From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753182AbcHPIar (ORCPT ); Tue, 16 Aug 2016 04:30:47 -0400 Received: from mga04.intel.com ([192.55.52.120]:3768 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751226AbcHPIap (ORCPT ); Tue, 16 Aug 2016 04:30:45 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.28,529,1464678000"; d="scan'208";a="866150963" Subject: Re: [LKP] [lkp] [sctp] a6c2f79287: netperf.Throughput_Mbps -37.2% regression To: Xin Long References: <20160727015425.GL21454@yexl-desktop> <20160805033109.GA28539@aaronlu.sh.intel.com> <20160808021031.GA17837@aaronlu.sh.intel.com> Cc: kernel test robot , Stephen Rothwell , lkp@01.org, "David S. Miller" , LKML From: Aaron Lu Message-ID: <614ad3e6-b231-92da-1d28-9ad3faec691a@intel.com> Date: Tue, 16 Aug 2016 16:30:43 +0800 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/16/2016 04:02 PM, Xin Long wrote: >> >> I'm testing on Linus' master, can we all use that please? >> > > [git] git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > > [mechine] > Intel(R) Xeon(R) CPU E5-2690 v2 @ 3.00GHz > mem 62G (66000220K) > > [system] > # cat /etc/redhat-release > Red Hat Enterprise Linux Server release 7.3 Beta (Maipo) > > [commit 3684b03] > [root@hp-dl380pg8-11 lxin]# uname -r > 4.8.0-rc2.3684b03 > [root@hp-dl380pg8-11 lxin]# cat test.sh > killall -0 netserver || netserver -4 & > netperf -4 -t SCTP_STREAM_MANY -c -C -l 300 -- -m 10K -H 127.0.0.1 > [root@hp-dl380pg8-11 lxin]# sh test.sh > SCTP 1-TO-MANY STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to > 127.0.0.1 () port 0 AF_INET > Recv Send Send Utilization Service Demand > Socket Socket Message Elapsed Send Recv Send Recv > Size Size Size Time Throughput local remote local remote > bytes bytes bytes secs. 10^6bits/s % S % S us/KB us/KB > > 212992 212992 10240 300.00 16914.99 3.28 3.28 0.636 0.636 > > [commit f959fb4] > [root@localhost lxin]# uname -r > 4.7.0-rc6.f959fb4 > [root@localhost lxin]# cat test.sh > killall -0 netserver || netserver -4 & > netperf -4 -t SCTP_STREAM_MANY -c -C -l 300 -- -m 10K -H 127.0.0.1 > [root@localhost lxin]# sh test.sh > SCTP 1-TO-MANY STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to > 127.0.0.1 () port 0 AF_INET > Recv Send Send Utilization Service Demand > Socket Socket Message Elapsed Send Recv Send Recv > Size Size Size Time Throughput local remote local remote > bytes bytes bytes secs. 10^6bits/s % S % S us/KB us/KB > > 212992 212992 10240 300.00 12975.32 3.35 3.35 0.847 0.846 > > > Still, in my env, the latest kernel is better than old one. > Sorry, I'm not sure why it's so different in your env. Could the test have anything to do with the hardware? i.e. yours is Xeon E5-2690 while mine is IVB i3? > > Could you do 'netperf' test manually, instead of lkp-tests, then check again. Manually test under LKP is not easy as those test machines are all doing things automatically. But if you think that is necessary, I can do that. > Pls show you system's distros as well, like rhel, ubuntu or arch ? We do not use any of these distros. The rootfs is derived from debian: https://github.com/fengguang/reproduce-kernel-bug/blob/master/debian/debian-x86_64-2015-02-07.cgz Thanks, Aaron