RFRTOS:基于Linux的实时操作系统  

RFRTOS: A Real-Time Operation System Based on Linux

作　　者：李小群[1] 赵慧斌[1] 叶以民[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：《软件学报》2003年第7期1203-1212,共10页Journal of Software

摘　　要：随着实时应用领域的逐渐扩大,不仅传统嵌入式系统的需求日益紧迫,而且这种情况也渗透到桌面环境.为了满足国内用户在这方面的广泛需求,基于红旗Linux操作系统,开发了RFRTOS实时操作系统.主要从实时调度策略、内核抢占机制、细粒度定时器几方面讨论了RFRTOS的实时支持.实验结果表明,所作改进有效地提高了Linux的调度精度,满足了软实时方面的需求.Applications with real-time constraints are not only growing in the field of embedded system, but gaining popularity in the desktop environment as well. In order to satisfy the need of users in these aspects, RFRTOS real-time OS based on Redflag Linux is developed. The real-time support about real-time scheduling, preempted kernel, and fine-grain timer in RFRTOS is mainly discussed. The experimental results on RFRTOS show that the improvement gives a better result for applications with real time constraint than original Linux kernel.

关 键 词：实时操作系统 时钟管理 预留资源 实时调度 可抢占核心 SMP 

分 类 号：TP316[自动化与计算机技术—计算机软件与理论]