| P2P网络交互式视频点播服务的性能改进 |
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| 引用本文： | 赵建明,姚念民,石革荣.P2P网络交互式视频点播服务的性能改进[J].福建师大福清分校学报,2012(5):29-36,41. |
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| 作者姓名： | 赵建明 姚念民 石革荣 |
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| 作者单位： | 福建师范大学福清分校数学与计算机科学系;哈尔滨工程大学计算机科学与技术学院 |
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| 摘 要： | P2P网络交互式视频点播服务中改善用户体验的关键在于减少跳转延时及提高本地缓存的命中率。本文在vEB树基础上增加了跳转到概率较大片段节点的链接,对LRU和LFU算法进行改进提出了基于价值的缓存替换算法。在NS-2环境下进行了模拟实现,实验数据表明改进后的vEB树结构有效地减少节点的跳转延迟,基于价值的缓存替换算法提高了节点片段的命中率。
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| 关 键 词： | P2P 交互式视频点播 vEB 缓存替换算法 |
On the Performance Improvement of IVoD Service in P2P Networks |
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| ZHAO Jianming,YAO Nianmin,SHI Gerong.On the Performance Improvement of IVoD Service in P2P Networks[J].Journal of Fuqing Branch of Fujian Normal University,2012(5):29-36,41. |
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| Authors: | ZHAO Jianming YAO Nianmin SHI Gerong |
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| Institution: | 1.Fuqing Branch of Fujian Normal University,Fuqing Fujian 350300; 2.College of computer Science and Technology,Harbin Engineering University,Haerbin Heilongjiang 150001) |
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| Abstract: | To improve the user experience of interactive VoD service in P2P networks,the key lies in reducing the jump latency and increasing the cache hit rate.The paper suggests creating links to nodes with high jumping probabilities based on the vEB tree structure and proposes the cache replacement algorithm based on value,a further improvement of LRU and LFU algorithm.Experimental results demonstrate the above proposals effectively solve the problems of jump latency and increase the cache hit rate in the simulation environment made by NS2. |
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| Keywords: | P2P IVoD vEB cache replacement algorithm |
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