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31. 发明授权

US07487503B2 Scheduling threads in a multiprocessor computer 失效
标题翻译：在多处理器计算机中调度线程
公开(公告)号：US07487503B2
公开(公告)日：2009-02-03
申请号：US10916976
申请日：2004-08-12
申请人： Jos Manuel Accapadi , Mathew Accapadi , Andrew Dunshea , Mark Elliott Hack , Agustin Mena, III , Mysore Sathyanarayana Srinivas
发明人： Jos Manuel Accapadi , Mathew Accapadi , Andrew Dunshea , Mark Elliott Hack , Agustin Mena, III , Mysore Sathyanarayana Srinivas
IPC分类号： G06F9/46 , G06F13/24
CPC分类号： G06F9/5027 , G06F9/4812
摘要： Methods, systems, and computer program products are provided for scheduling threads in a multiprocessor computer. Embodiments include selecting a thread in a ready queue to be dispatched to a processor and determining whether an interrupt mask flag is set in a thread control block associated with the thread. If the interrupt mask flag is set in the thread control block associated with the thread, embodiments typically include selecting a processor, setting a current processor priority register of the selected processor to least favored, and dispatching the thread from the ready queue to the selected processor. In some embodiments, setting the current processor priority register of the selected processor to least favored is carried out by storing a value associated with the highest interrupt priority in the current processor priority register.
摘要翻译：提供方法，系统和计算机程序产品用于在多处理器计算机中调度线程。实施例包括选择要发送到处理器的准备队列中的线程，并且确定是否在与线程相关联的线程控制块中设置了中断屏蔽标志。如果在与线程相关联的线程控制块中设置中断屏蔽标志，则实施例通常包括选择处理器，将所选择的处理器的当前处理器优先级寄存器设置为最不利，并将线程从就绪队列调度到所选择的处理器。在一些实施例中，将所选择的处理器的当前处理器优先级寄存器设置为最不利的是通过在当前处理器优先级寄存器中存储与最高中断优先级相关联的值来执行。

32. 发明授权

US07464237B2 System and method for implementing a fast file synchronization in a data processing system 失效
标题翻译：用于在数据处理系统中实现快速文件同步的系统和方法
公开(公告)号：US07464237B2
公开(公告)日：2008-12-09
申请号：US11259898
申请日：2005-10-27
申请人： Jos M. Accapadi , Mathew Accapadi , Andrew Dunshea , Dirk Michel
发明人： Jos M. Accapadi , Mathew Accapadi , Andrew Dunshea , Dirk Michel
IPC分类号： G06F12/00
CPC分类号： G06F12/0804 , G06F3/0601 , G06F12/0866 , G06F2003/0692 , G06F2212/311
摘要： A system and method for implementing a fast file synchronization in a data processing system. A memory management unit divides a file stored in system memory into a collection of data block groups. In response to a master (e.g., processing unit, peripheral, etc.) modifying a first data block group among the collection of data block groups, the memory management unit writes a first block group number associated with the first data block group to system memory. In response to a master modifying a second data block group, the memory management unit writes the first data block group to a hard disk drive and writes a second data block group number associated with the second data block group to system memory. In response to a request to update modified data block groups of the file stored in the system memory to the hard disk drive, the memory management unit writes the second data block to the hard disk drive.
摘要翻译：一种用于在数据处理系统中实现快速文件同步的系统和方法。存储器管理单元将存储在系统存储器中的文件划分成数据块组的集合。响应于在数据块组的集合中修改第一数据块组的主（例如，处理单元，外围设备等），存储器管理单元将与第一数据块组相关联的第一块组号写入系统存储器。响应于主修改第二数据块组，存储器管理单元将第一数据块组写入硬盘驱动器，并将与第二数据块组相关联的第二数据块组编号写入系统存储器。响应于将存储在系统存储器中的文件的修改的数据块组更新到硬盘驱动器的请求，存储器管理单元将第二数据块写入硬盘驱动器。

