Re: [Xen-devel] dom0 kernel v2.6.32.41 network problem

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Fri, Jul 15, 2011 at 05:54:11PM +0000, Hui Kang wrote:
> Hi,
> I am running two hosts with xen-4.0.1 and dom0 kernel 2.6.32.41. The two 
> hosts are connected to a Gigbit switch. Then I use iperf to measure the 
> bandwidth and got the results of 200Mbit/second, which is only 1/5 of the 
> available bandwidth.
> Then I boot these two hosts using a vanilla kernel of 2.6.32.34. The iperf 
> reports 937Mbis/s, which is very close to the available link bandwidth.
> So why the pvops dom0 kernel performs so bad? Does anyone observe similar 
> problem? Thanks.

Weird. No idea - I get around 911Mb/s with my dom0 - which is 3.0.0-rc7. Do you
have some debug options turned on?
> 
> - Hui

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