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Date: Mon, 31 Jul 2023 21:35:19 +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 Memory Management List
<linux-mm@...ck.org>, Jakub Kicinski <kuba@...nel.org>, Soheil Hassas Yeganeh
<soheil@...gle.com>, <netdev@...r.kernel.org>, <ying.huang@...el.com>,
<feng.tang@...el.com>, <fengwei.yin@...el.com>, <oliver.sang@...el.com>
Subject: [linux-next:master] [tcp] dfa2f04833: stress-ng.sock.ops_per_sec
-7.3% regression
Hello,
kernel test robot noticed a -7.3% regression of stress-ng.sock.ops_per_sec on:
commit: dfa2f0483360d4d6f2324405464c9f281156bd87 ("tcp: get rid of sysctl_tcp_adv_win_scale")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
testcase: stress-ng
test machine: 36 threads 1 sockets Intel(R) Core(TM) i9-10980XE CPU @ 3.00GHz (Cascade Lake) with 128G memory
parameters:
nr_threads: 1
disk: 1HDD
testtime: 60s
fs: ext4
class: os
test: sock
cpufreq_governor: performance
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/202307312121.d8479e5e-oliver.sang@intel.com
Details are as below:
-------------------------------------------------------------------------------------------------->
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
sudo bin/lkp install job.yaml # job file is attached in this email
bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run
sudo bin/lkp run generated-yaml-file
# if come across any failure that blocks the test,
# please remove ~/.lkp and /lkp dir to run from a clean state.
=========================================================================================
class/compiler/cpufreq_governor/disk/fs/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime:
os/gcc-12/performance/1HDD/ext4/x86_64-rhel-8.3/1/debian-11.1-x86_64-20220510.cgz/lkp-csl-d02/sock/stress-ng/60s
commit:
63c8778d91 ("Merge branch 'net-mana-fix-doorbell-access-for-receive-queues'")
dfa2f04833 ("tcp: get rid of sysctl_tcp_adv_win_scale")
63c8778d9149d5df dfa2f0483360d4d6f2324405464
---------------- ---------------------------
%stddev %change %stddev
\ | \
8094125 +21.5% 9832824 ± 18% cpuidle..usage
5.04 -6.1% 4.73 ± 10% iostat.cpu.system
330990 ± 2% -32.3% 223958 ± 3% turbostat.C1
4685666 +22.3% 5729557 turbostat.POLL
23600 ± 8% +51.9% 35849 ± 25% sched_debug.cfs_rq:/.min_vruntime.max
4907 ± 7% +44.2% 7073 ± 45% sched_debug.cfs_rq:/.min_vruntime.stddev
4911 ± 7% +44.1% 7075 ± 45% sched_debug.cfs_rq:/.spread0.stddev
43.08 ± 15% -41.0% 25.42 ± 32% perf-sched.wait_and_delay.avg.ms.__cond_resched.generic_perform_write.generic_file_write_iter.vfs_write.ksys_write
269948 ± 2% +8.1% 291932 ± 2% perf-sched.wait_and_delay.count.schedule_timeout.wait_woken.sk_wait_data.tcp_recvmsg_locked
43.08 ± 15% -41.0% 25.42 ± 32% perf-sched.wait_time.avg.ms.__cond_resched.generic_perform_write.generic_file_write_iter.vfs_write.ksys_write
0.02 ± 31% +35.0% 0.03 ± 5% perf-sched.wait_time.max.ms.__cond_resched.aa_sk_perm.security_socket_sendmsg.sock_sendmsg.__sys_sendto
93552 -7.3% 86706 stress-ng.sock.ops
1559 -7.3% 1445 stress-ng.sock.ops_per_sec
139.17 -3.4% 134.50 stress-ng.time.percent_of_cpu_this_job_got
5092570 +18.6% 6039727 stress-ng.time.voluntary_context_switches
1.45 +1.4 2.83 ±105% perf-stat.i.branch-miss-rate%
