摘要
从Linux内核实时性、实时调度策略以及时钟细粒度定时器三个方面,对Linux嵌入式实时化技术进行了探讨。在内核中插入抢占点或采用双内核系统,改善Linux的实时性能;通过动态优先级提高实时任务的调度性能;通过增加时钟中断频率或采用实时时钟一次性模式,实现时钟细粒度。
This paper explores the embedded real-time technology of Linux in three aspects of the kernel real-time performance, the real-time scheduling policy and the clock high-resolution timer. The realtime performance is improved by inserting preemptive points or adopting two kernels system. The scheduling performance of real-time tasks is enhanced by the dynamie priority scheduling policy. The clock high resolution is realized by adding the frequency of the timer interrupt or adopting the real-time clock one-shot mode.
出处
《江苏技术师范学院学报》
2006年第2期51-55,共5页
Journal of Jiangsu Teachers University of Technology
基金
江苏技术师范学院科研基金资助项目(KYY04001)
关键词
LINUX
嵌入式系统
实时性
进程调度
Linux
embedded system
real-time performance
process scheduling
