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| The Memory Hierarchy Exploits |
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| Locality
of Reference |
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| • | Idea:
small amount of fast memory |
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| • | Keep
frequently used data in the fast |
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| memory |
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| • | LRU
replacement policy |
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| – | Keep
recently used data in cache |
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| – | To
free space, remove Least Recently Used |
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| data |
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