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Message-ID: <202512112119.5b9829a-lkp@intel.com>
Date: Thu, 11 Dec 2025 22:31:16 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Eric Dumazet <edumazet@...gle.com>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>, <linux-kernel@...r.kernel.org>,
Paolo Abeni <pabeni@...hat.com>, Jason Xing <kerneljasonxing@...il.com>,
Kuniyuki Iwashima <kuniyu@...gle.com>, <netdev@...r.kernel.org>,
<oliver.sang@...el.com>
Subject: [linus:master] [net] 5628f3fe3b:
sockperf.throughput.UDP.msg_per_sec 20.1% regression
Hello,
kernel test robot noticed a 20.1% regression of sockperf.throughput.UDP.msg_per_sec on:
commit: 5628f3fe3b16114e8424bbfcf0594caef8958a06 ("net: add NUMA awareness to skb_attempt_defer_free()")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
[still regression on linus/master cb015814f8b6eebcbb8e46e111d108892c5e6821]
[still regression on linux-next/master c75caf76ed86bbc15a72808f48f8df1608a0886c]
testcase: sockperf
config: x86_64-rhel-9.4
compiler: gcc-14
test machine: 256 threads 2 sockets GENUINE INTEL(R) XEON(R) (Sierra Forest) with 128G memory
parameters:
runtime: 600s
cluster: cs-localhost
msg_size: 1472b
cpufreq_governor: performance
In addition to that, the commit also has significant impact on the following tests:
+------------------+---------------------------------------------------------------------------------+
| testcase: change | netperf: netperf.Throughput_Mbps 6.0% regression |
| test machine | 256 threads 2 sockets GENUINE INTEL(R) XEON(R) (Sierra Forest) with 128G memory |
| test parameters | cluster=cs-localhost |
| | cpufreq_governor=performance |
| | ip=ipv4 |
| | nr_threads=1 |
| | runtime=300s |
| | test=UDP_STREAM |
+------------------+---------------------------------------------------------------------------------+
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@...el.com>
| Closes: https://lore.kernel.org/oe-lkp/202512112119.5b9829a-lkp@intel.com
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20251211/202512112119.5b9829a-lkp@intel.com
=========================================================================================
cluster/compiler/cpufreq_governor/kconfig/msg_size/rootfs/runtime/tbox_group/testcase:
cs-localhost/gcc-14/performance/x86_64-rhel-9.4/1472b/debian-13-x86_64-20250902.cgz/600s/lkp-srf-2sp1/sockperf
commit:
844c9db7f7 ("net: use llist for sd->defer_list")
5628f3fe3b ("net: add NUMA awareness to skb_attempt_defer_free()")
844c9db7f7f5fe1b 5628f3fe3b16114e8424bbfcf05
---------------- ---------------------------
%stddev %change %stddev
\ | \
0.10 +0.0 0.12 mpstat.cpu.all.soft%
16915992 ± 6% -16.0% 14216230 ± 6% turbostat.IRQ
207555 +4.0% 215887 vmstat.system.cs
28663 ± 6% -15.2% 24304 ± 6% vmstat.system.in
11048577 -1.6% 10873254 proc-vmstat.numa_hit
10782437 -1.6% 10607299 proc-vmstat.numa_local
75337098 -1.9% 73920567 proc-vmstat.pgalloc_normal
75257799 -1.9% 73843141 proc-vmstat.pgfree
2564 -2.0% 2514 sockperf.throughput.TCP.BandWidth_MBps
1826630 -2.0% 1790940 sockperf.throughput.TCP.msg_per_sec
941.44 -20.1% 751.96 sockperf.throughput.UDP.BandWidth_MBps
670636 -20.1% 535658 sockperf.throughput.UDP.msg_per_sec
6259 ± 3% +44.0% 9013 ± 12% sockperf.time.involuntary_context_switches
66.00 -3.0% 64.00 sockperf.time.percent_of_cpu_this_job_got
7.698e+08 +3.3% 7.955e+08 perf-stat.i.branch-instructions
208310 +4.0% 216675 perf-stat.i.context-switches
298.79 +6.0% 316.62 perf-stat.i.cpu-migrations
3.92e+09 +4.1% 4.081e+09 perf-stat.i.instructions
0.79 +3.9% 0.83 perf-stat.i.ipc
0.68 ± 3% +7.5% 0.73 perf-stat.i.metric.K/sec
0.11 -4.4% 0.10 ± 2% perf-stat.overall.MPKI
1.19 -3.7% 1.14 perf-stat.overall.cpi
0.84 +3.8% 0.87 perf-stat.overall.ipc
7.681e+08 +3.3% 7.937e+08 perf-stat.ps.branch-instructions
207867 +4.0% 216199 perf-stat.ps.context-switches
298.39 +6.0% 316.29 perf-stat.ps.cpu-migrations
3.911e+09 +4.1% 4.072e+09 perf-stat.ps.instructions
2.419e+12 +4.1% 2.519e+12 perf-stat.total.instructions
