A Research on Weight Adjustable Dynamic Scheduling Strategy

The complexity of embedded system has been increasing for achieving more intelligent work, which means more tasks need to be finished and the scheduling strategy based on one task character can’t satisfy the cost of system. This paper introduces a strategy that focus on both task’s time and value characters, and their weight in priority can be adjusted when the load of system changed to improve system performance. Compared with the performances of EDF (Earliest Deadline First), HVF (Highest Value First) and EDV (Earliest Deadline Value), this strategy could improve the system total value and the critical priority task’s achieving rate.