Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758296AbaGYGbW (ORCPT ); Fri, 25 Jul 2014 02:31:22 -0400 Received: from mga09.intel.com ([134.134.136.24]:4937 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753208AbaGYGbV (ORCPT ); Fri, 25 Jul 2014 02:31:21 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,729,1400050800"; d="scan'208";a="548833339" Message-ID: <53D1F9B5.8050500@intel.com> Date: Fri, 25 Jul 2014 14:31:17 +0800 From: Aaron Lu MIME-Version: 1.0 To: Tom Herbert CC: "David S. Miller" , LKML , lkp@01.org Subject: [LKP] [net] 11ef7a8996d: +27.3% netperf.Throughput_Mbps References: <53d1f50b.CEZoGFBjN5Kgc+zm%fengguang.wu@intel.com> In-Reply-To: <53d1f50b.CEZoGFBjN5Kgc+zm%fengguang.wu@intel.com> X-Forwarded-Message-Id: <53d1f50b.CEZoGFBjN5Kgc+zm%fengguang.wu@intel.com> Content-Type: multipart/mixed; boundary="------------050400030800070303090406" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is a multi-part message in MIME format. --------------050400030800070303090406 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit FYI, we noticed the below changes on commit 11ef7a8996d5d433c9cd75d80651297eccbf6d42 ("net: Performance fix for process_backlog") test case: lkp-t410/netperf/300s-200%-10K-SCTP_STREAM_MANY 68b7107b62983f2 11ef7a8996d5d433c9cd75d80 --------------- ------------------------- 1023 ~ 3% +27.3% 1302 ~ 0% TOTAL netperf.Throughput_Mbps 0.72 ~10% -91.4% 0.06 ~23% TOTAL turbostat.%c3 13385 ~12% -92.6% 987 ~12% TOTAL cpuidle.C6-NHM.usage 22745 ~10% -95.5% 1016 ~40% TOTAL cpuidle.C3-NHM.usage 42675736 ~12% -84.6% 6571705 ~19% TOTAL cpuidle.C6-NHM.time 88342 ~11% -82.1% 15811 ~ 9% TOTAL softirqs.SCHED 19148006 ~12% -95.7% 821873 ~27% TOTAL cpuidle.C3-NHM.time 439.94 ~10% -77.5% 99.05 ~ 5% TOTAL uptime.idle 1.35 ~ 6% -65.8% 0.46 ~24% TOTAL turbostat.%c6 4 ~23% +114.3% 9 ~ 0% TOTAL vmstat.procs.r 1680 ~ 3% +40.4% 2359 ~ 3% TOTAL proc-vmstat.nr_alloc_batch 447921 ~ 4% +36.2% 610047 ~ 0% TOTAL softirqs.TIMER 9.09 ~ 9% +27.6% 11.60 ~ 8% TOTAL perf-profile.cpu-cycles.memcpy.sctp_outq_flush.sctp_outq_uncork.sctp_cmd_interpreter.sctp_do_sm 2350916 ~ 4% +35.4% 3184088 ~ 0% TOTAL proc-vmstat.pgalloc_dma 7.82 ~ 9% +24.1% 9.71 ~ 4% TOTAL perf-profile.cpu-cycles.copy_user_generic_string.sctp_user_addto_chunk.sctp_datamsg_from_user.sctp_sendmsg.inet_sendmsg 38837537 ~ 3% +27.1% 49358639 ~ 0% TOTAL proc-vmstat.numa_local 38837537 ~ 3% +27.1% 49358639 ~ 0% TOTAL proc-vmstat.numa_hit 50216 ~ 1% +17.0% 58745 ~ 6% TOTAL softirqs.RCU 1.41 ~ 4% +11.6% 1.58 ~ 1% TOTAL perf-profile.cpu-cycles.get_page_from_freelist.__alloc_pages_nodemask.alloc_kmem_pages_node.kmalloc_large_node.__kmalloc_node_track_caller 48539 ~ 1% -25.5% 36171 ~ 1% TOTAL vmstat.system.cs 75.64 ~ 4% +30.6% 98.82 ~ 0% TOTAL turbostat.%c0 3949 ~ 2% +13.4% 4478 ~ 0% TOTAL vmstat.system.in Legend: ~XX% - stddev percent [+-]XX% - change percent vmstat.system.cs 52000 ++------------------------------------------------------------------+ 50000 ++ * .* *. ** *. * *. | | .* + *.** *. : **.* .* .**.**. * + + *.* * + : * .**. *. .** 48000 ** * * * * * * * .* * * * ** | 46000 ++ * | | | 44000 ++ | 42000 ++ | 40000 ++ | | | 38000 +O O O | 36000 O+ O O O O OO OO OO O O O O O OO O OO O | | O O O O O O O | 34000 ++ O O O O | 32000 ++------------------------------------------------------------------+ [*] 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. 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