Poor Network Performance with Microsoft Windows Server 2008 / 2008 R2 Virtual Machines

 

If you are experiencing poor network performance with Microsoft Windows Server 2008 / 2008 R2 virtual machines running on VMware ESX(i) , even when using the latest VMXNET3 network adapter, implement the following KB article from VMware:

Poor network performance on Windows 2008 Server virtual machine

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1009517

Poor network performance with the VMXNET3 driver and Windows Server 2008 R2

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2039428

 

For more information regarding the configuration changes, see the following Microsoft support articles:

Information about the TCP Chimney Offload, Receive Side Scaling, and Network Direct Memory Access features in Windows Server 2008

http://support.microsoft.com/kb/951037

You experience intermittent communication failure between computers that are running Windows XP or Windows Server 2003

http://support.microsoft.com/kb/904946

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By Rotem Agmon Posted in Info

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