PURPOSE: To enable to accurately know the number of instruction executions in a short time, by providing the control unit performing the counting of the counter only when predetermined conditions are satisfied.

CONSTITUTION: Every time when the output of the instruction register 2 is given to the instruction execution unit 3 and one instruction is executed with the set 3 through the execution, the pulse signal representing the end of execution is given to the condition judgement circuit 4. Further, the circuit 4 judges whether the conditions set at the condition set unit 5 are satisfied under the condition of the information processor or not, and the instruction execution pulse signal is outputted from the set 3 is outputted only with satisfaction. The output of the circuit 4 is fed to the instruction execution number of times counter 6 to count the number of pulse signals and to hold the integrating value. Thus, the number of instruction execution times can accurately be known in a short time.