To provide a request mediating method for performing mediation so that a permission ratio becomes optimum in accordance with the frequency of requests from respective request factors when the requests are given from the two request factors.

When the request is given from the factor A and it is not given from the factor B or when the requests are simultaneously given from the factor A and the factor B and the number of times for permitting the request from the factor A is less than X, the request from the factor A is permitted. When the request from the factor A is not given and the request from the factor B is given, or the requests from the factor A and the factor B are simultaneously given and the number of times for permitting the request from the factor A is X or more, the request from the factor B is permitted. When the request from the factor B is permitted, the number of times for permitting the request from the factor A is reset to zero.