基于ADEOS的RTAI/Linux的研究及其实时性测试  

ON ADEOS-BASED RTAI/LINUX AND ITS REAL-TIME PERFORMANCE TEST

作　　者：甘玲[1] 刘柄宏[1] 

机构地区：[1]重庆邮电大学计算机科学与技术学院,重庆400065

出　　处：《计算机应用与软件》2010年第2期163-165,共3页Computer Applications and Software

摘　　要：针对目前实时Linux的发展现状,对采用双内核方案的实时Linux系统——RTAI进行了研究,以便对RTAI进一步推广。首先对介于RTAI/Linux与硬件之间的资源虚拟层操作系统自适应域环境ADEOS(Adaptive Domain Environment for Operating Systems)进行了剖析,主要包括ADEOS的体系结构,如何在域间传递事件(特别是中断),域在管线中是如何排列的,域是如何处理中断的。然后简略探讨了基于ADEOS的RTAI/Linux的具体实现,最后在系统重负载的情况下测试了标准Linux和基于LXRT模块的RTAI的实时任务响应时间。不仅验证了RTAI的硬实时性,还给出了基于LXRT模块编写RTAI实时应用程序的一般步骤。According to current development of real-time Linux, a research on real-time Linux with dual kernel - RTSI has been carried out in this article, so as to popularise it further. First of all, we analysed in this article the virtual resource layer ADEOS between RTAI/Linux and hardware, mainly including the architecture of ADEOS, the way of the events （particularly interrupts） being propagated among domains, how the domains queue in pipeline and how domains handle the interrupts. And then. we briefly discussed the implementation of an ADEOS- based RTAI/Linux system. At last, we tested the response time of RTAI based on LXRT module and of standard Linux on real-time tasks in condition of heavy load. Apart from verifying the hard real-time performance, generic procedure of programming RTAI application using LXRT module has been provided as well.

关 键 词：LINUX实时性 双内核 ADEOS 管线 RTAI LXRT 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TP316[自动化与计算机技术—控制科学与工程]