Adaptive method for selecting a cache line replacement algorithm in a direct-mapped cache
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United States of America Patent
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Dec 1, 2020
Grant Date -
Dec 14, 2017
app pub date -
Jun 14, 2016
filing date -
Jun 14, 2016
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Abstract
A method of managing a direct-mapped cache is provided. The method includes a direct-mapped cache receiving memory references indexed to a particular cache line, using a first cache line replacement algorithm to select a main memory block as a candidate for storage in the cache line in response to each memory reference, and using a second cache line replacement algorithm to select a main memory block as a candidate for storage in the cache line in response to each memory reference. The method further includes identifying, over a plurality of most recently received memory references, which one of the algorithms has selected a main memory block that matches a next memory reference a greater number of times, and storing a block of main memory in the cache line, wherein the block of main memory stored in the cache line is the main memory block selected by the identified algorithm.
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