Date Added: Jun 2010
Virtualization is often used in cloud computing platforms for its several advantages in efficiently managing resources. However, virtualization raises certain additional challenges, and one of them is lack of power metering for Virtual Machines (VMs). Power management requirements in modern data centers have led to most new servers providing power usage measurement in hardware and alternate solutions exist for older servers using circuit and outlet level measurements. However, VM power cannot be measured purely in hardware. The authors present a solution for VM power metering, named Joulemeter. They build power models to infer power consumption from resource usage at runtime and identify the challenges that arise when applying such models for VM power metering.