An
analysis method for carrying out an analysis for responses of a computer
system including a plurality of servers, includes: obtaining data concerning a CPU utilization ratio of each of the plurality of servers from the computer
system, and storing the data concerning the CPU utilization ratio into a CPU utilization ratio storage; obtaining
processing history data generated in the computer
system, generating data of a request frequency by users of the computer system, and storing the
processing history data into a request
frequency data storage; and estimating an average
delay time in each
server by using the CPU utilization ratio of each
server, which is stored in the CPU utilization ratio storage, and the request frequency stored in the request
frequency data storage, and storing the estimated average
delay time into a
server delay time storage. By carrying out such a
processing, the analysis can be carried out without changing the computer system to be analyzed and any additional cost.