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METHODS AND APPARATUS FOR INTRA-SET WEAR-LEVELING FOR MEMORIES WITH LIMITED WRITE ENDURANCE
METHODS AND APPARATUS FOR INTRA-SET WEAR-LEVELING FOR MEMORIES WITH LIMITED WRITE ENDURANCE
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机译:具有有限写入耐力的存储器的内部磨损级别的方法和装置
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摘要
Efficient techniques are described for extending the usable lifetime for memories with limited write endurance. A technique for wear-leveling of caches addresses unbalanced write traffic on cache lines which cause heavily written cache lines to fail much fast than other lines in the cache. A counter is incremented for each write operation to a cache array. A line affected by a current write operation which caused the counter to meet a threshold is evicted from the cache rather than writing data to the affected line. A dynamic adjustment of the threshold can be made depending on the operating program. Updates to a current replacement policy pointer are stopped due to the counter meeting the threshold.
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