1620951 ± 30% -39.7% 977769 ± 37% perf-stat.i.dTLB-store-misses
911.68 -3.6% 878.55 perf-stat.i.instructions-per-iTLB-miss
1.54 +0.2 1.69 ± 15% perf-stat.overall.branch-miss-rate%
0.16 ± 30% -0.1 0.10 ± 22% perf-stat.overall.dTLB-store-miss-rate%
742.16 -4.3% 710.16 perf-stat.overall.instructions-per-iTLB-miss
1595258 ± 30% -39.6% 962800 ± 37% perf-stat.ps.dTLB-store-misses
67709 +12.6% 76211 ± 14% proc-vmstat.nr_active_anon
73849 +11.0% 81975 ± 11% proc-vmstat.nr_shmem
67709 +12.6% 76211 ± 14% proc-vmstat.nr_zone_active_anon
6320969 -6.7% 5895784 proc-vmstat.numa_hit
6314894 -6.8% 5885708 proc-vmstat.numa_local
102508 +5.9% 108525 proc-vmstat.pgactivate
48068383 -7.3% 44558110 proc-vmstat.pgalloc_normal
47937851 -7.3% 44421205 proc-vmstat.pgfree
0.70 ± 14% +0.2 0.88 ± 14% perf-profile.calltrace.cycles-pp.sched_ttwu_pending.__flush_smp_call_function_queue.flush_smp_call_function_queue.do_idle.cpu_startup_entry
0.48 ± 47% +0.2 0.70 ± 14% perf-profile.calltrace.cycles-pp.schedule_idle.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
2.76 ± 9% +0.5 3.30 ± 2% perf-profile.calltrace.cycles-pp.tcp_rcv_established.tcp_v4_do_rcv.tcp_v4_rcv.ip_protocol_deliver_rcu.ip_local_deliver_finish
0.39 ± 72% +0.6 0.95 ± 24% perf-profile.calltrace.cycles-pp.try_to_wake_up.__wake_up_common.__wake_up_common_lock.sock_def_readable.tcp_data_queue
3.32 ± 10% +0.7 4.00 perf-profile.calltrace.cycles-pp.tcp_v4_do_rcv.tcp_v4_rcv.ip_protocol_deliver_rcu.ip_local_deliver_finish.__netif_receive_skb_one_core
6.88 ± 7% +0.8 7.71 ± 2% perf-profile.calltrace.cycles-pp.__netif_receive_skb_one_core.process_backlog.__napi_poll.net_rx_action.__do_softirq
7.18 ± 7% +0.8 8.02 ± 2% perf-profile.calltrace.cycles-pp.__napi_poll.net_rx_action.__do_softirq.do_softirq.__local_bh_enable_ip
7.16 ± 7% +0.9 8.02 ± 2% perf-profile.calltrace.cycles-pp.process_backlog.__napi_poll.net_rx_action.__do_softirq.do_softirq
8.90 ± 6% +1.0 9.89 perf-profile.calltrace.cycles-pp.net_rx_action.__do_softirq.do_softirq.__local_bh_enable_ip.__dev_queue_xmit
9.37 ± 6% +1.0 10.40 perf-profile.calltrace.cycles-pp.__local_bh_enable_ip.__dev_queue_xmit.ip_finish_output2.__ip_queue_xmit.__tcp_transmit_skb
9.33 ± 6% +1.0 10.37 perf-profile.calltrace.cycles-pp.do_softirq.__local_bh_enable_ip.__dev_queue_xmit.ip_finish_output2.__ip_queue_xmit
9.26 ± 6% +1.0 10.30 perf-profile.calltrace.cycles-pp.__do_softirq.do_softirq.__local_bh_enable_ip.__dev_queue_xmit.ip_finish_output2
2.48 ± 17% +1.3 3.82 ± 2% perf-profile.calltrace.cycles-pp.__ip_queue_xmit.__tcp_transmit_skb.tcp_write_xmit.__tcp_push_pending_frames.tcp_sendmsg_locked
2.61 ± 17% +1.3 3.96 ± 2% perf-profile.calltrace.cycles-pp.__tcp_transmit_skb.tcp_write_xmit.__tcp_push_pending_frames.tcp_sendmsg_locked.tcp_sendmsg
0.80 ± 15% -0.4 0.43 ± 10% perf-profile.children.cycles-pp.tcp_rcv_space_adjust
1.35 ± 5% -0.2 1.19 ± 6% perf-profile.children.cycles-pp.__entry_text_start
0.56 ± 15% -0.2 0.40 ± 11% perf-profile.children.cycles-pp.__x64_sys_connect
0.56 ± 15% -0.2 0.40 ± 11% perf-profile.children.cycles-pp.__sys_connect
0.55 ± 14% -0.2 0.40 ± 12% perf-profile.children.cycles-pp.inet_stream_connect
0.55 ± 15% -0.1 0.40 ± 12% perf-profile.children.cycles-pp.__inet_stream_connect
