Abstract:

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%.

Key words: power management;virtualization;high performance computing