基于双层调度框架的开放式实时系统非实时应用调度

Scheduling approach for non real-time applications in open real-time system based on two-level scheduling scheme

在开放式实时系统中,多类型实时和非实时应用同时并存,这给系统调度机制带来了新的需求和挑战。对一种开放式实时系统调度机制进行了简单的介绍,指出了非实时应用调度时不可抢占区可能影响系统可调度性,并提出了一种解决方案,弥补了原有调度机制的缺点,完善了开放式实时系统的双层调度框架,保证了开放式实时系统并存多类型实时及非实时应用的可调度性。

In an open real-time system, the coexistence of different kinds of real-time and non real-time applications makes the system scheduling mechanism face new requirements and challenges, One scheduling mechanism of the open systems was introduced, and that the nonpreemptable sections may influence system schedulability in non real-time applications scheduling was pointed out. And then, a scheme which can remedy the limitations about the previous scheduling scheme was presented and the two-level scheduling scheme of open real-time system was improved. Ultimately, the schedulability of hard real-time applications, soft real-time applications and non real-time applications was guaranteed.