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1. 发明申请

US20080120081A1 MODELING AND SIMULATING FLOW PROPAGATION IN DYNAMIC BANDWIDTH SYSTEMS 有权
标题翻译：动态带宽系统的建模与仿真流程传播
公开(公告)号：US20080120081A1
公开(公告)日：2008-05-22
申请号：US11941186
申请日：2007-11-16
申请人： Karthikeyan CHANDRASHEKAR , Alain J. Cohen , Paul M. Janes , David Boyd , Stefan Znam , Pradeep Singh
发明人： Karthikeyan CHANDRASHEKAR , Alain J. Cohen , Paul M. Janes , David Boyd , Stefan Znam , Pradeep Singh
IPC分类号： G06G7/50
CPC分类号： H04L41/145 , H04L41/0896 , H04L41/22
摘要： In a network that includes static bandwidth and dynamic bandwidth links, traffic flow at the OSI network layer is simulated at a traffic-flow level at interfaces to fixed bandwidth links, and simulated at a discrete-packet level at interfaces to dynamic bandwidth links. The resultant discrete-packet reception events at the receiving interface(s) of the dynamic bandwidth link are processed to determine the effective bandwidth/throughput of the link, as well as the allocation of this bandwidth among the individual flows through the link. The discrete-packet level receptions are used to reconstruct the parameters of the traffic flow at the network layer of the receiving interface, and this determined traffic flow is simulated accordingly at the next link, depending upon whether the next link is a static or dynamic bandwidth link.
摘要翻译：在包含静态带宽和动态带宽链路的网络中，在固定带宽链路的接口处，在业务流级别模拟OSI网络层的流量，并在离散分组级别模拟动态带宽链路的接口。在动态带宽链路的接收接口处的结果离散分组接收事件被处理以确定链路的有效带宽/吞吐量，以及通过链路在各个流中分配该带宽。离散分组级接收用于重构接收接口的网络层的业务流的参数，根据下一个链路是静态带宽还是动态带宽，在下一个链路上相应地模拟确定的流量链接。

2. 发明授权

US09253045B2 Modeling and simulating flow propagation in dynamic bandwidth systems 有权
标题翻译：在动态带宽系统中建模和模拟流传播
公开(公告)号：US09253045B2
公开(公告)日：2016-02-02
申请号：US11941186
申请日：2007-11-16
申请人： Karthikeyan Chandrashekar , Alain J. Cohen , Paul M. Janes , David Boyd , Stefan Znam , Pradeep Singh
发明人： Karthikeyan Chandrashekar , Alain J. Cohen , Paul M. Janes , David Boyd , Stefan Znam , Pradeep Singh
IPC分类号： G06F17/50 , G06G7/62 , H04L12/24
CPC分类号： H04L41/145 , H04L41/0896 , H04L41/22
摘要： In a network that includes static bandwidth and dynamic bandwidth links, traffic flow at the OSI network layer is simulated at a traffic-flow level at interfaces to fixed bandwidth links, and simulated at a discrete-packet level at interfaces to dynamic bandwidth links. The resultant discrete-packet reception events at the receiving interface(s) of the dynamic bandwidth link are processed to determine the effective bandwidth/throughput of the link, as well as the allocation of this bandwidth among the individual flows through the link. The discrete-packet level receptions are used to reconstruct the parameters of the traffic flow at the network layer of the receiving interface, and this determined traffic flow is simulated accordingly at the next link, depending upon whether the next link is a static or dynamic bandwidth link.
摘要翻译：在包含静态带宽和动态带宽链路的网络中，在固定带宽链路的接口处，在业务流级别模拟OSI网络层的流量，并在离散分组级别模拟动态带宽链路的接口。在动态带宽链路的接收接口处的结果离散分组接收事件被处理以确定链路的有效带宽/吞吐量，以及通过链路在各个流中分配该带宽。离散分组级接收用于重构接收接口的网络层的业务流的参数，根据下一个链路是静态带宽还是动态带宽，在下一个链路上相应地模拟确定的流量链接。

