Less reused filter
Lingxiang Xiang, Tianzhou Chen, Qingsong Shi, Wei Hu · 2009
The L2 cache is commonly managed using LRU policy. For workloads that have a working set larger than L2 cache, LRU behaves poorly, resulting in a great number of less reused lines that are never reused or reused for few times. In this case, the cache performance can be improved through retaining a portion of working set in cache for a period long enough. Previous schemes approach this by bypassing never reused lines. Nevertheless, severely constrained by the number of never reused lines, sometimes they deliver no benefit due to the lack of never reused lines.