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1. 发明授权

US06658654B1 Method and system for low-overhead measurement of per-thread performance information in a multithreaded environment 失效
标题翻译：在多线程环境中对每线程性能信息进行低开销测量的方法和系统
公开(公告)号：US06658654B1
公开(公告)日：2003-12-02
申请号：US09612348
申请日：2000-07-06
申请人： Robert Francis Berry , Robert Tod Dimpsey , Frank Eliot Levine , Enio Manuel Pineda , Robert John Urquhart
发明人： Robert Francis Berry , Robert Tod Dimpsey , Frank Eliot Levine , Enio Manuel Pineda , Robert John Urquhart
IPC分类号： G06F944
CPC分类号： G06F11/3466 , G06F11/3409 , G06F2201/86 , G06F2201/865 , G06F2201/88
摘要： A low-overhead performance measurement of an application executing in a data processing system is provided in order to generate per-thread performance information in a multithreaded environment. While a first set of events is being monitored for a particular thread as a first metric, events that may indirectly cause inaccuracies in the first metric, such as thread switches, are also monitored as a second metric. The presence of a positive value for the second metric is then used to determine that the first metric is inaccurate or unreliable, after which the first metric may be discarded; otherwise, the first metric is considered accurate. For example, the first metric may then be considered a thread-relative metric as it has been observed during a time period in which no thread switch events or interrupt events would have caused the first metric to become inaccurate during the execution of a particular thread.
摘要翻译：提供在数据处理系统中执行的应用的低开销性能测量，以便在多线程环境中生成每线程性能信息。虽然正在将特定线程的第一组事件作为第一度量被监视，但是也可以间接地导致第一度量中的错误（例如线程切换）的事件作为第二度量被监视。然后使用第二度量的正值的存在来确定第一度量不准确或不可靠，之后可以丢弃第一度量; 否则，第一个度量被认为是准确的。例如，可以将第一度量视为线程相对度量，如在其中没有线程切换事件或中断事件将导致第一度量在特定线程的执行期间变得不准确的时间段期间观察到的。

2. 发明授权

US06728955B1 Processing events during profiling of an instrumented program 失效
标题翻译：在分析仪器化程序时处理事件
公开(公告)号：US06728955B1
公开(公告)日：2004-04-27
申请号：US09435005
申请日：1999-11-05
申请人： Robert Francis Berry , John Day Howard , Chester Charles John, Jr. , Frank Eliot Levine , Donald L. Mulvey , Enio Manuel Pineda , Robert J. Urquhart
发明人： Robert Francis Berry , John Day Howard , Chester Charles John, Jr. , Frank Eliot Levine , Donald L. Mulvey , Enio Manuel Pineda , Robert J. Urquhart
IPC分类号： G06F945
CPC分类号： G06F11/3409 , G06F11/3466 , G06F2201/835 , G06F2201/86 , G06F2201/865 , G06F2201/88
摘要： A user may specify a vector of metrics to be used while profiling a program. The vector of metrics may optionally be thread-relative. In response to a notification of an occurrence of the current event, a thread-relative elapsed metric is computed by: determining a current thread; retrieving a stored reference metric for the preceding event of the current thread; obtaining a current reference metric; and computing the thread-relative elapsed metric as a difference between the current reference metric and the stored reference metric. In order to prevent the generation of redundant metric information, the information associated with the vector of metrics maybe placed into the trace records in several different space-saving formats.
摘要翻译：用户可以在分析程序时指定要使用的度量矢量。度量矢量可以可选地是线程相对的。响应于当前事件的发生的通知，通过以下方式来计算线程相对逝去度量：确定当前线程; 检索当前线程的前一事件的存储引用度量; 获得当前参考度量; 以及将所述线程相对逝去度量计算为所述当前参考度量和所存储的参考度量之间的差。为了防止产生冗余度量信息，与度量矢量相关联的信息可以以几种不同的节省空间的格式放置在跟踪记录中。

