计算机科学 ›› 2013, Vol. 40 ›› Issue (4): 47-50.
曹光权,张子文,孙志刚,陈洪义,胥庆杰
CAO Guang-quan,ZHANG Zi-wen,SUN Zhi-gang,CHEN Hong-yi and XU Qing-jie
摘要： 在InfiniBand(IB)体系网络中,拥塞控制(Congestion Control,CC)能够确保高性能和资源利用率,避免拥塞传播对于无辜流的性能损害。首先分析IB网络采用的ECN(Explicit Congestion Notification)拥塞控制机制,然后提出一种集中控制的多点流量发生器CTBG(Central Traffic Behavior Generator),它提供了对流量的统计能力。为了进一步剖析IB网络拥塞控制的细粒度行为,提出了基于ibdump和wireshark的观测方法。实验表明,提出的测量机制能够细粒度、低开销地观测IB网络的拥塞控制行为,其对拥塞控制机制的研究具有重要的指导意义。
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