A predictive system shutdown method for energy saving of event-driven computation

This paper presents a system-level power management technique for energy sa ving of event-driven applications. We present a new predictive system-shutd own method to exploit sleep mode operations for energy saving. We use an ex ponential-average approach to predict the upcoming idle period. We introduc e two mechanisms, prediction-miss correction and prewake-up,to improve the hit ratio and to reduce the delay overhead. Experiments on four different e vent-driven applications show that our proposed method achieves high hit ra tios in a wide range of delay overheads, which results in a high degree of energy saving with low delay penalties.