From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753762AbaCMJ3i (ORCPT ); Thu, 13 Mar 2014 05:29:38 -0400 Received: from [143.182.124.37] ([143.182.124.37]:30517 "EHLO mga14.intel.com" rhost-flags-FAIL-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1753677AbaCMJ3h (ORCPT ); Thu, 13 Mar 2014 05:29:37 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,646,1389772800"; d="scan'208";a="491125084" Date: Thu, 13 Mar 2014 17:29:33 +0800 From: Fengguang Wu To: Daniel Borkmann Cc: "David S. Miller" , LKML , lkp@01.org, netdev@vger.kernel.org Subject: [loopback] b17c706987f: +91.0% qperf.sctp_bw.bw.MB_sec Message-ID: <20140313092933.GA31360@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Daniel, We are glad to notice this big performance gain on git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git master commit b17c706987fa6f28bdc1771c8266e7a69e22adcb ("loopback: sctp: add NETIF_F_SCTP_CSUM to device features") test case: lkp-a06/micro/qperf/600s 72f8e06f3ea022d b17c706987fa6f28bdc1771c8 --------------- ------------------------- 39.30 ~ 3% +91.0% 75.06 ~11% TOTAL qperf.sctp_bw.bw.MB_sec 126 ~ 0% -3.2% 122 ~ 0% TOTAL qperf.sctp_lat.latency.us 216270 ~ 2% -46.5% 115740 ~ 4% TOTAL cpuidle.C4.usage 48722971 ~ 5% +45.1% 70681678 ~ 7% TOTAL cpuidle.C2.time 370655 ~ 2% +46.8% 543952 ~ 7% TOTAL cpuidle.C2.usage 1.00 ~13% -22.8% 0.77 ~15% TOTAL perf-profile.cpu-cycles.acpi_processor_ffh_cstate_enter.acpi_idle_enter_bm.cpuidle_enter_state.cpuidle_idle_call.arch_cpu_idle 15233974 ~ 0% +14.2% 17397187 ~ 3% TOTAL proc-vmstat.pgalloc_normal 24268359 ~ 0% +14.2% 27716949 ~ 3% TOTAL proc-vmstat.pgfree 9034872 ~ 0% +14.2% 10321019 ~ 3% TOTAL proc-vmstat.pgalloc_dma32 51262 ~ 2% -10.0% 46151 ~ 3% TOTAL time.involuntary_context_switches 13874 ~ 1% +4.8% 14540 ~ 0% TOTAL vmstat.system.cs 812 ~ 0% -3.4% 784 ~ 1% TOTAL time.system_time 4125867 ~ 1% +3.9% 4285302 ~ 0% TOTAL time.voluntary_context_switches Legend: ~XX% - stddev percent [+-]XX% - change percent qperf.sctp_bw.bw.MB_sec 90 ++------------------------------------------------------------O-------+ | O O | 80 ++ O O O O O O | O O O O O O O O | | O O O O O | 70 ++ O O O | O | 60 ++ O | | | 50 ++ | | | | .*.. .*.. .*.. .*. .*.. | 40 *+.*.*. *.*..*..*..*.*. *.*..*..* *. *..*. *.*..*..* | | | 30 ++--------------------------------------------------------------------+ [O] bisect-bad sample [*] bisect-good sample Thanks, Fengguang