The reuse cache
Jorge Albericio, Pablo Ibáñez, Víctor Viñals, José María Llabería · 2013
Over recent years, a growing body of research has shown that a considerable portion of the shared last-level cache (SLLC) is dead, meaning that the corresponding cache lines are stored but they will not receive any further hits before being replaced. Conversely, most hits observed by the SLLC come from a small subset of already reused lines.