Analysis of discrete voltage level energy efficient scheduling for fixed priority framework.

Energy consumption has become an increasingly important consideration in the design of real-time embedded systems. In this study, we have also tried scheduling real-time tasks under energy savings, which shows a possibility of energy reduction compared to systems employing no power saving. In this work, efforts are made to study the scheduling of soft real-time jobs with hard real-time jobs. In this study, apart from investigating the effect of voltage variation on power consumption, we have also studied its effect on the response time of soft jobs. Resource reclaiming is further explored in the proposed approach as some tasks are completed before their worst-case execution time. The analysis of resource reclaiming shows that it improves average response time and also saves energy when compared to approaches where reclaiming is not employed. Designing real-time systems with multiple processors that use less energy is still an open area of research.