Analysis and Implementation of DVFS Techniques in a Multitasking Embedded System CSE 237 a Final Project

A key concern in embedded systems today is power consumption. Increasing demands for longer battery life and heating issues associated with power have led researchers to develop new ways to reduce power and energy consumption in embedded systems. Dynamic voltage and frequency scaling (DVFS) techniques are used to dynamically alter the voltage and frequency levels of the CPU to the lowest possible level while still maintaining high performance. The goal of this project was to research and analyze different DVFS policies. We designed and implemented one of these techniques and compared it to our own naive user-level DVFS technique implemented in a previous project. This paper is organized as follows. Section 2 provides an overview of previous DVFS research. Section 3 describes the DVFS design implemented in this project along and the challenges encountered. Section 4 presents the testing and results. Section 5 concludes with lessons learned and areas for future work.