Linux内核中拥塞控制算法的比较分析  

Analysis and Comparison of Congestion Control Protocol in Linux Kernel

作　　者：骆金维 李春飞 

机构地区：[1]广东创新科技职业学院计算机与通信系,广东东莞523960 [2]广东松田职业学院,广东广州511370

出　　处：《江汉大学学报（自然科学版）》2015年第4期353-358,共6页Journal of Jianghan University：Natural Science Edition

基　　金：广东省高职院校信息技术类教育教学指导委员会课题(XXJS-2013-2025)

摘　　要：采用网络测试床的实验研究方法,在Linux网络测试床上对内核中的Cubic、Htcp、Hybla、Westwood和Veno这5种拥塞控制协议在不同的网络环境下就链路利用率、RTT公平性和TCP友好性3个性能指标进行测试实验,分析实验结果,评价这些算法的优劣以及局限性。在此基础上结合Cubic和Veno,设计并实现了一种新的环境自适应拥塞控制协议CVTCP,对其进行了性能评价测试。实验结果表明,CVTCP在RTT公平性和TCP友好性没有明显下降的同时,在不同的网络环境下都能获得较高的链路利用率,具有很好的环境自适应性。Based on testbed network experimental research, investigated five congestion control protocols in Linux kernel, such as Cubic, Htep, Hybla, Westwood and Veno in different network environments. The link utilization, RrIT fairness and TCP friendliness were compared. Then analyzed the experiment results, and evaluated the advantage and disadvantage of these algorithms. On this base, considering Cubic and Veno, a new environmental adaptive congestion control protocol, named CVTCP has been designed and tested. The experimental results showed, the link utilization rate was fairly high without obvious reducing RTT fairness and TCP friendliness, the CVTCP has good environmental adaptability.

关 键 词：网络测试床 拥塞控制协议 性能评估 链路利用率 RTT公平性 TCP友好性 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]