Implementing feedback directed deferral of nonessential DASD operations
US7761658B2 · kind B2 · utility
5Cited by
4References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 23, 2008 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | Jan 6, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0674
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method, apparatus and computer program product are provided for implementing feedback directed deferral on nonessential direct access storage device (DASD) operations. A kernel DASD I/O manager maintains a queue depth count value for a DASD unit and maintains a busy flag that indicates when the queue depth count value is greater than a predefined threshold. The kernel DASD I/O manager defers optional operations responsive to the busy flag being set for the DASD unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.