Transparent Virtualization of Power Management
Liu Yong-yan · Computer Engineering and Science · 2012
Server consolidation based on virtual machines is employed to improve the system utilization and energy efficiency.However,the isolation effect of virtualization imposes a challenge to power management.A two-level model,i.e.inside and outside virtual machine,is proposed for transparent power management in virtual machine environments.A multi-level power behavior statistic framework is introduced to support the power profiling of virtual devices,the virtual machine and the host.Power management mechanisms are virtualized and a dynamic speed scaling algorithm is proposed to map the power management actions between virtual devices and physical devices.The experiments demonstrate that our transparent virtualization solution of power management has a negligible decline of the system performance,which is less than 1%.