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公开(公告)号：US07814072B2
公开(公告)日：2010-10-12
申请号：US11028186
申请日：2004-12-30
申请人： Patrick Dooling Bossman , You-Chin Fuh , Shuanglin Guo , Chan-hua Liu , Yoichi Tsuji , Changjiu Xian
发明人： Patrick Dooling Bossman , You-Chin Fuh , Shuanglin Guo , Chan-hua Liu , Yoichi Tsuji , Changjiu Xian
IPC分类号： G06F17/00
CPC分类号： G06F17/30315
摘要： A method of, a computer program product for and a computer system for managing statistics in a database management system are provided. A value of a volatility of a statistic is determined. A value of a staleness of the statistic is determined using the value of the volatility. A statistics collection task is generated in response to, at least in part, the value of the staleness exceeding a value of a staleness threshold. The statistics collection task is executed to collect an additional value of the statistic. The additional value of the statistic is stored.
摘要翻译： 提供了一种用于管理数据库管理系统中的统计的计算机程序产品和计算机系统的方法。 确定统计量的波动率的值。 使用波动率的值确定统计量的平均值。 响应于至少部分地响应于超过平常阈值的陈旧值的值来生成统计收集任务。 执行统计信息收集任务以收集统计信息的附加值。 存储统计信息的附加值。
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公开(公告)号：US20060149695A1
公开(公告)日：2006-07-06
申请号：US11028186
申请日：2004-12-30
申请人： Patrick Bossman , You-Chin Fuh , Shuanglin Guo , Chan-hua Liu , Yoichi Tsuji , Changjiu Xian
发明人： Patrick Bossman , You-Chin Fuh , Shuanglin Guo , Chan-hua Liu , Yoichi Tsuji , Changjiu Xian
IPC分类号： G06N5/02
CPC分类号： G06F17/30315
摘要： Various embodiments of a method, apparatus and article of manufacture of managing statistics in a database management system are provided. A volatility of at least one of statistic is determined. One or more statistics collection tasks are generated based on, at least in part, the volatility.
摘要翻译： 提供了一种在数据库管理系统中管理统计信息的方法，装置和制造的各种实施例。 确定统计中至少一个的波动性。 基于至少部分波动率生成一个或多个统计信息收集任务。
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公开(公告)号：US20120284543A1
公开(公告)日：2012-11-08
申请号：US13099077
申请日：2011-05-02
CPC分类号： G06F1/3203 , G06F1/3206
摘要： Techniques for user input triggered device power management are described that enable user inputs and activities to cause selective changes in power states for a device. Power can be boosted to a high power state to improve responsiveness for designated inputs and/or activities. When responsiveness is deemed less important in connection with particular inputs and/or activities, a low power state can be set to reduce energy consumption. In at least some embodiments, selectively switching between power states includes detecting various user inputs at a device and filtering the inputs to select power states associated with the user inputs. The device can then be operated in a selected power state until a transition to a different power state is triggered by occurrence of designated events, such as running of a set time interval, further user input, and/or completion of user activity.
摘要翻译： 描述用于用户输入触发的设备电源管理的技术，其使得用户输入和活动能够引起对设备的功率状态的选择性改变。 电力可以提升到高功率状态，以提高对指定投入和/或活动的响应能力。 当响应性被认为与特定输入和/或活动相关的重要性较低时，可以设置低功率状态以降低能量消耗。 在至少一些实施例中，选择性地在功率状态之间切换包括检测设备处的各种用户输入并且过滤输入以选择与用户输入相关联的功率状态。 然后可以以所选择的功率状态操作设备，直到通过发生指定事件（例如运行设定的时间间隔，进一步的用户输入和/或用户活动的完成）触发到不同功率状态的转换。
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公开(公告)号：US20130132616A1
公开(公告)日：2013-05-23
申请号：US13299189
申请日：2011-11-17
申请人： Bruce L. Worthington , Jason Carl Hendrickson , Robert P. Fitzgerald , Stuart Sechrest , Changjiu Xian , Qi Zhang
发明人： Bruce L. Worthington , Jason Carl Hendrickson , Robert P. Fitzgerald , Stuart Sechrest , Changjiu Xian , Qi Zhang
IPC分类号： G06F3/00
CPC分类号： G06F11/3428 , G06F11/3419 , G06F11/3485 , G06F2201/81
摘要： A method and an apparatus for characterizing performance of a device based on user-perceivable latency. To characterize device performance, a value of a metric may be computed from latencies of operations performed by the device. In computing a value of a metric, latencies may be treated differently, such that some latencies perceivable by a user of the device may have a greater impact on the value of the metric than other latencies that either are not perceivable or are perceived by the user to a lesser degree. Such a performance metric based on user-perceivable latency facilitates identification of computing device that provide a desirable user experience.
