Priority based bus arbiters avoiding deadlock and starvation on buses that support retrying of transactions
US8370552B2 · kind B2 · utility
12Cited by
77References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2008 |
| Grant date | Feb 5, 2013 |
| Priority date | — |
| Expiry date | Oct 14, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/366
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A scheduler provided according to an aspect of the present invention provides higher priority for data units in a low priority queue upon occurrence of a starvation condition, and to packets in a high priority queue otherwise. The scheduler permits retransmission of a data unit in the lower priority queue when in the starvation condition, but clears the starvation condition when the data unit is retransmitted a pre-specified number of times. As a result, the data units in the higher priority queue would continue to be processed, thereby avoiding a deadlock at least in certain situations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.