The vSphere 6.7 release includes vmxnet3 version 4, which supports some new features.

  • RSS for UDP - Receive side scaling (RSS) for the user data protocol (UDP) is now available in the vmxnet3 v4 driver. Performance testing of this feature showed a 28% improvement in receive packets per second. The test used 64-byte packets and four receive queues.
  • RSS for ESP – RSS for encapsulating security payloads (ESP) is now available in the vmxnet3 v4 driver. Performance testing of this feature showed a 146% improvement in receive packets per second during a test that used IPSEC and four receive queues.
  • Offload for Geneve/VXLAN – Generic network virtualization encapsulation (Geneve) and VXLAN offload is now available in the vmxnet3 v4 driver. Performance testing of this feature showed a 415% improvement in throughput in a test that used a packet size of 64 K with eight flows.

 

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