Network I/O Control (NetIOC) in VMware vSphere 6 has been enhanced to support a number of exciting new features such as bandwidth reservations. A new paper published by the Performance Engineering team shows the performance of these new features. The paper also explores the performance impact of the new NetIOC algorithm. Later tests show that NetIOC offers a powerful way to achieve network resource isolation at minimal cost, in terms of latency and CPU utilization.
You can read the paper here.