3. 发明授权

US07051026B2 System and method for monitoring software locks 失效
标题翻译：用于监控软件锁的系统和方法
公开(公告)号：US07051026B2
公开(公告)日：2006-05-23
申请号：US10210832
申请日：2002-07-31
申请人： Robert Francis Berry , Robert Todd Dimpsey , Benjamin Joseph Hoflich , Frank Eliot Levine , Enio Manuel Pineda
发明人： Robert Francis Berry , Robert Todd Dimpsey , Benjamin Joseph Hoflich , Frank Eliot Levine , Enio Manuel Pineda
IPC分类号： G06F17/30
CPC分类号： G06F11/3466 , G06F9/526 , G06F11/3419 , G06F12/0253 , G06F2201/825 , G06F2201/86 , G06F2201/865 , G06F2201/88 , Y10S707/99938 , Y10S707/99942 , Y10S707/99953
摘要： A system and method for monitoring software locks is presented. Metric data collection is invoked only when thin lock contention arises in a computer system's application layer. Instrumentation in a computer system's middleware layer tracks time-based metric information such as a waiting time for an application to acquire a lock. Instrumentation tracks garbage collection events and removes garbage collection time durations from time-based metric data as to not distort time-based metric data. Instrumentation also tracks quantity-based events such as the number of applications that request a particular lock. An instrumentation user may retrieve metric data for computer system performance analysis.
摘要翻译：提出了一种用于监控软件锁的系统和方法。只有在计算机系统的应用层出现薄锁争用时才调用公制数据采集。计算机系统中间件层中的仪器跟踪基于时间的度量信息，例如应用程序获取锁定的等待时间。仪器跟踪垃圾收集事件，并从基于时间的度量标准数据中删除垃圾收集时间，以防止基于时间的度量标准数据。仪器还跟踪基于数量的事件，例如请求特定锁的应用程序的数量。仪器用户可以检索计算机系统性能分析的度量数据。

4. 发明授权

US06662359B1 System and method for injecting hooks into Java classes to handle exception and finalization processing 失效
标题翻译：将钩子注入Java类中以处理异常和完成处理的系统和方法
公开(公告)号：US06662359B1
公开(公告)日：2003-12-09
申请号：US09620725
申请日：2000-07-20
申请人： Robert Francis Berry , John Day Howard , Riaz Y. Hussain , Frank Eliot Levine , Robert John Urquhart
发明人： Robert Francis Berry , John Day Howard , Riaz Y. Hussain , Frank Eliot Levine , Robert John Urquhart
IPC分类号： G06F944
CPC分类号： G06F11/3612 , G06F2209/481
摘要： The present invention is directed to a system, method and instructions for handling path flow exception and finalization processing in an object oriented programming language. Initially, each instrumentation method is checked for a code to indicated an exception being thrown. A hook is inserted before the exception code and identifies the method throwing the exception. Methods must also be checked for exception tables. When an exception table is found, then a hook is inserted at the entry point of each exception handler for every entry in the exception table. This hook identifies the method which catches the exception.
摘要翻译：本发明涉及一种用于处理面向对象编程语言中的路径流异常和完成处理的系统，方法和指令。最初，检查每个检测方法的代码以指示正在抛出的异常。在异常代码之前插入一个钩子，并识别抛出异常的方法。还必须检查异常表的方法。当找到异常表时，在异常表中的每个条目的每个异常处理程序的入口点插入一个钩子。该钩子标识捕获异常的方法。

