Network Improvements in VMware vSphere 6 Boost Performance for 40G NICs
Introduced in vSphere 5.5, a Linux-based driver was added to support 40GbE Mellanox adapters on ESXi. Now vSphere 6.0 adds a native driver and Dynamic NetQueue for Mellanox, and these features significantly improve network performance. In addition to the device driver changes, vSphere 6.0 includes improvements to the vmxnet3 virtual NIC (vNIC) that allows a single vNIC to achieve line-rate performance with 40GbE physical NICs. Another performance feature introduced in 6.0 for high bandwidth NICs is NUMA Aware I/O which improves performance by collocating highly network-intensive workloads with the device NUMA node. In this blog, we highlight these features and the corresponding benefits achieved.
We used two identical Dell PowerEdge R720 servers with Intel E5-2667 @ 2.90GHz and 64GB of memory and Mellanox Technologies MT27500 Family [ConnectX-3] / Intel Corporation 82599EB 10-Gigabit SFI/SFP+ Network NICs for our tests.
To learn more and to read the entire article at its source, please refer to the following page, Network Improvements in vSphere 6 Boost Performance for 40G NICs- VMware Blogs