Cache system, cache system control method, and information processing apparatus

摘要

To provide a cache system that can dynamically change a cache capacity by memory areas divided into plural. The cache system includes a line counter that counts the number of effective lines for each memory area. The effective line is a cache line in which effective cache data is stored. Cache data to be invalidated at the time of changing the cache capacity is selected based on the number of effective lines counted by the line counter.