Cooperative memory resource management via application-level balloon
US8949295B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2010 |
| Grant date | Feb 3, 2015 |
| Priority date | — |
| Expiry date | Jun 30, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/702
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods, systems, and computer programs for managing memory in a host where virtual machines (VMs) execute are presented. In one embodiment, a method includes an operation for determining which amount of heap memory has been reserved in a Java virtual machine (JVM) that is in excess of the heap memory needed by the JVM. If there is excess heap memory, a Java balloon agent reserves a Java object in the heap memory. Typically, the Java object will be the size of one or more memory pages in the host. Further, the Java balloon agent loads the Java object with a certain value, for example, by zeroing out the page of memory. When a virtual machine monitor (VMM) in the host detects that a machine physical memory page associated with the Java object has the first value, then the VMM frees the machine physical memory page to make the memory available to other VMs or to other processes executing in the host.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.