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

[Hui Kang <hkang@xxxxxxxxxxxxxxxxx>]

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. 

- Hui

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