| 一种实时的嵌入式Linux调度策略 |
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| 引用本文： | 王海珍,廉佐政,滕艳平. 一种实时的嵌入式Linux调度策略[J]. 科学技术与工程, 2009, 9(14) |
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| 作者姓名： | 王海珍 廉佐政 滕艳平 |
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| 作者单位： | 黑龙江省齐齐哈尔大学计算机与控制工程学院,计算中心,齐齐哈尔,161006;黑龙江省齐齐哈尔大学计算机与控制工程学院,计算中心,齐齐哈尔,161006;黑龙江省齐齐哈尔大学计算机与控制工程学院,计算中心,齐齐哈尔,161006 |
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| 基金项目： | 黑龙江省教育厅科研项目(11531422)资助 |
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| 摘 要： | 随着Linux广泛应用于嵌入式系统、实时控制等领域,增强Linux内核的实时性变得尤为重要。Linux2.6内核加入了抢占点,可以最大限度地降低内核不可抢占的时间间隔,但嵌入式系统实时性要求较高,因此基于嵌入式Linux(裁减的Linux2.6内核),分析实时调度策略,提出改进的实时调度策略IPEDF,该策略吸取了截止期最早最优先算法的优点,使内核可以在任何时间被抢占。最后对嵌入式Linux和基于IPEDF的嵌入式Linux进行测试,结果表明后者的任务响应时间少,从而进一步提高了嵌入式Linux2.6的实时性。
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| 关 键 词： | 嵌入式Linux 实时 调度策略 IPEDF 最早最优先算法 任务响应时间 |
Research on a Kind of Real-time Embedded Linux Schedule |
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| WANG Hai-zhen,LIAN Zuo-zheng,TENG Yan-ping. Research on a Kind of Real-time Embedded Linux Schedule[J]. Science Technology and Engineering, 2009, 9(14) |
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| Authors: | WANG Hai-zhen LIAN Zuo-zheng TENG Yan-ping |
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| Affiliation: | College of Computer and Control Engineering;Computer Center;Qiqihar University;Qiqihar 161006;P.R.China |
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| Abstract: | As Linux applying widely in the area of embedded system,real-time control,it is more important to strengthen general Linux kernel real-time capability.Preemptive points joined in Linux2.6 kernel,and that reduces extremely non-preemptive time,but embedded system requires higher real-time capability,so real-time schedule is analyzed based on embedded Linux(reduction Linux2.6 kernel),proposed real-time schedule IPEDF(Improved Preempt Earliest Deadline First),which extracted the merit of earliest deadline first... |
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| Keywords: | embedded linux real-time schedule improved preempt earliest deadline first earliest deadline first algorithm task response time |
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