| 摘要 |
PURPOSE:To secure the substantial decentralization of load for an auxiliary memory device by using a means to store a coefficient showing the processing capacity of an auxiliary memory device serving as a secondary memory area of a virtual memory device. CONSTITUTION:The processing capacity coefficients produced from capacities of the access timers and using channels set for auxiliary memory devices 61-64 and stored in the 1st memory means are registered to processing capacity memory lists 501-531 in response to those devices 61-64 respectively. An access frequency counting means 3 counts up for each access of devices 61-64 and records these count values to access frequency recording lists 502-532. A load frequency counting means 41 counts the substantial load frequencies based on the contents of those lists 501-531 and 502-532 and records them to substantial load recording lists 503-533. A comparison means 8 compares the recorded contents of lists 503-533 with each other and selects an auxiliary memory device having the lowest load frequency to perform allocation of pages.
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