I have been persuaded to move an application running under linux on to a Hyper-V VM.

I am having significant performance issues and hope some one can cast some light on them.

I am having to run on a legacy network card as the 'synthetic' NIC gives poor through put.
This gives a drop of about 50% compared with the original machine.

Disc I/O is down by a factor of 8 when copying significant amounts of data. (say 7 Gbyte)

The application originally ran on Fedora 15 on an HP DL385 (8-cores) with 8Gbyte memory The VM is running under Fedora 18 on a Dell R520 with 8 Gbyte with a fixed VHD disc

Am I correct in assuming that Fedora 18 kernel has the latest Microsoft Integration Modules?

Any suggestions would be appreciated

John Whitley
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