Signature-Based Latency Extraction Systems And Related Methods For Network Packet Communications

摘要

Signature-based latency extraction systems and related methods are disclosed for network packet communications. Disclosed embodiments generate packet signatures (e.g., hash values) for packets received with respect to points within a network packet communication system. For each received packet, its packet signature is compared to packet signatures stored for previously received packets. If no match is found, the packet signature and a timestamp associated with the newly received packet are stored within one or more packet data tables. If a match is found, then the difference between the timestamp associated with the newly received packet and a timestamp stored with the matching packet signature are used to determine a latency value. The latency values can then be used to determine a variety of latency-related parameters for the network infrastructure being measured, and classification information can also be used to generate latency-related histograms. A variety of embodiments can be implemented.

主权项

1. A method to measure network packet latency, comprising:
receiving packets at a first input port associated with a first point within a network packet communication system; receiving packets at a second input port associated with a second point within the network packet communication system; and for each received packet:
generating a packet signature for the packet;comparing the packet signature to packet signatures stored in a signature table;if a signature match is not found, storing the packet signature within the signature table along with a timestamp associated with the received packet; andif a signature match is found, determining a latency value for the received packet based upon a timestamp associated with the received packet and a timestamp associated with the matching packet signature within the signature table.