33. 发明授权

US07337276B2 Method and apparatus for aging data in a cache 有权
标题翻译：用于在缓存中老化数据的方法和装置
公开(公告)号：US07337276B2
公开(公告)日：2008-02-26
申请号：US11201642
申请日：2005-08-11
申请人： Jos Accapadi , Andrew Dunshea , Greg R. Mewhinney , Mysore Sathyanaranyana Srinivas
发明人： Jos Accapadi , Andrew Dunshea , Greg R. Mewhinney , Mysore Sathyanaranyana Srinivas
IPC分类号： G06F12/00
CPC分类号： G06F12/0897 , G06F12/0891
摘要： A computer implemented method, apparatus, and computer usable code for managing cache data. A partition identifier is associated with a cache entry in a cache, wherein the partition identifier identifies a last partition accessing the cache entry. The partition identifier associated with the cache entry is compared with a previous partition identifier located in a processor register in response to the cache entry being moved into a lower level cache relative to the cache. The cache entry is marked if the partition identifier associated with the cache entry matches the previous partition identifier located in the processor register to form a marked cache entry, wherein the marked cache entry is aged at a slower rate relative to an unmarked cache entry.
摘要翻译：计算机实现的方法，装置和用于管理高速缓存数据的计算机可用代码。分区标识符与高速缓存中的高速缓存条目相关联，其中分区标识符标识访问高速缓存条目的最后一个分区。与高速缓存条目相关联的分区标识符与位于处理器寄存器中的先前分区标识符进行比较，以响应于高速缓存条目相对于高速缓存移动到较低级高速缓存。如果与高速缓存条目相关联的分区标识与位于处理器寄存器中的先前分区标识符相匹配以形成标记的高速缓存条目，则标记高速缓存条目，其中标记的高速缓存条目相对于未标记的高速缓存条目以较慢的速率进行老化。

34. 发明申请

US20060230247A1 Page allocation management for virtual memory 有权
标题翻译：虚拟内存的页面分配管理
公开(公告)号：US20060230247A1
公开(公告)日：2006-10-12
申请号：US11104044
申请日：2005-04-12
申请人： Andrew Declercq , Andrew Dunshea , Matthew Harding , Zachary Loafman
发明人： Andrew Declercq , Andrew Dunshea , Matthew Harding , Zachary Loafman
IPC分类号： G06F12/00
CPC分类号： G06F12/1009 , G06F12/1081
摘要： A method, system, device, and article of manufacture for use in a computer memory system utilizing multiple page types, for handling a memory resource request. In a accordance with the method of the invention, a request is received for allocation of pages having a first page type. The first page type has a specified allocation limit. A determination is made in response to the page allocation request of whether the number of allocated pages of the first page type exceeds or is below the allocation limit. In response to determining that the number of allocated pages of said first page type is below the allocation limit, the virtual memory manager enables allocation of pages for the request to exceed the allocation limit.
摘要翻译：一种用于在利用多个页面类型的计算机存储器系统中用于处理存储器资源请求的方法，系统，设备和制品。根据本发明的方法，接收到用于分配具有第一页面类型的页面的请求。第一页类型具有指定的分配限制。响应于页面分配请求确定第一页面类型的分配页数是否超过分配限制。响应于确定所述第一页面类型的分配页面的数量低于分配限制，虚拟存储器管理器使得能够分配用于请求的页面超过分配限制。

35. 发明申请

US20060129780A1 Memory pacing 失效
公开(公告)号：US20060129780A1
公开(公告)日：2006-06-15
申请号：US11011243
申请日：2004-12-14
申请人： Andrew Dunshea , Jos Aecapadi , Catherine Nunez
发明人： Andrew Dunshea , Jos Aecapadi , Catherine Nunez
IPC分类号： G06F12/00
CPC分类号： G06F12/1009 , Y10S707/99953 , Y10S707/99957
摘要： A method, system, and program for managing memory page requests in a multi-processor data processing system determines a threshold value of available memory, and dynamically adjusts an allocation time to fulfill a page request if the available memory is below a threshold value. The allocation time to fulfill the page request is based upon a percentage of available memory pages once a page stealer commences a scan for pages. An allocation wait time is inversely proportionally adjusted depending upon the percentage of available memory. The allocation wait time has a duration that increases in time as the percentage of available memory decreases and decreases in time as the percentage of available memory increases. More specifically, an average time per page to allocate a page including a scan time for the scan in computing the average time is determined. Then a tunable value is applied to the average time to determine a wait time. In a preferred embodiment, user defined values are received that would control the allocation wait time before fulfilling a page request.

