Memory Hierarchy Terms Hit - item found in the upper level of the hierarchy Miss - item not found in upper level of the hierarchy Hit Time - time required to access the desired item in the upper level (includes time to determine if the access is a hit or a miss) Miss Penalty - the additional time required to service the miss Miss Rate - fraction of accesses that are not in that level Block - the amount of information that is retrieved from the next lower level on a miss

Chapter 7: Large and Fast: Exploiting Memory Hierarchy - 8 of 67