| 摘要 |
An information processing system performs a prefetch for predicting data that is likely to be accessed by a central processing unit, reading the predicted data from a main memory, and storing the data in a cache area in advance. The information processing system includes a usage information storage unit that stores therein usage information indicating whether prefetched data has been accessed; and a usage information writing unit that writes the usage information of the prefetched data in the usage information storage unit.
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