Hyper-V Networking Optimizations part 3 of 6 (RSS)

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In this post you are going to find what settings you need to configure to enable RSS.

Receive Side Scaling (RSS) enables concurrent processing of received packets from one network adapter by different CPUs on a system.

At boot time, Windows Server 2008 R2 considers the bandwidth and media connection state while allotting CPUs. Higher bandwidth network adapters get more CPUs at startup. Multiple network adapters with the same bandwidth receive the same number of receive-side scaling CPUs.

RSS was included in the Scalable Network Pack for Windows Server 2003, Windows Server 2003 SP2, and Windows Server 2008/Windows Vista. Prior to this, only one CPU could handle the traffic from a given network interface.

Note that this network optimization is configured only at parent partition level and there is no need to configure it inside VMs.