摘要： 嵌入式应用系统通常对实时性要求较高，Linux是一个通用操作系统，将它应用于嵌入式实时环境有许多缺点和不足。文章对Linux的分时特性作了分析，对Linux的中断延迟和上下文切换性能作了测试，指出造成实时性差的原因，最后提出了改善Linux嵌入式系统实时性的方案。

关键词: 嵌入式系统, 实时系统, Linux

Abstract: Linux is a universal operating system, there are many disadvantages when it applied to embedded real-time environment. Therefore, the paper analyses some time-sharing characteristic of Linux, makes some measurements to interrupt delay and context shift performance of Linux operating system, and points out causation of resulting weak real-time performance, finally, affords some solutions to improve real-time performance of Linux embedded system.

中图分类号: 

• TP316.81