1.51 ± 5% -0.5 1.06 ± 26% perf-profile.calltrace.cycles-pp.dev_hard_start_xmit.__dev_queue_xmit.ip_finish_output2.ip_output.ip_send_skb
1.46 ± 5% -0.4 1.03 ± 26% perf-profile.calltrace.cycles-pp.xmit_one.dev_hard_start_xmit.__dev_queue_xmit.ip_finish_output2.ip_output
1.26 ± 7% -0.4 0.88 ± 28% perf-profile.calltrace.cycles-pp.loopback_xmit.xmit_one.dev_hard_start_xmit.__dev_queue_xmit.ip_finish_output2
6.40 ± 4% -0.3 6.06 ± 2% perf-profile.calltrace.cycles-pp.udpv6_recvmsg.inet6_recvmsg.sock_recvmsg.__sys_recvfrom.__x64_sys_recvfrom
6.42 ± 4% -0.3 6.09 ± 2% perf-profile.calltrace.cycles-pp.inet6_recvmsg.sock_recvmsg.__sys_recvfrom.__x64_sys_recvfrom.do_syscall_64
1.06 ± 17% -0.3 0.75 ± 31% perf-profile.calltrace.cycles-pp.alloc_skb_with_frags.sock_alloc_send_pskb.__ip_append_data.ip_make_skb.udp_sendmsg
2.37 ± 6% -0.3 2.06 ± 3% perf-profile.calltrace.cycles-pp.ip_make_skb.udp_sendmsg.udpv6_sendmsg.__sys_sendto.__x64_sys_sendto
2.54 ± 9% -0.3 2.25 ± 4% perf-profile.calltrace.cycles-pp.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udpv6_recvmsg.inet6_recvmsg
0.69 ± 2% -0.1 0.63 ± 5% perf-profile.calltrace.cycles-pp.__wrgsbase_inactive
6.90 ± 4% +0.8 7.66 ± 3% perf-profile.calltrace.cycles-pp.udp_send_skb.udp_sendmsg.__sys_sendto.__x64_sys_sendto.do_syscall_64
9.88 ± 2% +0.8 10.64 ± 4% perf-profile.calltrace.cycles-pp.udp_sendmsg.udpv6_sendmsg.__sys_sendto.__x64_sys_sendto.do_syscall_64
9.94 ± 2% +0.8 10.72 ± 4% perf-profile.calltrace.cycles-pp.udpv6_sendmsg.__sys_sendto.__x64_sys_sendto.do_syscall_64.entry_SYSCALL_64_after_hwframe
6.77 ± 4% +0.8 7.58 ± 3% perf-profile.calltrace.cycles-pp.ip_send_skb.udp_send_skb.udp_sendmsg.__sys_sendto.__x64_sys_sendto
6.65 ± 4% +0.8 7.49 ± 3% perf-profile.calltrace.cycles-pp.ip_output.ip_send_skb.udp_send_skb.udp_sendmsg.__sys_sendto
6.77 ± 2% +1.0 7.77 ± 5% perf-profile.calltrace.cycles-pp.udp_send_skb.udp_sendmsg.udpv6_sendmsg.__sys_sendto.__x64_sys_sendto
6.68 ± 2% +1.0 7.69 ± 5% perf-profile.calltrace.cycles-pp.ip_send_skb.udp_send_skb.udp_sendmsg.udpv6_sendmsg.__sys_sendto
6.58 ± 2% +1.0 7.59 ± 5% perf-profile.calltrace.cycles-pp.ip_output.ip_send_skb.udp_send_skb.udp_sendmsg.udpv6_sendmsg
20.94 +1.3 22.20 ± 3% perf-profile.calltrace.cycles-pp.__x64_sys_sendto.do_syscall_64.entry_SYSCALL_64_after_hwframe
20.92 +1.3 22.19 ± 3% perf-profile.calltrace.cycles-pp.__sys_sendto.__x64_sys_sendto.do_syscall_64.entry_SYSCALL_64_after_hwframe
13.07 ± 2% +1.9 14.99 ± 4% perf-profile.calltrace.cycles-pp.ip_finish_output2.ip_output.ip_send_skb.udp_send_skb.udp_sendmsg
12.72 ± 2% +2.0 14.69 ± 4% perf-profile.calltrace.cycles-pp.__dev_queue_xmit.ip_finish_output2.ip_output.ip_send_skb.udp_send_skb
10.50 ± 2% +2.3 12.85 ± 4% perf-profile.calltrace.cycles-pp.__local_bh_enable_ip.__dev_queue_xmit.ip_finish_output2.ip_output.ip_send_skb
10.39 ± 2% +2.4 12.76 ± 4% perf-profile.calltrace.cycles-pp.do_softirq.__local_bh_enable_ip.__dev_queue_xmit.ip_finish_output2.ip_output
10.29 ± 2% +2.4 12.70 ± 4% perf-profile.calltrace.cycles-pp.handle_softirqs.do_softirq.__local_bh_enable_ip.__dev_queue_xmit.ip_finish_output2
9.77 ± 2% +2.5 12.22 ± 4% perf-profile.calltrace.cycles-pp.net_rx_action.handle_softirqs.do_softirq.__local_bh_enable_ip.__dev_queue_xmit
0.00 +4.1 4.08 ± 5% perf-profile.calltrace.cycles-pp.skb_defer_free_flush.net_rx_action.handle_softirqs.do_softirq.__local_bh_enable_ip
4.79 ± 3% -0.5 4.24 ± 5% perf-profile.children.cycles-pp.ip_make_skb
6.40 ± 4% -0.3 6.06 ± 2% perf-profile.children.cycles-pp.udpv6_recvmsg
6.43 ± 4% -0.3 6.09 ± 2% perf-profile.children.cycles-pp.inet6_recvmsg
1.51 ± 5% -0.3 1.22 ± 7% perf-profile.children.cycles-pp.dev_hard_start_xmit
1.46 ± 5% -0.3 1.18 ± 7% perf-profile.children.cycles-pp.xmit_one
0.95 ± 6% -0.2 0.77 ± 11% perf-profile.children.cycles-pp.sock_wfree
3.02 ± 2% -0.2 2.85 ± 2% perf-profile.children.cycles-pp.__ip_append_data
1.26 ± 7% -0.2 1.11 ± 7% perf-profile.children.cycles-pp.loopback_xmit
