摘要
为了对比分析嵌入式实时Linux系统和嵌入式Linux系统的实时性能差异,提出了软硬件协同测试的思想,以任务响应时间和中断响应时间为切入点,依托软件编程和硬件辅助设备分别测试了二者的实时性能。测试结果表明,经过实时化改造后的Linux系统其实时性能较标准Linux有了很大改善,尤其是在有背景负载情况下这种改善更为明显。分别给出了软件和硬件测试的原理和方法,通过两者测试结果的对比分析,相互验证了测试结果的有效性和合理性。
To analyze the real-time performance of embedded real-time Linux systems and embedded Linux systems, a new software-hardware co-measuring thought is proposed, which means measuring the real-time performance from task response time and interrupt response time by programming and hardware utilities respectively. The measured results show that the real-time Linux has better real-time performance than the standard one, especially in the environment with lots of background tasks. All the theories and ways of software measuring and hardware measuring are given, and both of the results obtained from the two kinds of way are verified each other.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2007年第8期1385-1388,1401,共5页
Systems Engineering and Electronics
基金
空军工程大学工程学院优秀博士论文创新基金
关键词
实时系统
性能分析
软硬件协同测试
嵌入式系统
real-time systems
performance analysis
software-hardware co-measuring
embedded systems
