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Date: Sun, 04 Jan 2015 10:18:35 +0800
From: Huang Ying <ying.huang@...el.com>
To: Gu Zheng <guz.fnst@...fujitsu.com>
Cc: "David S. Miller" <davem@...emloft.net>,
LKML <linux-kernel@...r.kernel.org>, LKP ML <lkp@...org>
Subject: [LKP] [net/socket.c ] 0cf00c6f360: -3.1% netperf.Throughput_Mbps
FYI, we noticed the below changes on
commit 0cf00c6f360a3f7b97be000520f1acde88800536 ("net/socket.c : introduce helper function do_sock_sendmsg to replace reduplicate code")
testbox/testcase/testparams: lkp-t410/netperf/performance-300s-200%-10K-SCTP_STREAM_MANY
42eef7a0bb0989cd 0cf00c6f360a3f7b97be000520
---------------- --------------------------
%stddev %change %stddev
\ | \
1293786 ± 4% -17.0% 1073209 ± 4% netperf.time.voluntary_context_switches
13.73 ± 3% -8.2% 12.61 ± 1% netperf.time.user_time
1198 ± 0% -3.1% 1162 ± 0% netperf.Throughput_Mbps
220 ± 0% -2.8% 214 ± 0% netperf.time.percent_of_cpu_this_job_got
653 ± 0% -2.7% 635 ± 0% netperf.time.system_time
5.91 ± 22% -100.0% 0.00 ± 0% perf-profile.cpu-cycles._raw_spin_unlock_bh.release_sock.sctp_sendmsg.inet_sendmsg.sock_sendmsg
0 ± 0% +Inf% 131 ± 1% latency_stats.avg.sctp_sendmsg.[sctp].inet_sendmsg.do_sock_sendmsg.___sys_sendmsg.__sys_sendmsg.SyS_sendmsg.system_call_fastpath
0 ± 0% +Inf% 4976 ± 0% latency_stats.max.sctp_sendmsg.[sctp].inet_sendmsg.do_sock_sendmsg.___sys_sendmsg.__sys_sendmsg.SyS_sendmsg.system_call_fastpath
15.58 ± 5% -100.0% 0.00 ± 0% perf-profile.cpu-cycles.sctp_datamsg_from_user.sctp_sendmsg.inet_sendmsg.sock_sendmsg.___sys_sendmsg
21.57 ± 6% -100.0% 0.00 ± 0% perf-profile.cpu-cycles.sctp_primitive_SEND.sctp_sendmsg.inet_sendmsg.sock_sendmsg.___sys_sendmsg
21.10 ± 6% -100.0% 0.00 ± 0% perf-profile.cpu-cycles.release_sock.sctp_sendmsg.inet_sendmsg.sock_sendmsg.___sys_sendmsg
62.06 ± 2% -100.0% 0.00 ± 0% perf-profile.cpu-cycles.sctp_sendmsg.inet_sendmsg.sock_sendmsg.___sys_sendmsg.__sys_sendmsg
62.68 ± 2% -100.0% 0.00 ± 0% perf-profile.cpu-cycles.inet_sendmsg.sock_sendmsg.___sys_sendmsg.__sys_sendmsg.sys_sendmsg
63.26 ± 2% -100.0% 0.00 ± 0% perf-profile.cpu-cycles.sock_sendmsg.___sys_sendmsg.__sys_sendmsg.sys_sendmsg.system_call_fastpath
0 ± 0% +Inf% 1068435 ± 4% latency_stats.hits.sctp_sendmsg.[sctp].inet_sendmsg.do_sock_sendmsg.___sys_sendmsg.__sys_sendmsg.SyS_sendmsg.system_call_fastpath
14.88 ± 1% -100.0% 0.00 ± 0% perf-profile.cpu-cycles.sctp_backlog_rcv.release_sock.sctp_sendmsg.inet_sendmsg.sock_sendmsg
12.33 ± 4% -100.0% 0.00 ± 0% perf-profile.cpu-cycles.sctp_do_sm.sctp_primitive_SEND.sctp_sendmsg.inet_sendmsg.sock_sendmsg
0 ± 0% +Inf% 1.404e+08 ± 3% latency_stats.sum.sctp_sendmsg.[sctp].inet_sendmsg.do_sock_sendmsg.___sys_sendmsg.__sys_sendmsg.SyS_sendmsg.system_call_fastpath
8.68 ± 5% -100.0% 0.00 ± 0% perf-profile.cpu-cycles.sctp_user_addto_chunk.sctp_datamsg_from_user.sctp_sendmsg.inet_sendmsg.sock_sendmsg
