Evaluation of Enhanced Replacement Scheme (ERS) on Simplescalar Simulation Tool

Computing machines are getting superior by the day, especially, in terms of their processor efficiencies and speeds. This enhanced capability of the processors needs to be matched by an appropriate betterment of memory performance, which can be brought about by improving the hit ratio (hit ratio is the total number of cache hits divided by the total number of cache lookups) of cache memory. This paper focuses on enhancing the hit ratio by consolidation of two popular policies for cache replacement which are Least Recently Used (LRU) and Least Frequently Used (LFU). We have implemented this new policy in Simplescalar [4] simulation tool to show its effectiveness.