面向InfiniBand数据中心的区别化传输层带宽划分机制

数据中心已经成为提供资源和服务的重要平台,在虚拟化基础上部署的多种应用对网络性能提出了更加严格和多样化的需求,从而促使改变以传统TCP为中心的传输层结构.文中从数据中心环境的特性出发,归纳得到改进数据中心网络传输层设计的3个方向.在深入剖析InfiniBand(IB)互联传输优化相关技术的基础上,文中提出了一种更好的支持网络可感知、应用可区分、策略可管理的数据中心网络新型传输控制模型.文中对IB传输控制核心的IB拥塞控制算法及其参数进行了深入的分析,证明了在流级通过区别化的拥塞控制参数配置能够实现成比例的带宽划分.最后,在真实系统中的实验验证了通过参数的动态配置能够保持租户级的公平带宽共享,更好支持云数据中心的带宽隔离需求.     

CRSG： A congestion control routing algorithm for security defense based on social psychology and game theory in DTN

The inherent selfishness of each node for the enhancement of message successful delivery ratio and the network overall performance improvement are reflected in the contradiction relationship of competition and cooperation in delay/disruption tolerant networks (DTN). In particular, the existence of malicious node aggravates this contradiction. To resolve this contradiction, social relationship theory and group theory of social psychology were adopted to do an in-depth analysis. The concrete balancing approach which leveraged Nash equilibrium theory of game theory was proposed to resolve this contradiction in reality. Thus, a new congestion control routing algorithm for security defense based on social psychology and game theory (CRSG) was put forward. Through the experiment, this algorithm proves that it can enhance the message successful delivery ratio by more than 15% and reduce the congestion ratio over 15% as well. This algorithm balances the contradiction relationship between the two key performance targets and made all nodes exhibit strong cooperation relationship in DTN.