Deterministic latency characterization and mitigation
US5768544A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Sep 26, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/14
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method is provided of requesting use of a shared resource in a computer system. The method is suited to applications in which the device requesting use of the resource can predict the need for the resource before the need actually arises. A request for use of the resource is characterized by a latency between the request and a subsequent granting of the request. The latency has both a deterministic component and a non-deterministic component. In response to an initialization of the computer system, the deterministic component of the latency is measured. The use of the resource is then requested by the requesting device some predetermined time before the time at which the need for such use arises. The predetermined time corresponds to the deterministic component of the latency. The amount of local buffering required within the device is therefore chosen to accommodate only the random latency component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.