| 摘要 |
PROBLEM TO BE SOLVED: To measure the available band in a packet switching network precisely.SOLUTION: In a kernel, an ACK packet is received from the reception side in response to transmission of a packet by an application. Every time when an ACK packet is received, the amount of reception data arrived at the reception side and stored in the ACK packet is integrated, and a measurement step for measuring until the total number of ACK packets received reaches a predetermined number of packets is performed. When the total number of the ACK packet reaches a predetermined number of packets, a determination is made whether or not the measurement time until reaching the predetermined number of packets is equal to or longer than a predetermined time. If it is shorter than the predetermined time, the number of predetermined packets is increased and the measurement step is repeated. If it is equal to or longer than the predetermined time, an available band is calculated by dividing the cumulative amount of reception data integrated in the measurement step by the measurement period. |
