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    • 61. 发明授权
    • Hybrid object placement in a distributed storage system
    • 混合对象放置在分布式存储系统中
    • US07536426B2
    • 2009-05-19
    • US11193797
    • 2005-07-29
    • Wei ChenChao JinDan TeodosiuQiao LianShiding LinYu ChenZheng Zhang
    • Wei ChenChao JinDan TeodosiuQiao LianShiding LinYu ChenZheng Zhang
    • G06F12/00G06F17/30G06F17/00
    • G06F11/1662Y10S707/99952Y10S707/99953Y10S707/99955
    • Described is the differentiation of replicas in a large distributed object store as either being smoothing replicas based on an amount of load on storage nodes (bricks), or as spreading replicas based on a substantially random distribution among the system's bricks. The smoothing replicas are placed among the lowest usage bricks, while the spreading replicas are placed randomly throughout other bricks in the system independent of load. As a result, fast, primarily parallel data repair is facilitated by selecting a spreading replica when repair is needed, while load balancing is facilitated by placing a smoothing replica on a low-usage brick when a new replica is checked in, and selecting a smoothing replica when load balancing is triggered by overloading of a brick and/or addition of a new brick. Check-in, data repair and load balancing policies specify how to use smoothing replicas and spreading replicas.
    • 描述了大型分布式对象存储区中的副本的区别,无论是基于存储节点(砖块)上的负载量来平滑副本,还是基于系统砖块之间的基本随机分布的扩展副本。 平滑复制品被放置在最低使用砖之间,而扩展复制品随机地放置在系统中与负载无关的其他砖块中。 因此,通过在需要修复时选择扩展副本来促进快速,主要并行的数据修复,同时通过在检查新的副本时将平滑副本放置在低使用率的砖上来帮助实现负载平衡,并且选择平滑 当负载平衡由砖的重载和/或添加新砖触发时的副本。 登录,数据修复和负载均衡策略规定了如何使用平滑副本和扩展副本。
    • 63. 发明申请
    • Distributed system simulation: slow message relaxation
    • 分布式系统模拟:缓慢消息放松
    • US20070129928A1
    • 2007-06-07
    • US11269133
    • 2005-11-08
    • Shiding LinAimin PanRui GuoZheng Zhang
    • Shiding LinAimin PanRui GuoZheng Zhang
    • G06G7/62G06F17/50
    • G06F17/5009
    • Distributed system simulation is enhanced by extending the simulation window. In a described implementation, the simulation window extension is facilitated with a slow message relaxation scheme. For example, especially when the simulation window is extended, slow unscheduled events can arrive at a logical process with a timestamp that is prior to (e.g., less than) the local time of a receiving logical process that is participating in a simulation. To ameliorate issues created by a slow unscheduled message and its corresponding slow unscheduled event, a current logical time of the receiving logical process is substituted for the original timestamp of the slow unscheduled event to transform it into a punctual unscheduled event.
    • 通过扩展仿真窗口来增强分布式系统仿真。 在所描述的实现中,通过慢消息松弛方案来促进模拟窗口扩展。 例如,特别是当模拟窗口被扩展时,缓慢的非预定事件可以到达逻辑进程,该时间戳在参与模拟的接收逻辑进程的(例如,小于)本地时间之前。 为了改善缓慢的非计划消息及其相应的缓慢的非调度事件所产生的问题,接收逻辑进程的当前逻辑时间代替慢速非预定事件的原始时间戳,将其转换成准时的非调度事件。
    • 64. 发明申请
    • Cluster storage collection based data management
    • 基于群集存储集合的数据管理
    • US20060271547A1
    • 2006-11-30
    • US11137754
    • 2005-05-25
    • Wei ChenQiao LianZheng Zhang
    • Wei ChenQiao LianZheng Zhang
    • G06F17/30
    • G06F17/30215G06F11/1662
    • Cluster storage collection-based data management is described. In one aspect, and in a distributed system for storing data across a network to multiple data storage nodes, a bounded bandwidth available for data repair in the distributed system is determined. A specific number of stripes are then created on each data storage node of the multiple data storage nodes. The stripes are for placement and replication of data objects across respective ones of the data storage nodes. The specific number of stripes created on each data storage node is a function of the determined bounded data repair bandwidth.
    • 描述了基于群集存储收集的数据管理。 在一个方面,并且在用于将网络上的数据存储到多个数据存储节点的分布式系统中,确定了可用于分布式系统中的数据修复的有界带宽。 然后在多个数据存储节点的每个数据存储节点上创建特定数量的条带。 这些条纹用于跨数据存储节点的相应数据对象放置和复制数据对象。 在每个数据存储节点上创建的条带的具体数量是确定的有界数据修复带宽的函数。