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HyperV 2008 R2 - VM to VM data transfer slow speeds

    Question

  • HyperV 2008 R2 Cluster with 2 nodes.

    Host to Host traffic is as expected at 75-100MB/s. Inter VM traffic even when on the same host was at 5-6MB/s.

    I installed latest firmware/drivers for all host nics. Disabled TCP Connection Offload, large send offload, RSS and Chimney globally using netsh,  and  Virtual Machine Queues. The speed improved to 20MB/s but this is still drastically slow. 

    We are also experiencing this on other 08 R2 cluster's.

    Has anyone experienced this and found a solid solution? I have followed a lot of the other threads but no one seems to have a definitive answer/solution for this?


    Tuesday, November 05, 2013 8:27 AM

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