1. A computer-readable medium storing a computer software program for causing an information processing device in an information processing system to execute the steps of: executing at least one processing block executed in common when at least two types of commands for controlling said information processing system are respectively executed; storing determination values set for the respective types of said commands, the determination values being used to determine whether log data to be outputted by executing said processing block needs to be outputted; and storing results of determining whether said determination values satisfy a log data output condition set for the processing block when said processing block containing an algorithm for outputting said log data is executed.