Dynamic power management saves power by shutting down idle devices. Several management algorithms have been proposed and demonstrated effective in certain applications. We quantitatively compare the power saving and performance impact of these algorithms on hard disks of a desktop and a notebook computers. This paper has three contributions. First, we build a framework in Windows NT to implement power managers running realistic workloads and directly interacting with users. Second, we define performance degradation that reflects user perception. Finally, we compare power saving and performance of existing algorithms and analyze the difference.
|Title of host publication||Design, Automation, and Test in Europe|
|Subtitle of host publication||The Most Influential Papers of 10 Years Date|
|Number of pages||13|
|Publication status||Published - 2008|
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