Linux实时化方法研究与一种实现

标准Linux对实时应用提供了有限的支持。为了改进Linux的实时性能,详细分析了目前Linux实时化的主要技术方法和研究进展,通过从内核抢占机制、中断控制、细化时钟粒度及实时调度策略几方面深入研究,实现了一种Linux内核实时方案。实验结果显示,所做改进以不大的代价有效地提高了Linux的实时性能。同时指出了方案的不足和今后的研究方向。

Research of Modifications and Implementing of Real-time Support of Linux

Linux provides finite support for applications with real-time constraints.In order to improve Linux's real-time performance,both approaches and techniques to enhance the real-time capability of Linux and achievements of this object are discussed in detail.The real-time support of Linux kernel is studied and implemented through four aspects:kernel preemption,interrupt control,high resolution timer and real-time scheduling policy.Experiments show that the improvement provides good real-time capability on Linux with less cost.As the same time,the shortcoming of the scheme is pointed out and the development direction in the future is discussed.