数据中心中的可靠组数据传输

发布时间：2018-08-30 15:12

【摘要】：可靠组数据传输是数据中心中的一个重要传输模式.在可靠组数据传输问题中,有一个数据源,和一个接收端的集合.可靠组数据传输需要把数据从数据源可靠的分发给所有接收端.P2P是一个典型的可靠组数据传输系统,在互联网得到广泛的应用.然而,P2P系统对可靠组数据传输的完成时间没有保障.与互联网不同的是,数据中心有以下特点:1)数据中心的拓扑结构是预先知道的.2)数据中心可以被集中管理,各个结点之间是相互合作的.基于这两个特点,本文对数据中心的P2P系统进行了重要改进.1)通过一个集中控制算法对每个结点的邻居进行选取.2)在某些特定结点进行数据缓存.我们在ns3平台实现了一个P2P系统,并用本文的方法对其进行改进,在BCube(4,1)中传输4GB的数据,BitTorrent需要52s完成所有数据的传输,而本文的方法只需要18s.
[Abstract]:Reliable group data transmission is an important transmission mode in data center. In the problem of reliable group data transmission, there is a data source and a collection of receivers. Reliable group data transmission requires the reliable distribution of data from data sources to all receivers. P2P is a typical reliable group data transmission system, which is widely used in the Internet. However, P2P system does not guarantee the completion time of reliable group data transmission. Unlike the Internet, the data center has the following characteristics: 1: 1) the topology of the data center is known in advance. 2) the data center can be centrally managed and the nodes cooperate with each other. Based on these two characteristics, this paper makes an important improvement on P2P system in data center. 1) A centralized control algorithm is used to select the neighbors of each node. We have implemented a P2P system on the ns3 platform and improved it by using the method in this paper. It takes 52s to transfer the data of 4GB in BCube (4X1), but the method in this paper only needs 18s.
【作者单位】：中国科学技术大学计算机科学与技术学院;微软亚洲研究院;清华大学;
【基金】：国家自然科学基金项目(61033009,61202405)资助安徽省自然科学基金项目(11040606Q52)资助
【分类号】：TP308

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