PERFORMANCE ANALYSIS APPARATUS, PERFORMANCE ANALYSIS METHOD AND PERFORMANCE ANALYSIS PROGRAM

PROBLEM TO BE SOLVED: To statistically determine a property that changes dependent on multiplicity, system implementation method or the like, regarding a turnaround time that is system time performance physically sensed by a user. SOLUTION: A measured data processing part 111 of a performance analysis apparatus 110 stores, in time series, measured values (turnaround list 208) of a measured response time (turnaround time) from receipt of request to response by a server 101, and load levels (time-specific load levels 207) of a graduated load evaluation of the server 101. A data analysis part 112 of the performance analysis apparatus 110 extracts a plurality of measured values by the load level from the measured data processing part 111, and calculates a probability density function (statistic data 214) of the response time of the server 101 by the load level from the plurality of extracted measured values on the assumption that the response time of the server 101 forms a Gaussian distribution by the load level. COPYRIGHT: (C)2011,JPO&INPIT