Abstract: The disclosure presents a system, method, and computer readable medium for computing network latencies. Network devices using flow processors create network traffic summary information in the form of flow records. A harvester may gather, process, and analyze flow records to find matching flows. Using matching flows, a harvester computes the latency, either one-way or round-trip, between two devices on the network. This information may be exported or stored on other devices on the network. The teachings of the present disclosure enable wide network coverage through the use of existing network traffic summary records. Further, the present disclosure mitigates network slowdowns associated with monitoring equipment. The present disclosure also reduces or eliminates the need for clock synchronization between devices on the network.

Abstract: The disclosure presents a system, method, and computer readable medium for computing network latencies. Network devices using flow processors create network traffic summary information in the form of flow records. A harvester may gather, process, and analyze flow records to find matching flows. Using matching flows, a harvester computes the latency, either one-way or round-trip, between two devices on the network. This information may be exported or stored on other devices on the network. The teachings of the present disclosure enable wide network coverage through the use of existing network traffic summary records. Further, the present disclosure mitigates network slowdowns associated with monitoring equipment. The present disclosure also reduces or eliminates the need for clock synchronization between devices on the network.

Abstract: A method of adaptive resource allocation in transmitting data is provided. In particular, the method of the present invention is applicable to scheduling bandwidths using a modified and dynamic weighted round robin process. The method includes the steps of allocating a resource to each of a plurality of data transmitting active connections, the plurality of active connections belonging to more than one class of service. Then the method determines a lender class of service for each active connection from which resources may be reallocated to the active connection, and periodically comparing the resource usage of an active connection to an upper threshold and a lower threshold.

Abstract: A method for a service monitor of a computing environment includes monitoring application network transactions and behaviors for the computing environment, the computing environment including client subnets accessing servers, the monitoring independent of client site monitors; decomposing the monitored transactions and behaviors into network, server and application quality components; using the components to identify services, servers and client subnets as associated with a quality issue; and implementing an active investigation on the services, servers and client subnets to gather statistical data to assist root cause analysis independent of a network monitoring interruption; The quality issue might be a performance issue, such as excessive response times, excessive loss rates, or small transfer rates. The quality issue might be an availability issue, such as an unreachable network node or a missing web page.

Abstract: A system is provided for monitoring response-time behavior of arbitrary applications. The system provides packet-level and transaction-level response times. The response time delay is separated into network and server components to identify bottlenecks. The network delay component can be updated using continual innovations. Response time computations are based on the actual application from any desired clients.