A Technique to Save More Energy Using Redundant Processors in Hard Real-Time Systems With DVS

Embedded real-time systems are getting ever more influential to daily lives in many important ways and one of the greatest concerns for such systems is short battery life. Dynamic Voltage Scaling (DVS) is a technique to reduce energy consumption by lowering the supply voltage level and the operating frequency of the CPU. Recently, multi-core CPUs become widespread in desktop computing, as the clock speed of a CPU reaches its physical limitation. With multiple processing units, higher workload can be processed efficiently.