基于最小接入保证带宽的数据中心网络带宽分配机制

发布时间：2018-05-13 13:33

本文选题：云计算 + 数据中心网络　；参考：《计算机应用》2017年07期

【摘要】：针对云计算数据中心(DC)网络中多租户间易相互干扰导致应用性能不可预测,预留带宽资源难以保证高网络利用率,从而导致云网络供应商收益损失等问题,提出了基于最小接入保证带宽的数据中心网络带宽分配(MAGBA)机制。MAGBA机制在发送端通过加权公平队列调度租户虚拟机(VM)流量,在接收端基于检测到的接收速率调节TCP流接收窗口,从而为租户VM提供最小接入保证带宽,同时充分利用闲置带宽资源。通过NS2平台仿真,MAGBA机制相比静态资源预留方式能够灵活分配带宽资源,网络吞吐量提升25%。当某些租户产生大量TCP流时,MAGBA机制中其他租户分得的带宽高于现有基于TCP流的带宽分配机制。仿真结果表明,MAGBA机制能够为租户VM提供最小接入带宽保证,避免租户应用受到其他租户通信模式的干扰。
[Abstract]:In order to solve the problems such as mutual interference among multi-tenants in the cloud computing data center (DCC) network, the application performance is unpredictable, it is difficult to ensure high network utilization rate by reserving bandwidth resources, which leads to the loss of cloud network providers' income. In this paper, a data center bandwidth allocation mechanism based on minimum access guaranteed bandwidth is proposed. The MAGBA mechanism dispatches the tenant virtual machine (VM) traffic through a weighted fair queue at the sending end, and adjusts the TCP stream reception window at the receiving end based on the detected reception rate. Thus, the VMs can provide minimum access bandwidth and make full use of idle bandwidth resources. Compared with the static resource reservation mechanism, the NS2 simulation platform can flexibly allocate bandwidth resources and increase network throughput by 25%. When some tenants generate a large number of TCP streams, the bandwidth of other tenants in the MAGBA mechanism is higher than the existing bandwidth allocation mechanism based on TCP streams. The simulation results show that the MAGBA mechanism can guarantee the minimum access bandwidth for the VM of tenants and avoid the interference of other tenant communication modes in the application of tenants.
【作者单位】：重庆大学通信工程学院;
【基金】：国家自然科学基金资助项目(61301119)~~
【分类号】：TP308

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