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    • 93. 发明申请
    • REAL TIME ANALYTICS USING HYBRID HISTOGRAMS
    • 使用混合组织学的实时分析
    • US20080140347A1
    • 2008-06-12
    • US11609457
    • 2006-12-12
    • Mark S. RamseyDavid A. SelbyStephen J. Todd
    • Mark S. RamseyDavid A. SelbyStephen J. Todd
    • G06F17/18
    • G06F17/18G06Q10/00
    • A system, method and program product for processing a stream of data events using hybrid histograms. A system is provided that includes: a hybrid histogram that provides a running statistical summary of the stream of data events, wherein the hybrid histogram includes a plurality of percentile ranges, a set of boundary values that separate the percentile ranges, and a count associated with each of the percentile ranges; a histogram processing system for identifying a percentile range from the plurality of percentile ranges into which a new data event value falls, and for incrementing the count associated with the identified percentile range; a periodic boundary recalculation system for periodically recalculating the boundary values such that each percentile range includes a substantially similar number of associated counts; and an analysis system that analyzes the hybrid histogram.
    • 一种使用混合直方图处理数据事件流的系统,方法和程序产品。 提供了一种系统,其包括:混合直方图,其提供数据事件流的运行统计摘要,其中所述混合直方图包括多个百分位数范围,分离百分位数范围的一组边界值,以及与 每个百分位数范围; 直方图处理系统,用于从新的数据事件值落入的多个百分点范围中识别百分位数范围,并用于递增与所识别的百分位数范围相关联的计数; 周期性边界重新计算系统,用于周期性地重新计算边界值,使得每个百分位数范围包括基本上相似数量的关联计数; 以及分析混合直方图的分析系统。
    • 95. 发明授权
    • High availability disk arrays
    • 高可用性磁盘阵列
    • US5305326A
    • 1994-04-19
    • US847639
    • 1992-03-06
    • Robert C. SolomonStephen J. Todd
    • Robert C. SolomonStephen J. Todd
    • G06F3/06G06F11/10G06F11/14G11C29/00H03M13/00
    • G11C29/88G06F11/1084G06F11/1415G06F2211/104
    • A method for handling data in a plurality of data storage disks having user data sectors and corresponding parity sectors, the method being used when the disks are being operated in a degraded mode wherein data in sectors of an inoperative user data disk are reconstructed from data in the corresponding sectors of the other user data disks and the corresponding parity entry. The reconstructed user data in a user data sector of the inoperative disk is written into the corresponding parity sector in place of the parity entry therein, before any new data is written into the corresponding sector of an operative disk. Information identifying the inoperative disk is written into a specified identification region of the parity disk to indicate that such operation has occurred. The new data is then written into the corresponding sector of the operative disk.
    • 一种用于处理具有用户数据扇区和对应的奇偶校验扇区的多个数据存储盘中的数据的方法,所述方法是在磁盘以劣化模式操作时使用的,其中在不可操作用户数据盘的扇区中的数据从 其他用户数据磁盘的相应扇区和相应的奇偶校验项。 在将任何新数据写入到操作盘的相应扇区之前,将不操作盘的用户数据扇区中的重建的用户数据写入对应的奇偶校验扇区以代替其中的奇偶校验入口。 将识别不工作盘的信息写入奇偶校验盘的指定识别区域,以指示已经发生这种操作。 然后将新数据写入到操作盘的相应扇区中。
    • 96. 发明授权
    • Solid modelling system with logic to discard redundant primitives
    • 具有逻辑冗余原则的实体建模系统
    • US5086495A
    • 1992-02-04
    • US285850
    • 1988-12-16
    • Michael A. GrayAlan R. HalbertStephen J. Todd
    • Michael A. GrayAlan R. HalbertStephen J. Todd
    • G06F17/50G06T17/20
    • G06T17/20
    • A solid modelling system for generating a spatial representation of an object defined by a structure having a plurality of linked nodes representing the object in terms of solid geometric primitives combined by a logical expression, which is adapted to recognize redundant primitives automatically. Bitmap generation logic (BGL) is provided for traversing at least certain of the nodes in the structure for generating a bitmap representing the part of the logical expression defined in the traversed nodes and redundant primitive logic (RPL) is provided for testing the bitmap for logical redundancies indicative of redundant geometric primitives. Each bit in the bitmap is representative of a respective one of the constituents of the primitives, a constituent being the volume formed by the intersection of primitives or their complements, and, in order to test for the redundancy of a primitive u, the RPL tests for equivalence of the corresponding utrue and ufalse constituents in the bitmap. The BGL additinally generates a table of pointers to the primitives encountered during the traversal and the RPL deletes from the table a pointer to a primitive which is found to be redundant. Node generation logic (NGL) is provided for replacing the nodes traversed by the first logic by a single truth table node which comprises the modified bitmap produced by the RPL and pointers to nodes defining the remaining primitives. Logic may also be provided for processing a relevance map indicative of geometric information in combination with the bitmap.
