Method for improving bus utilization using predictive arbitration
US7552268B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 18, 2006 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Apr 11, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4031
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A PCI bridge device includes an arbiter that uses state information comprised of knowledge of the bus protocol and a history of recent transactions to predict the type of transaction a requestor will issue. The prediction is then used as a basis to mask or allow bus requests from the requester. The arbiter does not grant access to devices that will predictably issue transactions that do not result in the transfer of data. This approach can decrease time wasted by devices attempting unsuccessful transactions and can provide a commensurate increase in bus utilization. The overall effect is an increase in average bus bandwidth and a decrease in average data transfer latencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.