Energy analysis of a DVFS based power strategy on ARM platforms

This paper focuses on the implementation of a DVFS based Dynamic Stretch to Fit power strategy on a ARM based platform. The actual execution time (AET) of tasks within an application, implemented on a processor is always less or equal to the worst execution time (WCET). The time slack produced by AET and WCET of one task can be utilized by the other tasks for their execution. We take advantage of this slack in our DSF power strategy to decrease processors frequency for the remaining tasks during their execution. We analyze Energy gains by implementing our DVFS based DSF power strategy on different ARM based processors (ARM1176JZF-S, CortexA9) and our results showed significant amount of gains up to 52% for different execution conditions.