Performance of a cache by detecting cache lines that have...

Details Performance of a cache by detecting cache lines that have... Performance of a cache by detecting cache lines that have...

2008-05-27

2008-05-27

Elmore, Reba I (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S144000, C711S221000

Reexamination Certificate

active

07380065

ABSTRACT:
A method and system for improving the performance of a cache. The cache may include an array of tag entries where each tag entry includes an additional bit (“reused bit”) used to indicate whether its associated cache line has been reused, i.e., has been requested or referenced by the processor. By tracking whether a cache line has been reused, data (cache line) that may not be reused may be replaced with the new incoming cache line prior to replacing data (cache line) that may be reused. By replacing data in the cache memory that might not be reused prior to replacing data that might be reused, the cache hit may be improved thereby improving performance.

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“Cache Reuse Bit,”IBM Technical Disclosure Bulletin, vol. 30, No. 6, Nov. 1987, pp. 16-17.

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