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Re: [Xen-devel] Re: network performance drop heavily in xen 4.0 release

To: yingbin wang <yingbin.wangyb@xxxxxxxxx>
Subject: Re: [Xen-devel] Re: network performance drop heavily in xen 4.0 release
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Mon, 26 Apr 2010 13:23:37 -0700
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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 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@xxxxxxxxxxx :      iperf -s
> root@xxxxxxxxxxx :      iperf -c -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 kernel native?


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