Libvirt hugepage backed memory support
The memory page size of your system influences the overhead of virtual to physical memory translations, increasing your memory page size would reduce this overhead. HugePages is a feature that makes it possible for the operating system support memory pages larger than the default 4KB, assuming HW support. Hugepage support can deliver a significant improvement in memory access throughput, especially in memory intensive and database workloads.
This feature enables libvirt configure virtual machines to use hugepage backed memory.
This feature can be used Intel DPDK vSwitch and NFV workloads.
Blueprint information
- Status:
- Complete
- Approver:
- None
- Priority:
- Undefined
- Drafter:
- James Chapman
- Direction:
- Needs approval
- Assignee:
- James Chapman
- Definition:
- Superseded
- Series goal:
- None
- Implementation:
-
Unknown
- Milestone target:
- None
- Started by
- Completed by
- James Chapman
Related branches
Related bugs
Sprints
Whiteboard
This seems to duplicate this proposal that was discussed in the Libvirt driver roadmap session?:
https:/
https:/
--sgordon
This blueprint is proposed as one of four independent patches to enable nfv workloads via the Intel® DPDK accelerated Open vSwitch.
Differing from the referenced blueprint tenants are not required to request hugepage support explicitly via a flavour. The intention of this blueprint is that it enables huge page support transparently.
Hugepage support must be enabled at the node level both in the hypervisor and os, as such the availability zone mechanism could be used to distinguish between nodes, based on hugepage support.
--sean-k-mooney
No spec submition linked here, please submit a spec, or link to the spec review, and consider this for juno-2, un-targeting blueprint from juno-1 --johnthetubaguy (28th May 2014)
You should not set a milestone target unless the blueprint has been properly prioritized by the project drivers.
Gerrit topic: https:/
Addressed by: https:/
Title: libvirt-hugepage
Addressed by: https:/
Implements: blueprint libvirt-hugepage
Gerrit topic: https:/
Gerrit topic: https:/
Addressed by: https:/
Support libvirt hugepage memory in nova.
