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Current basic block management consumes a significant amount of memory,
which leads to unnecessary waste due to frequent map allocation and
release. Adaptive Replacement Cache (ARC) is a page replacement
algorithm with better performance than least recently used (LRU). After
the translated blocks are handled by ARC, better memory usage and hit
rates can be achieved by keeping track of frequently used and recently
used pages, as well as a recent eviction history for both.
According to the cache information obtained while running CoreMark, the
cache hit rate of ARC can reach over 99%.
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