Abstract

Transmissions in a data center communications network are monitored at a sending computer, the transmission of data packets being controlled by control messages sent by a receiving computer. The monitor at the sending computer measures the time that a burst of data takes to be transmitted from the sending computer to the receiving computer. Based on feedback received from the receiving computer, the monitor at the sending computer calculates one of more estimated completion times for the transmission. The estimated completion times will approximately match the measured completion time if the network is not the bottleneck for communication. When there is a mismatch between the estimated and measured completion times, this is logged and the information is used to trigger analysis to detect the reason and possible causes for the network under-performing.

IPC Classes  ?

• H04L 43/08 - Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
• H04L 43/0876 - Network utilisation, e.g. volume of load or congestion level
• H04L 43/12 - Network monitoring probes
• H04L 43/16 - Threshold monitoring