Reducing copy operations for a virtual machine migration
US10768965B1 · kind B1 · utility
6Cited by
10References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 2018 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | May 2, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/683
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods are provided to reduce the number of redundant copy operations performed as part of a live migration of a virtual machine executing a guest. A hypervisor can queue the copy operations in a processing engine. While pre-copying for the live migration of the VM, the guest may continue to write to the pages. In one embodiment, the processing engine may clear a dirty page just before performing the copy operation of the modified page to a target device, thus extending the window of time to capture any future writes to that page.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.