Real-Time Dynamic Voltage Scaling for Low-Power Embedded Operating Systems

In recent years, there has been a rapid and wide spread of nontraditional computing platforms, especially mobile and portable computing devices. As applications become increasingly sophisticated and processing power increases, the most serious limitation on these devices is the available battery life. Dynamic Voltage Scaling (DVS) has been a key technique in exploiting the hardware characteristics of processors to reduce energy dissipation by lowering the supply voltage and operating frequency. The DVS algorithms are shown to be able to make dramatic energy savings while providing the necessary peak computation power in general-purpose systems. However, for a large class of applications in embedded real-time systems like cellular phones and camcorders, the variable operating frequency interferes with their deadline guarantee mechanisms, and DVS in this context, despite its growing importance, is largely overlooked/under-developed. To provide real-time guarantees, DVS must consider dea...

• Type: Conference
• Year: 2001
• Where: SOSP
• Authors: Padmanabhan Pillai, Kang G. Shin
• Keywords: Embedded Real-time System, Operating System, Real-time Deadline Guarantees, Real-time Dvs, SOSP 2001