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Cache replacement policies
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===== Bimodal RRIP (BRRIP) ===== SRRIP performs well normally, but suffers when the working set is much larger than the cache size and causes [[cache thrashing]]. This is remedied by inserting lines with an RRPV value of maxRRPV most of the time, and inserting lines with an RRPV value of maxRRPV - 1 randomly with a low probability. This causes some lines to "stick" in the cache, and helps prevent thrashing. BRRIP degrades performance, however, on non-thrashing accesses. SRRIP performs best when the working set is smaller than the cache, and BRRIP performs best when the working set is larger than the cache.
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