摘要： Linux操作系统在嵌入式实时系统中得到了广泛的应用,有效地提高Linux有限的实时性能是一个重要问题,Linux内核调度器实时性能的改进又是其中的关键。该文分析了Linux操作系统调度器的工作机理,指出了影响其实时性能的原因,详细地描述了实时性改进的方案和实现,并给出了改进后的测量结果及评价。

关键词: 实时系统, Linux, 调度器, 调度延迟, 可抢断内核

Abstract: This paper presents the study of the latency behavior of the Linux OS. The authors identify that the scheduler latency is the major cause of Linux OS’ non-real-time. This paper first analyzes the mechanism of Linux scheduler, and then describes the specific design and implementation of its improvement. Finally, the simulation results and the estimation are represented.

中图分类号: 

• TP316