KLinux:基于开源Linux的混合实时操作系统  

KLinux:Hybrid real-time open-source Linux operating system

作　　者：王继刚[1,2] 郑纬民[1] 钟卫东[2] 李翌[2] 

机构地区：[1]清华大学计算机科学与技术系,北京100084 [2]中兴通讯股份有限公司中心研究院,成都610041

出　　处：《清华大学学报（自然科学版）》2009年第7期1028-1031,共4页Journal of Tsinghua University(Science and Technology)

基　　金：国家"八六三"高技术项目(2004AA1Z2351)

摘　　要：多媒体及高速网络技术的发展,大大扩展了应用的需求,很多应用不仅具有实时特性,还要求系统提供丰富的服务和可扩展能力。该文设计开发出一种混合实时操作系统——KLinux。KLinux基于开源Linux,在内核架构、混合实时调度,以及错误处理等方面进行了改造。实验结果表明:改进后Linux内核在任务调度、上下文切换、CPU运算等方面的实时性能分别提高了253%、177%、255%,同时支持内核态实时应用和用户态非实时应用的双态混合开发,可满足当前绝大多数应用的需求。The development of multimedia applications and high-speed networks has significantly increases the application requirements. Many applications not only have strict real-time requirements, but also require a wide variety of system services. However, Linux limits speeds when a wide range of applications are used. The performance of open-source Linux systems was analyzad to develop a hybrid real-time Linux operating system （KLinux）. The kernel architecture design emphasizes hybrid real-time scheduling and fault handling. Tests show that these improvements effectively enhance the real-time capability of the Linux kernel. Task scheduling is increased by 253%, context switching by 177% and CPU speed by 255%. KLinux also allows real-time and non-real-time applications to coexist, so it can handle most applications.

关 键 词：混合实时操作系统 实时调度 可抢占核心 错误处理 SMP 

分 类 号：TP316[自动化与计算机技术—计算机软件与理论]