多控制器软件定义网络中交换机迁移策略计算空间大、考虑因素单一且无法立刻迁移出故障域内交换机.对此,本文将原交换机迁移问题优化成为控制器的热备份及选举问题(Controller Hot Backup and Election Problem,CHBE Problem),对控制器...多控制器软件定义网络中交换机迁移策略计算空间大、考虑因素单一且无法立刻迁移出故障域内交换机.对此,本文将原交换机迁移问题优化成为控制器的热备份及选举问题(Controller Hot Backup and Election Problem,CHBE Problem),对控制器进行热备份,并设计相应的备份空间确定算法和主控制器选举算法,通过权衡信息交互、失联性、负载失衡和跨域通信四种代价实现合理的网络构建.实验结果表明,与现有算法相比,负载均衡程度和跨域通信问题改善明显,备份空间平均缩小了65%;在OS3E拓扑中加权后的综合评价最高提升了71%.展开更多
The reliability and high performance of metadata service is crucial to the store architecture. A novel design of a two-level metadata server file system （TTMFS） is presented, which behaves high reliability and perfo...The reliability and high performance of metadata service is crucial to the store architecture. A novel design of a two-level metadata server file system （TTMFS） is presented, which behaves high reliability and performance. The merits both centralized management and distributed management are considered simultaneously in our design. In this file system, the advanced-metadata server is responsible for manage directory metadata and the whole namespace. The double-metadata server is responsible for maintaining file metadata. And this paper uses the Markov return model to analyze the reliability of the two-level metadata server. The experiment data indicates that the design can provide high throughput.展开更多
为提高集群系统的可靠性和计算性能并降低成本,提出将单一系统映像的集群系统(Single System Image)和分布式复制块设备技术(DRBD)结合起来构建一种高可用集群(SSI-DRBD集群)。这种利用单一系统映像和DRBD技术所构建的集群具有高性能、...为提高集群系统的可靠性和计算性能并降低成本,提出将单一系统映像的集群系统(Single System Image)和分布式复制块设备技术(DRBD)结合起来构建一种高可用集群(SSI-DRBD集群)。这种利用单一系统映像和DRBD技术所构建的集群具有高性能、高可靠、实时性强、易管理和低成本等特点,可作为周期性、高强度和多元信息处理的平台。展开更多
文摘多控制器软件定义网络中交换机迁移策略计算空间大、考虑因素单一且无法立刻迁移出故障域内交换机.对此,本文将原交换机迁移问题优化成为控制器的热备份及选举问题(Controller Hot Backup and Election Problem,CHBE Problem),对控制器进行热备份,并设计相应的备份空间确定算法和主控制器选举算法,通过权衡信息交互、失联性、负载失衡和跨域通信四种代价实现合理的网络构建.实验结果表明,与现有算法相比,负载均衡程度和跨域通信问题改善明显,备份空间平均缩小了65%;在OS3E拓扑中加权后的综合评价最高提升了71%.
基金Supported by the Industrialized Foundation ofHebei Province (F020501)
文摘The reliability and high performance of metadata service is crucial to the store architecture. A novel design of a two-level metadata server file system （TTMFS） is presented, which behaves high reliability and performance. The merits both centralized management and distributed management are considered simultaneously in our design. In this file system, the advanced-metadata server is responsible for manage directory metadata and the whole namespace. The double-metadata server is responsible for maintaining file metadata. And this paper uses the Markov return model to analyze the reliability of the two-level metadata server. The experiment data indicates that the design can provide high throughput.
文摘为提高集群系统的可靠性和计算性能并降低成本,提出将单一系统映像的集群系统(Single System Image)和分布式复制块设备技术(DRBD)结合起来构建一种高可用集群(SSI-DRBD集群)。这种利用单一系统映像和DRBD技术所构建的集群具有高性能、高可靠、实时性强、易管理和低成本等特点,可作为周期性、高强度和多元信息处理的平台。
