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10Gbps Networking Performance on ESX 3.5 Update 1


Latest Revision:
Nov 4, 2008



10 Gigabit Ethernet is expected to replace Gigabit Ethernet and become
the dominant Ethernet standard in the next few years. VMware ESX now
supports a number of 10 Gbps network cards and allows multiple virtual
machines to share a single physical NIC. This paper presents results
from our single-virtual machine and multi-virtual machine network
throughput experiments that show ESX can easily reach line rates on 10
Gbps links. The paper discusses how Jumbo Frames influence networking
performance, both on the receive and the transmit paths. The paper also
presents the results of our scalability experiments in which up to 16
virtual machines share a single 10 Gbps physical NIC and discusses the
allocation of bandwidth to different virtual machines.

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