基于改进虚拟机整合算法的虚拟资源管理工具

提出了一种基于分段迭代相关性整合(SICC)的虚拟机整合与放置策略,并将它作为云资源管理工具的核心结构。SICC算法整合了时间序列分析、线性相关性分析和传统的FFD算法,并基于虚拟机的最小资源利用率建立了一套新的虚拟机动态资源整合理论。数值仿真结果表明,在虚拟机整合过程中,新的基于SICC的架构在使用不同的初始动态条件时,以虚拟机为粒度的物理资源利用率性能提升3%~20%;在以服务器为粒度的物理资源利用率性能提升超过5%。     

分层PCE架构下为解决多域路径计算的链路-节点拓扑聚合方式

Inter-domain path computing is one big issue in multi-domain networks . The Hierarchical Path Computing Element (H-PCE) is a semi-central architecture for computing inter-domain path. To facilitate H-PCE in inter-domain path computing, this paper proposed a topology aggregation scheme to abstract the edge nodes and their connected inter-domain link as one vertex to achieve more optimal paths and confidentiality guarantee. The effectiveness of the scheme has been demonstrated on solving wavelength routing in multi-domain Wavelength Division Multiplexing (WDM ) network via simulation. Simulation results show that this scheme reduces at least 10% inter-domain blocking probability, compared with the traditional Domain-to-the-Node (DtN) scheme.