    • 98. 发明授权
    • Methods, apparatus and computer programs for managing persistence
    • 用于管理持久性的方法,设备和计算机程序
    • US09495229B2
    • 2016-11-15
    • US12307255
    • 2007-06-26
    • Stephen J. Todd
    • Stephen J. Todd
    • G06F7/00G06F9/54G06F11/00G06Q10/06G06F11/14
    • G06F9/546G06F3/0619G06F3/0629G06F3/0683G06F11/008G06F11/1471G06Q10/0635
    • Described are methods, apparatus and computer programs for managing persistence within a data processing system such as a messaging system, database system or file system. The method for managing persistence includes a deferred evaluation (230,330,430) of at least one criterion associated with costs and/or benefits of saving to persistent storage, instead of persistence behavior being fully predefined. The evaluation may be performed when a disk write is about to be performed (240,340,440), or at various times during processing of a data update and at various points within a data processing network. In a messaging solution, the method for managing persistence includes a dynamic evaluation (230,330,430) of costs and/or benefits of saving to persistent storage, with the evaluation being performed at various points in the messaging network after the message has been created and sent by the originating entity. The method includes determining whether message data and/or log records relating to the message require saving to persistent storage, in accordance with the costs and/or the benefits of saving to persistent storage. The benefits of persisting may be determined with reference to a message value (400).
    • 描述了用于管理诸如消息系统,数据库系统或文件系统之类的数据处理系统内的持久性的方法,装置和计算机程序。 用于管理持久性的方法包括与保存到持久存储器的成本和/或益处相关联的至少一个准则的延迟评估(230,330,430),而不是完全预定义的持久性行为。 当即将要执行磁盘写入(240,340,440)时,或者在处理数据更新期间的不同时间以及在数据处理网络内的各个点处,可以执行评估。 在消息传递解决方案中,用于管理持久性的方法包括对持久存储的存储的成本和/或益处的动态评估(230,330,430),其中在消息已被创建并且由 始发实体。 该方法包括根据保存到持久存储器的成本和/或益处来确定与消息有关的消息数据和/或日志记录是否需要保存到持久存储器。 持久化的好处可以参考消息值来确定(400)。
    • 100. 发明授权
    • Techniques for providing an application service to an application from an appliance-style application services platform
    • 从设备式应用服务平台向应用提供应用服务的技术
    • US08819203B1
    • 2014-08-26
    • US11864026
    • 2007-09-28
    • Stephen J. ToddAndreas L. BauerGerald E. Cotter
    • Stephen J. ToddAndreas L. BauerGerald E. Cotter
    • G06F15/173
    • G06F9/4856G06F3/0647G06F2209/482
    • An application services platform includes a platform chassis, a network interface supported by the platform chassis, and a control circuit supported by the platform chassis and coupled to the network interface. The control circuit is arranged to connect to a network through the network interface, and receive an application service command from a user. The application service command gives the control circuit permission to provide an application service to an application running on a server on the network. The control circuit is further arranged to provide the application service to the application running on the server on the network in response to receipt of the application service command. The application services platform is capable of being provided in the form of an appliance-style device which is simply added as a new device on the network.
    • 应用服务平台包括平台机箱,由平台机箱支持的网络接口,以及由平台机箱支持并耦合到网络接口的控制电路。 控制电路被布置成通过网络接口连接到网络,并且从用户接收应用服务命令。 应用程序服务命令允许控制电路向在网络上的服务器上运行的应用程序提供应用程序服务。 所述控制电路还被配置为响应于所述应用服务命令的接收,向在所述网络上的所述服务器上运行的应用提供所述应用服务。 应用服务平台能够以简单地作为新设备添加到网络上的设备式设备的形式提供。