基于嵌入式 LINUX系统的实时进程调度算法的研究

摘要

RTOS（实时操作系统）是嵌入式计算机中的核心软件，对于嵌入式操作系统的应用开发，LINUX系统的优势明显，因此在高校和企业的研究领域中被广泛使用。这些年嵌入式技术快速发展，其中RTOS的实时性能和可靠性等方面要求越来越高。这里主要研究的对象是嵌入式LINUX系统，它在实时性能和可靠性方面表现一直不错，但是传统的策略都存在一定的冗余度。对软实时系统的进程调度算法进行优化研究，设计出新的优化算法。通过实验取50个数据运算结果，对价值完成率和进程完成率进行分析，优化以后的算法大大提升了LINUX系统的效率。%RTOS ( real-time operating system) is the core software in embedded computer.For applying and developing embedded operat-ing system, Linux system has distinct advantages, so it is widely used in research field of universities and enterprises.Nowadays the embed-ded technology develops rapidly, among which the requirement of real-time performance and reliability of RTOS calls for high quality.The main subject studied in this paper is the embedded Linux system.Its performance in terms of real-time performance and reliability has been good, but the traditional strategies all have some redundancy, so we study the optimisation of process scheduling algorithm for soft real-time system, and design a new optimisation algorithm.Through examination we obtain 50 data operation results, and analyse their value completion rate and process completion rate.The optimised algorithm greatly improves the efficiency of Linux system.