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Date: Tue, 11 Dec 2018 17:16:31 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: Masami Hiramatsu <mhiramat@...nel.org>,
LKML <linux-kernel@...r.kernel.org>,
Linus Torvalds <torvalds@...ux-foundation.org>, lkp@...org
Subject: [LKP] [function_graph] 8114865ff8: netperf.Throughput_tps -1.1%
regression
Greeting,
FYI, we noticed a -1.1% regression of netperf.Throughput_tps due to commit:
commit: 8114865ff82e200b383e46821c25cb0625b842b5 ("function_graph: Create function_graph_enter() to consolidate architecture code")
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_CRR
ucode: 0x25
cpufreq_governor: performance
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-7.2/200%/debian-x86_64-2018-04-03.cgz/300s/lkp-hsw-d01/TCP_CRR/netperf/0x25
commit:
v4.20-rc3
8114865ff8 ("function_graph: Create function_graph_enter() to consolidate architecture code")
v4.20-rc3 8114865ff82e200b383e46821c
---------------- --------------------------
fail:runs %reproduction fail:runs
| | |
2:5 -40% :4 dmesg.WARNING:at#for_ip_swapgs_restore_regs_and_return_to_usermode/0x
2:5 -40% :4 dmesg.WARNING:stack_recursion
:5 20% 1:4 kmsg.drm:drm_atomic_helper_wait_for_dependencies[drm_kms_helper]]*ERROR*[CONNECTOR:#:VGA-#]flip_done_timed_out
:5 20% 1:4 kmsg.drm:drm_atomic_helper_wait_for_dependencies[drm_kms_helper]]*ERROR*[CRTC:#:pipe_A]flip_done_timed_out
:5 20% 1:4 kmsg.drm:drm_atomic_helper_wait_for_dependencies[drm_kms_helper]]*ERROR*[PLANE:#:primary_A]flip_done_timed_out
:5 20% 1:4 kmsg.drm:drm_atomic_helper_wait_for_flip_done[drm_kms_helper]]*ERROR*[CRTC:#:pipe_A]flip_done_timed_out
1:5 -10% 1:4 perf-profile.calltrace.cycles-pp.dequeue_entity.dequeue_task_fair.__sched_text_start.schedule.schedule_timeout
26:5 -93% 21:4 perf-profile.children.cycles-pp.schedule_timeout
0:5 -1% 0:4 perf-profile.self.cycles-pp.schedule_timeout
%stddev %change %stddev
\ | \
131277 -1.1% 129833 netperf.Throughput_total_tps
8204 -1.1% 8114 netperf.Throughput_tps
104.96 -1.6% 103.25 netperf.time.user_time
39321448 -1.1% 38880992 netperf.time.voluntary_context_switches
39383220 -1.1% 38949992 netperf.workload
327.02 -100.0% 0.00 uptime.boot
179.66 ± 8% -100.0% 0.00 uptime.idle
4174 ± 10% +12.4% 4692 ± 12% slabinfo.anon_vma.active_objs
4174 ± 10% +12.4% 4692 ± 12% slabinfo.anon_vma.num_objs
39.00 +229.5% 128.50 ± 27% slabinfo.buffer_head.active_objs
39.00 +229.5% 128.50 ± 27% slabinfo.buffer_head.num_objs
0.43 ± 9% -19.6% 0.34 ± 13% sched_debug.cfs_rq:/.nr_running.stddev
12140 ±114% +330.4% 52248 ± 73% sched_debug.cpu.avg_idle.min
0.88 ± 8% +24.1% 1.09 ± 4% sched_debug.cpu.clock.stddev
0.88 ± 8% +24.1% 1.09 ± 4% sched_debug.cpu.clock_task.stddev
163.75 ± 2% +6.7% 174.67 ± 4% sched_debug.cpu.cpu_load[0].avg
238.17 ± 3% +24.7% 296.96 ± 17% sched_debug.cpu.cpu_load[0].max
