Physically-based page characterization data
US7519781B1 · kind B1 · utility
33Cited by
3References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 19, 2005 |
| Grant date | Apr 14, 2009 |
| Priority date | — |
| Expiry date | Jun 5, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/1009
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Circuits, methods, and apparatus for efficiently storing page characteristics. Page characteristics for memory pages are stored post address translation using addresses for physical locations in memory, for example, in a bit vector. The characteristics may include access or dirty bits, as well as other types of information. These bit vectors can also be stored and accumulated to generate histogram data. Two bit vectors may be included, while a first bit vector is written to, another is used. After data has been written to the first, the bit vectors are flipped, and data is written to the second while the first is used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.