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1.发明授权Dynamic DASD data management and partitioning based on access frequency utilization and capacity 失效基于访问频率利用率和容量的动态DASD数据管理和分区公开(公告)号：US06324620B1
公开(公告)日：2001-11-27
申请号：US09121449
申请日：1998-07-23
申请人： Patrick James Christenson , Michael Joseph Corrigan , Thomas Richard Crowley , Michael Steven Faunce , Michael James McDermott , Timothy John Mullins , Glen Warren Nelson , Russell Paul VanDuine , Bruce Marshall Walk
发明人： Patrick James Christenson , Michael Joseph Corrigan , Thomas Richard Crowley , Michael Steven Faunce , Michael James McDermott , Timothy John Mullins , Glen Warren Nelson , Russell Paul VanDuine , Bruce Marshall Walk
IPC分类号： G06F1200
CPC分类号： G06F3/061 , G06F3/0644 , G06F3/0653 , G06F3/0674
摘要： Method and apparatus for managing data on DASD units to improve system performance comprises monitoring portions of data on a plurality of DASD units to determine the times the data is accessed within a given time period, and characterizing accessed data portions of a DASD unit as HOT and COLD data. The DASD units are monitored to determine the number of times each unit is accessed within a time period to develop utilization factors reflective of the number of times the DASD unit is accessed during the time period. HOT and COLD data is moved between DASD units based on the utilization factors of the DASD units.
摘要翻译： 用于管理DASD单元上的数据以提高系统性能的方法和装置包括监视多个DASD单元上的数据部分以确定在给定时间段内数据被访问的次数，以及将DASD单元的访问数据部分表征为HOT，以及 COLD数据。 监视DASD单元以确定每个单元在一段时间内访问的次数，以开发反映在该时间段期间访问DASD单元的次数的利用因子。 基于DASD单元的利用率，HOT和COLD数据在DASD单元之间移动。
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公开(公告)号：US20080201565A1
公开(公告)日：2008-08-21
申请号：US12109011
申请日：2008-04-24
IPC分类号： G06F9/30
CPC分类号： G06F9/463 , G06F12/0862 , G06F2212/6028
摘要： An apparatus, program product and method initiate, in connection with a context switch operation, a prefetch of data likely to be used by a thread prior to resuming execution of that thread. As a result, once it is known that a context switch will be performed to a particular thread, data may be prefetched on behalf of that thread so that when execution of the thread is resumed, more of the working state for the thread is likely to be cached, or at least in the process of being retrieved into cache memory, thus reducing cache-related performance penalties associated with context switching.
摘要翻译： 一种装置，程序产品和方法结合上下文切换操作，在恢复该线程的执行之前启动可能由线程使用的数据的预取。 因此，一旦知道将对特定线程执行上下文切换，则可以代表该线程预取数据，使得当线程的执行被恢复时，线程的更多的工作状态可能 被缓存，或至少在被检索到高速缓冲存储器的过程中，从而减少与上下文切换相关联的与缓存相关的性能惩罚。
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公开(公告)号：US20080201529A1
公开(公告)日：2008-08-21
申请号：US12108998
申请日：2008-04-24
CPC分类号： G06F9/463 , G06F12/0862 , G06F2212/6028
摘要： An apparatus, program product and method initiate, in connection with a context switch operation, a prefetch of data likely to be used by a thread prior to resuming execution of that thread. As a result, once it is known that a context switch will be performed to a particular thread, data may be prefetched on behalf of that thread so that when execution of the thread is resumed, more of the working state for the thread is likely to be cached, or at least in the process of being retrieved into cache memory, thus reducing cache-related performance penalties associated with context switching.