215.03 ± 2% +16.7% 251.04 ± 8% sched_debug.cpu.cpu_load[1].max
20.65 ± 12% +19.2% 24.61 ± 7% sched_debug.cpu.cpu_load[2].stddev
62804 +2.0% 64053 proc-vmstat.nr_active_anon
1.00 +10950.0% 110.50 ± 73% proc-vmstat.nr_active_file
61258 +2.0% 62489 proc-vmstat.nr_anon_pages
23.00 +303.3% 92.75 ± 38% proc-vmstat.nr_inactive_file
3854 +8.2% 4170 proc-vmstat.nr_kernel_stack
9474 +2.0% 9666 proc-vmstat.nr_slab_reclaimable
8753 +2.7% 8988 proc-vmstat.nr_slab_unreclaimable
62807 +2.0% 64055 proc-vmstat.nr_zone_active_anon
1.00 +10950.0% 110.50 ± 73% proc-vmstat.nr_zone_active_file
23.00 +303.3% 92.75 ± 38% proc-vmstat.nr_zone_inactive_file
461366 +4.9% 483771 ± 2% proc-vmstat.numa_hit
461366 +4.9% 483771 ± 2% proc-vmstat.numa_local
8.459e+11 -1.3% 8.347e+11 perf-stat.branch-instructions
81655384 -1.1% 80758043 perf-stat.context-switches
2.04 +1.3% 2.07 perf-stat.cpi
56426 ± 3% -8.7% 51533 ± 5% perf-stat.cpu-migrations
0.10 ± 2% +0.0 0.10 ± 3% perf-stat.dTLB-store-miss-rate%
8.433e+11 -1.1% 8.337e+11 perf-stat.dTLB-stores
75.15 +1.9 77.05 perf-stat.iTLB-load-miss-rate%
8.967e+08 -10.2% 8.056e+08 perf-stat.iTLB-loads
4.324e+12 -1.3% 4.267e+12 perf-stat.instructions
0.49 -1.2% 0.48 perf-stat.ipc
390422 +0.8% 393664 perf-stat.minor-faults
17227761 ± 3% +15.0% 19812916 ± 2% perf-stat.node-stores
390422 +0.8% 393654 perf-stat.page-faults
1.74 ± 15% -0.3 1.43 ± 2% perf-profile.calltrace.cycles-pp.security_sock_rcv_skb.sk_filter_trim_cap.tcp_filter.tcp_v4_rcv.ip_local_deliver_finish
1.53 ± 6% -0.2 1.35 ± 2% perf-profile.calltrace.cycles-pp.selinux_socket_sock_rcv_skb.security_sock_rcv_skb.sk_filter_trim_cap.tcp_filter.tcp_v4_rcv
1.06 ± 3% -0.1 0.99 ± 2% perf-profile.calltrace.cycles-pp.tcp_send_fin.tcp_close.inet_release.__sock_release.sock_close
2.24 +0.1 2.30 perf-profile.calltrace.cycles-pp.tcp_rcv_established.tcp_v4_do_rcv.__release_sock.release_sock.tcp_sendmsg
0.88 ± 2% +0.1 0.95 ± 5% perf-profile.calltrace.cycles-pp.__ip_queue_xmit.__tcp_transmit_skb.tcp_fin.tcp_data_queue.tcp_rcv_state_process
1.08 ± 2% +0.1 1.17 ± 4% perf-profile.calltrace.cycles-pp.__tcp_transmit_skb.tcp_fin.tcp_data_queue.tcp_rcv_state_process.tcp_v4_do_rcv
2.54 +0.1 2.65 perf-profile.calltrace.cycles-pp.__release_sock.release_sock.tcp_sendmsg.sock_sendmsg.__sys_sendto
2.68 ± 2% +0.1 2.80 perf-profile.calltrace.cycles-pp.release_sock.tcp_sendmsg.sock_sendmsg.__sys_sendto.__x64_sys_sendto
3.03 ± 2% +0.1 3.16 perf-profile.calltrace.cycles-pp.tcp_fin.tcp_data_queue.tcp_rcv_state_process.tcp_v4_do_rcv.tcp_v4_rcv
0.71 ± 7% +0.1 0.84 ± 14% perf-profile.calltrace.cycles-pp.ip_output.tcp_v4_send_synack.tcp_conn_request.tcp_rcv_state_process.tcp_v4_do_rcv
3.19 ± 2% +0.2 3.36 perf-profile.calltrace.cycles-pp.tcp_data_queue.tcp_rcv_state_process.tcp_v4_do_rcv.tcp_v4_rcv.ip_local_deliver_finish
