Given in this paper is a better real-time task model—periodic multiframe task model, based on the research of real-time tasks. It is proved that this model's schedulibility is better than that of periodic tasks, and its schedulibility is analyzed with the DM scheduling algorithm.%实时系统在航空航天等重要部门的应用非常广泛,而且也极为关键.实时调度及其调度对象——实时任务的研究是实时系统研究的重点之一.在研究周期任务的基础上,给出了一个改进的实时任务模型——周期多帧任务模型.证明了这种模型的可调度性优于周期任务模型,对此任务模型的DM算法的可调度性进行了分析,并给出了其算法实现.
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