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公开(公告)号：US09047116B2
公开(公告)日：2015-06-02
申请号：US12108998
申请日：2008-04-24
CPC分类号： G06F9/463 , G06F12/0862 , G06F2212/6028
摘要： An apparatus, program product and method initiate, in connection with a context switch operation, a prefetch of data likely to be used by a thread prior to resuming execution of that thread. As a result, once it is known that a context switch will be performed to a particular thread, data may be prefetched on behalf of that thread so that when execution of the thread is resumed, more of the working state for the thread is likely to be cached, or at least in the process of being retrieved into cache memory, thus reducing cache-related performance penalties associated with context switching.
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公开(公告)号：US07493621B2
公开(公告)日：2009-02-17
申请号：US10739738
申请日：2003-12-18
CPC分类号： G06F9/463 , G06F12/0862 , G06F2212/6028
摘要： An apparatus, program product and method initiate, in connection with a context switch operation, a prefetch of data likely to be used by a thread prior to resuming execution of that thread. As a result, once it is known that a context switch will be performed to a particular thread, data may be prefetched on behalf of that thread so that when execution of the thread is resumed, more of the working state for the thread is likely to be cached, or at least in the process of being retrieved into cache memory, thus reducing cache-related performance penalties associated with context switching.
摘要翻译： 一种装置，程序产品和方法结合上下文切换操作，在恢复该线程的执行之前启动可能由线程使用的数据的预取。 因此，一旦知道将对特定线程执行上下文切换，则可以代表该线程预取数据，使得当线程的执行被恢复时，线程的更多的工作状态可能 被缓存，或至少在被检索到高速缓冲存储器的过程中，从而减少与上下文切换相关联的与缓存相关的性能惩罚。
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公开(公告)号：US08141098B2
公开(公告)日：2012-03-20
申请号：US12354859
申请日：2009-01-16
CPC分类号： G06F9/463 , G06F12/0862 , G06F2212/6028
摘要： An apparatus initiates, in connection with a context switch operation, a prefetch of data likely to be used by a thread prior to resuming execution of that thread. As a result, once it is known that a context switch will be performed to a particular thread, data may be prefetched on behalf of that thread so that when execution of the thread is resumed, more of the working state for the thread is likely to be cached, or at least in the process of being retrieved into cache memory, thus reducing cache-related performance penalties associated with context switching.
摘要翻译： 与上下文切换操作相关联的装置在恢复该线程的执行之前启动可能被线程使用的数据的预取。 因此，一旦知道将对特定线程执行上下文切换，则可以代表该线程预取数据，使得当线程的执行被恢复时，线程的更多的工作状态可能 被缓存，或至少在被检索到高速缓冲存储器的过程中，从而减少与上下文切换相关联的与缓存相关的性能惩罚。
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公开(公告)号：US20090125913A1
公开(公告)日：2009-05-14
申请号：US12354859
申请日：2009-01-16
CPC分类号： G06F9/463 , G06F12/0862 , G06F2212/6028
摘要： An apparatus initiates, in connection with a context switch operation, a prefetch of data likely to be used by a thread prior to resuming execution of that thread. As a result, once it is known that a context switch will be performed to a particular thread, data may be prefetched on behalf of that thread so that when execution of the thread is resumed, more of the working state for the thread is likely to be cached, or at least in the process of being retrieved into cache memory, thus reducing cache-related performance penalties associated with context switching.
摘要翻译： 与上下文切换操作相关联的装置在恢复该线程的执行之前启动可能被线程使用的数据的预取。 因此，一旦知道将对特定线程执行上下文切换，则可以代表该线程预取数据，使得当线程的执行被恢复时，线程的更多的工作状态可能 被缓存，或至少在被检索到高速缓冲存储器的过程中，从而减少与上下文切换相关联的与缓存相关的性能惩罚。
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8.发明授权Method and apparatus for implementing two-tiered thread state multithreading support with high clock rate 失效用于以高时钟速率实现双层线程状态多线程支持的方法和装置公开(公告)号：US06965986B2
公开(公告)日：2005-11-15
申请号：US10246937
申请日：2002-09-19
CPC分类号： G06F9/4881 , G06F9/3851 , G06F2209/483
摘要： A method and apparatus are provided for implementing two-tiered thread state multithreading support with a high clock rate. A first tier thread state storage stores a limited number of runnable thread register states. The limited number is less than a threshold value. Next thread selection logic coupled between the first tier thread state storage and a currently executing processor state, picks a next thread to run on a processor from the limited number of runnable thread register states. A second tier thread storage facility stores a second number of thread states that is greater than the limited number of runnable thread register states. A runnable thread selection logic coupled between the first tier thread state storage and the second tier thread storage facility, selectively exchanges thread states between the first tier limited number of runnable thread register states and the second tier thread storage facility.
