PPT Slide
- a buffer in main memory for disk sectors
- locality and locality of reference is what makes it to score hits
- reading ahead and write-back delay
- data delivery from the cache:
- move from cache to user memory
- shared memory and pointers: point do not move
- Replacement strategy (similar to pages)
- LRU (least recently used)
- LFU (least frequently used)
- FBR (frequency-based replacement)
- Hits are not moved to top of queue as they might, pointers are used
- Empirical: misses and hits are a function of the cache size