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。

公开(公告)号：US08612986B2

公开(公告)日：2013-12-17

申请号：US13528645

申请日：2012-06-20

申请人： Jos M. Accapadi ,  Mathew Accapadi ,  Andrew Dunshea ,  Mark E. Hack ,  Agustin Mena, III ,  Mysore S. Srinivas

发明人： Jos M. Accapadi ,  Mathew Accapadi ,  Andrew Dunshea ,  Mark E. Hack ,  Agustin Mena, III ,  Mysore S. Srinivas

IPC分类号： G06F9/46 ,  G06F13/24

CPC分类号： G06F9/5027 ,  G06F9/4812

摘要： A computer program product for scheduling threads in a multiprocessor computer comprises computer program instructions configured to select a thread in a ready queue to be dispatched to a processor and determine 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, the computer program instructions are configured to select a processor, set a current processor priority register of the selected processor to least favored, and dispatch the thread from the ready queue to the selected processor.

摘要翻译： 一种用于在多处理器计算机中调度线程的计算机程序产品包括计算机程序指令，其被配置为选择准备队列中的线程以分派到处理器，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了中断屏蔽标志，则将计算机程序指令配置为选择处理器，将所选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 到所选择的处理器。

公开(公告)号：US20100082855A1

公开(公告)日：2010-04-01

申请号：US12240190

申请日：2008-09-29

申请人： Jos Accapadi ,  Andrew Dunshea ,  Vandana Mallempati ,  Agustin Mena, III

发明人： Jos Accapadi ,  Andrew Dunshea ,  Vandana Mallempati ,  Agustin Mena, III

IPC分类号： 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。

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。

公开(公告)号：US20120260257A1

公开(公告)日：2012-10-11

申请号：US13528645

申请日：2012-06-20

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： A computer program product for scheduling threads in a multiprocessor computer comprises computer program instructions configured to select a thread in a ready queue to be dispatched to a processor and determine 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, the computer program instructions are configured to select a processor, set a current processor priority register of the selected processor to least favored, and dispatch the thread from the ready queue to the selected processor.

摘要翻译： 一种用于在多处理器计算机中调度线程的计算机程序产品包括计算机程序指令，其被配置为选择准备队列中的线程以分派到处理器，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了中断屏蔽标志，则将计算机程序指令配置为选择处理器，将所选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 到所选择的处理器。

公开(公告)号：US07962913B2

公开(公告)日：2011-06-14

申请号：US12342352

申请日：2008-12-23

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。

公开(公告)号：US07543124B1

公开(公告)日：2009-06-02

申请号：US12170218

申请日：2008-07-09

申请人： Mathew Accapadi ,  Dirk Michel ,  Andrew Dunshea ,  Jos M. Accapadi

发明人： Mathew Accapadi ,  Dirk Michel ,  Andrew Dunshea ,  Jos M. Accapadi

IPC分类号： G06F12/07 ,  G06F12/57

CPC分类号： G06F12/126

摘要： A computer-implemented system, method, and program product is disclosed for managing memory pages in a memory that includes a page replacement function. The method includes detecting that a sequence of pages is read by an application into the memory. The method continues by initiating a read-ahead to access a plurality of pages including the sequence of pages and a next page that has not yet been read, and storing the plurality in a page frame table of the memory. During the read-ahead, the method sets a soft-pin bit in the page frame table corresponding to each of the pages of the plurality of pages in the read-ahead. Each the soft-pin bit temporarily reserves its respective page from replacement by the page replacement function.

摘要翻译： 公开了一种用于管理包括页面替换功能的存储器中的存储器页面的计算机实现的系统，方法和程序产品。 该方法包括检测一系列页面被应用程序读入存储器。 该方法继续通过启动预读来访问包括页序列的多个页面和尚未被读取的下一页面，并将多个页面存储在存储器的页面框架表中。 在预读期间，该方法设置与预读中的多个页面中的每页相对应的页框表中的软针位。 每个软针位通过页面更换功能临时保留其替换页面。

公开(公告)号：US20080256324A1

公开(公告)日：2008-10-16

申请号：US12143552

申请日：2008-06-20

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。

公开(公告)号：US08422370B2

公开(公告)日：2013-04-16

申请号：US12163064

申请日：2008-06-27

申请人： Jos M. Accapadi ,  Andrew Dunshea ,  Gary L. Nevling

发明人： Jos M. Accapadi ,  Andrew Dunshea ,  Gary L. Nevling

IPC分类号： H04J1/16

CPC分类号： H04L1/188 ,  H04L1/1841 ,  H04L1/1896 ,  H04L69/28 ,  H04L69/324 ,  H04L69/326

摘要： A mechanism is provided to determine an average rate of duplicate packets per connection for packets received by a node over an interface. The mechanism selects a connection from the connections established over the interface, determines that a rate of duplicate packets for the selected connection exceeds the average rate of duplicate packets by a threshold percentage, and sends a message to a transmitter of the duplicate packets over the connection to increase a timeout interval to retransmit packets.

摘要翻译： 提供了一种机制来确定由接口上的节点接收的分组的每个连接的重复分组的平均速率。 该机制从通过接口建立的连接中选择连接，确定所选连接的重复数据包的速率超过重复分组的平均速率阈值百分比，并通过连接向发送方发送重复数据包 增加重传数据包的超时间隔。

公开(公告)号：US08230430B2

公开(公告)日：2012-07-24

申请号：US12059461

申请日：2008-03-31

申请人： Jos M. Accapadi ,  Matthew Accapadi ,  Andrew Dunshea ,  Mark E. Hack ,  Agustin Mena ,  Mysore S. Srinivas

发明人： Jos M. Accapadi ,  Matthew Accapadi ,  Andrew Dunshea ,  Mark E. Hack ,  Agustin Mena ,  Mysore S. 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。