Cache management method and apparatus for shared, sequentially-accessed, data
US5150472A · kind A · utility
31Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1989 |
| Grant date | Sep 22, 1992 |
| Priority date | — |
| Expiry date | Oct 20, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/6026
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Page management mechanisms provide candidates for page stealing and prefetching from a main storage data cache of shared data when the jobs sharing the data are accessing it in a sequential manner. Pages are stolen behind the first reader in the cache, and thereafter at locations least likely to be soon re-referenced by trailing readers. A "clustering" of readers may be promoted to reduce I/O contention. Prefetching is carried out so that the pages most likely to be soon referenced by one of the readers are brought into the cache.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.