Energy-aware EDZL Scheduling of Periodic Tasks on Multicore Systems

Abstract

DVFS (Dynamic Voltage/Frequency Scaling) has been a significant technique for reducing energy consumption of processors.Energy-aware scheduling schemes make use of DVFS feature of processors to adjust the execution speed of processors depending upon workload; high speed for heavy workload and low speed for light workload.This paper proposes a combined DVFS scheme for EDZL (Earliest Deadline until Zero Laxity)scheduling.The scheme combines a per-core DVFS technique that calculates tasks' individual speed and MOTE technique that lowers the execution speed of a core by reclaiming slack time.Experiment results show that our scheme can decrease the energy consumption in executing periodic task.