Response time performance estimation in smartphones applying dynamic voltage & frequency scaling and completely fair scheduler

Abstract

In this paper, a response time performance estimation scheme is proposed for smartphones applying dynamic voltage & frequency scaling (DVFS) at the central processing unit (CPU) and completely fair scheduler (CFS) at the Linux kernel. DVFS techniques influence the overall time performance of the smartphone since changes in CPU operational frequency will change all aspects of the CPUs responsiveness and access speed for task execution. CFS also has significant influence in task execution at the Linux kernel. Results show the effectiveness of the proposed scheme in estimating the instantaneous response time on a LG Optimus G smartphone.