 ±  4%      -0.1        0.36 ±  2%  perf-profile.self.cycles-pp.ip_route_output_key_hash_rcu
      0.53            -0.1        0.46        perf-profile.self.cycles-pp.process_backlog
      1.01 ±  2%      -0.1        0.96        perf-profile.self.cycles-pp.menu_select
      1.00            -0.0        0.96        perf-profile.self.cycles-pp.native_apic_msr_eoi_write
      0.96            -0.0        0.92        perf-profile.self.cycles-pp.native_sched_clock
      1.04            -0.0        1.00        perf-profile.self.cycles-pp.__switch_to
      1.31            -0.0        1.27        perf-profile.self.cycles-pp.native_irq_return_iret
      0.14 ±  4%      -0.0        0.10 ±  4%  perf-profile.self.cycles-pp.__cond_resched
      0.57            -0.0        0.54        perf-profile.self.cycles-pp.cpuidle_enter_state
      0.20 ±  5%      -0.0        0.16 ±  3%  perf-profile.self.cycles-pp.rcu_read_unlock_strict
      0.22 ±  4%      -0.0        0.19 ±  5%  perf-profile.self.cycles-pp.kmem_cache_free
      0.17 ±  4%      -0.0        0.14 ±  3%  perf-profile.self.cycles-pp._copy_from_iter_full
      0.10 ±  8%      -0.0        0.07 ±  5%  perf-profile.self.cycles-pp._copy_from_user
      0.14 ± 10%      -0.0        0.11 ±  3%  perf-profile.self.cycles-pp.ip_setup_cork
      0.22 ±  5%      -0.0        0.19        perf-profile.self.cycles-pp.import_single_range
      0.44 ±  3%      -0.0        0.41 ±  2%  perf-profile.self.cycles-pp.__ip_append_data
      0.32 ±  2%      -0.0        0.29 ±  2%  perf-profile.self.cycles-pp.kmem_cache_alloc_node
      0.10 ±  7%      -0.0        0.08 ±  4%  perf-profile.self.cycles-pp.__fdget
      0.29            -0.0        0.26        perf-profile.self.cycles-pp.__napi_poll
      0.49            -0.0        0.47 ±  2%  perf-profile.self.cycles-pp.__softirqentry_text_start
      0.40            -0.0        0.37        perf-profile.self.cycles-pp.net_rx_action
      0.23 ±  3%      -0.0        0.20 ±  3%  perf-profile.self.cycles-pp.ip_route_output_key_hash
      0.10 ±  3%      -0.0        0.08 ±  4%  perf-profile.self.cycles-pp.apparmor_socket_sendmsg
      0.46 ±  2%      -0.0        0.44 ±  2%  perf-profile.self.cycles-pp.___might_sleep
      0.32            -0.0        0.30 ±  2%  perf-profile.self.cycles-pp.copy_fpregs_to_fpstate
      0.30            -0.0        0.28        perf-profile.self.cycles-pp.kfree
      0.42            -0.0        0.40        perf-profile.self.cycles-pp.__wrgsbase_inactive
      0.27            -0.0        0.26        perf-profile.self.cycles-pp.security_socket_sendmsg
      0.11 ±  3%      -0.0        0.10 ±  5%  perf-profile.self.cycles-pp.security_socket_recvmsg
      0.10 ±  4%      -0.0        0.09 ±  4%  perf-profile.self.cycles-pp.xfrm_lookup_with_ifid
      0.07 ±  7%      -0.0        0.05        perf-profile.self.cycles-pp.rb_erase
      0.17 ±  4%      -0.0        0.15 ±  2%  perf-profile.self.cycles-pp.schedule
      0.18 ±  2%      -0.0        0.17        perf-profile.self.cycles-pp.sched_clock_cpu
      0.06 ±  7%      -0.0        0.05 ±  7%  perf-profile.self.cycles-pp.native_smp_send_reschedule
      0.19            -0.0        0.18        perf-profile.self.cycles-pp.__x64_sys_sendto
      0.14            -0.0        0.13        perf-profile.self.cycles-pp.tick_nohz_next_event
      0.13 ±  2%      +0.0        0.15 ±  3%  perf-profile.self.cycles-pp.perf_trace_sched_wakeup_template
      0.81            +0.0        0.84        perf-profile.self.cycles-pp.__update_load_avg_cfs_rq
      0.38            +0.0        0.40 ±  2%  perf-profile.self.cycles-pp.pick_next_task
      0.19 ± 18%      +0.0        0.22 ±  4%  perf-profile.self.cycles-pp.poll_idle
      0.26 ±  2%      +0.0        0.29        perf-profile.self.cycles-pp.available_idle_cpu
      0.41 ±  2%      +0.0        0.45        perf-profile.self.cycles-pp._raw_spin_lock_bh
      0.54 ±  2%      +0.0        0.58        perf-profile.self.cycles-pp.enqueue_task_fair
      0.46            +0.0        0.50 ±  2%  perf-profile.self.cycles-pp.pick_next_entity
      0.33 ±  3%      +0.0        0.37        perf-profile.self.cycles-pp.perf_tp_event
      0.38 ±  3%      +0.1        0.43 ±  2%  perf-profile.self.cycles-pp.__list_del_entry_valid
      0.90            +0.1        0.95        perf-profile.self.cycles-pp.__slab_free
      0.90 ±  2%      +0.1        0.95        perf-profile.self.cycles-pp.update_load_avg
      1.53            +0.1        1.59        perf-profile.self.cycles-pp.__schedule
      0.41 ±  4%      +0.1        0.47        perf-profile.self.cycles-pp.sock_def_readable
      0.40 ±  3%      +0.1        0.46 ±  2%  perf-profile.self.cycles-pp.skb_set_owner_w
      0.37 ±  4%      +0.1        0.44        perf-profile.self.cycles-pp.cpus_share_cache
      0.76 ±  4%      +0.1        0.83        perf-profile.self.cycles-pp.update_curr
      0.42 ±  5%      +0.1        0.49 ±  2%  perf-profile.self.cycles-pp.sock_def_write_space
      0.68 ±  2%      +0.1        0.76        perf-profile.self.cycles-pp.schedule_timeout
      0.60 ±  3%      +0.1        0.67        perf-profile.self.cycles-pp.irqtime_account_irq
      0.44 ±  6%      +0.1        0.52 ±  3%  perf-profile.self.cycles-pp.skb_release_data
      0.86 ±  2%      +0.1        0.94        perf-profile.self.cycles-pp.__skb_recv_udp
      0.65 ±  2%      +0.1        0.73        perf-profile.self.cycles-pp.switch_mm_irqs_off
      0.54 ±  4%      +0.1        0.62 ±  2%  perf-profile.self.cycles-pp.udp_queue_rcv_one_skb
      0.83 ±  2%      +0.1        0.92        perf-profile.self.cycles-pp.__check_object_size
      1.04 ±  3%      +0.1        1.13        perf-profile.self.cycles-pp.copy_user_generic_unrolled
      0.50 ±  4%      +0.1        0.59        perf-profile.self.cycles-pp.__wake_up_common
      0.58 ±  5%      +0.1        0.68        perf-profile.self.cycles-pp.irqentry_enter
      0.93            +0.1        1.04        perf-profile.self.cycles-pp.enqueue_entity
      0.82 ±  2%      +0.1        0.92        perf-profile.self.cycles-pp.__skb_wait_for_more_packets
      0.58 ±  3%      +0.1        0.68        perf-profile.self.cycles-pp.nr_iowait_cpu
      0.82 ±  3%      +0.1        0.94        perf-profile.self.cycles-pp.__ksize
      0.75 ±  4%      +0.1        0.87        perf-profile.self.cycles-pp.try_to_wake_up
      1.19 ±  2%      +0.2        1.39        perf-profile.self.cycles-pp.set_next_entity
      1.24 ±  4%      +0.2        1.45        perf-profile.self.cycles-pp.update_rq_clock


