Prefetch tag for eviction promotion
US9971693B2 · kind B2 · utility
2Cited by
8References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 13, 2015 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | May 13, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/126
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Various embodiments provide for a system that prefetches data from a main memory to a cache and then evicts unused data to a lower level cache. The prefetching system will prefetch data from a main memory to a cache, and data that is not immediately useable or is part of a data set which is too large to fit in the cache can be tagged for eviction to a lower level cache, which keeps the data available with a shorter latency than if the data had to be loaded from main memory again. This lowers the cost of prefetching useable data too far ahead and prevents cache trashing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.