0.20 ± 11% -0.1 0.10 ± 11% perf-profile.children.cycles-pp.__enqueue_entity
0.52 ± 3% -0.1 0.43 ± 11% perf-profile.children.cycles-pp.arch_exit_to_user_mode_prepare
0.22 ± 7% -0.1 0.12 ± 21% perf-profile.children.cycles-pp.switch_fpu_return
0.22 ± 12% -0.1 0.13 ± 12% perf-profile.children.cycles-pp.ip_setup_cork
0.09 ± 11% -0.1 0.02 ± 99% perf-profile.children.cycles-pp.tick_nohz_tick_stopped
0.75 ± 2% -0.1 0.69 ± 4% perf-profile.children.cycles-pp.__wrgsbase_inactive
0.26 ± 13% -0.1 0.20 ± 17% perf-profile.children.cycles-pp.udp4_lib_lookup2
0.08 ± 20% -0.1 0.04 ± 71% perf-profile.children.cycles-pp.__ip_finish_output
0.25 ± 11% -0.0 0.20 ± 15% perf-profile.children.cycles-pp.__netif_receive_skb_core
0.17 ± 13% -0.0 0.13 ± 9% perf-profile.children.cycles-pp.ipv4_mtu
0.21 ± 11% -0.0 0.16 ± 10% perf-profile.children.cycles-pp.__mkroute_output
0.09 ± 15% -0.0 0.05 ± 52% perf-profile.children.cycles-pp.vruntime_eligible
0.10 ± 9% -0.0 0.07 ± 12% perf-profile.children.cycles-pp.update_min_vruntime
0.16 ± 12% +0.0 0.20 ± 8% perf-profile.children.cycles-pp.wakeup_preempt
0.01 ±223% +0.1 0.10 ± 15% perf-profile.children.cycles-pp.tick_nohz_get_next_hrtimer
9.94 ± 2% +0.8 10.72 ± 4% perf-profile.children.cycles-pp.udpv6_sendmsg
0.10 ± 11% +0.9 1.01 ± 6% perf-profile.children.cycles-pp._find_next_bit
20.93 +1.3 22.20 ± 3% perf-profile.children.cycles-pp.__sys_sendto
20.94 +1.3 22.21 ± 3% perf-profile.children.cycles-pp.__x64_sys_sendto
19.98 +1.3 21.26 ± 4% perf-profile.children.cycles-pp.udp_sendmsg
13.68 +1.7 15.42 ± 4% perf-profile.children.cycles-pp.udp_send_skb
13.46 ± 2% +1.8 15.28 ± 4% perf-profile.children.cycles-pp.ip_send_skb
13.28 ± 2% +1.8 15.13 ± 4% perf-profile.children.cycles-pp.ip_output
13.13 ± 2% +1.9 15.04 ± 4% perf-profile.children.cycles-pp.ip_finish_output2
12.78 ± 2% +2.0 14.74 ± 4% perf-profile.children.cycles-pp.__dev_queue_xmit
10.71 ± 3% +2.3 13.04 ± 4% perf-profile.children.cycles-pp.__local_bh_enable_ip
9.84 ± 3% +2.4 12.28 ± 4% perf-profile.children.cycles-pp.net_rx_action
13.63 +2.5 16.11 ± 3% perf-profile.children.cycles-pp.do_softirq
14.05 +2.5 16.57 ± 3% perf-profile.children.cycles-pp.handle_softirqs
0.00 +4.1 4.09 ± 5% perf-profile.children.cycles-pp.skb_defer_free_flush
0.98 ± 13% -0.9 0.08 ± 14% perf-profile.self.cycles-pp.net_rx_action
0.94 ± 7% -0.2 0.76 ± 12% perf-profile.self.cycles-pp.sock_wfree
0.20 ± 16% -0.1 0.06 ± 46% perf-profile.self.cycles-pp.xmit_one
0.70 ± 10% -0.1 0.58 ± 5% perf-profile.self.cycles-pp.menu_select
0.20 ± 6% -0.1 0.11 ± 20% perf-profile.self.cycles-pp.switch_fpu_return
0.18 ± 9% -0.1 0.10 ± 12% perf-profile.self.cycles-pp.__enqueue_entity
0.70 ± 9% -0.1 0.62 ± 5% perf-profile.self.cycles-pp._raw_spin_lock_irqsave
0.43 ± 10% -0.1 0.36 ± 7% perf-profile.self.cycles-pp.__ip_append_data
0.30 ± 11% -0.1 0.22 ± 8% perf-profile.self.cycles-pp.dequeue_entity
0.35 ± 10% -0.1 0.28 ± 11% perf-profile.self.cycles-pp.sched_balance_newidle
0.13 ± 5% -0.1 0.06 ± 48% perf-profile.self.cycles-pp.__udp4_lib_rcv
0.41 ± 8% -0.1 0.35 ± 9% perf-profile.self.cycles-pp.cpuidle_idle_call
0.29 ± 15% -0.1 0.22 ± 4% perf-profile.self.cycles-pp.syscall_return_via_sysret
0.71 -0.1 0.65 ± 4% perf-profile.self.cycles-pp.__wrgsbase_inactive
0.21 ± 13% -0.1 0.15 ± 15% perf-profile.self.cycles-pp.handle_softirqs
0.84 ± 2% -0.0 0.79 ± 2% perf-profile.self.cycles-pp.__switch_to
0.25 ± 11% -0.0 0.20 ± 15% perf-profile.self.cycles-pp.__netif_receive_skb_core
0.18 ± 21% -0.0 0.13 ± 10% perf-profile.self.cycles-pp.udp_send_skb
0.09 ± 12% -0.0 0.04 ± 75% perf-profile.self.cycles-pp.vruntime_eligible
0.16 ± 14% -0.0 0.12 ± 10% perf-profile.self.cycles-pp.ipv4_mtu
0.07 ± 24% -0.0 0.04 ± 45% perf-profile.self.cycles-pp.sock_recvmsg
0.24 ± 11% +0.1 0.29 ± 3% perf-profile.self.cycles-pp.udp_sendmsg
0.08 ± 16% +0.1 0.15 ± 9% perf-profile.self.cycles-pp.ttwu_do_activate
0.01 ±223% +0.1 0.10 ± 15% perf-profile.self.cycles-pp.tick_nohz_get_next_hrtimer
