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

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

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@xxxxxxxxxxx :      iperf -s
> root@xxxxxxxxxxx :      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

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