Win2008 R2 new features of power management

Power Management

Windows system power management, has been doing a good job. However, in Windows Server 2008 R2, energy saving is just like virtualization, which brings us a lot of highlights. It is understood that under the same load conditions of the same hardware, R2 saves 10% to 15% of energy, sometimes even 18%, than WindowsServer2003 with Service Pack2, and does not require any additional architecture.

The biggest savings are when the server is idle, thanks to the fact that the drive can adjust the power management of the hardware. However, even after the load begins to increase, intelligent operating system management functions can maintain significant power savings. This is achieved by rewriting the processor energy management engine and upgrading storage power management.

CoreParking is another interesting feature that intelligently detects system load, prioritizing and optimizing the distribution of workflow processing between available cores in the operating system. For example, in a quad-core processor, CoreParking will allow the system to assume the most basic workload in one core, allowing the other three cores to remain energy-efficient. When the workload increases to the point where other cores need to be enabled, the system boots other cores to handle the task and then restores it to a power-saving state -- in other words, an explosion of processor power.

The ability to detect energy usage and change is a new feature in Windows. Windows Server 2008 R2 adds energy and budget information reporting. Unlike some of the existing features, reports and budgets require server hardware to work together. The hardware itself reports energy usage information to the operating system via AdvancedConfiguration and PowerInterface, while Windows publishes this information through Windows Management Instrumentation - including all planning and setup data. Regardless of how energy planning is developed, we can remotely manage it. Regardless of the existing energy management settings in R1, it can be managed remotely.

Along with this is the energy budgeting feature, which is a great help when you need to set an upper limit on your energy consumption. Windows can implement intelligent control on each device, which generates a master to control energy consumption to effectively limit energy consumption. For manufacturers, the WindowsDriverModel driver interface can be used for energy budgets.