System and method for dynamically adjusting read ahead values based upon memory usage
US7318142B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2006 |
| Grant date | Jan 8, 2008 |
| Priority date | — |
| Expiry date | Aug 8, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/023
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for dynamically altering a Virtual Memory Manager (VMM) Sequential-Access Read Ahead settings based upon current system memory conditions is provided. Normal VMM operations are performed using the Sequential-Access Read Ahead values set by the user. When low memory is detected, the system either turns off Sequential-Access Read Ahead operations or decreases the maximum page ahead (maxpgahead) value based upon whether the amount of free space is simply low or has reached a critically low level. The altered VMM Sequential-Access Read Ahead state remains in effect until enough free space is available so that normal VMM Sequential-Access Read Ahead operations can be performed (at which point the altered Sequential-Access Read Ahead values are reset to their original levels).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.