Data prefetching method and apparatus, and storage device
US11099997B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2020 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | Jun 26, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7206
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a data prefetching method, a storage device obtains a first sequence stream length and a first access count of a target logical block after execution of a first data access request is completed. When a second data access request is received, the storage device modifies the first sequence stream length to a second sequence stream length and modifies the first access count to a second access count. The storage device further calculates a sequence degree of the target logical block based on the second sequence stream length and the second access count, and performs a data prefetching operation when the sequence degree of the target logical block exceeds a first prefetch threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.