系统域网络基于消减策略网络断层扫描方法

发布时间：2018-06-12 04:53

本文选题：性能测量 + 网络断层扫描　；参考：《计算机科学与探索》2016年01期

【摘要】：系统域网络是高性能计算机、数据中心的重要组成部分,当前系统域网络存在网络规模庞大,内部链路繁多,网络流量行为复杂和各种应用对网络性能状况敏感度高等特点,致使采用传统网络断层扫描方法进行性能测量的计算复杂度呈指数级增长。针对上述问题提出了一种基于消减策略的网络断层扫描方法(network tomography based on reduction strategy,NTRS)。该方法提出了预处理原则对实际物理拓扑进行策略约束,充分利用内部链路已知的性能信息缩小性能测量网络区域和关键链路覆盖,依据测量结果计算链路性能协方差,筛除性能状况较好的链路集合,实现链路数量的有效约简,进而很大程度上提高了网络诊断的准确性。通过模拟实验验证了NTRS方法的有效性,实验结果表明该方法能缩小链路性能参数的测量规模,降低计算的复杂度。
[Abstract]:The system domain network is an important component of high performance computer and data center. The current system domain network has the characteristics of large network scale, many internal links, complex network traffic behavior and high sensitivity of various applications to network performance, which results in the complexity of performance measurement using traditional network layer scanning method. Exponential growth. A network tomography (network tomography based on reduction strategy, NTRS) method based on subtraction strategy is proposed to solve the above problem. The method proposes a preprocessing principle to restrict the actual physical topology, and make full use of the known performance information of the internal link to reduce the performance measurement network area and to reduce the performance measurement network area. Key link coverage, the link performance covariance is calculated according to the measurement results, the link set with good performance is screened, the link number is effectively reduced, and the accuracy of the network diagnosis is improved to a great extent. The effectiveness of the NTRS method is verified by simulation experiments. The experimental results show that the method can reduce the link performance parameters. The scale of the measurement reduces the complexity of the calculation.
【作者单位】：国防科学技术大学计算机学院;
【基金】：国家自然科学基金~~
【分类号】：TP393.06

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