Note VMQ is ONLY used when Hyper-V is enabled. With Windows Server 2012 Hyper-V, the assignment of VMQs is performed automatically to VMs based on which ones will derive the most benefit from having a VMQ, dynamic VMQ. It achieves a similar result to RSS but it is dependent on your network adapters supporting VMQ. VMQ allows each virtual machine (VM) (up to the number of VMQs supported on the adapter) to have its own transmit/receive queue on the network adapter, which allows the traffic for VM1 to be processed by one processor core, VM2 by another processor core and so on. Hyper-V has support for Virtual Machine Queues (VMQ), which is a feature most server network adapters support. RSS allows the network load to be scaled across multiple processor cores on the system, enabling full utilization of the available bandwidth.Īfter the Hyper-V role is enabled, RSS is disabled as Hyper-V and RSS are mutually exclusive. For 1Gb, a single processor core can handle the network load however for 10Gb, a single core would become a bottleneck. Receive Side Scaling (RSS) is a great technology that is necessary when you move from 1Gb links to 10Gb links, as typically a network connection is processed only by a single processor core. Q: Is it true I can't use Receive Side Scaling when Hyper-V is enabled on Windows Server 2012?Ī.
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