VON/KVM: A high performance virtual overlay network integrated with KVM

The virtual computing environments integrated with virtual machines (VMs) and virtual overlay networks play an important role in distributed computing and cloud computing. Overlay network with a layer 2 abstraction provides a powerful model for virtualized wide-area distributed computing resources on collections of virtual machines (VMs). However, the performance of existing virtual overlay network can not support the high-performance distributed computing. In this paper, we describe the design and implementation of a virtual overlay network system that has negligible latency and bandwidth in LAN networks. Our system, VON/KVM, is integrated with KVM (Kernel-based Virtual Machine), an open-sourced virtual machine monitor (VMM). VON/KVM achieves native performance and negligible overheads on 1 Gbps Ethernet networks.