System and method for dynamically assigning I/O priority
US7366800B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 9, 2003 |
| Grant date | Apr 29, 2008 |
| Priority date | — |
| Expiry date | Sep 29, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/385
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for controlling I/O transfers includes a host system or initiator including an adapter driver layer; and a storage controller. The storage controller includes a priority store and an operation queue. The adapter driver is selectively responsive to a datapath command from an initiator application for setting a default I/O priority for a specified logical unit, for storing the default I/O priority for the logical unit to a priority store of the storage controller, and selectively responsive to a data transfer command from an initiator application for storing the data transfer command to the storage controller. The storage controller is responsive to the datapath command for storing the I/O priority default value for the logical unit to the priority store; and responsive to the data transfer command with respect to the logical unit for queuing the data transfer command for execution based on the I/O priority default value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.