Method and apparatus for grouping asynchronous recording operations
US4636946A · kind A · utility
121Cited by
10References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1982 |
| Grant date | Jan 13, 1987 |
| Priority date | — |
| Expiry date | Feb 24, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/312
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The disclosure relates to demotion of data to a backing store (disk storage apparatus--DASD) from a random access cache in a peripheral data storage system. A cache replacement control list, such as a least recently used (LRU) list is scanned in a soon-to-be replaced first portion (portion closest to LRU entry) to identify first data to be demoted. Then the control list is scanned in first and second portions to identify further data to be demoted with the first data as a single group of data. In DASD, such data is all storable in the same cylinder of the DASD.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.