Power-aware operating systems for interactive systems

被引：33
作者：
Lu, YH [1 ]
Benini, L
De Micheli, G
机构：
[1] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA
[2] Univ Bologna, Dept Elect & Comp Sci, I-40136 Bologna, Italy
来源：
IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS | 2002年 / 10卷 / 02期
基金：
美国国家科学基金会;
关键词：
interactive systems; operating systems; power management; scheduling;
D O I：
10.1109/92.994989
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
Many portable systems deploy operating systems (OS) to support versatile functionality and to manage resources, including power. This paper presents a new approach for using OS to reduce the power consumption of 10 devices in interactive systems. Low-power OS observes the relationship between hardware devices and processes. The OS kernel estimates the utilization of a device from each process. If a device is not used by any running process, the OS puts it into a low-power state. This paper also explains how scheduling can facilitate power management. When processes are properly scheduled, power reduction can be achieved without degrading performance. We implemented a prototype on Linux to control two devices; experimental results showed nearly 70% power saving on a network card and a hard disk drive.
引用
收藏
页码：119 / 134
页数：16
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