| 基于接收方的TCP批量数据发送限制因素诊断 |
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| 引用本文： | 吕国晗,陆俊秀,申文超,李星.基于接收方的TCP批量数据发送限制因素诊断[J].清华大学学报(自然科学版),2009(4). |
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| 作者姓名： | 吕国晗 陆俊秀 申文超 李星 |
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| 作者单位： | 清华大学电子工程系;清华大学网络中心; |
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| 基金项目： | 国家“八六三”高技术项目(2006AA01Z201130) |
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| 摘 要： | 为了提高接收方的数据下载性能,首先需要诊断出数据下载过程中数据发送的主要限制因素。该文给出了一种可在数据接收方诊断传输控制协议(TCP)连接数据发送限制因素的方法。该方法首先使用TCP时间戳选项确定报文间的引发关系,然后获得连接每时刻的飞行字节数,最后根据飞行字节数的变化规律给出数据发送的3种限制因素及其在连接中所占的时间比例。实验床实验验证了该方法的准确性,方法估计误差的平均值小于0.02。P lanetL ab实验验证了方法的有效性。在实验中,该方法还诊断出数据发送受到了收方缓存的限制,而成倍增大收方缓存能使传输速率成倍增大。
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| 关 键 词： | 网络互连技术 传输控制协议（TCP） 故障诊断 |
Receiver-based diagnosis of TCP bulk transfer rate limiting factors |
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| LU Guohan,LU Junxiu,SHEN Wenchao,LI Xing.Receiver-based diagnosis of TCP bulk transfer rate limiting factors[J].Journal of Tsinghua University(Science and Technology),2009(4). |
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| Authors: | LU Guohan LU Junxiu SHEN Wenchao LI Xing |
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| Institution: | 1.Department of Electronic Engineering;Tsinghua University;Beijing 100084;China;2.Network Research Center;China |
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| Abstract: | This paper presents a receiver-based diagnostics method to identify the factors limiting the data transfer during transmission control protocol(TCP) downloads.The TCP timestamp option is used to determine the correspondency between the TCP packets.Then,the inflight bytes are calculated based on the correspondency.Finally,the dynamics of the inflight bytes are used to identify three limiting factors and their durations during data transfers.Testbed experiments indicate that the average estimation errors are ... |
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