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Fedora 18 under Hyper-V on Server 2012

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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?

posted May 30, 2013 by anonymous

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1 Answer

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most likely since they are upstream output of "lsmod" in the guest may help

however, you need to configure the ocrrect virtual hardware Linux jas as example VMware's "vmxnet" driver but if i configure a different virtual network card this would not help

the same applies for virtual disks

vmw_balloon 13415 0
vmw_vmci 61376 0
vmxnet3 49578 0
vmw_pvscsi 22858 2
answer May 30, 2013 by anonymous
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