PURPOSE: To obtain the performance evaluation method for a control computer system capable of efficiently obtaining the performance of the control computer system in analytic and designing processes concerning the performance evaluation method of the control computer system, which evaluates the control computer system.

CONSTITUTION: The method evaluates the performance of the control computer system by dividing the control computer system into an application part, an operating system part and a hardware part, obtaining the system performance model of the control computer system by an application model, an operating system model and a hardware model, which display the performance tables of the respective parts and obtaining system performance data by executing system simulation through the use of a system performance model.