0.10 ± 15% +0.9 0.98 ± 6% perf-profile.self.cycles-pp._find_next_bit
0.00 +2.9 2.88 ± 7% perf-profile.self.cycles-pp.skb_defer_free_flush
***************************************************************************************************
lkp-srf-2sp1: 256 threads 2 sockets GENUINE INTEL(R) XEON(R) (Sierra Forest) with 128G memory
=========================================================================================
cluster/compiler/cpufreq_governor/ip/kconfig/nr_threads/rootfs/runtime/tbox_group/test/testcase:
cs-localhost/gcc-14/performance/ipv4/x86_64-rhel-9.4/1/debian-13-x86_64-20250902.cgz/300s/lkp-srf-2sp1/UDP_STREAM/netperf
commit:
844c9db7f7 ("net: use llist for sd->defer_list")
5628f3fe3b ("net: add NUMA awareness to skb_attempt_defer_free()")
844c9db7f7f5fe1b 5628f3fe3b16114e8424bbfcf05
---------------- ---------------------------
%stddev %change %stddev
\ | \
20600541 ± 3% +14.1% 23500650 ± 2% cpuidle..usage
214491 ± 5% +11.5% 239155 ± 2% meminfo.Shmem
0.11 +0.0 0.13 ± 2% mpstat.cpu.all.soft%
107642 ± 4% +17.1% 126046 ± 3% vmstat.system.cs
0.04 ± 8% +0.0 0.07 turbostat.C1%
0.46 +9.8% 0.50 turbostat.IPC
4284 ± 13% +28.8% 5519 ± 10% numa-meminfo.node0.PageTables
5684 ± 10% -21.7% 4451 ± 11% numa-meminfo.node1.PageTables
208697 ± 5% +11.0% 231719 ± 2% numa-meminfo.node1.Shmem
1073 ± 13% +28.9% 1383 ± 9% numa-vmstat.node0.nr_page_table_pages
1423 ± 10% -21.7% 1114 ± 11% numa-vmstat.node1.nr_page_table_pages
52145 ± 5% +11.0% 57900 ± 2% numa-vmstat.node1.nr_shmem
12387 ± 4% -12.9% 10792 ± 4% sched_debug.cfs_rq:/.avg_vruntime.avg
12387 ± 4% -12.9% 10792 ± 4% sched_debug.cfs_rq:/.min_vruntime.avg
64470 ± 3% +16.0% 74816 ± 3% sched_debug.cpu.nr_switches.avg
8.08 ± 5% -12.6% 7.07 ± 3% perf-sched.total_wait_and_delay.average.ms
197564 ± 5% +13.5% 224145 ± 2% perf-sched.total_wait_and_delay.count.ms
8.08 ± 5% -12.6% 7.06 ± 3% perf-sched.total_wait_time.average.ms
8.08 ± 5% -12.6% 7.07 ± 3% perf-sched.wait_and_delay.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown]
197564 ± 5% +13.5% 224145 ± 2% perf-sched.wait_and_delay.count.[unknown].[unknown].[unknown].[unknown].[unknown]
8.08 ± 5% -12.6% 7.06 ± 3% perf-sched.wait_time.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown]
224037 +3.1% 230892 proc-vmstat.nr_active_anon
53676 ± 4% +11.5% 59861 ± 2% proc-vmstat.nr_shmem
224037 +3.1% 230892 proc-vmstat.nr_zone_active_anon
1.129e+08 -5.9% 1.063e+08 proc-vmstat.numa_hit
1.127e+08 -5.9% 1.06e+08 proc-vmstat.numa_local
8.928e+08 -6.0% 8.394e+08 proc-vmstat.pgalloc_normal
8.927e+08 -6.0% 8.393e+08 proc-vmstat.pgfree
194605 -6.0% 182934 netperf.ThroughputBoth_Mbps
194605 -6.0% 182934 netperf.ThroughputBoth_total_Mbps
97220 -6.0% 91387 netperf.ThroughputRecv_Mbps
97220 -6.0% 91387 netperf.ThroughputRecv_total_Mbps
97384 -6.0% 91547 netperf.Throughput_Mbps
97384 -6.0% 91547 netperf.Throughput_total_Mbps
78.67 -6.8% 73.33 netperf.time.percent_of_cpu_this_job_got
232.75 -6.6% 217.32 netperf.time.system_time
1.114e+08 -6.0% 1.047e+08 netperf.workload
5.854e+08 +7.9% 6.313e+08 perf-stat.i.branch-instructions
0.60 -0.0 0.57 perf-stat.i.branch-miss-rate%
3570607 +2.7% 3668021 perf-stat.i.branch-misses
108376 ± 4% +17.1% 126925 ± 3% perf-stat.i.context-switches
2.29 -9.3% 2.08 perf-stat.i.cpi
3.086e+09 +8.7% 3.353e+09 perf-stat.i.instructions
0.44 +10.2% 0.49 perf-stat.i.ipc
0.61 -0.0 0.58 perf-stat.overall.branch-miss-rate%
2.24 -9.1% 2.04 perf-stat.overall.cpi
0.45 +10.0% 0.49 perf-stat.overall.ipc
8344 +15.6% 9643 perf-stat.overall.path-length
5.833e+08 +7.9% 6.292e+08 perf-stat.ps.branch-instructions
3558414 +2.8% 3656824 perf-stat.ps.branch-misses
108014 ± 4% +17.1% 126500 ± 3% perf-stat.ps.context-switches
3.075e+09 +8.7% 3.341e+09 perf-stat.ps.instructions
9.295e+11 +8.6% 1.01e+12 perf-stat.total.instructions
29.40 -1.8 27.59 perf-profile.calltrace.cycles-pp.ip_make_skb.udp_sendmsg.__sys_sendto.__x64_sys_sendto.do_syscall_64
28.64 -1.8 26.86 perf-profile.calltrace.cycles-pp.__ip_append_data.ip_make_skb.udp_sendmsg.__sys_sendto.__x64_sys_sendto
