基于容错技术的优先级反转研究

Research on priority inversion based on fault-tolerant

优先级反转是实时系统中出现最多的问题。为了防止这种现象的发生,目前经常采用的方法是优先级继承和优先级置顶。但是,它们在特定情况下也存在缺陷。容错技术是提高系统可靠性的重要保障,利用容错技术对优先级继承进行扩展,可以更好地解决优先级的反转问题,保障了系统的实时性能。

Priority inversion is the most problem in the real-time system. At present, priority inheritance and priority ceiling are often adopted to prevent the phenomenon of priority inversion. However, the two ways have some disadvantages in a given situation. So fault-tolerant is adopted to improve the reliability of the system. This paper expanded priority inheritance based on fault-tolerant to allow a better solution to the problem of priority inversion and ensured the real-time performance of the realtime system.