[pve-devel] win8r2 virtio net problems

Dietmar Maurer dietmar at proxmox.com
Fri Mar 28 15:07:23 CET 2014


Hi all,

we just observed bad performance values with virtio network on win8r2 guests.

A simple iperf from a VM to the host shown about 700Mbit/s.

Even worse, iperf between 2 win8r2 guests on the same bridge shown below 30Mbit/s.

Using linux VMs, I am able to get > 9Gbit/s.

I already made all optimizations suggested at:

http://pve.proxmox.com/wiki/Paravirtualized_Network_Drivers_for_Windows

Any ideas?

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