Linux实时性研究及其中断进程化的实现  

Research on Real-time Linux and Implementation of Interrupt in Process

作　　者：洪雪玉[1] 张凌[1] 陈宝钢[1] 许宪成[1] 

机构地区：[1]华南理工大学广东省计算机网络重点实验室,广州510640

出　　处：《计算机工程》2007年第10期64-65,94,共3页Computer Engineering

摘　　要：Linux属于通用的分时操作系统,因此将它应用于实时系统领域必然存在一些不确定性问题,如内核不可抢占、时钟粒度粗糙、缺乏有效的实时调度策略等。为了解决这些问题,出现了一些如RT-Linux、Kurt-Linux、Hardhat-Linux等Linux实时性研究项目。文章在对Linux实时性研究的基础上,介绍了中断进程化的研究工作和实验结果。结果表明这种改进是显著的,较大地减少了内核的不确定延迟。The Linux kernel techniques, such as non-interruptible kernel, coarse-grained time mechanism and lack of effective real-time scheduler etc., can＇t well support the confirmability which is the basic characteristic of real-time operating system. Much research has been done on the real-time Linux in the world. In this paper, the shortcomings of Linux kernel when applied to real-time system and the relevant solutions implemented in some famous Linux projects, including RT-Linux, Kurt-Linux, and Hardhat-Linux, are introduced. Research on implementing interrupt in process is introduced and the final experiment shows that the research is effective and significant.

关 键 词：实时系统 LINUX 中断进程化实现 确定性 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]