OpenStack Sydney: In network-intensive virtualised compute, the battle for performance is won or lost in the hypervisor. How can OpenStack architects make the right choice for a hypervisor networking strategy? This talk will explore some of the common ways that hypervisors can be configured for OpenStack networking, how they each perform and the associated overheads. Through use of representative benchmarks and recofiguration of the same hardware, we aim to make an objective comparison and provide some detailed