US Patent 9276831 Determining network latency with limited computing resources

Disclosed are techniques for accurately determining network latency. The techniques include steps for transmitting a latency packet between a network test device and a remote network node. The techniques particularly include steps for recording timestamps upon transmission and receipt of the latency packet by the respective network device and the remote network node. Network latency is determined based on a difference between timestamps of the network device (transmitting and receiving the latency packet) and a difference between the timestamps of the remote network node (transmitting and receiving the latency packet).