5.78 ± 6% -100.0% 0.00 ± 0% perf-profile.cpu-cycles.sctp_make_datafrag_empty.sctp_datamsg_from_user.sctp_sendmsg.inet_sendmsg.sock_sendmsg
4960 ± 1% -100.0% 0 ± 0% latency_stats.max.sctp_sendmsg.[sctp].inet_sendmsg.sock_sendmsg.___sys_sendmsg.__sys_sendmsg.SyS_sendmsg.system_call_fastpath
135 ± 3% -100.0% 0 ± 0% latency_stats.avg.sctp_sendmsg.[sctp].inet_sendmsg.sock_sendmsg.___sys_sendmsg.__sys_sendmsg.SyS_sendmsg.system_call_fastpath
1.755e+08 ± 5% -100.0% 0 ± 0% latency_stats.sum.sctp_sendmsg.[sctp].inet_sendmsg.sock_sendmsg.___sys_sendmsg.__sys_sendmsg.SyS_sendmsg.system_call_fastpath
1289900 ± 4% -100.0% 0 ± 0% latency_stats.hits.sctp_sendmsg.[sctp].inet_sendmsg.sock_sendmsg.___sys_sendmsg.__sys_sendmsg.SyS_sendmsg.system_call_fastpath
0.00 ± 0% +Inf% 5.88 ± 9% perf-profile.cpu-cycles._raw_spin_unlock_bh.release_sock.sctp_sendmsg.inet_sendmsg.do_sock_sendmsg
0.00 ± 0% +Inf% 6.16 ± 0% perf-profile.cpu-cycles.sctp_make_datafrag_empty.sctp_datamsg_from_user.sctp_sendmsg.inet_sendmsg.do_sock_sendmsg
0.00 ± 0% +Inf% 8.69 ± 0% perf-profile.cpu-cycles.sctp_user_addto_chunk.sctp_datamsg_from_user.sctp_sendmsg.inet_sendmsg.do_sock_sendmsg
0.00 ± 0% +Inf% 12.81 ± 3% perf-profile.cpu-cycles.sctp_do_sm.sctp_primitive_SEND.sctp_sendmsg.inet_sendmsg.do_sock_sendmsg
0.00 ± 0% +Inf% 22.40 ± 4% perf-profile.cpu-cycles.sctp_primitive_SEND.sctp_sendmsg.inet_sendmsg.do_sock_sendmsg.___sys_sendmsg
0.00 ± 0% +Inf% 16.02 ± 0% perf-profile.cpu-cycles.sctp_datamsg_from_user.sctp_sendmsg.inet_sendmsg.do_sock_sendmsg.___sys_sendmsg
0.00 ± 0% +Inf% 20.81 ± 3% perf-profile.cpu-cycles.release_sock.sctp_sendmsg.inet_sendmsg.do_sock_sendmsg.___sys_sendmsg
0.00 ± 0% +Inf% 64.24 ± 2% perf-profile.cpu-cycles.do_sock_sendmsg.___sys_sendmsg.__sys_sendmsg.sys_sendmsg.system_call_fastpath
0.00 ± 0% +Inf% 63.64 ± 2% perf-profile.cpu-cycles.inet_sendmsg.do_sock_sendmsg.___sys_sendmsg.__sys_sendmsg.sys_sendmsg
0.00 ± 0% +Inf% 63.01 ± 2% perf-profile.cpu-cycles.sctp_sendmsg.inet_sendmsg.do_sock_sendmsg.___sys_sendmsg.__sys_sendmsg
0.00 ± 0% +Inf% 14.61 ± 1% perf-profile.cpu-cycles.sctp_backlog_rcv.release_sock.sctp_sendmsg.inet_sendmsg.do_sock_sendmsg
1911 ± 30% +92.9% 3687 ± 19% latency_stats.sum.down.console_lock.console_device.tty_open.chrdev_open.do_dentry_open.vfs_open.do_last.path_openat.do_filp_open.do_sys_open.SyS_open
197535 ± 24% +45.6% 287661 ± 14% sched_debug.cpu#1.sched_goidle
2800 ± 7% +58.9% 4449 ± 12% cpuidle.C6-NHM.usage
8319130 ± 3% +48.0% 12315380 ± 12% cpuidle.C6-NHM.time
16345940 ± 12% +52.9% 24992140 ± 9% cpuidle.C1-NHM.time
4.83 ± 13% +52.6% 7.37 ± 10% turbostat.%c1
36210370 ± 14% +54.4% 55904924 ± 10% cpuidle.C1E-NHM.time
4763 ± 14% +70.5% 8121 ± 7% cpuidle.C3-NHM.usage
740074 ± 13% +54.9% 1146007 ± 9% cpuidle.C1E-NHM.usage
201068 ± 19% +38.3% 277987 ± 11% sched_debug.cpu#0.sched_goidle
0.23 ± 10% +60.4% 0.36 ± 27% turbostat.%c6
0.14 ± 16% +27.8% 0.17 ± 19% turbostat.%c3
