Method of measuring packet loss rate, packet loss rate measuring device and storage medium

A packet loss measuring device, comprising:

• a unit that intermittently captures packets during a session;
• a unit that counts a capture success number indicating a number of the packets captured, in every period of a time for capturing the packets and a capturable number indicating a possible number of the packets to be captured during the period of time without loss;
• a unit that calculates a loss rate indicating a rate of losing the packets, according to the capture success number and the capturable number for every period of time;
• and
• a unit that corrects the loss rate so that the loss rate gets larger as an average of capturable numbers of respective periods of time is smaller.

A computer-readable storage medium storing a program for a computer which controls a measuring device, the program causing the computer to execute an operation, comprising:

• intermittently capturing packets during a session;
• counting a capture success number indicating a number of the packets captured in every period of a time indicated for capturing the packets and a capturable number indicating a possible number of the packets to be captured during a period of time without loss;
• calculating a loss rate indicating a rate of losing packets, according to the capture success number and the capturable number for every period of time;
• and
• correcting the loss rate so that the loss rate gets larger as an average of capturable numbers of respective periods of time is smaller.