25.28 -1.7 23.60 perf-profile.calltrace.cycles-pp.ip_generic_getfrag.__ip_append_data.ip_make_skb.udp_sendmsg.__sys_sendto
25.91 -1.6 24.27 perf-profile.calltrace.cycles-pp._copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter.udp_recvmsg.inet_recvmsg
33.24 -1.6 31.66 perf-profile.calltrace.cycles-pp.__x64_sys_recvfrom.do_syscall_64.entry_SYSCALL_64_after_hwframe.recv_omni.process_requests
33.22 -1.6 31.64 perf-profile.calltrace.cycles-pp.__sys_recvfrom.__x64_sys_recvfrom.do_syscall_64.entry_SYSCALL_64_after_hwframe.recv_omni
31.95 -1.5 30.42 perf-profile.calltrace.cycles-pp.sock_recvmsg.__sys_recvfrom.__x64_sys_recvfrom.do_syscall_64.entry_SYSCALL_64_after_hwframe
33.73 -1.5 32.21 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.recv_omni.process_requests.spawn_child.accept_connection
31.86 -1.5 30.35 perf-profile.calltrace.cycles-pp.inet_recvmsg.sock_recvmsg.__sys_recvfrom.__x64_sys_recvfrom.do_syscall_64
33.68 -1.5 32.17 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.recv_omni.process_requests.spawn_child
31.84 -1.5 30.33 perf-profile.calltrace.cycles-pp.udp_recvmsg.inet_recvmsg.sock_recvmsg.__sys_recvfrom.__x64_sys_recvfrom
24.73 -1.5 23.26 perf-profile.calltrace.cycles-pp._copy_from_iter.ip_generic_getfrag.__ip_append_data.ip_make_skb.udp_sendmsg
26.98 -1.5 25.52 perf-profile.calltrace.cycles-pp.skb_copy_datagram_iter.udp_recvmsg.inet_recvmsg.sock_recvmsg.__sys_recvfrom
26.96 -1.5 25.50 perf-profile.calltrace.cycles-pp.__skb_datagram_iter.skb_copy_datagram_iter.udp_recvmsg.inet_recvmsg.sock_recvmsg
35.15 -1.4 33.74 perf-profile.calltrace.cycles-pp.recv_omni.process_requests.spawn_child.accept_connection.accept_connections
0.66 ± 5% -0.3 0.35 ± 71% perf-profile.calltrace.cycles-pp.skb_attempt_defer_free.udp_recvmsg.inet_recvmsg.sock_recvmsg.__sys_recvfrom
0.71 ± 5% +0.2 0.91 ± 4% perf-profile.calltrace.cycles-pp.sched_ttwu_pending.__flush_smp_call_function_queue.flush_smp_call_function_queue.do_idle.cpu_startup_entry
1.06 ± 9% +0.2 1.26 ± 6% perf-profile.calltrace.cycles-pp.__schedule.schedule.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp
1.09 ± 9% +0.2 1.29 ± 6% perf-profile.calltrace.cycles-pp.schedule.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg
1.14 ± 8% +0.2 1.35 ± 6% perf-profile.calltrace.cycles-pp.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg.inet_recvmsg
1.28 ± 7% +0.3 1.56 ± 7% perf-profile.calltrace.cycles-pp.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg.inet_recvmsg.sock_recvmsg
0.98 ± 13% +0.4 1.36 ± 8% perf-profile.calltrace.cycles-pp.__flush_smp_call_function_queue.flush_smp_call_function_queue.do_idle.cpu_startup_entry.start_secondary
1.36 ± 5% +0.4 1.80 ± 4% perf-profile.calltrace.cycles-pp.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_sync_key.sock_def_readable
1.36 ± 5% +0.4 1.80 ± 4% perf-profile.calltrace.cycles-pp.autoremove_wake_function.__wake_up_common.__wake_up_sync_key.sock_def_readable.__udp_enqueue_schedule_skb
0.17 ±141% +0.5 0.64 ± 7% perf-profile.calltrace.cycles-pp.ttwu_queue_wakelist.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_sync_key
4.74 ± 3% +0.5 5.22 perf-profile.calltrace.cycles-pp.__napi_poll.net_rx_action.handle_softirqs.do_softirq.__local_bh_enable_ip
4.72 ± 3% +0.5 5.21 perf-profile.calltrace.cycles-pp.process_backlog.__napi_poll.net_rx_action.handle_softirqs.do_softirq
1.38 ± 8% +0.5 1.88 ± 6% perf-profile.calltrace.cycles-pp.flush_smp_call_function_queue.do_idle.cpu_startup_entry.start_secondary.common_startup_64
0.00 +0.5 0.52 ± 2% perf-profile.calltrace.cycles-pp.dequeue_task_fair.try_to_block_task.__schedule.schedule.schedule_timeout
4.49 ± 3% +0.5 5.02 perf-profile.calltrace.cycles-pp.__netif_receive_skb_one_core.process_backlog.__napi_poll.net_rx_action.handle_softirqs
3.89 ± 3% +0.5 4.42 perf-profile.calltrace.cycles-pp.ip_local_deliver_finish.ip_local_deliver.__netif_receive_skb_one_core.process_backlog.__napi_poll
