More and more Windows 8 details have started emerging. Not bad, is it? And right about time, if you ask me. Here’s a little something from Microsoft Research:
Energy-Aware VMs and Cloud Computing
Virtual machines (VMs) become key platform components for data centers and Microsoft products such as Win8, System Center, and Azure. But existing power-management schemes designed at the server level, such as power capping and CPU throttling, do not work with VMs. VMmeter can estimate per-VM power consumption from Hyper-V performance counters, with the assistance of WinServer2008 R2 machine-level power metering, thus enabling power management at VM granularity. For example, we can selectively throttle VMs with the least performance hit for power capping. This demo compares VMmeter-based with hardware-based power-management solutions. We run multiple VMs, one of them being a high-priority video playback on a server. When a user requests power capping with our solution, the video playback will maintain high performance, while with hardware-capping solutions, we see reduced performance. We also will show how VMmeter can be part of System Center management packs.