摘要翻译： 提供了一种以高时钟速率实现双层线程状态多线程支持的方法和装置。 第一层线程状态存储器存储有限数量的可运行线程寄存器状态。 有限数量小于阈值。 下一个线程选择逻辑耦合在第一层线程状态存储器和当前执行的处理器状态之间，从有限数量的可运行线程寄存器状态中选择在处理器上运行的下一个线程。 第二层线程存储设备存储大于有限数量的可运行线程寄存器状态的第二数量的线程状态。 耦合在第一层线程状态存储器和第二层级线程存储设备之间的可运行的线程选择逻辑选择性地在第一层有限数量的可运行线程寄存器状态和第二层级线程存储设施之间交换线程状态。
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公开(公告)号：US08140833B2
公开(公告)日：2012-03-20
申请号：US11246820
申请日：2005-10-07
申请人： Jeffrey Powers Bradford , Richard James Eickemeyer , Timothy Hume Heil , Harold F. Kossman , Timothy John Mullins
发明人： Jeffrey Powers Bradford , Richard James Eickemeyer , Timothy Hume Heil , Harold F. Kossman , Timothy John Mullins
CPC分类号： G06F9/30181 , G06F9/30189 , G06F9/3806 , G06F9/3844
摘要： A method, apparatus and computer program product are provided for implementing polymorphic branch history table (BHT) reconfiguration. A BHT includes a plurality of predetermined configurations corresponding predetermined operational modes. A first BHT configuration is provided. Checking is provided to identify improved performance with another BHT configuration. The BHT is reconfigured to provide improved performance based upon the current workload.
摘要翻译： 提供了一种用于实现多态分支历史表（BHT）重配置的方法，装置和计算机程序产品。 BHT包括对应于预定操作模式的多个预定配置。 提供了第一个BHT配置。 提供检查以通过另一个BHT配置来识别改进的性能。 BHT被重新配置，以根据当前工作负载提供改进的性能。
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公开(公告)号：US07617499B2
公开(公告)日：2009-11-10
申请号：US10739739
申请日：2003-12-18
IPC分类号： G06F9/46
CPC分类号： G06F9/3802 , G06F9/3851 , G06F12/0842 , G06F12/0862
摘要： An apparatus, program product and method initiate, in connection with a context switch operation, a prefetch of at least one instruction likely to be executed by a thread prior to resuming execution of that thread. As a result, once it is known that a context switch will be performed to a particular thread, one or more instructions may be prefetched on behalf of that thread so that when execution of the thread is resumed, those instructions are more likely to be cached, or at least in the process of being retrieved into cache memory, thus enabling a thread to begin executing instructions more quickly than if the thread was required to fetch those instructions upon resumption of its execution.
摘要翻译： 一种装置，程序产品和方法结合上下文切换操作，在恢复该线程的执行之前启动可能被线程执行的至少一个指令的预取。 因此，一旦知道将对特定线程执行上下文切换，则可以代表该线程预取一个或多个指令，使得当线程的执行被恢复时，这些指令更有可能被缓存 或者至少在被检索到高速缓冲存储器的过程中，因此使得线程比在恢复其执行时要求线程获取那些指令时更快地开始执行指令。
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