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1. 发明授权

US08381215B2 Method and system for power-management aware dispatcher 有权
标题翻译：电力管理感知调度员的方法和系统
公开(公告)号：US08381215B2
公开(公告)日：2013-02-19
申请号：US11863026
申请日：2007-09-27
申请人： Darrin P. Johnson , Eric C. Saxe , Bart Smaalders
发明人： Darrin P. Johnson , Eric C. Saxe , Bart Smaalders
IPC分类号： G06F9/46
CPC分类号： G06F1/3203 , G06F1/324 , G06F1/329 , G06F9/5027 , G06F9/5094 , G06F2209/508 , Y02D10/126 , Y02D10/22 , Y02D10/24
摘要： In general the invention relates to a system. The system includes processors each having a processing state. The system further includes a dispatcher operatively connected to the plurality of processors and configured to: receive a first thread to dispatch, select one of the processors to dispatch the thread to based on the processing state the processors and a power management policy, and dispatch the thread to the selected one of the plurality of processors.
摘要翻译：一般来说，本发明涉及一种系统。该系统包括具有处理状态的处理器。所述系统还包括可操作地连接到所述多个处理器的调度器，并且被配置为：接收第一线程以调度，选择所述处理器之一以基于处理器的处理状态和电源管理策略来调度线程，并且发送线程到多个处理器中的所选择的一个。

2. 发明授权

US08302098B2 Hardware utilization-aware thread management in multithreaded computer systems 有权
标题翻译：多线程计算机系统中的硬件利用率感知线程管理
公开(公告)号：US08302098B2
公开(公告)日：2012-10-30
申请号：US11952037
申请日：2007-12-06
申请人： Darrin Paul Johnson , Eric Christopher Saxe , Bart Smaalders
发明人： Darrin Paul Johnson , Eric Christopher Saxe , Bart Smaalders
IPC分类号： G06F9/46 , G06F1/00 , G06F1/32
CPC分类号： G06F9/5088 , G06F9/5094 , Y02D10/22 , Y02D10/32
摘要： A device, system, and method are directed towards managing threads in a computer system with one or more processing units, each processing unit having a corresponding hardware resource. Threads are characterized based on their use or requirements for access to the hardware resource. The threads are distributed among the processing units in a configuration that leaves at least one processing unit with threads that have an aggregate zero or low usage of the hardware resource. Power may be reduced or turned off to the instances of the hardware resource that have zero or low usage. Distribution may be based on one or more of a number of specifications or factors, such as user power management specifications, power usage, performance, and other factors.
摘要翻译：一种设备，系统和方法旨在通过一个或多个处理单元来管理计算机系统中的线程，每个处理单元具有对应的硬件资源。线程的特点是基于其对硬件资源访问的使用或要求。线程以配置形式分布在处理单元中，该配置使至少一个处理单元具有硬件资源的聚合零或低使用量的线程。功率可以减少或关闭到具有零或低使用率的硬件资源的实例。分发可以基于许多规范或因素中的一个或多个，诸如用户功率管理规范，功率使用，性能和其他因素。

3. 发明授权

US08219993B2 Frequency scaling of processing unit based on aggregate thread CPI metric 有权
标题翻译：基于聚合线程CPI度量的处理单元的频率缩放
公开(公告)号：US08219993B2
公开(公告)日：2012-07-10
申请号：US12038705
申请日：2008-02-27
申请人： Darrin Paul Johnson , Eric Christopher Saxe , Bart Smaalders
发明人： Darrin Paul Johnson , Eric Christopher Saxe , Bart Smaalders
IPC分类号： G06F9/46 , G06F1/00
CPC分类号： G06F1/3203 , G06F1/324 , G06F1/3287 , G06F9/3851 , Y02D10/126 , Y02D10/171 , Y02D10/24
摘要： A device, system, and method are directed towards managing power consumption in a computer system with one or more processing units, each processing unit executing one or more threads. Threads are characterized based on a cycles per instruction (CPI) characteristic of the thread. A clock frequency of each processing unit may be configured based on the CPI of each thread assigned to the processing unit. In a system wherein higher clock frequencies consume greater amounts of power, the CPI may be used to determine a desirable clock frequency. The CPI of each thread may also be used to assign threads to each processing unit, so that threads having similar characteristics are grouped together. Techniques for assigning threads and configuring processor frequency may be combined to affect performance and power consumption. Various specifications or factors may also be considered when scheduling threads or determining processor frequencies.
摘要翻译：一种设备，系统和方法旨在管理具有一个或多个处理单元的计算机系统中的功耗，每个处理单元执行一个或多个线程。线程根据线程的每个指令周期（CPI）特性进行表征。可以基于分配给处理单元的每个线程的CPI来配置每个处理单元的时钟频率。在较高时钟频率消耗较大功率的系统中，CPI可用于确定期望的时钟频率。每个线程的CPI也可以用于将线程分配给每个处理单元，使得具有相似特征的线程被分组在一起。用于分配线程和配置处理器频率的技术可以组合以影响性能和功耗。在调度线程或确定处理器频率时也可以考虑各种规格或因素。

