PERFORMANCE EVALUATION SUPPORT PROGRAM, PERFORMANCE EVALUATION SUPPORT DEVICE, AND PERFORMANCE EVALUATION SUPPORT METHOD

摘要

PROBLEM TO BE SOLVED: To improve the accuracy in prediction of response performance of a storage device.SOLUTION: Redundancy system information of a storage device, the number of memories in the storage device, a use rate of memory areas being used, a ratio of readout requests to requests, an average data amount of data read in response to readout requests, an input/output index representing the number of requests per unit time, a constant representing a processing time for a write request in the storage device, and a memory constant determined by the type of the memories are used to calculate a redundancy coefficient representing a feature quantity for a data redundancy system of the storage device, a memory coefficient representing a feature quantity for performance of memories, a phase change multiplicity of a boundary between low load and high load, and a readout request index representing the number of readout requests per unit time, and the redundancy coefficient, the memory coefficient, the phase change multiplicity, and readout input/output indexes issued per unit time are used to calculate a predictive value of an average response time for readout requests.