Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758802AbaGYGhK (ORCPT ); Fri, 25 Jul 2014 02:37:10 -0400 Received: from mail-ig0-f173.google.com ([209.85.213.173]:52346 "EHLO mail-ig0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750828AbaGYGhI (ORCPT ); Fri, 25 Jul 2014 02:37:08 -0400 MIME-Version: 1.0 In-Reply-To: <53D1F9B5.8050500@intel.com> References: <53d1f50b.CEZoGFBjN5Kgc+zm%fengguang.wu@intel.com> <53D1F9B5.8050500@intel.com> Date: Thu, 24 Jul 2014 23:37:07 -0700 Message-ID: Subject: Re: [LKP] [net] 11ef7a8996d: +27.3% netperf.Throughput_Mbps From: Tom Herbert To: Aaron Lu Cc: "David S. Miller" , LKML , lkp@01.org Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Are you pointing out a regressions in this? On Thu, Jul 24, 2014 at 11:31 PM, Aaron Lu wrote: > 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. > > Thanks, > Aaron -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/