4. 发明申请

US20090089792A1 METHOD AND SYSTEM FOR MANAGING THERMAL ASYMMETRIES IN A MULTI-CORE PROCESSOR 审中-公开
标题翻译：用于在多核处理器中管理热不对称的方法和系统
公开(公告)号：US20090089792A1
公开(公告)日：2009-04-02
申请号：US11863010
申请日：2007-09-27
申请人： Darrin P. Johnson , Eric C. Saxe , Bart Smaalders
发明人： Darrin P. Johnson , Eric C. Saxe , Bart Smaalders
IPC分类号： G06F9/46 , G06F13/10
CPC分类号： G06F9/4881 , G06F2209/483
摘要： In general, the invention relates to a system that includes a multi-core processor and a dispatcher operatively connected to the multi-core processor. The dispatcher is configured to receive a first plurality of threads during a first period of time, dispatch the first plurality of threads only to a first core of the plurality of cores, receive a second plurality of threads during a second period of time, dispatch the second plurality of threads only to a second core of the plurality of cores, migrate to the second core any of the first plurality of threads that are still executing on the first after the first period of time has elapsed. The duration of the first period of time and the duration of the second period of time are determined using a thread migration schedule, and thread migration schedule is determined using at least one thermal characteristic of the multi-core processor.
摘要翻译：通常，本发明涉及一种包括多核处理器和可操作地连接到多核处理器的调度器的系统。调度器被配置为在第一时间段期间接收第一多个线程，仅将第一多个线程仅分配到多个核心的第一核心，在第二时间段期间接收第二多个线程，第二多个线程仅到多个核心的第二核心，在经过第一时间段之后，将第一多个线程中的任一个迁移到第一核心，该第一多个线程仍然在第一个时间段上仍然执行。使用线程迁移调度来确定第一时间段的持续时间和第二时间段的持续时间，并且使用多核处理器的至少一个热特性来确定线程迁移调度。

5. 发明申请

US20080117925A1 Method and apparatus for performing syntax-directed application layer data buffering 有权
标题翻译：用于执行语法定向应用层数据缓冲的方法和装置
公开(公告)号：US20080117925A1
公开(公告)日：2008-05-22
申请号：US11604086
申请日：2006-11-22
申请人： Bruce W. Curtis , Darrin P. Johnson , Bart Smaalders
发明人： Bruce W. Curtis , Darrin P. Johnson , Bart Smaalders
IPC分类号： H04L12/56
CPC分类号： H04L67/04 , H04L67/28 , H04L67/2842 , H04L67/327
摘要： One embodiment of the present invention provides a system that facilitates buffering data at a kernel in a computer system, wherein the data is buffered based on the structure of a message contained in the data. The system operates by receiving data at a computer system from an external source. Next, the system buffers the data at a kernel on the computer system. As the system buffers the data, the system also determines if the buffered data constitutes a complete message as defined by a communication protocol. If so, the system forwards the buffered data to an application on the computer system.
摘要翻译：本发明的一个实施例提供一种便于在计算机系统中的内核缓冲数据的系统，其中基于数据中包含的消息的结构对数据进行缓冲。该系统通过从计算机系统从外部源接收数据来操作。接下来，系统将数据缓冲在计算机系统的内核上。当系统缓冲数据时，系统还确定缓冲数据是否构成由通信协议定义的完整消息。如果是这样，系统将缓冲的数据转发到计算机系统上的应用程序。

