Identification of low-activity large memory pages
US9330015B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2014 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Oct 14, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/657
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Large pages that may impede memory performance in computer systems are identified. In operation, mappings to selected large pages are temporarily demoted to mappings to small pages and accesses to these small pages are then tracked. For each selected large page, an activity level is determined based on the tracked accesses to the small pages included in the large page. By strategically selecting relatively low activity large pages for decomposition into small pages and subsequent memory reclamation while restoring the mappings to relatively high activity large pages, memory consumption is improved, while limiting performance impact attributable to using small pages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.