From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753292AbaF2PPt (ORCPT ); Sun, 29 Jun 2014 11:15:49 -0400 Received: from mga01.intel.com ([192.55.52.88]:2965 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751281AbaF2PPs (ORCPT ); Sun, 29 Jun 2014 11:15:48 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,570,1400050800"; d="scan'208";a="554915748" Date: Sun, 29 Jun 2014 23:15:44 +0800 From: Fengguang Wu To: "Paul E. McKenney" Cc: Dave Hansen , LKML , lkp@01.org Subject: [rcu] 2d033d5c0d4: +225.2% iperf.tcp.sender.bps Message-ID: <20140629151544.GA11875@localhost> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="y0ulUmNC+osPPQO6" 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 --y0ulUmNC+osPPQO6 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Hi Paul, FYI, we noticed the below changes on git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/next commit 2d033d5c0d424b7029abd0fc82e940ebc318fd89 ("rcu: Bind grace-period kthreads to non-NO_HZ_FULL CPUs") test case: bens/iperf/300s-tcp e17adc3f20bc9a1 2d033d5c0d424b7029abd0fc8 --------------- ------------------------- 7.011e+09 ~ 1% +225.2% 2.28e+10 ~ 2% TOTAL iperf.tcp.sender.bps 7.011e+09 ~ 1% +225.2% 2.28e+10 ~ 2% TOTAL iperf.tcp.receiver.bps 15620691 ~ 1% +224.3% 50663012 ~ 2% TOTAL proc-vmstat.pgalloc_normal 62969722 ~ 1% +224.3% 2.042e+08 ~ 2% TOTAL proc-vmstat.pgfree 47347349 ~ 1% +224.3% 1.535e+08 ~ 2% TOTAL proc-vmstat.pgalloc_dma32 4996590 ~ 1% +218.9% 15933563 ~ 3% TOTAL softirqs.NET_RX 8084072 ~ 1% +218.4% 25739055 ~ 2% TOTAL proc-vmstat.numa_hit 8084072 ~ 1% +218.4% 25739055 ~ 2% TOTAL proc-vmstat.numa_local 28676 ~ 2% -47.5% 15059 ~11% TOTAL softirqs.RCU 99756 ~ 2% +76.0% 175606 ~ 2% TOTAL softirqs.SCHED 562 ~11% +50.9% 848 ~17% TOTAL slabinfo.proc_inode_cache.active_objs 620 ~ 8% +38.7% 860 ~15% TOTAL slabinfo.proc_inode_cache.num_objs 271905 ~ 4% +17.4% 319216 ~ 0% TOTAL softirqs.TIMER 1117 ~ 1% -9.1% 1015 ~ 2% TOTAL proc-vmstat.pgactivate 9049 ~11% -94.6% 485 ~26% TOTAL time.involuntary_context_switches 23233 ~ 1% +72.1% 39979 ~ 2% TOTAL vmstat.system.cs 13078 ~ 1% +69.1% 22117 ~ 1% TOTAL vmstat.system.in Legend: ~XX% - stddev percent [+-]XX% - change percent iperf.tcp.sender.bps 2.4e+10 ++----O-----O-----------O--------------O-----O--------O-----O-----+ | O O O O O O O O | 2.2e+10 O+ O O O | 2e+10 ++ O | | | 1.8e+10 ++ | 1.6e+10 ++ O O | | | 1.4e+10 ++ | 1.2e+10 ++ | | | 1e+10 ++ | 8e+09 ++ | *..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..* 6e+09 ++----------------------------------------------------------------+ iperf.tcp.receiver.bps 2.4e+10 ++----O-----O-----------O--------------O-----O--------O-----O-----+ | O O O O O O O O | 2.2e+10 O+ O O O | 2e+10 ++ O | | | 1.8e+10 ++ | 1.6e+10 ++ O O | | | 1.4e+10 ++ | 1.2e+10 ++ | | | 1e+10 ++ | 8e+09 ++ | *..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..* 6e+09 ++----------------------------------------------------------------+ time.involuntary_context_switches 14000 ++------------------------------------------------------------------+ | | 12000 *+. .*.. ..*..*.. .*.. | | .*..*. *. *. | 10000 ++ *. *..*.. .*..*..*.. ..*..*.. * | *. *. .*.. ..| 8000 ++ *. * | | | 6000 ++ | | | 4000 ++ | | | 2000 ++ | | O O O O | 0 O+-O--O--O--O--O---O--O--O--O--O--O--O--O-----O------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, Fengguang --y0ulUmNC+osPPQO6 Content-Type: text/plain; charset=us-ascii Content-Disposition: attachment; filename=reproduce ./iperf3 -s ./iperf3 -t 300 -f M -J -c 127.0.0.1 --y0ulUmNC+osPPQO6--