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1. 发明授权

US08095649B2 Network delay analysis including parallel delay effects 有权
标题翻译：网络延迟分析包括并行延迟效应
公开(公告)号：US08095649B2
公开(公告)日：2012-01-10
申请号：US12060271
申请日：2008-04-01
申请人： Patrick J Malloy , Alain J Cohen , Steven Niemczyk , Russell Mark Elsner
发明人： Patrick J Malloy , Alain J Cohen , Steven Niemczyk , Russell Mark Elsner
IPC分类号： G06F15/16
CPC分类号： H04L43/0852 , H04L43/045 , H04L69/28
摘要： A multi-functional graphical user interface facilitates the analysis and assessment of application delays, including delays that occur on multiple paths. A trace file of an application's network events is processed to categorize the causes of delays incurred in the propagation and processing of these events. The system identifies the amount of delay (‘component delay’) that can be eliminated by eliminating each of the components of delay individually, as well as the amount of delay (‘parallel delay’) that can be eliminated by eliminating combinations of the delay components. A user interface displays the amount of reduction that can be achieved by eliminating each component delay individually and the amount of reduction that can be achieved by eliminating combinations of the individual component delays. To facilitate the analysis and assessment of these potential reductions, the interface allows the user to ‘drill down’ to view the individual delay components contained in each combination forming the parallel delays. In this manner, the user is provided a view of each of the delay components that would need to be addressed, either individually or in combination, to improve the overall application delay.
摘要翻译：多功能图形用户界面便于分析和评估应用程序延迟，包括在多条路径上发生的延迟。对应用程序的网络事件的跟踪文件进行处理，以分类这些事件的传播和处理所引起的延迟的原因。该系统通过消除单独的延迟的每个分量以及可以通过消除延迟的组合来消除的延迟量（“并行延迟”）来识别可以消除的延迟量（“分量延迟”）组件。用户界面显示通过单独消除每个组件延迟可以实现的减少量以及通过消除单个组件延迟的组合可以实现的减少量。为了便于分析和评估这些潜在的减少，界面允许用户“向下钻取”以查看形成并行延迟的每个组合中包含的各个延迟组件。以这种方式，向用户提供需要单独地或组合地需要寻址的每个延迟组件的视图，以改善整体应用延迟。

2. 发明授权

US07843815B2 Estimation of time-varying latency based on network trace information 有权
标题翻译：基于网络跟踪信息估计时变延迟
公开(公告)号：US07843815B2
公开(公告)日：2010-11-30
申请号：US11752283
申请日：2007-05-22
申请人： Dana Znamova , Patrick J Malloy , John Strohm
发明人： Dana Znamova , Patrick J Malloy , John Strohm
IPC分类号： G01R13/08
CPC分类号： H04J3/0682 , H04L41/00 , H04L41/147 , H04L43/0864
摘要： Time-varying latency is estimated based on the round-trip time between the time of sending a message and the time of receiving an acknowledgement of receipt of the message. The round-trip time relative to a transmitter is modeled as a combination of known, or determinable, delays, plus an unknown latency, plus a processing/acknowledgement delay at the receiver. The estimated time-varying latency is further refined to give more weight to estimates based on fewer unknowns or a lesser magnitude of unknowns, and to impose physical constraints, such as assuring that the estimate does not imply an unrealizable event. TCP-specific constraints and assumptions are also applied to further refine the latency estimates.
摘要翻译：基于在发送消息的时间与接收确认接收到消息的时间之间的往返时间来估计时变等待时间。相对于发射机的往返时间被建模为已知或可确定的延迟的组合，加上未知等待时间，加上接收机处理/确认延迟。估计的时变延迟被进一步改进，以便基于较少的未知数或较小的未知数估计更多的权重，并施加物理约束，例如确保估计不意味着不可实现的事件。 TCP特定的约束和假设也被应用于进一步改进延迟估计。

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