0.38 ± 11% -0.1 0.28 ± 21% perf-profile.children.cycles-pp.exit_to_user_mode_loop
0.44 ± 9% -0.1 0.33 ± 13% perf-profile.children.cycles-pp.__close
0.37 ± 12% -0.1 0.27 ± 20% perf-profile.children.cycles-pp.task_work_run
0.77 ± 5% -0.1 0.68 ± 8% perf-profile.children.cycles-pp.syscall_exit_to_user_mode
0.34 ± 12% -0.1 0.26 ± 21% perf-profile.children.cycles-pp.__fput
0.31 ± 11% -0.1 0.23 ± 18% perf-profile.children.cycles-pp.tcp_v4_connect
0.22 ± 14% -0.1 0.16 ± 22% perf-profile.children.cycles-pp.__sock_release
0.22 ± 14% -0.1 0.16 ± 22% perf-profile.children.cycles-pp.sock_close
0.23 ± 19% -0.1 0.16 ± 14% perf-profile.children.cycles-pp.tcp_try_coalesce
0.09 ± 14% -0.0 0.05 ± 48% perf-profile.children.cycles-pp.new_inode_pseudo
0.07 ± 12% -0.0 0.04 ± 72% perf-profile.children.cycles-pp.__ns_get_path
0.17 ± 8% +0.0 0.22 ± 8% perf-profile.children.cycles-pp.ip_send_check
0.23 ± 7% +0.0 0.28 ± 7% perf-profile.children.cycles-pp.ip_local_out
0.09 ± 22% +0.0 0.14 ± 10% perf-profile.children.cycles-pp.available_idle_cpu
0.22 ± 9% +0.1 0.26 ± 7% perf-profile.children.cycles-pp.__ip_local_out
0.46 ± 11% +0.1 0.56 ± 4% perf-profile.children.cycles-pp.ttwu_queue_wakelist
0.92 ± 3% +0.1 1.06 ± 5% perf-profile.children.cycles-pp._raw_spin_lock_irqsave
7.10 ± 2% +0.7 7.76 ± 3% perf-profile.children.cycles-pp.tcp_v4_rcv
7.21 ± 2% +0.7 7.90 ± 3% perf-profile.children.cycles-pp.ip_protocol_deliver_rcu
7.42 ± 2% +0.7 8.12 ± 3% perf-profile.children.cycles-pp.ip_local_deliver_finish
8.00 ± 2% +0.7 8.71 ± 2% perf-profile.children.cycles-pp.__netif_receive_skb_one_core
8.34 ± 2% +0.7 9.06 ± 2% perf-profile.children.cycles-pp.__napi_poll
8.32 ± 2% +0.7 9.05 ± 2% perf-profile.children.cycles-pp.process_backlog
11.71 ± 3% +0.9 12.63 ± 2% perf-profile.children.cycles-pp.__dev_queue_xmit
13.86 ± 2% +0.9 14.78 ± 2% perf-profile.children.cycles-pp.__tcp_transmit_skb
11.92 ± 2% +0.9 12.86 ± 2% perf-profile.children.cycles-pp.ip_finish_output2
10.05 ± 3% +0.9 10.99 ± 2% perf-profile.children.cycles-pp.net_rx_action
12.66 ± 2% +1.0 13.62 ± 2% perf-profile.children.cycles-pp.__ip_queue_xmit
10.56 ± 3% +1.0 11.53 ± 2% perf-profile.children.cycles-pp.do_softirq
10.82 ± 3% +1.0 11.80 ± 2% perf-profile.children.cycles-pp.__local_bh_enable_ip
10.94 ± 4% +1.0 11.94 ± 2% perf-profile.children.cycles-pp.__do_softirq
0.52 ± 21% -0.4 0.16 ± 16% perf-profile.self.cycles-pp.tcp_rcv_space_adjust
0.62 ± 7% -0.1 0.48 ± 10% perf-profile.self.cycles-pp.tcp_sendmsg
0.63 ± 5% -0.1 0.55 ± 7% perf-profile.self.cycles-pp.__entry_text_start
0.10 ± 15% +0.0 0.14 ± 13% perf-profile.self.cycles-pp.schedule_timeout
0.10 ± 20% +0.0 0.14 ± 16% perf-profile.self.cycles-pp.enqueue_entity
0.08 ± 22% +0.1 0.14 ± 11% perf-profile.self.cycles-pp.available_idle_cpu
0.37 ± 8% +0.1 0.44 ± 4% perf-profile.self.cycles-pp.net_rx_action
0.92 ± 3% +0.1 1.06 ± 5% perf-profile.self.cycles-pp._raw_spin_lock_irqsave
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
View attachment "config-6.5.0-rc1-00346-gdfa2f0483360" of type "text/plain" (159815 bytes)
View attachment "job-script" of type "text/plain" (8805 bytes)
View attachment "job.yaml" of type "text/plain" (6521 bytes)
View attachment "reproduce" of type "text/plain" (532 bytes)
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