5. 发明授权

US06553564B1 Process and system for merging trace data for primarily interpreted methods 失效
标题翻译：用于主要解释方法合并跟踪数据的过程和系统
公开(公告)号：US06553564B1
公开(公告)日：2003-04-22
申请号：US09343439
申请日：1999-06-30
申请人： William Preston Alexander, III , Robert Francis Berry , Frank Eliot Levine , Chester Charles John, Jr. , Robert John Urquhart
发明人： William Preston Alexander, III , Robert Francis Berry , Frank Eliot Levine , Chester Charles John, Jr. , Robert John Urquhart
IPC分类号： G06F944
CPC分类号： G06F11/3409 , G06F11/3419 , G06F11/3466 , G06F11/3476 , G06F2201/86 , G06F2201/865
摘要： A process and system for profiling code executing on a data processing system is provided. Event-based trace data is recorded in response to selected events, and the event-based trace data includes an indication of which code is being interrupted. The trace data may be processed to identify a thread or method that was executing during the event. A periodically occurring event is also detected, and a stack associated with the profiled code is identified in response to detection of the periodically occurring event, such as a timer interrupt. The stack is examined to identify each routine that is currently executing during the periodically occurring event.
摘要翻译：提供了用于在数据处理系统上执行代码分析的过程和系统。响应于所选择的事件记录基于事件的跟踪数据，并且基于事件的跟踪数据包括正在中断哪个代码的指示。可以处理跟踪数据以识别在事件期间正在执行的线程或方法。还检测到周期性发生的事件，并且响应于诸如定时器中断的周期性发生的事件的检测来识别与分析代码相关联的堆栈。检查堆栈以识别在周期性发生的事件期间当前正在执行的每个例程。

6. 发明授权

US06513155B1 Method and system for merging event-based data and sampled data into postprocessed trace output 失效
标题翻译：将基于事件的数据和采样数据合并到后处理跟踪输出中的方法和系统
公开(公告)号：US06513155B1
公开(公告)日：2003-01-28
申请号：US09343438
申请日：1999-06-30
申请人： William Preston Alexander, III , Robert Francis Berry , Frank Eliot Levine , Robert John Urquhart
发明人： William Preston Alexander, III , Robert Francis Berry , Frank Eliot Levine , Robert John Urquhart
IPC分类号： G06F1730
CPC分类号： G06F11/3409 , G06F11/3419 , G06F11/3466 , G06F11/3476 , G06F2201/86 , G06F2201/865
摘要： A process and system for profiling code executing on a data processing system is provided. Event-based trace data is recorded in response to selected events, and the event-based trace data includes an indication which code is being interrupted. The trace data may be processed to identify a thread or method that was executing during the event. A periodically occurring event is also detected, and a call stack associated with the profiled code is identified in response to detection of the periodically occurring event, such as a timer interrupt. The call stack is examined to identify each routine that is currently executing during the periodically occurring event, and the trace data is recorded with the call stack information. The trace data from the recorded events and the trace data from the call stacks are processed to generate a tree structure in which the nodes indicate the call structure of the routine information from both the trace events and the call stacks.
摘要翻译：提供了用于在数据处理系统上执行代码分析的过程和系统。响应于所选择的事件记录基于事件的跟踪数据，并且基于事件的跟踪数据包括哪个代码被中断的指示。可以处理跟踪数据以识别在事件期间正在执行的线程或方法。还检测到周期性发生的事件，并且响应于诸如定时器中断的周期性发生的事件的检测来识别与分析代码相关联的调用堆栈。检查呼叫堆栈以识别在周期性发生的事件期间当前正在执行的每个例程，并且利用呼叫堆栈信息记录跟踪数据。来自记录的事件的跟踪数据和来自调用堆栈的跟踪数据被处理以生成树结构，其中节点从跟踪事件和调用堆栈指示例程信息的调用结构。

