Linux系统实时性能增强技术的研究

本文根据Linux和实时系统的特点，研究了影响Linux实时性能的因素，分析了目前流行的增强标准Linux实时性能的技术。通过从细粒度定时器、内核抢占机制及实时调度策略的深入分析与研究，从不同侧面实现了Linux系统的实时支持，并分析各种实时增强技术的不足与应用领域。

Technique of Increasing Real-Time Performance of Standard Linux

In light of the features of Linux and real-time operating system, this paper reseachs the reason of limiting for the standard Linux, analyses the way of increasing the performance in Linux systems. In order to make Linux a perfect real-time operating system, the real-time technique of standard Linux is analysed and studied thought three aspects: Fine-grain Timer, kernel preemption and real-time scheduling policy. At the same time, this paper analyses the shortcoming of the increasing real-time performance scheme and domain of application.