Determining a direct memory access data transfer mode
US9229891B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2014 |
| Grant date | Jan 5, 2016 |
| Priority date | — |
| Expiry date | Jan 13, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/28
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In response to receiving a request for a DMA data transfer, a DMA transfer mode may be determined based on based on the size of the requested DMA data transfer and profile data of an I/O adapter. The profile data for the I/O adapter may include a physical location of the I/O adapter or a number of clients supported by the I/O adapter. The DMA transfer mode may also be determined based on a preference of an application or an I/O device. Moreover, the DMA transfer mode may be determined based on a CPU usage metric being outside of a threshold for the CPU usage metric or on a memory usage metric being outside of a threshold for the memory usage metric.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.