摘要
能耗问题已经成为嵌入式系统研究的热点之一,越来越多的嵌入式处理器支持动态电压调整(DVS)技术以减少电能消耗。分析了一种适用于硬实时系统的基于DVS的反馈EDF调度算法,针对其在实际应用中的不足进行了改进,详细介绍了如何利用改进后的算法修改μC/OS-Ⅱ内核的调度策略使其适用于采用DVS技术的硬实时系统。实验结果表明,改进后的μC/OS-Ⅱ符合硬实时应用的要求且节能效果显著。
Energy consuming has got much attention in embedded system research. More and more embedded processors use the DVS techniques to save energy. The feedback EDF scheduling is analyzed and improved which is fit to the DVS based hard real-time systems, and how to use this improved algorithm to modify the task scheduling of the μC/OS-Ⅱ kernel which is applied to the DVS based hard real- time systems is introduced. The experiment shows that the improved μC/OS-Ⅱ kernel meets the hard real-time requirements and performs well on saving energy.
出处
《计算机工程与设计》
CSCD
北大核心
2008年第16期4128-4131,共4页
Computer Engineering and Design