6. 发明申请

US20080109790A1 Determining causes of software regressions based on regression and delta information 有权
标题翻译：基于回归和增量信息确定软件回归的原因
公开(公告)号：US20080109790A1
公开(公告)日：2008-05-08
申请号：US11595396
申请日：2006-11-08
申请人： Damien Farnham , Darrin P. Johnson , Sean McGrath , Bart Smaalders
发明人： Damien Farnham , Darrin P. Johnson , Sean McGrath , Bart Smaalders
IPC分类号： G06F9/44
CPC分类号： G06F8/71 , G06F11/3688
摘要： Techniques for isolating software regressions are provided. In one approach, QTrace is used to generate DTrace scripts to gather timing information of one or more portions of source code during a test of particular version of a program. Based on results of one or more tests of multiple versions of a program, a regression is identified with respect to a particular portion of source code. It is determined that the particular portion of source code was changed during an intermediate version of the program (i.e., between two tests). The intermediate version and/or the particular portion of source code are identified as being a potential source of the regression.
摘要翻译：提供了分离软件回归的技术。在一种方法中，QTrace用于生成DTrace脚本，用于在程序的特定版本的测试期间收集源代码的一个或多个部分的时序信息。基于程序的多个版本的一个或多个测试的结果，相对于源代码的特定部分识别回归。确定在程序的中间版本（即在两个测试之间）中源代码的特定部分被改变。源代码的中间版本和/或特定部分被识别为回归的潜在来源。

7. 发明申请

US20090217277A1 USE OF CPI POWER MANAGEMENT IN COMPUTER SYSTEMS 有权
标题翻译：在计算机系统中使用CPI电源管理
公开(公告)号：US20090217277A1
公开(公告)日：2009-08-27
申请号：US12038705
申请日：2008-02-27
申请人： Darrin Paul Johnson , Eric Christopher Saxe , Bart Smaalders
发明人： Darrin Paul Johnson , Eric Christopher Saxe , Bart Smaalders
IPC分类号： G06F9/30 , G06F1/06
CPC分类号： G06F1/3203 , G06F1/324 , G06F1/3287 , G06F9/3851 , Y02D10/126 , Y02D10/171 , Y02D10/24
摘要： A device, system, and method are directed towards managing power consumption in a computer system with one or more processing units, each processing unit executing one or more threads. Threads are characterized based on a cycles per instruction (CPI) characteristic of the thread. A clock frequency of each processing unit may be configured based on the CPI of each thread assigned to the processing unit. In a system wherein higher clock frequencies consume greater amounts of power, the CPI may be used to determine a desirable clock frequency. The CPI of each thread may also be used to assign threads to each processing unit, so that threads having similar characteristics are grouped together. Techniques for assigning threads and configuring processor frequency may be combined to affect performance and power consumption. Various specifications or factors may also be considered when scheduling threads or determining processor frequencies.
摘要翻译：一种设备，系统和方法旨在管理具有一个或多个处理单元的计算机系统中的功耗，每个处理单元执行一个或多个线程。线程根据线程的每个指令周期（CPI）特性进行表征。可以基于分配给处理单元的每个线程的CPI来配置每个处理单元的时钟频率。在较高时钟频率消耗较大功率的系统中，CPI可用于确定期望的时钟频率。每个线程的CPI也可以用于将线程分配给每个处理单元，使得具有相似特征的线程被分组在一起。用于分配线程和配置处理器频率的技术可以组合以影响性能和功耗。在调度线程或确定处理器频率时也可以考虑各种规格或因素。