摘要翻译： 一种用于基于用户可感知延迟来表征设备的性能的方法和装置。 为了表征设备性能，可以根据设备执行的操作的延迟来计算度量值。 在计算度量的值时，可以不同地处理延迟，使得由设备的用户感知到的某些延迟可能对度量的值具有比不可感知的或被用户感知的其他潜伏期更大的影响 在较小程度上。 基于用户可感知延迟的这种性能度量促进了提供期望的用户体验的计算设备的识别。
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公开(公告)号：US20120284544A1
公开(公告)日：2012-11-08
申请号：US13102890
申请日：2011-05-06
CPC分类号： G06F1/3268 , G06F1/3275 , G06F1/3293 , G06F3/061 , G06F3/0656 , G06F3/0676 , G06F12/0804 , G06F12/0866 , G06F12/0868 , G06F2003/0692 , G06F2212/1028 , Y02D10/13 , Y02D10/14
摘要： Techniques for storage device power management are described that enable coordinated buffer flushing and power management for storage devices. In various embodiments, a power manager can coordinate the flushing of pending or “dirty” data from multiple buffers of a computing device in order to reduce or eliminate interleaved (e.g., uncoordinated) data operations from the multiple buffers that can cause shortened disk idle periods. By so doing, the power manager can selectively manage power states for one or more power-managed storage devices to produce longer idle periods. For example, information regarding the status of multiple buffers can be used in conjunction with analysis of historical I/O patterns to determine appropriate times to spin down a disk or allow the disk to keep spinning. Additionally, user-presence information can be utilized to tune the aggressiveness of buffer coordination and state transitions for power-managed storage devices to improve performance.
摘要翻译： 描述了用于存储设备电源管理的技术，其用于存储设备的协调缓冲器冲洗和电源管理。 在各种实施例中，功率管理器可以协调来自计算设备的多个缓冲器的等待或脏数据的刷新，以便减少或消除可能导致缩短的盘空闲周期的多个缓冲器的交错（例如，未协调的）数据操作。 通过这样做，功率管理器可以选择性地管理一个或多个功率管理存储设备的功率状态以产生更长的空闲周期。 例如，有关多个缓冲区的状态的信息可以与历史I / O模式的分析一起使用，以确定适当的时间旋转磁盘或允许磁盘保持旋转。 此外，可以利用用户存在信息来调整功率管理存储设备的缓冲器协调和状态转换的积极性，以提高性能。
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公开(公告)号：US20070245163A1
公开(公告)日：2007-10-18
申请号：US11713889
申请日：2007-03-05
IPC分类号： G06F1/00
CPC分类号： G06F1/3203
摘要： An apparatus and method are provided for power management in a computer operating system. The method includes providing a plurality of policies which are eligible to be selected for a component, automatically selecting one of the eligible policies to manage the component, and activating the selected policy to manage the component while the system is running without rebooting the system.
摘要翻译： 提供了一种用于计算机操作系统中的电力管理的装置和方法。 该方法包括提供有资格为组件选择的多个策略，自动选择合格策略中的一个来管理组件，以及激活所选择的策略以在系统运行时管理组件而不重新启动系统。
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公开(公告)号：US09223675B2
公开(公告)日：2015-12-29
申请号：US13299189
申请日：2011-11-17
申请人： Bruce L. Worthington , Jason Carl Hendrickson , Robert P. Fitzgerald , Stuart Sechrest , Changjiu Xian , Qi Zhang
发明人： Bruce L. Worthington , Jason Carl Hendrickson , Robert P. Fitzgerald , Stuart Sechrest , Changjiu Xian , Qi Zhang
CPC分类号： G06F11/3428 , G06F11/3419 , G06F11/3485 , G06F2201/81
摘要： A method and an apparatus for characterizing performance of a device based on user-perceivable latency. To characterize device performance, a value of a metric may be computed from latencies of operations performed by the device. In computing a value of a metric, latencies may be treated differently, such that some latencies perceivable by a user of the device may have a greater impact on the value of the metric than other latencies that either are not perceivable or are perceived by the user to a lesser degree. Such a performance metric based on user-perceivable latency facilitates identification of computing device that provide a desirable user experience.
摘要翻译： 一种用于基于用户可感知延迟来表征设备的性能的方法和装置。 为了表征设备性能，可以根据设备执行的操作的延迟来计算度量值。 在计算度量的值时，可以不同地处理延迟，使得由设备的用户感知到的某些延迟可能对度量的值具有比不可感知的或被用户感知的其他潜伏期更大的影响 在较小程度上。 基于用户可感知延迟的这种性能度量促进了提供期望的用户体验的计算设备的识别。
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