MEMORY MANAGEMENT DEVICE

PROBLEM TO BE SOLVED: To provide a memory management device capable of reducing the overhead of an OS when a working memory is highly loaded. SOLUTION: The memory management device comprises a program management table 115 that manages management information showing whether each program is used as a transient program that can be saved in an auxiliary memory unit, or it is used as a resident program that can not be saved in an auxiliary memory unit; a resident memory retaining means 130 that stores a program used as a resident program based on the management information in the resident program storage area of a main memory, a transient memory retaining means 140 that stores a program used as a transient program based on the management information in a transient program storage area of the main memory; a transient memory management table 180 that manages the storage area of the transient program, and means 185 and 190 that execute a paging treatment or a swapping treatment to the storage area of the transient program managed by the transient memory management table. COPYRIGHT: (C)2005,JPO&NCIPI