文章讨论了Linux 作为实时应用操作系统的一些不足，从实现机制上分析了产生这些不足的原因。详细阐述了实时操作系统RTLinux 的实现原理，着重介绍了嵌入式RTLinux 系统的开发过程，并给出了该系统实时性能测试的方法和结果-article discusses the Linux operating system as a real-time application of a number of shortcomings, from the mechanism analysis on the causes of these deficiencies. Detailed real-time operating system RTLinux Principle, highlighting the RTLinux embedded system development process, and the system is real-time performance testing methods and results