面向InfiniBand数据中心的区别化传输层带宽划分机制  

Differentiated Transport-Layer Network Bandwidth Allocation for InfiniBand Datacenter

作　　者：张子文[1] 吕高锋[1] 孙志刚[1] 王珵珺 卢锡城[1] 

机构地区：[1]国防科学技术大学计算机学院

出　　处：《计算机学报》2012年第12期2505-2514,共10页Chinese Journal of Computers

基　　金：国家"九七三"重点基础研究发展规划项目基金(2009CB320503)资助~~

摘　　要：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.Datacenters have become the important infrastructure to provide resource and service. The different applications based on virtualization require more rigid and diverse network perform- ance guarantee which motivates us to change traditional TCP-based transmission mechanism in datacenter networks （DCN）. After introducing the inherent characteristic of DCN, we concluded three kinds of insight of the improvement to DCN transport layer. Based on the elaboration of key techniques in IB （InfiniBand） transmission optimization we propose the new-type transmission control model for DCN with the advantage of observable network, differentiated application serv- ices as well as administrable policies. This paper analyze IB Congestion Control （CC） algorithm as the core transmission control in IB and its related parameters. The proportional bandwidth al- location at the flow level is proved based on the differentiated CC parameter settings. In the end, real IB platform is established to verify that tenant-level fair bandwidth share can be maintained based on the dynamic parameter configuration. It obviously supports the bandwidth isolation de- mand in cloud datacenter.

关 键 词：数据中心网络 INFINIBAND 拥塞控制 带宽隔离 传输策略 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]