Resource assigning management apparatus and resource assigning method

A resource assigning method, wherein,

• a resource assigning management apparatus determines a computer on which an application is to be operated, in a system where each of multiple applications is operated on at least one of multiple computers, and requests to the application are divided to and processed on the computers on which the application is operated,
• a storage device of said resource assigning management apparatus stores,
• a processing capacity value management table which stores, with respect to each of the applications, a processing capacity value expected when the application is operated on the computer, and
• a request throughput management table which stores, with respect to each of the applications, a request throughput on each of the computers which are assigned to the application, and
• an operating device of said resource assigning management apparatus performs,
• an available resource amount calculating step in which a total request throughput in each of the computers that are assigned to the application, the request throughput being stored in said request throughput management table, is subtracted from a total processing capacity value for the application of each of the computers assigned to the application, the processing capacity value being stored in said processing capacity value management table, and thus obtained value is set as a resource amount available from the application for another application, and
• a configuration changing step which changes an allocation of a computer being allocated to a resource-excessive application that has a resource amount calculated by said available resource amount calculating step being larger than a first predetermined value, so that the computer is to be allocated to a resource-lacking application that has a resource amount calculated by said available resource amount calculating step being less than a second predetermined value.