挪用周期

Existing methods of scheduling both periodic and aperiodic tasks are all based on RM scheme. Among them, stealing slack time from periodic tasks has been proved to be an optimal method.

已有的解决混合任务调度问题的方法都是基于速率单调策略的，其中从周期任务"挪用时间"的算法被证明优于其他所有算法。

However, the RM scheme limits the processor utilization, therefore limits the stealable time of periodic tasks.

但是，速率单调算法限制了处理器的使用率，从而使周期任务的可&挪用&时间受到限制。

Because EDF algorithm with a unified scheduling periodic and sporadic tasks in real-time is optimal. By analyzing and calculating EDF scheduling process of idle time and the maximum time can be stealed, Put forward a schedulability test of unified scheduling periodic and sporadic tasks with EDF policy.

通过分析和计算EDF算法调度偶发任务所占用的空闲时间和挪用时间，以及调度后对空闲时间和最大可挪用时间的影响，提出一种采用EDF算法统一调度硬实时周期任务和偶发任务时的可调度性充分判定算法。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。