| 基于多参数的μC/OS-Ⅱ任务优先级和调度方法 |
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| 引用本文： | 周本海,王溪波,乔建忠,沈国文.基于多参数的μC/OS-Ⅱ任务优先级和调度方法[J].计算机工程,2007,33(21):28-30. |
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| 作者姓名： | 周本海 王溪波 乔建忠 沈国文 |
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| 作者单位： | 东北大学信息科学与工程学院，东北大学信息科学与工程学院，东北大学信息科学与工程学院，东北大学信息科学与工程学院 沈阳110004，沈阳110004，沈阳工业大学信息科学与工程学院，沈阳110023，沈阳110004，沈阳110004 |
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| 摘 要： | 在μC/OS-Ⅱ进行实时任务调度时，可以使用单一的调度算法分配任务优先级。优先级判定标准的片面性、“错过率”较高的截止期，影响了μC/OS-Ⅱ的实时调度性能。该文提出了多参数任务优先级分配策略和μC/OS-Ⅱ任务的调度方法，实验证明，该方法截止期的平均错过率为60.1%，有效地改善了μC/OS-Ⅱ的实时调度性能。
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| 关 键 词： | μC/OS-Ⅱ 实时任务 优先级 多参数 截止期错过率 |
| 文章编号： | 1000-3428（2007）21-0028-03 |
| 修稿时间： | 2007-06-19 |
Task Priority and Scheduling Method Based on Multi-parameter in μC/OS-Ⅱ |
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| ZHOU Ben-hai,WANG Xi-bo,QIAO Jian-zhong,SHEN Guo-wen.Task Priority and Scheduling Method Based on Multi-parameter in μC/OS-Ⅱ[J].Computer Engineering,2007,33(21):28-30. |
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| Authors: | ZHOU Ben-hai WANG Xi-bo QIAO Jian-zhong SHEN Guo-wen |
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| Affiliation: | 1. School of Information Science and Engineering, Northeastern University, Shenyang 110004; 2. School of Information Science and Engineering, Shenyang University of Technology, Shenyang 110023 |
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| Abstract: | When the real-time tasks are scheduled, μC/OS-Ⅱ takes use of single algorithm to assign the priority of tasks. Because of the singularity of determinant standard of priorty, the high deadline missing ration of real-time tasks influences the real-time scheduling performance seriously. This paper advances the assigning policy of priority of multi-parameter tasks and the task scheduling method in μC/OS-Ⅱ. Experimental results show that DMR of multi-parameter scheduling algorithm is 60.1%, and improvement of real-time scheduling performance. |
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| Keywords: | μC/OS-Ⅱ real-time task priority multi-parameter deadline missing ration(DMR) |
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