1.73 ± 6% +0.5 2.27 ± 4% perf-profile.calltrace.cycles-pp.__wake_up_common.__wake_up_sync_key.sock_def_readable.__udp_enqueue_schedule_skb.udp_queue_rcv_one_skb
3.88 ± 3% +0.5 4.41 perf-profile.calltrace.cycles-pp.ip_protocol_deliver_rcu.ip_local_deliver_finish.ip_local_deliver.__netif_receive_skb_one_core.process_backlog
3.90 ± 3% +0.5 4.44 perf-profile.calltrace.cycles-pp.ip_local_deliver.__netif_receive_skb_one_core.process_backlog.__napi_poll.net_rx_action
0.00 +0.5 0.54 perf-profile.calltrace.cycles-pp.try_to_block_task.__schedule.schedule.schedule_timeout.__skb_wait_for_more_packets
3.82 ± 3% +0.5 4.36 perf-profile.calltrace.cycles-pp.__udp4_lib_rcv.ip_protocol_deliver_rcu.ip_local_deliver_finish.ip_local_deliver.__netif_receive_skb_one_core
3.39 ± 4% +0.5 3.94 ± 2% 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
3.40 ± 4% +0.6 3.95 ± 2% perf-profile.calltrace.cycles-pp.udp_unicast_rcv_skb.__udp4_lib_rcv.ip_protocol_deliver_rcu.ip_local_deliver_finish.ip_local_deliver
1.77 ± 6% +0.6 2.33 ± 4% perf-profile.calltrace.cycles-pp.__wake_up_sync_key.sock_def_readable.__udp_enqueue_schedule_skb.udp_queue_rcv_one_skb.udp_unicast_rcv_skb
0.00 +0.6 0.56 perf-profile.calltrace.cycles-pp.select_task_rq.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_sync_key
3.15 ± 4% +0.6 3.74 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
0.00 +0.6 0.62 ± 3% perf-profile.calltrace.cycles-pp._find_next_bit.skb_defer_free_flush.net_rx_action.handle_softirqs.do_softirq
2.16 ± 5% +0.6 2.80 ± 3% perf-profile.calltrace.cycles-pp.sock_def_readable.__udp_enqueue_schedule_skb.udp_queue_rcv_one_skb.udp_unicast_rcv_skb.__udp4_lib_rcv
0.00 +0.8 0.76 ± 3% perf-profile.calltrace.cycles-pp.__free_frozen_pages.skb_release_data.napi_consume_skb.skb_defer_free_flush.net_rx_action
6.82 ± 3% +0.8 7.65 ± 2% perf-profile.calltrace.cycles-pp.intel_idle.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle
0.00 +1.2 1.24 ± 4% perf-profile.calltrace.cycles-pp.skb_release_data.napi_consume_skb.skb_defer_free_flush.net_rx_action.handle_softirqs
0.00 +1.3 1.27 ± 4% perf-profile.calltrace.cycles-pp.napi_consume_skb.skb_defer_free_flush.net_rx_action.handle_softirqs.do_softirq
15.03 ± 2% +1.4 16.40 ± 2% perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.common_startup_64
15.04 ± 2% +1.4 16.42 ± 2% perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.common_startup_64
15.05 ± 2% +1.4 16.42 ± 2% perf-profile.calltrace.cycles-pp.start_secondary.common_startup_64
10.13 +2.3 12.44 perf-profile.calltrace.cycles-pp.udp_send_skb.udp_sendmsg.__sys_sendto.__x64_sys_sendto.do_syscall_64
10.02 +2.3 12.34 perf-profile.calltrace.cycles-pp.ip_send_skb.udp_send_skb.udp_sendmsg.__sys_sendto.__x64_sys_sendto
9.73 +2.3 12.07 perf-profile.calltrace.cycles-pp.ip_finish_output2.ip_output.ip_send_skb.udp_send_skb.udp_sendmsg
9.79 +2.3 12.13 perf-profile.calltrace.cycles-pp.ip_output.ip_send_skb.udp_send_skb.udp_sendmsg.__sys_sendto
9.39 ± 2% +2.4 11.76 perf-profile.calltrace.cycles-pp.__dev_queue_xmit.ip_finish_output2.ip_output.ip_send_skb.udp_send_skb
8.41 ± 2% +2.5 10.88 perf-profile.calltrace.cycles-pp.do_softirq.__local_bh_enable_ip.__dev_queue_xmit.ip_finish_output2.ip_output
8.36 ± 2% +2.5 10.82 perf-profile.calltrace.cycles-pp.handle_softirqs.do_softirq.__local_bh_enable_ip.__dev_queue_xmit.ip_finish_output2
8.51 ± 2% +2.5 10.98 perf-profile.calltrace.cycles-pp.__local_bh_enable_ip.__dev_queue_xmit.ip_finish_output2.ip_output.ip_send_skb
7.91 ± 2% +2.5 10.45 perf-profile.calltrace.cycles-pp.net_rx_action.handle_softirqs.do_softirq.__local_bh_enable_ip.__dev_queue_xmit
0.00 +5.1 5.13 ± 2% perf-profile.calltrace.cycles-pp.skb_defer_free_flush.net_rx_action.handle_softirqs.do_softirq.__local_bh_enable_ip
29.41 -1.8 27.59 perf-profile.children.cycles-pp.ip_make_skb
28.64 -1.8 26.87 perf-profile.children.cycles-pp.__ip_append_data
25.28 -1.7 23.61 perf-profile.children.cycles-pp.ip_generic_getfrag
25.95 -1.6 24.31 perf-profile.children.cycles-pp._copy_to_iter