0.33 ± 82% +0.3 0.63 ± 13% perf-profile.calltrace.cycles-pp.ret_from_fork
0.33 ± 82% +0.3 0.63 ± 13% perf-profile.calltrace.cycles-pp.kthread.ret_from_fork
12.33 +0.4 12.77 ± 2% perf-profile.calltrace.cycles-pp.tcp_v4_connect.__inet_stream_connect.inet_stream_connect.__sys_connect.__x64_sys_connect
30.28 +0.5 30.73 perf-profile.calltrace.cycles-pp.ip_local_deliver.ip_rcv.__netif_receive_skb_one_core.process_backlog.net_rx_action
7.34 ± 2% +0.5 7.79 ± 2% perf-profile.calltrace.cycles-pp.ip_output.__ip_queue_xmit.__tcp_transmit_skb.tcp_connect.tcp_v4_connect
32.67 +0.5 33.13 perf-profile.calltrace.cycles-pp.__netif_receive_skb_one_core.process_backlog.net_rx_action.__softirqentry_text_start.do_softirq_own_stack
7.21 ± 2% +0.5 7.69 ± 3% perf-profile.calltrace.cycles-pp.ip_finish_output2.ip_output.__ip_queue_xmit.__tcp_transmit_skb.tcp_connect
8.80 ± 2% +0.5 9.28 perf-profile.calltrace.cycles-pp.tcp_rcv_state_process.tcp_v4_do_rcv.tcp_v4_rcv.ip_local_deliver_finish.ip_local_deliver
10.34 +0.5 10.88 ± 3% perf-profile.calltrace.cycles-pp.tcp_connect.tcp_v4_connect.__inet_stream_connect.inet_stream_connect.__sys_connect
34.75 +0.5 35.30 perf-profile.calltrace.cycles-pp.__softirqentry_text_start.do_softirq_own_stack.do_softirq.__local_bh_enable_ip.ip_finish_output2
34.88 +0.6 35.43 perf-profile.calltrace.cycles-pp.do_softirq_own_stack.do_softirq.__local_bh_enable_ip.ip_finish_output2.ip_output
16.15 +0.6 16.70 ± 2% perf-profile.calltrace.cycles-pp.tcp_v4_do_rcv.tcp_v4_rcv.ip_local_deliver_finish.ip_local_deliver.ip_rcv
8.86 ± 2% +0.6 9.44 ± 2% perf-profile.calltrace.cycles-pp.__tcp_transmit_skb.tcp_connect.tcp_v4_connect.__inet_stream_connect.inet_stream_connect
35.25 +0.6 35.84 perf-profile.calltrace.cycles-pp.do_softirq.__local_bh_enable_ip.ip_finish_output2.ip_output.__ip_queue_xmit
34.18 +0.6 34.78 perf-profile.calltrace.cycles-pp.net_rx_action.__softirqentry_text_start.do_softirq_own_stack.do_softirq.__local_bh_enable_ip
8.31 ± 2% +0.6 8.92 ± 2% perf-profile.calltrace.cycles-pp.__ip_queue_xmit.__tcp_transmit_skb.tcp_connect.tcp_v4_connect.__inet_stream_connect
35.35 +0.7 36.01 perf-profile.calltrace.cycles-pp.__local_bh_enable_ip.ip_finish_output2.ip_output.__ip_queue_xmit.__tcp_transmit_skb
2.33 ± 5% -0.2 2.10 perf-profile.children.cycles-pp.security_sock_rcv_skb
2.21 ± 5% -0.2 1.99 perf-profile.children.cycles-pp.selinux_socket_sock_rcv_skb
2.51 ± 5% -0.2 2.30 perf-profile.children.cycles-pp.sk_filter_trim_cap
1.59 ± 6% -0.2 1.42 perf-profile.children.cycles-pp.selinux_sock_rcv_skb_compat
1.91 ± 6% -0.2 1.75 perf-profile.children.cycles-pp._raw_spin_lock
1.49 ± 4% -0.1 1.36 ± 2% perf-profile.children.cycles-pp.__kfree_skb
0.61 ± 9% -0.1 0.50 ± 9% perf-profile.children.cycles-pp.sock_def_wakeup
