A Survey of Design Techniques with Dynamic Voltage Scaling Algorithms for Hard Real-Time Systems

• Main Authors: Ko-Yin Liu, 柳可芸
• Other Authors: Tai-Yi Huang
• Format: Others
• Language: en_US
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/60224950838822745387

碩士 === 國立清華大學 === 資訊工程學系 === 93 === Dynamic voltage scaling (DVS) has become the most efficient and im-portant technique for reducing energy consumption of processors, es-pecially in embedded hard real-time systems. A number of approaches have been proposed by different research groups to utilize DVS on different task models and system configurations. In this paper, we provide a comprehensive comparison of DVS-capable low-power real-time scheduling algorithms for a periodic fixed-priority task model. Our analysis focuses on their energy efficiency and performance com-parison. This paper intends to serve as a reference guild in the design of a low-power real-time system. In addition to qualitative analysis, we also conducted experiments to quantitatively compare the perfor-mance of these algorithms on two practical scenarios. Finally, we give the definition of a task set suitable for each algorithm.