Evaluating Virtual Router Performance for the Future Internet
The Internet is ossified. It is difficult to create new services or innovate in the core of the network. In order to address this issue, the authors need a new Internet model to council the existing protocols with new ones. Virtualization is a technique that provides this capability to the Future Internet elements. In this paper, they evaluate the performance of three representative virtualization tools, Xen, VMware, and OpenVZ, for router virtualization. They conduct experiments with benchmarking tools to measure the overhead introduced by virtualization in memory, processor, network, and disk performance of virtual routers running on commodity hardware.