Model
When prefetching pays
A well-sized cache should prefetch less aggressively than a badly sized one.
- Saving
- what a hit on the prefetched entry saves
- Fetch cost
- cost of the speculative fetch
- Eviction cost
- value lost from the entry it displaces
Where it appears
Each mechanism states it in its own names. The general symbol each name stands for is shown with it.
- Caching
What happens when we deliberately keep a second copy of data that no protocol forces to be correct?