Abstract:
Linux is designed to be a general-purpose operating system, it is not suitable for real-time applications, but because of its open source, many solutions have been put forward to enhance its real-time ability. Inspired mostly by Gettimeofday(GTOD), the paper gives a method based on timer management improvement for high resolution timers. Experiments on the modified OS show that the improvement gives a better result for applications with real time constraints than original Linux kernel.
Key words:
real-time OS,
clock source,
clock event device
摘要: Linux是一种通用操作系统,但不适合实时应用。针对上述问题,通过对Linux时钟系统管理方面的研究,提出一种针对时钟的改进策略,以此为基础,根据实时应用的特点设计高精度定时器。实验证明,改进方案能有效提高Linux的时钟精度,满足实时方面的 需求。
关键词:
实时操作系统,
时钟源,
时钟事件设备
CLC Number:
HU Qiang; CAI Zi-xing. Linux Real-time Schme Based on Enhanced Time System[J]. Computer Engineering, 2009, 35(11): 271-273.
胡 强;蔡自兴. 一种基于改造时钟系统的Linux实时化方案[J]. 计算机工程, 2009, 35(11): 271-273.