windows server 2003 performance under Xen : slow

Hi everybody,

we just did an install of Win2003 server in combination with openSuse 10.2 and Xen.

When testing the performance inside the VM, copying files is extremely slow.

I hade a testfile of 300mb on a sambaserver; when I copy this file to the dom0, it takes about 30 seconds.

When I try to copy the same file to the windows vm ; it takes 3,5 minutes!

The hardware is a HP ML310 server with 8 GB RAM.
The VM has 4GB of ram.

I looked at the CPU in Suse in windows and there’s nothing that spikes?

Am I the only one experiencing slow throughput in the virtualised 2003 environment?

thanks in advance for helping!