                                                                                
                               netperf.Throughput_tps                           
                                                                                
  90000 +-------------------------------------------------------------------+   
        |         .+.                                                       |   
  80000 |.+.+.++.+   +.+.++.+.+.+.+.++.+.+.+.+.++   +.+.+  +.+.+.+.+.++.+.+.|   
  70000 |-O O OO O O O O OO O O O O O  O O O O O: O : O : O: O   O O OO     |   
        |                                       :   :   :  :                |   
  60000 |-+                                      :  :    : :                |   
  50000 |-+                                      : :     : :                |   
        |                                        : :     : :                |   
  40000 |-+                                      : :     : :                |   
  30000 |-+                                      : :     ::                 |   
        |                                        : :     ::                 |   
  20000 |-+                                       ::      :                 |   
  10000 |-+                                       :       :                 |   
        |                                         :       :                 |   
      0 +-------------------------------------------------------------------+   
                                                                                
                                                                                                                                                                
                            netperf.Throughput_total_tps                        
                                                                                
  6e+06 +-------------------------------------------------------------------+   
        |                                                                   |   
  5e+06 |.+.+.++.+.+.+.+.++.+.+.+.+.++.+.+.+.+.++   +.+.+  +.+.+.+.+.++.+.+.|   
        | O O OO O O O O OO O O O O OO O O O O O: O : O : O: O O O O OO     |   
        |                                       :   :   :  :                |   
  4e+06 |-+                                      :  :    : :                |   
        |                                        : :     : :                |   
  3e+06 |-+                                      : :     : :                |   
        |                                        : :     : :                |   
  2e+06 |-+                                      : :     ::                 |   
        |                                        : :     ::                 |   
        |                                         ::      :                 |   
  1e+06 |-+                                       :       :                 |   
        |                                         :       :                 |   
      0 +-------------------------------------------------------------------+   
                                                                                
                                                                                                                                                                
                                   netperf.workload                             
                                                                                
  1.6e+09 +-----------------------------------------------------------------+   
          |.+.++.+.+  +.+.+.+.++.+.+.+.++.+.+.++.+   +.++   +.+.++.+.+.++.+.|   
  1.4e+09 |-O OO O O OO O O O OO O O O OO O O OO : O : O: O : O  O O O O    |   
  1.2e+09 |-+                                    :   :  :   :               |   
          |                                      :   :  :   :               |   
    1e+09 |-+                                     : :    : :                |   
          |                                       : :    : :                |   
    8e+08 |-+                                     : :    : :                |   
          |                                       : :    : :                |   
    6e+08 |-+                                     : :    : :                |   
    4e+08 |-+                                     : :    : :                |   
          |                                        :      :                 |   
    2e+08 |-+                                      :      :                 |   
          |                                        :      :                 |   
        0 +-----------------------------------------------------------------+   
                                                                                
                                                                                
[*] 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.


---
0DAY/LKP+ Test Infrastructure                   Open Source Technology Center
https://lists.01.org/hyperkitty/list/lkp@lists.01.org       Intel Corporation

Thanks,
Oliver Sang


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