7. 发明授权

US06338159B1 System and method for providing trace information 有权
标题翻译：提供跟踪信息的系统和方法
公开(公告)号：US06338159B1
公开(公告)日：2002-01-08
申请号：US09343424
申请日：1999-06-30
申请人： William Preston Alexander, III , Robert Francis Berry , Riaz Y. Hussain , Chester Charles John, Jr. , Frank Eliot Levine , Robert John Urquhart
发明人： William Preston Alexander, III , Robert Francis Berry , Riaz Y. Hussain , Chester Charles John, Jr. , Frank Eliot Levine , Robert John Urquhart
IPC分类号： G06F944
CPC分类号： G06F11/348 , G06F11/3466 , Y10S707/99953 , Y10S707/99957
摘要： The present invention is a system, method, and computer readable medium for representing program event trace information in a way which is very compact and efficient, and yet supports a wide variety of queries regarding system performance. The tracing and reduction of the present invention may be dynamic, in which case information is obtained and added to the trace representation in real-time. Alternately, the tracing and reduction may be static, in which case a trace text file or binary file is obtained from a trace buffer, and the reduction takes place using the trace file as input. The trace information, whether obtained statically or dynamically, is represented as a tree of events. The present invention may be used to present many types of trace information in a compact manner which supports performance queries. For example, the tree structure of the present invention may reflect the call stacks observed during a program's execution, and statistics regarding the memory allocated/deallocated in the various routines and call stacks may be stored at each node of the tree. The tree structure may be used to store performance information regarding Java bytecodes executed, memory allocated, or other types of performance information. The trace information is presented in a manner which is compact and efficient, and may be used to quickly and easily answer a variety of performance queries. Further, a system may be traced for long periods of time without losing useful performance information due to a limited buffer space.
摘要翻译：本发明是用于以非常紧凑和有效的方式表示节目事件跟踪信息的系统，方法和计算机可读介质，并且还支持关于系统性能的各种查询。本发明的追踪和缩减可以是动态的，在这种情况下，实时获得信息并添加到跟踪表示中。或者，跟踪和缩减可以是静态的，在这种情况下，从跟踪缓冲区获取跟踪文本文件或二进制文件，并且使用跟踪文件作为输入进行缩小。跟踪信息（无论是静态获取还是动态获取）都表示为事件树。本发明可以用于呈现支持性能查询的紧凑方式的许多类型的跟踪信息。例如，本发明的树结构可以反映在程序执行期间观察到的调用堆栈，并且关于在各种例程和调用堆栈中分配/释放的存储器的统计信息可以存储在树的每个节点处。树结构可以用于存储关于执行的Java字节码，分配的存储器或其他类型的性能信息的性能信息。跟踪信息以紧凑和高效的方式呈现，并且可以用于快速和容易地回答各种性能查询。此外，系统可以被追踪长时间，而不会由于有限的缓冲区空间而丢失有用的性能信息。

8. 发明授权

US06332117B1 General event stamping scheme 有权
标题翻译：一般事件冲压计划
公开(公告)号：US06332117B1
公开(公告)日：2001-12-18
申请号：US09177035
申请日：1998-10-22
申请人： Robert Francis Berry , Riaz Y. Hussain , Chester Charles John, Jr. , Frank Eliot Levine , Robert John Urquhart
发明人： Robert Francis Berry , Riaz Y. Hussain , Chester Charles John, Jr. , Frank Eliot Levine , Robert John Urquhart
IPC分类号： G06F1500
CPC分类号： G06F11/3466 , G06F11/3409 , G06F2201/835 , G06F2201/86 , G06F2201/88 , G06F2201/885
摘要： During the recording of events occurring within the operation of a data processing system, a user-selected metric of interest is recorded along with the trace data for each recorded event. The metric of interest is a monotonically increasing variable that provides a non-time relationship between the recorded events. This relationship may be time or non-time based.
摘要翻译：在记录在数据处理系统的操作期间发生的事件期间，记录用户选择的感兴趣度量以及每个记录事件的跟踪数据。感兴趣的度量是单调递增的变量，其在记录的事件之间提供非时间关系。这种关系可能是时间或非时间的。

