Abstract: The techniques disclosed herein determine a location independent network delay, via a network monitoring device. Such techniques particularly include determining various delays caused by retransmission in instances of lost data segments and application response time.

Abstract: The techniques disclosed herein determine a location independent network delay, via a network monitoring device. Such techniques particularly include determining various delays caused by retransmission in instances of lost data segments and application response time.

Abstract: Network monitoring method and apparatus determines the zero window event data transfer delay, reporting the amount of data transfer delay caused thereby. Non-data-transfer-delaying zero window events can be separated from those causing actual delay, allowing reporting of actual delay events separate from non-delay causing events.

Abstract: A network round trip time measurement apparatus and method employ request/response timing to determine network round trip time. An initial network round trip value is determined, and subsequent network round trip values are determined for possible better measurement values. Response send time and subsequent next request receipt times are employed to determine network round trip values, as well as response and ack packet times.

Abstract: A method and apparatus is disclosed herein for determining the state of a flow of packets in a network. In one embodiment, the method comprises: monitoring, using a monitoring device, a flow of packets that are part of a connection between two network devices in a network, where the monitoring device is located in the network at one side of the connection; and passively determining a state of the flow while monitoring the flow, including determining at least one state of the flow without receiving data in the flow of packets that specifies the flow is in the at least one state.

Abstract: Data acquisition rates are dynamically adjusted in an APM system, by monitoring data acquisition hardware and reducing the data acquisition rate when a determination is made that the data rate is too high for processing by an APM.

Abstract: Data storage rates are dynamically adjusted in an APM system, by monitoring data storage elements and modulating the data storage when a determination is made that the storage buffer utilization is too high.

Abstract: Network monitoring method and apparatus determines the zero window event data transfer delay, reporting the amount of data transfer delay caused thereby. Non-data-transfer-delaying zero window events can be separated from those causing actual delay, allowing reporting of actual delay events separate from non-delay causing events.