198646 ± 19% +44.9% 287931 ± 11% sched_debug.cpu#2.sched_goidle
401326 ± 16% +47.4% 591389 ± 10% cpuidle.C1-NHM.usage
115 ± 10% -23.6% 88 ± 16% latency_stats.avg.rpc_wait_bit_killable.__rpc_execute.rpc_execute.rpc_run_task.rpc_call_sync.nfs3_rpc_wrapper.nfs3_proc_access.nfs_do_access.nfs_permission.__inode_permission.inode_permission.may_open
34172 ± 7% +30.3% 44535 ± 5% softirqs.SCHED
3363437 ± 11% +34.9% 4538159 ± 14% cpuidle.C3-NHM.time
156 ± 5% +26.1% 197 ± 6% uptime.idle
212838 ± 17% +39.3% 296432 ± 7% sched_debug.cpu#3.sched_goidle
151 ± 5% -18.5% 123 ± 3% latency_stats.avg.sctp_skb_recv_datagram.[sctp].sctp_recvmsg.[sctp].sock_common_recvmsg.sock_recvmsg.___sys_recvmsg.__sys_recvmsg.SyS_recvmsg.system_call_fastpath
1137848 ± 9% +15.6% 1314801 ± 4% sched_debug.cpu#1.sched_count
1137594 ± 9% +15.5% 1314483 ± 4% sched_debug.cpu#1.nr_switches
427 ± 7% +15.8% 495 ± 5% sched_debug.cpu#3.load
607501 ± 6% -11.3% 539116 ± 4% sched_debug.cpu#2.ttwu_local
1063918 ± 4% -10.4% 952749 ± 6% latency_stats.sum.do_wait.SyS_wait4.system_call_fastpath
3700692 ± 3% +12.8% 4174394 ± 2% latency_stats.hits.sctp_skb_recv_datagram.[sctp].sctp_recvmsg.[sctp].sock_common_recvmsg.sock_recvmsg.___sys_recvmsg.__sys_recvmsg.SyS_recvmsg.system_call_fastpath
1.05 ± 4% +10.2% 1.16 ± 4% perf-profile.cpu-cycles.kmalloc_large_node.__kmalloc_node_track_caller.__kmalloc_reserve.__alloc_skb.sctp_packet_transmit
2.93 ± 5% +7.9% 3.16 ± 3% perf-profile.cpu-cycles.__kmalloc_reserve.isra.26.__alloc_skb._sctp_make_chunk.sctp_make_datafrag_empty.sctp_datamsg_from_user
334282 ± 4% -7.3% 309726 ± 2% sched_debug.cfs_rq[1]:/.min_vruntime
0.91 ± 7% -11.0% 0.81 ± 3% perf-profile.cpu-cycles.nf_hook_slow.ip_output.ip_local_out_sk.ip_queue_xmit.sctp_v4_xmit
2.74 ± 2% +8.2% 2.97 ± 2% perf-profile.cpu-cycles.get_page_from_freelist.__alloc_pages_nodemask.alloc_kmem_pages_node.kmalloc_large_node.__kmalloc_node_track_caller
245637 ± 3% -13.0% 213811 ± 9% sched_debug.cfs_rq[1]:/.MIN_vruntime
245637 ± 3% -13.0% 213811 ± 9% sched_debug.cfs_rq[1]:/.max_vruntime
623176 ± 4% -9.9% 561641 ± 5% sched_debug.cpu#3.ttwu_local
437 ± 2% -7.7% 403 ± 4% sched_debug.cpu#1.cpu_load[3]
1293786 ± 4% -17.0% 1073209 ± 4% time.voluntary_context_switches
27545 ± 3% +11.2% 30617 ± 1% vmstat.system.cs
94.80 ± 0% -2.9% 92.09 ± 0% turbostat.%c0
220 ± 0% -2.8% 214 ± 0% time.percent_of_cpu_this_job_got
653 ± 0% -2.7% 635 ± 0% time.system_time
lkp-t410: Westmere
Memory: 2G
To reproduce:
apt-get install ruby ruby-oj
git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
cd lkp-tests
bin/setup-local job.yaml # the job file attached in this email
bin/run-local job.yaml
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,
Huang, Ying
View attachment "job.yaml" of type "text/plain" (1736 bytes)
View attachment "reproduce" of type "text/plain" (710 bytes)
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