嵌入式Linux内核实时性测试研究  

The research on the real-time performance test of embedded Linux kernel

作　　者：介龙梅[1] 徐有军[1] 邵国强[1] 

机构地区：[1]大庆师范学院计算机科学与信息技术学院,黑龙江大庆163712

出　　处：《智能计算机与应用》2016年第3期105-107,共3页Intelligent Computer and Applications

基　　金：黑龙江省教育厅科学技术研究项目(12533002);大庆师范学院科学研究基金项目(12ZR08)

摘　　要：介绍了嵌入式Linux内核实时性问题的背景及其在实际中的应用。提出了实时性测试的2个主要指标:进程切换时间和中断延迟时间。前者测试包括2个方案:一是通过程序测量父子进程切换时间,二是借助Lmbench工具测量进程上下文切换时间;后者则采用测量时钟中断延迟的方法来实现。针对3个测试实验,分别给出了方案设计、方案实现和测试结果与分析。最后在分析和实验的基础上得出几点重要结论,并给出2种实时性的改进方案。The paper proposes the background and application of the real-time performance of embedded Linux kernel. Time delay fromone process to another and interrupt delay are two main factors relating to real-time performance test. The former one includes twosolutions： one is to test the time delay from father process to son process or on the contrary, another is testing the time delay betweencontexts by Lmbench tool; the latter one is implemented by testing the interrupt delay. The solution design, solution implementation, testresult and analysis for the three test experiments are described individually. After that, several important solutions based on analysis andexperiments are pointed out, as well as the two improvement solution for real-time performance.

关 键 词：嵌入式LINUX 实时性 进程调度延迟 中断延迟 

分 类 号：TP393.02[自动化与计算机技术—计算机应用技术]