改善Linux核心可抢占性方法的研究与实现  

Research and Implementation on Improving Kernel Premempablity of Linux

作　　者：赵慧斌[1] 李小群[1] 孙玉芳[1] 

机构地区：[1]中国科学院软件研究所,北京100080

出　　处：《计算机学报》2004年第2期244-251,共8页Chinese Journal of Computers

摘　　要：随着开放源码的Linux应用逐渐普及 ,改进Linux的性能 ,使其适用于实时领域成为一个极具潜力的发展方向 .在参考了与此相关的研究的基础上 ,该文对改善Linux核心可抢占性的方法提出了 3个改进措施 :中断管理进程化、改进互斥锁的机制和增加互斥锁协议支持 ,并在Linux 2 .2系列的核心上加以实现 .试验证明 ,这些改进达到了减少系统的抢占粒度 。Using an open source system, Linux, as the supporting OS is more and more popular in many fields, and it is regarded as a potential aspect by many users to improve Linux performance to satisfy the real-time requirements. Inspired mostly by some real time improvements of Linux, the article gives rise to three methods to improve the prempatibility of Linux kernel: tasked interrupt handling, modified mutex mechanism and mutex protocol support. The authors also describe the implementation under version of 2.2 series. The modification is a successful effort to decrease the grain of kernel trap and increase the precision of schedule.

关 键 词：LINUX操作系统 可抢占性 抢占粒度 互斥锁 进程 

分 类 号：TP316[自动化与计算机技术—计算机软件与理论]