3. 发明申请

US20130158950A1 APPLICATION PERFORMANCE ANALYSIS THAT IS ADAPTIVE TO BUSINESS ACTIVITY PATTERNS 审中-公开
标题翻译：应用性能分析适应业务活动模式
公开(公告)号：US20130158950A1
公开(公告)日：2013-06-20
申请号：US13570572
申请日：2012-08-09
申请人： Alain J. COHEN , Yiping DING , Stefan ZNAM
发明人： Alain J. COHEN , Yiping DING , Stefan ZNAM
IPC分类号： G06F17/00
CPC分类号： G06F17/00 , G06F11/3409 , G06F11/3442 , G06F11/3452 , G06F11/3495 , G06F2201/81 , H04L43/16 , H04L67/22 , H04L67/325 , H04L69/28
摘要： The present invention relates to a system and method for assessing application performance. hi some embodiments, the analysis considers external factors, such as business hours, time zone, etc., to identify or recognize distinctive intervals of application performance. These distinctive intervals correspond to different periods of activity by an enterprise or business and may occur in a cyclical manner or other type of pattern. The distinctive intervals defined by external factors are employed in the analysis to improve aggregating of statistics, setting of thresholds for performance monitoring and alarms, correlating business and performance, and the modeling of application performance. The metrics measured can include, among other things, measures of CPU and memory utilization, disk transfer rates, network performance, queue depths and application module throughput. Key performance indicators, such as transaction rates and round-trip response times may also be monitored.
摘要翻译：本发明涉及一种用于评估应用性能的系统和方法。在一些实施例中，分析考虑外部因素，例如营业时间，时区等，以识别或识别应用性能的不同间隔。这些不同的间隔对应于企业或企业的不同活动时期，并且可能以循环方式或其他类型的模式发生。在分析中采用外部因素定义的特征间隔，以提高统计量的聚合，设置性能监控和报警阈值，关联业务和性能，以及应用性能建模。测量的度量可以包括CPU和内存利用率，磁盘传输速率，网络性能，队列深度和应用程序模块吞吐量的度量。还可以监控关键业绩指标，如交易率和往返响应时间。

4. 发明授权

US07219047B2 Simulation with convergence-detection skip-ahead 有权
标题翻译：模拟与收敛检测跳过
公开(公告)号：US07219047B2
公开(公告)日：2007-05-15
申请号：US10112179
申请日：2002-03-28
申请人： Alain Cohen , Pradeep K. Singh , Arun Pasupathy , Stefan Znam
发明人： Alain Cohen , Pradeep K. Singh , Arun Pasupathy , Stefan Znam
IPC分类号： G06F17/50
CPC分类号： G06F17/5009 , H04L67/38
摘要： A sub-system is provided to a discrete event simulator (DES) to expedite simulation execution by first detecting a non-quiescent steady-state condition in the simulated system, and when the steady-state condition is detected, the simulator determines a state, and subsequently simulates the system at a skip-ahead time using this determined state, or a predicted state based on the determined state. Convergence analysis is used to determine whether the system is at, or approaching, a steady-state condition. This convergence skip-ahead process achieves faster analysis by avoiding the computation that would conventionally be required to simulate the system behavior during the time interval that is skipped.
摘要翻译：将子系统提供给离散事件模拟器（DES），以通过首先检测模拟系统中的非静态稳态条件来加速模拟执行，并且当检测到稳态条件时，模拟器确定状态，并且随后使用该确定的状态或基于所确定的状态的预测状态在跳过预测时间模拟系统。收敛分析用于确定系统是处于或接近稳态条件。这种汇聚跳过进程通过避免在跳过的时间间隔期间模拟系统行为通常需要的计算来实现更快的分析。

5. 发明授权

US07139692B2 Flow propagation analysis using iterative signaling 有权
标题翻译：使用迭代信令的流传播分析
公开(公告)号：US07139692B2
公开(公告)日：2006-11-21
申请号：US10325148
申请日：2002-12-20
申请人： Alain Cohen , Pradeep K. Singh , Arun Pasupathy , Stefan Znam , Marius Popa
发明人： Alain Cohen , Pradeep K. Singh , Arun Pasupathy , Stefan Znam , Marius Popa
IPC分类号： G06F9/44
CPC分类号： H04L41/145
摘要： A method and system for flow propagation analysis uses ‘tracers’ that are iteratively propagated through a simulated network between source and destination elements. These tracers are structured to contain traffic flow information from source to destination, and to reflect changes as the flow is affected by each element along the path from source to destination. The resultant flow information at the destination corresponds to the effective throughput from the source to the destination, and the flow information at the output of each intermediate element in the network corresponds to the potentially achievable throughput through that element for the given source-to-destination flow.
摘要翻译：用于流传播分析的方法和系统使用通过源和目标元素之间的模拟网络迭代地传播的“示踪物”。这些跟踪器被构造成包含从源到目的地的流量信息，并且当流被源从源到目的地的路径的每个元素影响时反映改变。目的地的结果流信息对应于从源到目的地的有效吞吐量，并且网络中的每个中间元素的输出处的流信息对应于通过该元素对于给定源到目的地的潜在可实现的吞吐量流。

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