MA Chen, XIAO Zhi-bin, ZHANG Jing, et al. Dynamic scheduling strategy for multi priority hybrid tasks in heterogeneous environment of real-time embedded systems[J]. 2016, 35(10): 12-16+19.
MA Chen, XIAO Zhi-bin, ZHANG Jing, et al. Dynamic scheduling strategy for multi priority hybrid tasks in heterogeneous environment of real-time embedded systems[J]. 2016, 35(10): 12-16+19. DOI: 10.13873/J.1000-9787(2016)10-0012-05.
Introduce concept of urgency density and surplus value density
analyze influence of urgency density and surplus value density on priority setting
adjusted the task execution degree of emergency based on weight coefficient and acceleration factor
and dynamic scheduling of hybrid task is achieved based on constructing single directed acyclic graph( DAG) system model. Simulation results show that the proposed scheduling strategy can achieve better task execution efficiency and avoid thrashing even at higher load level.