Title :
Energy-Efficient Task Scheduling and Task Energy Consumption Analysis for Real-Time Embedded Systems
Author :
Yongqi Ge ; Yunwei Dong ; Hongbing Zhao
Author_Institution :
Sch. of Comput. Sci., Northwestern Polytech. Univ., Xi´an, China
Abstract :
As the limitations of energy consumption for real-time embedded systems more strict, it has been difficult to ignore the context switch overhead for Fixed-Priority task with Preemption scheduling (FPP) in multitasking environment. This paper presents a Reducing Context Switches scheduling (RCSS) based on preemption thresholds scheduling for real-time embedded system to decrease system energy consumption. The WCRT model is improved based on considering context switch overhead. In addition, the tasks energy consumption is analyzed. The experimental results show that RCSS can reduce context switches about 9.051‰ and decrease energy consumption about 6.129‰ for given tasks compared to FPP.
Keywords :
embedded systems; energy consumption; power aware computing; scheduling; WCRT model; context switch overhead; energy-efficient task scheduling; fixed-priority task; multitasking environment; preemption scheduling; preemption threshold scheduling; real-time embedded system; reducing context switches scheduling; task energy consumption analysis; Context; Energy consumption; Equations; Moon; Real-time systems; Scheduling; Switches; Context switching; Energy consumption; Preemption thresholds; Worst-case Response time;
Conference_Titel :
Theoretical Aspects of Software Engineering Conference (TASE), 2014
Conference_Location :
Changsha
DOI :
10.1109/TASE.2014.30
