Utilization Control and Optimization of Real-Time Embedded Systems - Foundations and Trends (R) in Electronic Design Automation

Publisher Marketing: Real-time embedded systems are widely deployed in mission-critical applications, such as avionics mission computing, highway traffic control, remote patient monitoring, wireless communications, navigation, etc. These applications always require their real-time and embedded components to work in open and unpredictable environments, where workload is volatile and unknown. In order to guarantee the temporal correctness and avoid severe underutilization or overload, it is of vital significance to measure, control, and optimize the processor utilization adaptively. This monograph examines utilization control and optimization in real-time embedded systems. In many practical real-time embedded applications, it is desired to keep the processors' utilizations at the schedulable upper bounds. In this way, the systems deliver their best Quality of Service (QoS), and, at the same time, all real-time tasks remain schedulable. In order to achieve this goal, the authors present several effective solutions that adaptively adjust task rates and/or processor frequencies to enforce the desired utilization. Feedback control and optimization techniques have been leveraged to ensure that a system is neither overloaded nor underutilized.

Contributor Bio:  Chen, XI Xi Chen is an Assistant Professor of Political Science at the University of North Carolina at Chapel Hill. His articles have appeared in Comparative Politics and The China Quarterly. He has contributed to three books: Contemporary Chinese Politics: New Sources, Methods, and Field Strategies (Cambridge University Press, 2010), edited by Allen Carlson et al; Popular Protest in China (2008), edited by Kevin O'Brien; and Grassroots Political Reform in Contemporary China (2007), edited by Elizabeth Perry and Merle Goldman.