  Current day processors employ multi-level cache hierarchy with one or two
levels of private caches and a shared last-level cache (LLC). An efficient
cache replacement policy at LLC is essential for reducing the off-chip memory
transfer as well as conflict for memory bandwidth. Cache replacement techniques
for inclusive LLCs may not be efficient for multilevel cache as it can be
shared by enormous applications with varying access behavior, running
simultaneously. One application may dominate another by flooding of cache
requests and evicting the useful data of the other application. From the
performance point of view, an exclusive LLC make the replacement policies more
demanding, as compared to an inclusive LLC. This paper analyzes some of the
existing replacement techniques on the LLC with their performance assessment.
