| 嵌入式实时操作系统的分析评测方法 |
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| 引用本文： | 张文君,陈香兰,李曦.嵌入式实时操作系统的分析评测方法[J].计算机系统应用,2015,24(1):28-34. |
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| 作者姓名： | 张文君 陈香兰 李曦 |
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| 作者单位： | 中国科学技术大学计算机科学与技术学院,合肥,230001 |
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| 摘 要： | 使用WCET(Worst-case execution time)分析工具Bound-T,分析典型实时操作系统(RTMES和uClinux)的关键模块代码,在系统运行在硬件上之前分析其机器码,给出整体系统的最坏执行时间.在系统的WCET达到要求之后,再通过实验使用benchmark,评测操作系统的典型实时性能指标,给出两个嵌入式实时操作系统的实时性能对比,并分析RTEMS(Real Time Executive for Multiprocessor Systems)的优势所在.
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| 关 键 词： | 嵌入式操作系统 实时 最坏执行时间 |
| 收稿时间： | 2014/4/28 0:00:00 |
| 修稿时间： | 2014/5/19 0:00:00 |
Analysis and Evaluation of Embedded Real-Time Operating System Methods |
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| ZHANG Wen-Jun,CHEN Xiang-Lan and LI Xi.Analysis and Evaluation of Embedded Real-Time Operating System Methods[J].Computer Systems& Applications,2015,24(1):28-34. |
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| Authors: | ZHANG Wen-Jun CHEN Xiang-Lan and LI Xi |
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| Affiliation: | School of Computer Science and Technology, University of Science and Technology of China, Hefei 230001, China;School of Computer Science and Technology, University of Science and Technology of China, Hefei 230001, China;School of Computer Science and Technology, University of Science and Technology of China, Hefei 230001, China |
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| Abstract: | In this paper, we use WCET(Worst-case execution time) tool, Bound-T, to analyze the key modules of typical real-time operating system (RTEMS and uClinux) affecting real-time performance. The WCET tool analyzes machine code to give the whole system's WCET before it runs on hardware. When WCET reaches our requirements, we evaluate the system real-time performance through benchmark. We compare the performance of two real-time operating systems and explain the advantages of RTEMS (Real Time Executive for Multiprocessor Systems). |
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| Keywords: | embedded operating system real-time worst-case execution time |
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