| 一种用于透明计算的多媒体I/O 访问控制方法 |
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| 引用本文： | 高 原,张尧学,周悦芝.一种用于透明计算的多媒体I/O 访问控制方法[J].湖南大学学报(自然科学版),2013,40(3):93-98. |
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| 作者姓名： | 高 原 张尧学 周悦芝 |
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| 作者单位： | 清华大学计算机科学与技术系,北京,100084 |
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| 基金项目： | 国家核高基重大专项项目，国家"863"高技术项目 |
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| 摘 要： | 针对实时媒体类I/O访问是透明计算系统性能瓶颈的问题,提出了一种用于透明计算的多媒体I/O访问控制方法CAVIO(Classification and Aggregation-based Vir-tual I/O mechanism).CAVIO通过对混杂类型I/O进行分类进而优先处理多媒体I/O,通过聚合小I/O减少I/O的平均路径长度和跨网络处理开销,通过并发处理网络传送提高虚拟磁盘I/O的吞吐率.实验表明,该方法对透明计算系统的多媒体I/O处理性能有显著提高.
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| 关 键 词： | 虚拟I/O 分类聚合 透明计算 多媒体 |
A Multimedia I/O Access Control Policy for Transparent Computing |
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| GAO Yuan,ZHANG Yao-xue,ZHOU Yue-zhi.A Multimedia I/O Access Control Policy for Transparent Computing[J].Journal of Hunan University(Naturnal Science),2013,40(3):93-98. |
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| Authors: | GAO Yuan ZHANG Yao-xue ZHOU Yue-zhi |
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| Institution: | (Department of Computer Science and Technology,Tsinghua Univ,Beijing 100084,China) |
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| Abstract: | To address the problem that the real-time multimedia I/O is the bottleneck of the transparent computing system performance, this paper proposed a multimedia I/O access control policy for transparent, called CAVIO (Classification and Aggregation-based Virtual I/O mechanism).CAVIO classifies I/O requests by their types to give the multimedia I/O a high priority, aggregates the small I/O to reduce the average path length and the network processing overhead, and carries out network transmission concurrently to improve the disk I/O throughput over network.The experiment results demonstrate that CAVIO significantly improves the multimedia I/O processing performance in transparent computing system. |
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| Keywords: | virtual I/O classification and aggregation transparent computing multimedia |
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