8. 发明授权

US07380248B1 Queue alerts 有权
标题翻译：队列警报
公开(公告)号：US07380248B1
公开(公告)日：2008-05-27
申请号：US10788790
申请日：2004-02-26
申请人： Miguel Isenberg , Bryan M. Cantrill , Bart Smaalders , Joseph J. Bonasera
发明人： Miguel Isenberg , Bryan M. Cantrill , Bart Smaalders , Joseph J. Bonasera
IPC分类号： G06F3/00 , G06F9/44 , G06F9/46 , G06F13/00
CPC分类号： G06F9/542 , G06F2209/543
摘要： Methods and apparatus, including computer program products, implementing and using techniques for alerting one or more computer software application threads waiting to retrieve events from an event port. An alert event generated by a computer software application is received at the event port. A state of the event port is changed to an alert state, if the event port is not already in an alert state, in response to receiving the alert event. One or more of the computer software application threads is notified about the alert state of the event port.
摘要翻译：方法和装置，包括计算机程序产品，实施和使用技术，用于警告一个或多个计算机软件应用程序线程等待从事件端口检索事件。在事件端口处接收由计算机软件应用产生的警报事件。响应于接收到警报事件，事件端口的状态更改为警报状态，如果事件端口尚未处于警报状态。一个或多个计算机软件应用程序线程被通知有关事件端口的警报状态。

9. 发明授权

US5937187A Method and apparatus for execution and preemption control of computer process entities 失效
标题翻译：计算机处理实体的执行和抢占控制的方法和装置
公开(公告)号：US5937187A
公开(公告)日：1999-08-10
申请号：US675236
申请日：1996-07-01
申请人： Nicolai Kosche , Dave Singleton , Bart Smaalders , Andrew Tucker
发明人： Nicolai Kosche , Dave Singleton , Bart Smaalders , Andrew Tucker
IPC分类号： G06F9/46 , G06F9/00
CPC分类号： G06F9/52
摘要： In a multiprocessing computer system, a schedulable process entity (such as a UNIX process, a Solaris lightweight process, or a Windows NT thread) sets a memory flag (sc.sub.-- nopreempt) before acquiring a shared resource. This flag tells the operating system that the process entity should not be preempted. When it is time for the process entity to be preempted, but sc.sub.-- nopreempt is set, the operating system sets a flag (sc.sub.-- yield) to tell the process entity that the entity should surrender the CPU when the entity releases the shared resource. However, the entity is not preempted but continues to run. When the entity releases the shared resource, the entity checks the sc.sub.-- yield flag. If the flag is set, the entity makes an OS call to surrender the CPU.
摘要翻译：在多处理计算机系统中，可调度的进程实体（例如UNIX进程，Solaris轻量进程或Windows NT线程）在获取共享资源之前设置内存标志（sc-nopreempt）。该标志告诉操作系统，流程实体不应被抢占。当流程实体被抢占时，但设置sc-nopreempt时，操作系统设置一个标志（sc-yield）来告知进程实体实体释放共享资源时该实体应该放弃CPU。但是，该实体不被抢占，而是继续运行。当实体释放共享资源时，实体检查sc-yield标志。如果标志被设置，则实体进行OS调用以投降CPU。

10. 发明授权

US07313795B2 Method and system for managing resource allocation in non-uniform resource access computer systems 有权
标题翻译：用于管理非均匀资源访问计算机系统中的资源分配的方法和系统
公开(公告)号：US07313795B2
公开(公告)日：2007-12-25
申请号：US10446741
申请日：2003-05-27
申请人： Jonathan Chew , Robert L. Berube , Kevin Clarke , Tim Marsland , Eric Saxe , Bart Smaalders
发明人： Jonathan Chew , Robert L. Berube , Kevin Clarke , Tim Marsland , Eric Saxe , Bart Smaalders
IPC分类号： G06F9/46 , G06F15/16 , G06F15/173
CPC分类号： G06F9/5061 , G06F2209/502
摘要： A method and system of managing resource allocation in a non-uniform resource access computer system is disclosed. A method comprises determining access costs between resources in a computer system having non-uniform access costs between the resources. The method also includes constructing a hierarchical data structure comprising the access costs. The hierarchical data structure is traversed to manage a set of the resources.
摘要翻译：公开了一种在不均匀资源访问计算机系统中管理资源分配的方法和系统。一种方法包括确定在资源之间具有不均匀访问成本的计算机系统中的资源之间的访问成本。该方法还包括构建包括访问成本的分层数据结构。遍历层次数据结构以管理一组资源。

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