33.23 -1.6 31.65 perf-profile.children.cycles-pp.__sys_recvfrom
33.24 -1.6 31.66 perf-profile.children.cycles-pp.__x64_sys_recvfrom
31.95 -1.5 30.42 perf-profile.children.cycles-pp.sock_recvmsg
31.86 -1.5 30.35 perf-profile.children.cycles-pp.inet_recvmsg
31.84 -1.5 30.34 perf-profile.children.cycles-pp.udp_recvmsg
24.78 -1.5 23.29 perf-profile.children.cycles-pp._copy_from_iter
26.98 -1.5 25.52 perf-profile.children.cycles-pp.skb_copy_datagram_iter
26.96 -1.5 25.51 perf-profile.children.cycles-pp.__skb_datagram_iter
35.15 -1.4 33.74 perf-profile.children.cycles-pp.accept_connection
35.15 -1.4 33.74 perf-profile.children.cycles-pp.accept_connections
35.15 -1.4 33.74 perf-profile.children.cycles-pp.process_requests
35.15 -1.4 33.74 perf-profile.children.cycles-pp.spawn_child
35.15 -1.4 33.74 perf-profile.children.cycles-pp.recv_omni
76.98 -1.1 75.86 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
76.90 -1.1 75.78 perf-profile.children.cycles-pp.do_syscall_64
0.65 ± 7% -0.2 0.47 ± 6% perf-profile.children.cycles-pp.__virt_addr_valid
0.66 ± 5% -0.1 0.51 ± 8% perf-profile.children.cycles-pp.skb_attempt_defer_free
0.94 ± 6% -0.1 0.81 ± 3% perf-profile.children.cycles-pp.__check_object_size
0.78 ± 6% -0.1 0.66 ± 4% perf-profile.children.cycles-pp.check_heap_object
0.44 ± 3% -0.1 0.38 ± 6% perf-profile.children.cycles-pp.sched_clock
0.47 ± 3% -0.1 0.41 ± 6% perf-profile.children.cycles-pp.sched_clock_cpu
0.32 ± 8% -0.0 0.27 ± 3% perf-profile.children.cycles-pp.tick_nohz_next_event
0.20 ± 13% -0.0 0.16 ± 7% perf-profile.children.cycles-pp.__get_next_timer_interrupt
0.06 ± 7% +0.0 0.09 ± 10% perf-profile.children.cycles-pp.udp4_csum_init
0.07 ± 14% +0.0 0.10 ± 11% perf-profile.children.cycles-pp.prepare_to_wait_exclusive
0.08 ± 17% +0.0 0.11 ± 7% perf-profile.children.cycles-pp.update_cfs_group
0.23 ± 7% +0.0 0.27 ± 8% perf-profile.children.cycles-pp.__rseq_handle_notify_resume
0.09 ± 19% +0.0 0.13 ± 14% perf-profile.children.cycles-pp.available_idle_cpu
0.37 ± 6% +0.0 0.41 ± 6% perf-profile.children.cycles-pp.enqueue_task_fair
0.30 ± 8% +0.0 0.34 ± 7% perf-profile.children.cycles-pp.enqueue_entity
0.39 ± 7% +0.0 0.44 ± 5% perf-profile.children.cycles-pp.enqueue_task
0.26 ± 8% +0.1 0.31 ± 5% perf-profile.children.cycles-pp.update_curr
0.32 ± 6% +0.1 0.38 ± 8% perf-profile.children.cycles-pp.exit_to_user_mode_loop
0.37 ± 4% +0.1 0.42 ± 6% perf-profile.children.cycles-pp.ttwu_do_activate
0.34 ± 6% +0.1 0.41 ± 4% perf-profile.children.cycles-pp._raw_spin_lock_irqsave
0.27 ± 9% +0.1 0.35 ± 4% perf-profile.children.cycles-pp.cpus_share_cache
0.47 ± 6% +0.1 0.56 ± 3% perf-profile.children.cycles-pp.dequeue_entities
0.42 ± 5% +0.1 0.51 ± 2% perf-profile.children.cycles-pp.dequeue_entity
0.48 ± 6% +0.1 0.57 ± 3% perf-profile.children.cycles-pp.dequeue_task_fair
0.48 ± 5% +0.1 0.57 ± 2% perf-profile.children.cycles-pp.try_to_block_task
0.43 ± 4% +0.1 0.53 ± 6% perf-profile.children.cycles-pp.call_function_single_prep_ipi
0.39 ± 3% +0.1 0.49 ± 3% perf-profile.children.cycles-pp.os_xsave
0.46 ± 4% +0.1 0.58 ± 6% perf-profile.children.cycles-pp.__smp_call_single_queue
0.48 ± 8% +0.1 0.60 ± 7% perf-profile.children.cycles-pp.select_task_rq_fair
0.37 ± 9% +0.1 0.48 ± 5% perf-profile.children.cycles-pp.select_idle_sibling
0.43 ± 8% +0.1 0.58 ± 2% perf-profile.children.cycles-pp.select_task_rq
0.50 ± 3% +0.2 0.66 ± 6% perf-profile.children.cycles-pp.ttwu_queue_wakelist
1.58 ± 6% +0.2 1.77 ± 4% perf-profile.children.cycles-pp.schedule
0.73 ± 5% +0.2 0.92 ± 4% perf-profile.children.cycles-pp.sched_ttwu_pending
1.18 ± 8% +0.2 1.39 ± 6% perf-profile.children.cycles-pp.schedule_timeout
1.28 ± 7% +0.3 1.56 ± 7% perf-profile.children.cycles-pp.__skb_wait_for_more_packets
2.25 ± 7% +0.4 2.60 ± 4% perf-profile.children.cycles-pp.__schedule
1.04 ± 12% +0.4 1.43 ± 8% perf-profile.children.cycles-pp.__flush_smp_call_function_queue
1.38 ± 5% +0.4 1.81 ± 4% perf-profile.children.cycles-pp.autoremove_wake_function