9. 发明授权

US06732357B1 Determining and compensating for temporal overhead in trace record generation and processing 失效
标题翻译：确定和补偿跟踪记录生成和处理中的时间开销
公开(公告)号：US06732357B1
公开(公告)日：2004-05-04
申请号：US09414345
申请日：1999-10-07
申请人： Robert Francis Berry , Jesse Mannes Gordon , Riaz Y. Hussain , Frank Eliot Levine , Robert J. Urquhart
发明人： Robert Francis Berry , Jesse Mannes Gordon , Riaz Y. Hussain , Frank Eliot Levine , Robert J. Urquhart
IPC分类号： G06F945
CPC分类号： G06F11/3636 , G06F11/3419 , G06F11/3466 , G06F2201/835 , G06F2201/865
摘要： A program is profiled with enablement of trace record generation during a first period of time and with disablement of trace record generation during a second period of time. The number of trace records output during the first period of time is determined, and a trace overhead calibration value is computed as an average time for writing the number of trace records output during the first period of time. The trace overhead calibration value may be stored for subsequent use in a profiling-related process in the data processing system. The trace overhead compensation value represents the amount of time required to generate a trace record, and the trace times retrieved from the trace records are adjusted to compensate for the amount of time required to generate those trace records.
摘要翻译：在第一个时间段内对一个程序进行分析，以实现跟踪记录生成，并在第二个时间段内禁用跟踪记录生成。确定在第一时间段期间输出的跟踪记录的数量，并且计算跟踪开销校准值作为写入在第一时间段期间输出的跟踪记录数的平均时间。可以存储跟踪开销校准值以用于随后在数据处理系统中的分析相关过程中使用。跟踪开销补偿值表示生成跟踪记录所需的时间量，并且调整从跟踪记录检索的跟踪时间以补偿生成这些跟踪记录所需的时间量。

10. 发明授权

US06651243B1 Method and system for periodic trace sampling for real-time generation of segments of call stack trees 失效
标题翻译：用于定期跟踪采样的方法和系统，用于实时生成调用堆栈树的段
公开(公告)号：US06651243B1
公开(公告)日：2003-11-18
申请号：US09418379
申请日：1999-10-14
申请人： Robert Francis Berry , Frank Eliot Levine , Robert J. Urguhart
发明人： Robert Francis Berry , Frank Eliot Levine , Robert J. Urguhart
IPC分类号： G06F944
CPC分类号： G06F11/3419 , G06F11/3466 , G06F2201/835 , G06F2201/86 , G06F2201/88 , Y02D10/34
摘要： A method and system for profiling a program using periodic trace sampling is provided. During the execution of the program, sample-based profiling of the executing program is performed—for a predetermined period, a profiler performs trace processing for the program, after which the profiler pauses and does not perform trace processing for a predetermined period. The periods controlling the profiler may be selected by a user, and the periods may be measured by temporal or non-temporal metrics. The profiler cycles through these periods, during which selected events are processed to generate a profile of the execution flows within the program. For each sample period, a tree data structure is generated in which nodes of the tree data structure represent the routines of the program that execute during the sample period, as may be indicated by entry and exit events caused by the execution of the routines. When the execution of the program is complete, the tree data structures from each sample period are merged into a resulting tree data structure.
摘要翻译：提供了一种使用周期性跟踪采样来分析程序的方法和系统。在执行程序期间，执行执行程序的基于样本的分析 - 在预定时间段内，轮廓仪对程序执行跟踪处理，之后轮廓仪暂停并且在预定时间段内不执行跟踪处理。可以由用户选择控制分析器的周期，并且可以通过时间或非时间度量来测量周期。分析器在这些周期中循环，在此期间处理所选择的事件以在程序内生成执行流的简档。对于每个采样周期，生成树数据结构，其中树数据结构的节点表示在采样周期期间执行的程序的例程，可以由由例程的执行引起的进入和退出事件来指示。当程序的执行完成时，来自每个采样周期的树数据结构被合并到结果树数据结构中。

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