0.97 ± 3% -0.1 0.88 ± 6% perf-profile.children.cycles-pp.avc_has_perm
0.56 ± 6% -0.1 0.47 ± 4% perf-profile.children.cycles-pp.__x64_sys_close
0.37 ± 10% -0.1 0.29 ± 12% perf-profile.children.cycles-pp._copy_from_iter_full
0.62 ± 3% -0.1 0.54 ± 3% perf-profile.children.cycles-pp.__fget_light
0.26 ± 13% -0.1 0.19 ± 9% perf-profile.children.cycles-pp.security_file_alloc
0.42 ± 2% -0.1 0.35 ± 13% perf-profile.children.cycles-pp.copy_user_generic_unrolled
0.23 ± 11% -0.1 0.16 ± 9% perf-profile.children.cycles-pp.selinux_file_alloc_security
1.06 ± 3% -0.1 1.00 ± 2% perf-profile.children.cycles-pp.tcp_send_fin
0.11 ± 18% -0.1 0.05 ± 58% perf-profile.children.cycles-pp.sel_netnode_find
0.13 ± 16% -0.1 0.07 ± 6% perf-profile.children.cycles-pp.sel_netnode_sid
0.39 ± 6% -0.1 0.34 ± 4% perf-profile.children.cycles-pp.skb_release_data
0.34 ± 10% -0.1 0.29 ± 11% perf-profile.children.cycles-pp.filp_close
0.20 ± 5% -0.0 0.15 ± 12% perf-profile.children.cycles-pp.tcp_update_skb_after_send
0.36 ± 7% -0.0 0.32 ± 5% perf-profile.children.cycles-pp.__update_load_avg_se
0.12 ± 14% -0.0 0.09 ± 16% perf-profile.children.cycles-pp.__tcp_ack_snd_check
0.15 ± 14% -0.0 0.11 ± 9% perf-profile.children.cycles-pp.init_timer_key
0.15 ± 4% -0.0 0.12 ± 10% perf-profile.children.cycles-pp.remove_wait_queue
0.08 ± 17% -0.0 0.06 perf-profile.children.cycles-pp.ip_build_and_send_pkt
0.15 ± 6% +0.0 0.17 ± 3% perf-profile.children.cycles-pp.__usecs_to_jiffies
0.04 ± 51% +0.0 0.07 ± 6% perf-profile.children.cycles-pp.find_exception
0.09 ± 11% +0.0 0.11 ± 17% perf-profile.children.cycles-pp.tcp_newly_delivered
0.09 ± 15% +0.0 0.11 ± 7% perf-profile.children.cycles-pp.xfrm_lookup_with_ifid
0.12 ± 15% +0.0 0.15 ± 11% perf-profile.children.cycles-pp.get_nohz_timer_target
0.17 ± 11% +0.0 0.20 ± 11% perf-profile.children.cycles-pp.tcp_md5_do_lookup
0.02 ±123% +0.0 0.06 ± 16% perf-profile.children.cycles-pp.security_sk_classify_flow
0.08 ± 21% +0.0 0.11 ± 4% perf-profile.children.cycles-pp._raw_spin_trylock
0.04 ± 83% +0.0 0.08 ± 14% perf-profile.children.cycles-pp.activate_task
0.05 ± 54% +0.0 0.09 ± 24% perf-profile.children.cycles-pp.tcp_urg
0.19 ± 8% +0.0 0.23 ± 8% perf-profile.children.cycles-pp.tcp_rearm_rto
0.01 ±200% +0.0 0.06 ± 9% perf-profile.children.cycles-pp.skb_free_head
0.10 ± 9% +0.0 0.15 ± 8% perf-profile.children.cycles-pp.xfrm_lookup_route
0.39 ± 5% +0.1 0.44 ± 8% perf-profile.children.cycles-pp.ip_rcv_core
0.14 ± 19% +0.1 0.19 ± 22% perf-profile.children.cycles-pp.__inet_lookup_listener
0.01 ±200% +0.1 0.06 ± 20% perf-profile.children.cycles-pp.blkcg_maybe_throttle_current
0.00 +0.1 0.05 ± 8% perf-profile.children.cycles-pp.ip_mc_drop_socket
0.58 ± 4% +0.1 0.64 ± 3% perf-profile.children.cycles-pp.sk_prot_alloc
0.60 ± 4% +0.1 0.66 ± 4% perf-profile.children.cycles-pp.__might_sleep
