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数据中心中TCP连接建立过程的优化方法 被引量:4

Optimization of the TCP connection initiating process in data centers
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摘要 针对数据中心中由于SYN包丢失而引起的TCP连接被延迟从而错过任务时间限制的问题,在无需更换现有设备以及无需修改应用和TCP的前提下,提出一种基于加权随机早期检测(WRED)协议的TCP连接初始化的优化方法。该方法解决了连接优化的三个关键问题:如何识别和标记SYN包,如何在交换机上为SYN包预留空间以及需要预留多少空间。与原TCP相比,优化后TCP连接建立的时间极大地减少。实验表明TCP连接初始化优化方法可以解决任务错过规定时间限制的问题。 An SYN packet might be dropped when initiating a Transmission Control Protocol(TCP) connection in data centers, causing the tasks missing the expected deadline; accordingly, without changing the existing devices, applications and the TCP itself, a viable mechanism based on Weighted Random Early Detection(WRED) was proposed to avoid the drop of SYN packets. Three related key problems were solved by the proposed method: how to mark and recognize the SYN packets;how to reserve space for the SYN packets in switches; how much space is required for reserving. Compared with the original TCP, the TCP connection establishment time was greatly reduced after optimizing. The simulation results show that the connection initialization optimization method can solve the problem of tasks missing the expected deadline.
出处 《计算机应用》 CSCD 北大核心 2017年第8期2157-2162,共6页 journal of Computer Applications
基金 四川教育厅基金资助项目(16ZB0064) 四川师范大学基金项目(项目名称:数据中心网络的研究和优化)~~
关键词 数据中心 传输控制协议 三次握手 SYN分组 data center Transmission Control Protocol(TCP) three-way handshake SYN packet
作者简介 夏羽(1983-),男,云南昆明人,讲师,博士,主要研究方向:高性能交换、数据中心网络;(通信作者电子邮箱rainsia@163.com) 廖苹秀(1983-),女,四川乐山人,工程师。硕士,主要研究方向:协议分析、网络设备测试; 崔雷(1982-),男,河南郑州人,工程师,主要研究方向:高性能交换机设计与实现、网络接口。
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