IMPROVING SYSTEM PERFORMANCE IN A DATA NETWORK THROUGH QUEUE MANAGEMENT BASED ON INGRESS RATE MONITORING

摘要

A method optimizes performance in a data network including a plurality of ingress ports and output queues. Ingress rates of a plurality of flows are monitored, where each flow includes a sequence of packets passing from an ingress port to an output queue and each flow has a profile related to flow characteristics. Each packet is marked with a marking based on criteria including the ingress flow rate and the flow profile. A drop probability of each packet is adjusted at an output queue according to a value of a drop function taken as a function of a queue size. The drop function is selected according to the marking on the packet. The drop functions are zero for queue sizes less than a lower threshold range and positive for queue sizes greater than the lower threshold range. By selecting drop functions according to ingress flow rate measurements and flow profiles, the data network can be optimized for overall system performance.