A PROCESS SCHEDULING SYSTEM THAT ALLOCATES CPU TIME WITH PRIORITY TO INTERACTIVE TYPE PROCESSES

A process action status monitoring section monitors the cumulative CPU time and the idle time for a plurality of processes being executed on a time-sharing basis; those results are recorded in a process action status table. A process type determination section, based on the said cumulative CPU times, classifies those processes for which the cumulative CPU time is equal to or less than a certain threshold value as interactive type process, and classifies processes for which the cumulative CPU time exceeds the threshold value as non-interactive type processes. A non-interactive type process priority control section controls the priorities of processes judged to be non-interactive type processes by the process type judgement section. An interactive type process priority control section controls the priority of processes judged to be interactive type processes. A process selection section selects the process having the highest priority from among the interactive type processes or the non-interactive type processes. A CPU allocation section allocates the CPU to the process selected by the process selection section.