libvirt: Virt driver pinning guest vCPUs to host pCPUs (partial)
This feature aims to improve the libvirt driver so that it is able to strictly
pin guest vCPUS to host pCPUs. This provides the concept of "dedicated CPU"
guest instances.
Blueprint information
- Status:
- Complete
- Approver:
- John Garbutt
- Priority:
- Low
- Drafter:
- Daniel Berrange
- Direction:
- Approved
- Assignee:
- Daniel Berrange
- Definition:
- Approved
- Series goal:
- Accepted for kilo
- Implementation:
-
Implemented
- Milestone target:
-
2015.1.0
- Started by
- Joe Gordon
- Completed by
- John Garbutt
Related branches
Related bugs
Sprints
Whiteboard
Gerrit topic: https:/
Addressed by: https:/
Virt driver pinning guest vCPUs to host pCPUs
Gerrit topic: https:/
Addressed by: https:/
libvirt: introduce separate class for cpu tune XML config
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libvirt: add support for per-vCPU pinning in guest XML
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libvirt: add helpers for parsing/formatting CPU range specs
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virt: move get_cpuset_ids into nova.virt.hardware
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virt: split CPU spec parsing code out into helper method
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virt: add method for formatting CPU sets to strings
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libvirt: convert cpuset XML handling to use set instead of string
Gerrit topic: https:/
All the above code seems to have merged, a quick read through the spec seems to suggest this is at least partially complete. Please document what proportion of functionality has merged here, and what is left for a future release. --johnthetubaguy 22nd August 2014
Ah, so nothing useful merged here it seemed, so this has missed juno now. Feature Proposal Freeze means this must not land in juno, because it appears like the code is not all currently ready to be reviewed. To be able to merge in kilo, we would first need to merge a kilo spec. More details on the exact process will be available on the ML shortly. --johnthetubaguy 22nd August 2014
Gerrit topic: https:/
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Add hardware CPU pinning types and pinning logic
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Add NUMA support for CPU pinning logic
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Add method for getting the CPU pinning constraint
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Add cpu_pinning column to the compute_node table
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Add cpu_pinning to instance_extra table
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Add InstanceCPUPinning and related objects
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Add cpu_pinning to Instance object.
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libvirt: Add method for getting host cpu_pinning
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Expose numa_topology to the resource tracker
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Stash CPU policy related extra_spec in system_metadata
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Hook CPU pinning checking into claims
(ndipanov 28.10.2014) - the spec is now merged http://
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Make hardware topology extraction hacks more general
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Method for getting NUMA usage from an instance
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Make resource tracker always use Flavor objects
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Make resource tracker track CPU pinning usage
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Make HostManager track CPU pinning usage
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Add the CPUPinningFilter
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Save insance CPU pinning after a successful claim
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API boot process sets CPU pinning for instances
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libvirt: Consider CPU pinning when booting
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objects: Add DictOfBooleansField and ListOfSetsOfInt
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Add NUMACPUPinningCell object
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Add InstanceNUMACPU
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Add pinning to InstanceNUMATop
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Add methods for calculating CPU pinning
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Add method for getting the CPU pinning constraint
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Adds NUMA CPU Pinning object modeling
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Add cpu pinning check to numa_fit_
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Make numa_usage_
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Make libvirt driver expose sibling info in NUMA topology
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Make get_best_
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libvirt: un-cruft _get_guest_
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libvirt: Fix NUMA memnode assignments to host cells
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libvirt: Consider CPU pinning when booting
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Add method for getting the CPU pinning constraint
Seems like everything has merged, are we done now? --johnthetubaguy 17th December 2014
OK, there are patches left to review, moving to kilo-2 --johnthetubaguy 17th December 2014
Gerrit topic: https:/
Addressed by: https:/
Add virt-driver CPU thread pinning
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trivial: Change file permissions for spec
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Add virt-driver CPU thread pinning
Work Items
Dependency tree
* Blueprints in grey have been implemented.
