Managing free space in a compressed memory system
US11922016B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2019 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Sep 18, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/401
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a compressed memory management method for a computer system having one or more processors (P1-PN), compressible main memory, secondary memory and an operating system. The compressible main memory has a compressed memory space comprising an active part directly accessible to said one or more processors (P1-PN), as well as an inactive part not directly accessible to said one or more processors (P1-PN) in the form of memory freed up by memory compression. The compressed memory management method comprises maintaining, in an auxiliary memory, a layout of the compressed memory space of the compressible main memory, the layout including size and location of individual memory pages as well as free memory regions in said compressed memory space; triggering the compression of a memory page in the compressible main memory; intercepting a page-in request from said operating system to said secondary memory, using the layout of the compressed memory space maintained by the auxiliary memory to locate, when available, in said auxiliary memory a page requested by the page-in request, and making the located requested page available in the active part of the compressed memory space; and …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.