| 摘要 |
PURPOSE:To improve the processing performance of the whole data processor and to secure response time for a data processing request by harmonizing an overhead due to the switching of an application program with the response time. CONSTITUTION:The free state of the memory class 3 of a memory 2 which correesponds to processing request data from a terminal 8 is checked by a schedule processing part 13 and when the free state is not found, process waiting data 5 is enqueued at the ending of an application program 4 processed by a queuing processing part 14. When it is found, a check on whether a program 5 is present in the class 3 or not is made; when it is present, a program 4 is started and when not, a swap processing part 9 is accessed. This processing part 9 swaps out the program 4 for the swap area 7 of an external storae device 6 and swaps in a new necessary program 4. Then, the processing part 13 starts and executes a target program 4 to rearrange the number of processed data in an application-program control table 15. |
