The Windows Server Performance team have
done a really interesting post on how to optimize network performance
inside of virtual machines by increasing the size of the VMBus buffers
used by our network adapters.
You can found it there
http://blogs.technet.com/winserverperformance/archive/2010/02/02/increase-vmbus-buffer-sizes-to-increase-network-throughput-to-guest-vms.aspx
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