| 摘要 |
<p>In an information processing system loaded with a CPU (104, 2a, 2b) having cache and a system controller (101, 1) having a copy of a tag (105, 3a, 3b) of the cache (snoop tag) (102, 5a, 5b), and the CPU not issuing replacement information about the cache tag (105, 3a, 3b), the number of WAYs (103, 5a-0 - 5a-4, 5b-0 - 5b-4) of the snoop tags in the system controller is larger than the number of WAYs (106, 3a-0 - 3a-3, 3b-0 - 3b-3) of the cache tags in the CPU to reduce a cache miss rate and suppress the degradation of performance by suppressing excess replacement of the cache tags in the CPU.</p> |