36. 发明申请

US20050265235A1 Method, computer program product, and data processing system for improving transaction-oriented client-server application performance 审中-公开
标题翻译：方法，计算机程序产品和数据处理系统，用于提高面向事务的客户端 - 服务器应用程序性能
公开(公告)号：US20050265235A1
公开(公告)日：2005-12-01
申请号：US10855732
申请日：2004-05-27
申请人： Jos Accapadi , Kavitha Vittal Baratakke , Andrew Dunshea , Venkat Venkatsubra
发明人： Jos Accapadi , Kavitha Vittal Baratakke , Andrew Dunshea , Venkat Venkatsubra
IPC分类号： H04L1/18 , H04L12/26
CPC分类号： H04L1/1803
摘要： A method, computer program product, and a data processing system for processing transactions of a client-server application is provided. A first data set is transmitted from a client to a server. A second data set to be transmitted to the server is received by the client. An evaluation is made to determine whether transmission of the second data set is blocked until receipt of an acknowledgment of the first data set. A number of allowable outstanding acknowledgements is increased responsive to determining that the second data set is blocked from transmission.
摘要翻译：提供了一种用于处理客户机 - 服务器应用的事务的方法，计算机程序产品和数据处理系统。第一数据集从客户端发送到服务器。要发送到服务器的第二数据集被客户端接收。进行评估以确定在接收到第一数据集的确认之前是否阻止第二数据集的传输。响应于确定第二数据集被阻止传输而允许的许多未决确认被增加。

37. 发明申请

US20050086660A1 System and method for CPI scheduling on SMT processors 有权
标题翻译： SMT处理器CPI调度的系统和方法
公开(公告)号：US20050086660A1
公开(公告)日：2005-04-21
申请号：US10671132
申请日：2003-09-25
申请人： Jos Accapadi , Andrew Dunshea , Dirk Michel , Mysore Srinivas
发明人： Jos Accapadi , Andrew Dunshea , Dirk Michel , Mysore Srinivas
IPC分类号： G06F9/46
CPC分类号： G06F9/4881 , G06F2209/483
摘要： A system and method for identifying compatible threads in a Simultaneous Multithreading (SMT) processor environment is provided by calculating a performance metric, such as CPI, that occurs when two threads are running on the SMT processor. The CPI that is achieved when both threads were executing on the SMT processor is determined. If the CPI that was achieved is better than the compatibility threshold, then information indicating the compatibility is recorded. When a thread is about to complete, the scheduler looks at the run queue from which the completing thread belongs to dispatch another thread. The scheduler identifies a thread that is (1) compatible with the thread that is still running on the SMT processor (i.e., the thread that is not about to complete), and (2) ready to execute. The CPI data is continually updated so that threads that are compatible with one another are continually identified.
摘要翻译：通过计算在SMT处理器上运行两个线程时发生的性能度量（如CPI），可以提供用于识别同时多线程（SMT）处理器环境中的兼容线程的系统和方法。确定在两个线程在SMT处理器上执行时实现的CPI。如果实现的CPI优于兼容性阈值，则记录指示兼容性的信息。当线程即将完成时，调度程序将查看完成线程所属的运行队列，以调度另一个线程。调度程序标识（1）与SMT处理器上仍然运行的线程（即，即将完成的线程）兼容的线程，以及（2）准备执行。持续更新CPI数据，以便不断地识别彼此兼容的线程。