1.42 ± 5% +0.4 1.86 ± 4% perf-profile.children.cycles-pp.try_to_wake_up
4.72 ± 3% +0.5 5.21 perf-profile.children.cycles-pp.process_backlog
4.74 ± 3% +0.5 5.22 perf-profile.children.cycles-pp.__napi_poll
1.76 ± 6% +0.5 2.28 ± 4% perf-profile.children.cycles-pp.__wake_up_common
4.49 ± 3% +0.5 5.02 perf-profile.children.cycles-pp.__netif_receive_skb_one_core
3.89 ± 3% +0.5 4.42 perf-profile.children.cycles-pp.ip_local_deliver_finish
3.90 ± 3% +0.5 4.44 perf-profile.children.cycles-pp.ip_local_deliver
3.88 ± 3% +0.5 4.41 perf-profile.children.cycles-pp.ip_protocol_deliver_rcu
3.82 ± 3% +0.5 4.37 perf-profile.children.cycles-pp.__udp4_lib_rcv
3.40 ± 4% +0.5 3.95 ± 2% perf-profile.children.cycles-pp.udp_unicast_rcv_skb
1.79 ± 6% +0.6 2.34 ± 4% perf-profile.children.cycles-pp.__wake_up_sync_key
3.39 ± 4% +0.6 3.94 ± 2% perf-profile.children.cycles-pp.udp_queue_rcv_one_skb
3.16 ± 4% +0.6 3.75 perf-profile.children.cycles-pp.__udp_enqueue_schedule_skb
0.14 ± 17% +0.6 0.77 ± 6% perf-profile.children.cycles-pp._find_next_bit
2.17 ± 5% +0.6 2.82 ± 3% perf-profile.children.cycles-pp.sock_def_readable
7.10 ± 3% +0.8 7.90 ± 2% perf-profile.children.cycles-pp.intel_idle
15.05 ± 2% +1.4 16.42 ± 2% perf-profile.children.cycles-pp.start_secondary
12.18 +2.2 14.38 perf-profile.children.cycles-pp.handle_softirqs
11.50 +2.3 13.75 perf-profile.children.cycles-pp.do_softirq
10.13 +2.3 12.44 perf-profile.children.cycles-pp.udp_send_skb
10.02 +2.3 12.34 perf-profile.children.cycles-pp.ip_send_skb
9.73 +2.3 12.07 perf-profile.children.cycles-pp.ip_finish_output2
9.79 +2.3 12.13 perf-profile.children.cycles-pp.ip_output
9.40 ± 2% +2.4 11.76 perf-profile.children.cycles-pp.__dev_queue_xmit
8.60 ± 2% +2.5 11.07 perf-profile.children.cycles-pp.__local_bh_enable_ip
7.91 ± 2% +2.6 10.47 perf-profile.children.cycles-pp.net_rx_action
0.00 +5.1 5.14 ± 2% perf-profile.children.cycles-pp.skb_defer_free_flush
25.81 -1.7 24.15 perf-profile.self.cycles-pp._copy_to_iter
1.73 ± 4% -1.6 0.10 ± 12% perf-profile.self.cycles-pp.net_rx_action
24.62 -1.5 23.14 perf-profile.self.cycles-pp._copy_from_iter
0.64 ± 7% -0.2 0.47 ± 7% perf-profile.self.cycles-pp.__virt_addr_valid
0.66 ± 5% -0.1 0.51 ± 7% perf-profile.self.cycles-pp.skb_attempt_defer_free
0.23 ± 8% -0.0 0.19 ± 11% perf-profile.self.cycles-pp.skb_release_data
0.16 ± 11% -0.0 0.13 ± 11% perf-profile.self.cycles-pp.handle_softirqs
0.15 ± 7% -0.0 0.13 ± 8% perf-profile.self.cycles-pp.__sys_sendto
0.05 ± 8% +0.0 0.07 ± 6% perf-profile.self.cycles-pp.__flush_smp_call_function_queue
0.06 ± 7% +0.0 0.08 ± 14% perf-profile.self.cycles-pp.udp4_csum_init
0.08 ± 17% +0.0 0.11 ± 10% perf-profile.self.cycles-pp.update_cfs_group
0.09 ± 17% +0.0 0.13 ± 14% perf-profile.self.cycles-pp.available_idle_cpu
0.31 ± 6% +0.0 0.36 ± 4% perf-profile.self.cycles-pp._raw_spin_lock_irqsave
0.12 ± 14% +0.1 0.17 ± 11% perf-profile.self.cycles-pp.irqtime_account_irq
0.00 +0.1 0.06 ± 19% perf-profile.self.cycles-pp.__skb_wait_for_more_packets
0.02 ± 99% +0.1 0.09 ± 26% perf-profile.self.cycles-pp.ttwu_queue_wakelist
0.27 ± 9% +0.1 0.35 ± 4% perf-profile.self.cycles-pp.cpus_share_cache
0.38 ± 6% +0.1 0.47 ± 10% perf-profile.self.cycles-pp.sock_def_readable
0.37 ± 11% +0.1 0.46 ± 5% perf-profile.self.cycles-pp.flush_smp_call_function_queue
0.37 ± 9% +0.1 0.47 ± 3% perf-profile.self.cycles-pp.__wake_up_common
0.43 ± 4% +0.1 0.53 ± 6% perf-profile.self.cycles-pp.call_function_single_prep_ipi
0.39 ± 3% +0.1 0.49 ± 3% perf-profile.self.cycles-pp.os_xsave
0.36 ± 5% +0.1 0.46 ± 9% perf-profile.self.cycles-pp.try_to_wake_up
0.58 ± 6% +0.1 0.71 ± 3% perf-profile.self.cycles-pp.__skb_datagram_iter
0.12 ± 11% +0.6 0.74 ± 5% perf-profile.self.cycles-pp._find_next_bit
7.10 ± 3% +0.8 7.90 ± 2% perf-profile.self.cycles-pp.intel_idle
0.00 +3.1 3.08 ± 4% perf-profile.self.cycles-pp.skb_defer_free_flush
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
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