Evaluating Power Consumption and Real-time Performance of Android CPU Governors
안드로이드 CPU 거버너의 전력 소비 및 실시간 성능 평가

Sungwoo Tak
2016 The Journal of the Korean Institute of Information and Communication Engineering  
Android CPU governors exploit the DVFS (Dynamic Voltage Frequency Scaling) technique. The DVFS is a power management technique where the CPU operating frequency is decreased to allow a corresponding reduction in the CPU supply voltage. The power consumed by a CPU is approximately proportional to the square of the CPU supply voltage. Therefore, lower CPU operating frequency allows the CPU supply voltage to be lowered. This helps to reduce the CPU power consumption. However, lower CPU operating
more » ... equency increases a task's execution time. Such an increase in the task's execution time makes the task's response time longer and makes the task's deadline miss occur. This finally leads to degrading the quality of service provided by the task. In this paper, we evaluated the performance of Android CPU governors in terms of the power consumption, tasks's response time and deadline miss ratio. 키워드 : 안드로이드 거버너, 저전력, 실시간, 동적 전압 주파수 조절
doi:10.6109/jkiice.2016.20.12.2401 fatcat:5phf6xvbn5gg3nxjv52w5f2aba