Linux操作系统实时性分析  

Analysis of Linux Real-time Mechanism

作　　者：余兵[1] 黎忠文[1] 

机构地区：[1]厦门大学信息科学与技术学院,福建厦门361005

出　　处：《计算机技术与发展》2007年第9期41-44,47,共5页Computer Technology and Development

摘　　要：随着Linux操作系统在嵌入式实时系统中的广泛应用,有效地提高Linux有限的实时性能是一个重要问题,而Linux内核可抢占调度是实时性能的改进的关键。对Linux内核调度器的工作原理进行了深入分析,并阐述了调度延迟是其实时性不强的原因,然后介绍通过可抢占机制对Linux内核进行改造,测试了改进后的内核的实时性。With the wide application of Linux operation system in embedded real - time system fields, the enhancement of Linux real - time performance becomes more and more important. Preemptive kernel is a decisive condition of a system＇s real - time performance. This paper analyzes of Linux scheduler and presents that the scheduler latency is the major cause of Linux OS＇ non - real - time. Then present a solution to enhance the real - time performance of Linux. In the end, the simulation results are represented.

关 键 词：LINUX 实时性 可抢占内核 调度延迟 

分 类 号：TP316.8[自动化与计算机技术—计算机软件与理论]