0.15 ± 25% +0.1 0.21 ± 20% perf-profile.children.cycles-pp.eth_type_trans
1.13 ± 2% +0.1 1.21 ± 2% perf-profile.children.cycles-pp.inet_csk_destroy_sock
0.78 ± 2% +0.1 0.87 ± 8% perf-profile.children.cycles-pp.tcp_mstamp_refresh
0.52 ± 8% +0.1 0.63 ± 13% perf-profile.children.cycles-pp.kthread
0.52 ± 8% +0.1 0.64 ± 13% perf-profile.children.cycles-pp.ret_from_fork
0.56 ± 11% +0.1 0.68 ± 6% perf-profile.children.cycles-pp.ip_finish_output
3.44 +0.1 3.57 perf-profile.children.cycles-pp.tcp_fin
4.81 +0.1 4.95 perf-profile.children.cycles-pp.tcp_data_queue
12.35 +0.4 12.78 ± 2% perf-profile.children.cycles-pp.tcp_v4_connect
32.75 +0.5 33.20 perf-profile.children.cycles-pp.__netif_receive_skb_one_core
10.35 +0.5 10.89 ± 3% perf-profile.children.cycles-pp.tcp_connect
34.90 +0.6 35.45 perf-profile.children.cycles-pp.do_softirq_own_stack
34.29 +0.6 34.86 perf-profile.children.cycles-pp.net_rx_action
45.59 +0.6 46.19 perf-profile.children.cycles-pp.__tcp_transmit_skb
35.37 +0.6 35.99 perf-profile.children.cycles-pp.__softirqentry_text_start
42.97 +0.7 43.69 perf-profile.children.cycles-pp.__ip_queue_xmit
35.89 +0.7 36.62 perf-profile.children.cycles-pp.__local_bh_enable_ip
41.33 +0.8 42.10 perf-profile.children.cycles-pp.ip_output
39.17 +0.8 39.94 perf-profile.children.cycles-pp.ip_finish_output2
0.88 ± 4% -0.1 0.74 ± 3% perf-profile.self.cycles-pp.tcp_write_xmit
0.61 ± 2% -0.1 0.54 ± 3% perf-profile.self.cycles-pp.__fget_light
0.23 ± 5% -0.1 0.15 ± 18% perf-profile.self.cycles-pp.tcp_v4_connect
0.93 ± 3% -0.1 0.86 ± 6% perf-profile.self.cycles-pp.avc_has_perm
0.41 ± 2% -0.1 0.34 ± 12% perf-profile.self.cycles-pp.copy_user_generic_unrolled
0.11 ± 18% -0.1 0.05 ± 58% perf-profile.self.cycles-pp.sel_netnode_find
0.39 ± 8% -0.1 0.32 ± 6% perf-profile.self.cycles-pp.selinux_ip_postroute
0.11 ± 24% -0.1 0.05 ± 58% perf-profile.self.cycles-pp.security_d_instantiate
0.16 ± 7% -0.1 0.11 ± 13% perf-profile.self.cycles-pp.tcp_send_fin
0.35 ± 6% -0.1 0.30 ± 6% perf-profile.self.cycles-pp.__update_load_avg_se
0.10 ± 15% -0.0 0.06 ± 58% perf-profile.self.cycles-pp.__x64_sys_close
0.07 ± 16% -0.0 0.03 ±100% perf-profile.self.cycles-pp.inet_release
0.35 ± 7% -0.0 0.31 ± 2% perf-profile.self.cycles-pp.tcp_parse_options
0.09 ± 15% -0.0 0.05 ± 58% perf-profile.self.cycles-pp.__sys_socket
0.13 ± 8% -0.0 0.10 ± 17% perf-profile.self.cycles-pp.sk_stream_alloc_skb
0.12 ± 13% -0.0 0.08 ± 19% perf-profile.self.cycles-pp.__tcp_ack_snd_check
0.14 ± 12% -0.0 0.10 ± 12% perf-profile.self.cycles-pp.skb_release_all
0.16 ± 10% -0.0 0.13 ± 3% perf-profile.self.cycles-pp.__inet_bind
0.18 ± 8% -0.0 0.15 ± 5% perf-profile.self.cycles-pp.sk_clone_lock
0.16 ± 5% -0.0 0.14 ± 11% perf-profile.self.cycles-pp.__wake_up_common
0.09 ± 8% +0.0 0.11 ± 11% perf-profile.self.cycles-pp.ip_local_out