38. 发明申请

US20050081183A1 System and method for CPI load balancing in SMT processors 失效
标题翻译： SMT处理器中CPI负载平衡的系统和方法
公开(公告)号：US20050081183A1
公开(公告)日：2005-04-14
申请号：US10671057
申请日：2003-09-25
申请人： Jos Accapadi , Andrew Dunshea , Dirk Michel , Mysore Srinivas
发明人： Jos Accapadi , Andrew Dunshea , Dirk Michel , Mysore Srinivas
IPC分类号： G06F9/44 , G06F9/46
CPC分类号： G06F9/5083
摘要： A system and method for scheduling threads in a Simultaneous Multithreading (SMT) processor environment utilizing multiple SMT processors is provided. Poor performing threads that are being run on each of the SMT processors are identified. After being identified, the poor performing threads are moved to a different SMT processor. Data is captured regarding the performance of threads. In one embodiment, this data includes each threads' CPI value. When a thread is moved, data regarding the thread and its performance at the time it was moved is recorded along with a timestamp. The data regarding previous moves is used to determine whether a thread's performance is improved following the move.
摘要翻译：提供了一种利用多个SMT处理器的同时多线程（SMT）处理器环境中调度线程的系统和方法。识别在每个SMT处理器上运行的执行不良线程。被识别后，执行不良的线程被移动到不同的SMT处理器。捕获关于线程性能的数据。在一个实施例中，该数据包括每个线程的CPI值。当线程移动时，与线程及其在移动时的性能相关的数据与时间戳一起被记录。关于先前移动的数据用于确定线程的性能是否随着移动而改善。

39. 发明授权

US09262357B2 Associating process priority with I/O queuing 有权
标题翻译：将流程优先级与I / O排队关联
公开(公告)号：US09262357B2
公开(公告)日：2016-02-16
申请号：US12240190
申请日：2008-09-29
申请人： Jos M. Accapadi , Andrew Dunshea , Vandana Mallempati , Agustin Mena, III
发明人： Jos M. Accapadi , Andrew Dunshea , Vandana Mallempati , Agustin Mena, III
IPC分类号： G06F3/00 , G06F13/364
CPC分类号： G06F13/362 , G06F13/364
摘要： Input/output (I/O) requests generated by processes are typically stored in I/O queues. Because the queued I/O requests may not be associated with the processes that generated them, changing a process' priority may not affect the priority of the I/O requests generated by the process. Therefore, after the process' priority has been increased, it may be forced to wait for an I/O handler to service its I/O request, which may be stuck behind an I/O request generated by a lower priority process. Functionality can be implemented to associate the processes' priorities with the I/O requests generated by the processes. Also, reordering the queued I/O requests to reflect changes in the processes' priorities can ensure that the I/O requests from high priority processes are serviced before the I/O requests from low priority processes. This can ensure efficient processing and lower wait times for high priority processes.
摘要翻译：由进程生成的输入/输出（I / O）请求通常存储在I / O队列中。因为排队的I / O请求可能不与生成它们的进程相关联，所以更改进程的优先级可能不会影响进程生成的I / O请求的优先级。因此，在进程优先级增加之后，可能迫使其等待I / O处理程序来服务其I / O请求，这可能会被较低优先级进程生成的I / O请求所困扰。可以实现功能，将进程的优先级与进程生成的I / O请求相关联。此外，重新排序排队的I / O请求以反映进程优先级的更改可以确保在优先级较低的进程的I / O请求之前对来自高优先级进程的I / O请求进行服务。这可以确保高优先级进程的有效处理和较短的等待时间。

40. 发明授权

US09201703B2 Sharing kernel services among kernels 有权
标题翻译：在内核之间共享内核服务
公开(公告)号：US09201703B2
公开(公告)日：2015-12-01
申请号：US11422656
申请日：2006-06-07
申请人： Andrew Dunshea , Diane G. Flemming
发明人： Andrew Dunshea , Diane G. Flemming
IPC分类号： G06F3/00 , G06F9/44 , G06F9/46 , G06F13/00 , G06F9/50
CPC分类号： G06F9/5077
摘要： Sharing kernel services among kernels, including receiving, by a partition manager from an application in a logical partition, a first system call for a kernel service from a first kernel, the first system call having form and content compatible with the first kernel, generating, in dependence upon the first system call, a second system call for the kernel service from a second kernel, the second system call having form and content compatible with the second kernel, and sending the second system call through the partition manager to the second kernel for execution.
摘要翻译：在内核之间共享内核服务，包括由分区管理器从逻辑分区中的应用程序接收来自第一内核的内核服务的第一系统调用，第一系统调用具有与第一内核兼容的形式和内容，根据第一系统调用，第二系统调用来自第二内核的内核服务，第二系统调用具有与第二内核兼容的形式和内容，并且通过分区管理器将第二系统调用发送到第二内核，用于执行。

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