From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Fitzhardinge Subject: Re: Re: network performance drop heavily in xen 4.0 release Date: Mon, 26 Apr 2010 13:23:37 -0700 Message-ID: <4BD5F649.2020601@goop.org> References: <20100418185506.GN1878@reaktio.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: yingbin wang Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org On 04/23/2010 11:42 PM, yingbin wang wrote: > of course. > the attachment is the dom0 kernel compile config that fix the problem. > I don't know the exact config option which cause the problem, so I > don't test 2.6.18.8 with debug.you can compare it with the previous > config to find the differences. > > Here are my test results: > > test tool: iperf-2.0.4 > command: > root@10.250.6.25 : iperf -s > root@10.250.6.28 : iperf -c 10.250.6.25 -i 1 -t 100 > > network performance: > > xen4.0+kernel2.6.31.13(with debug): > [ ID] Interval Transfer Bandwidth > [ 4] 0.0- 9.5 sec 249 MBytes 219 Mbits/sec > > xen4.0+kernel2.6.31.13(without debug): > [ ID] Interval Transfer Bandwidth > [ 4] 0.0-100.0 sec 10.7 GBytes 920 Mbits/sec > How do these compare to running the same 2.6.31.13 kernel native? Thanks, J