Patent ID: 8355341

Claim:
A delay time measurement apparatus comprising: a storage to store route information which indicates a connection route between a server and a terminal apparatus connected to the server via a plurality of relay nodes; and a central processing unit to execute a process including: determining a core node among the relay nodes on a basis of the route information, the core node being connected to the terminal apparatus via an end node, the end node being the relay node next to the terminal apparatus, acquiring a first packet and a second packet flowing between the server and the terminal apparatus, the second packet being transmitted on a basis of the first packet, calculating a first delay time on a basis of the first packet and the second packet, the first delay time relating to packet transmission between the server and the terminal apparatus, transmitting a third packet to the core node, receiving a response to the third packet from the core node, calculating a second delay time on a basis of the third packet and the response, the second delay time being a delay time of the core node, and calculating a third delay time on a basis of the first delay time and the second delay time, the third delay time being a delay time of the end node.