Adaptive disk layout techniques and tools
US7260693B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 30, 2004 |
| Grant date | Aug 21, 2007 |
| Priority date | — |
| Expiry date | Dec 24, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/08
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one aspect, in response to each of plural page faults, a copy of a requested virtual memory page is written to a sorted set of pages in the read order of the sorted pages. A copy of a modified or new data page also can be written to the sorted set. Sorting can be limited to certain kinds of pages (e.g., data pages). Temporary data pages can be deleted from a sorted set to improve efficiency. If a previously sorted page is requested, writing the page back to the sorted set can be omitted. A sorted set of pages also can be sorted based on retirement order. In another aspect, copies of pages that are accessed or not accessed in memory within certain time windows are written in a sorted order based on phase groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.