0.08 ± 12% +0.0 0.11 ± 9% perf-profile.self.cycles-pp.xfrm_lookup_with_ifid
0.11 ± 8% +0.0 0.14 ± 8% perf-profile.self.cycles-pp.__usecs_to_jiffies
0.16 ± 10% +0.0 0.19 ± 4% perf-profile.self.cycles-pp.tcp_rearm_rto
0.07 ± 6% +0.0 0.11 ± 14% perf-profile.self.cycles-pp.__dentry_kill
0.24 ± 7% +0.0 0.28 ± 6% perf-profile.self.cycles-pp.tcp_ack_update_rtt
0.08 ± 12% +0.0 0.11 ± 15% perf-profile.self.cycles-pp.tcp_newly_delivered
0.14 ± 16% +0.0 0.17 ± 13% perf-profile.self.cycles-pp.skb_push
0.06 ± 54% +0.0 0.10 ± 11% perf-profile.self.cycles-pp._raw_spin_unlock_bh
0.08 ± 11% +0.0 0.12 ± 17% perf-profile.self.cycles-pp.tcp_init_transfer
0.07 ± 23% +0.0 0.11 ± 4% perf-profile.self.cycles-pp._raw_spin_trylock
0.14 ± 13% +0.0 0.18 ± 9% perf-profile.self.cycles-pp.account_entity_dequeue
0.01 ±200% +0.0 0.06 ± 9% perf-profile.self.cycles-pp.skb_free_head
0.38 ± 5% +0.1 0.43 ± 7% perf-profile.self.cycles-pp.ip_rcv_core
0.06 ± 12% +0.1 0.11 ± 25% perf-profile.self.cycles-pp.tcp_filter
0.14 ± 19% +0.1 0.19 ± 22% perf-profile.self.cycles-pp.__inet_lookup_listener
0.00 +0.1 0.05 ± 8% perf-profile.self.cycles-pp.ip_mc_drop_socket
0.10 ± 26% +0.1 0.15 ± 11% perf-profile.self.cycles-pp.tcp_make_synack
0.03 ± 82% +0.1 0.09 ± 24% perf-profile.self.cycles-pp.tcp_urg
0.51 ± 6% +0.1 0.57 ± 3% perf-profile.self.cycles-pp.__might_sleep
0.14 ± 28% +0.1 0.21 ± 20% perf-profile.self.cycles-pp.eth_type_trans
0.54 ± 5% +0.1 0.61 ± 4% perf-profile.self.cycles-pp.__kmalloc_node_track_caller
0.44 ± 5% +0.1 0.51 ± 4% perf-profile.self.cycles-pp.enqueue_to_backlog
0.45 ± 10% +0.1 0.53 perf-profile.self.cycles-pp.net_rx_action
0.28 ± 8% +0.1 0.36 ± 6% perf-profile.self.cycles-pp.ip_local_deliver_finish
0.70 ± 7% +0.1 0.79 ± 6% perf-profile.self.cycles-pp.__dev_queue_xmit
0.52 ± 4% +0.1 0.64 ± 9% perf-profile.self.cycles-pp.mod_timer
1.54 ± 3% +0.1 1.67 ± 3% perf-profile.self.cycles-pp.__tcp_transmit_skb
0.28 ± 5% +0.1 0.41 ± 8% perf-profile.self.cycles-pp.ip_finish_output
0.68 ± 5% +0.1 0.83 ± 4% perf-profile.self.cycles-pp.__local_bh_enable_ip
0.22 ± 10% +0.3 0.49 ± 3% perf-profile.self.cycles-pp.dev_hard_start_xmit
netperf.time.voluntary_context_switches
4e+07 O-+O-O--O--O-O----O--O------------O--O--O-O--O--O-O--O-O--O-------+
| O O |
3.5e+07 +-+ |
3e+07 +-+ |
| |
2.5e+07 +-+ |
| |
2e+07 +-+ |
| |
1.5e+07 +-+ |
1e+07 +-+ |
| |
5e+06 +-+ |
| |
0 +-+-------------O-------O----O------------------------------------+
[*] 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
View attachment "config-4.20.0-rc3-00001-g8114865" of type "text/plain" (168537 bytes)
View attachment "job-script" of type "text/plain" (7503 bytes)
View attachment "job.yaml" of type "text/plain" (5059 bytes)
View attachment "reproduce" of type "text/plain" (1093 bytes)
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