From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 15CB6C07E85 for ; Tue, 11 Dec 2018 14:05:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AF9F42081B for ; Tue, 11 Dec 2018 14:05:38 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AF9F42081B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=goodmis.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726705AbeLKOFh convert rfc822-to-8bit (ORCPT ); Tue, 11 Dec 2018 09:05:37 -0500 Received: from mail.kernel.org ([198.145.29.99]:57018 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726454AbeLKOFh (ORCPT ); Tue, 11 Dec 2018 09:05:37 -0500 Received: from gandalf.local.home (cpe-66-24-56-78.stny.res.rr.com [66.24.56.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 032732081B; Tue, 11 Dec 2018 14:05:34 +0000 (UTC) Date: Tue, 11 Dec 2018 09:05:32 -0500 From: Steven Rostedt To: kernel test robot Cc: Masami Hiramatsu , LKML , Linus Torvalds , lkp@01.org Subject: Re: [LKP] [function_graph] 8114865ff8: netperf.Throughput_tps -1.1% regression Message-ID: <20181211090532.56284ee4@gandalf.local.home> In-Reply-To: <20181211091631.GQ23332@shao2-debian> References: <20181211091631.GQ23332@shao2-debian> X-Mailer: Claws Mail 3.16.0 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 11 Dec 2018 17:16:31 +0800 kernel test robot wrote: > 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 This must be a false positive, as the commit in question simply adds a function that nothing calls. -- Steve > > 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