混合关键性多核系统调度综述

Mixed Criticality Multicore Systems Scheduling

混合关键性多核系统调度主要考虑划分任务到每个核和任务在核上的调度两个大方面,以满足嵌入式系统安全性和可靠性的需求。由于嵌入式系统在硬件等多方面的约束,混合关键性得到了学术界和企业界的广泛关注,在提高任务调度率和多核系统资源利用率方面展开了许多研究。而不同的任务调度方法和划分方法对提高利用率方面有不同的结果,为此从改善低关键任务的调度、提高每个核的资源利用率、任务执行时的干扰、多核的划分策略等方面,对近年来的混合关键性任务调度进行了详细的分析和总结,并指出了当前研究的不足和未来的研究方向。

The scheduling of mixed criticality multicore system is mainly divided into two majior aspects：dividing tasks into the core and scheduling on it,in order to meet the needs of the security and reliability of embedded system.Due to the constraints of embedded system in hardware, the mixed criticality has been widely concerned in the academic circle and the business community, many researches have been carried out to improve the efficiency of the task scheduling and resource utilization.Different task scheduling methods and classification methods have different results in the improvement of the utilization rate, then improve the scheduling rate, improve the resource utilization rate of each core, the interference of task execution, multi core division strategy and application, fault-tolerant technology, etc., and pointed out the shortcomings of current research and future research directions.