Use PCPU and VCPU resource in single VM
Create VM with dedicated CPU and shared CPU in one instance
Blueprint information
- Status:
- Complete
- Approver:
- Stephen Finucane
- Priority:
- Low
- Drafter:
- huaqiang
- Direction:
- Approved
- Assignee:
- huaqiang
- Definition:
- Approved
- Series goal:
- Accepted for victoria
- Implementation:
-
Implemented
- Milestone target:
-
victoria-2
- Started by
- Eric Fried
- Completed by
- Balazs Gibizer
Related branches
Related bugs
Sprints
Whiteboard
Spec: https:/
[efried 20190725] Today is spec freeze, and this spec is close, but some edits are still needed. Assuming those are completed satisfactorily, there seems to be agreement (pending formal SFE) to accept this proposal with the following caveats:
- There is a hard dependency on blueprint cpu-resources.
- cpu-resources must be code complete and merged/approved (or extremely close) by R-7 (Aug 29).
- The full code for this feature must be at least available for review by that same time (R-7, Aug 29).
- As usual, the code for this feature should be approved by feature freeze (R-5, Sep 12)
If these milestones arrive and conditions are not met, this blueprint will be deferred to U.
Deferring this out of Train since it wasn't approved and we're about 2 weeks from feature freeze. -- mriedem 20190829
Gerrit topic: https:/
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[WIP] To create single NUMA node instance in function '_get_numa_
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[WIP] Assign and track instance pinning cpu through 'cpu_pinning' field
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[WIP] Add a new instance CPU allocation policy: mixed
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[WIP] virt/libvirt: Get host pin cpuset according instance cpu_pinning
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metadata: export the vCPU IDs that are pinning on the host CPUs
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support unbalanced dedicatd CPU distribution on instance NUMA nodes
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Create 'mixed' instance from PCPU and VCPU resources
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[WIP] More tests for validating CPU policy by 'resources:PCPU' and 'resources:VCPU'
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Create 'mixed' instance from PCPU and VCPU resources
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Use PCPU and VCPU in one instance
[efried 20200213] Spec approved
[efried 20200220] Agreed in the Nova meeting to Direction:Approve all Definition:Approved blueprints http://
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objects: Add online migration for legacy NUMA objects
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Refine and introduce correct parameters for test_get_
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scheduler: Introduce 'dedicated' and 'sharing' CPUs for InstanceNUMACell
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Derive 'cpu_pinning_
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Introduce 'MIXED' CPU allocation policy for instance
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Introduce the interface of creating 'MIXED' policy instance through 'PCPU' and 'VCPU'
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libvirt: support to create instance with dedicated and shared CPUs
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Remove 'InstanceNUMACe
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Refactor the code in checking available host CPUs
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[WIP] An alternative way for keeping instance dedicated CPUs
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hardware: Add validation for 'cpu_realtime_mask'
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hardware: Tweak the 'cpu_realtime_mask' handling slightly
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hardware: Update and correct typing information
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libvirt: Add typing information
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tests: Split instance NUMA object tests
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objects: Replace 'cpu_pinning_
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hardware: Don't consider overhead CPUs for unpinned instances
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hardware: Remove handling of pre-Train compute nodes
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hardware: Rework 'get_realtime_
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hardware: Invert order of NUMA topology generation
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hardware: 'numa_fit_
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hardware: Remove '_numa_
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WIP! objects: Add 'CPUAllocationP
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WIP! objects: Add 'InstanceNUMACe
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WIP! hardware: Add support for 'hw:cpu_
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WIP! hardware: Start configuring 'InstanceNUMACe
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tox: Integrate mypy
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Introduce the 'CPUAllocationP
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computer: validate cpu pinning configuration for mixed instance
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Calculate the pinned and unpinned CPU usage for mixed instance
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scheduler: translate the mixed instance resource demanding to placement request
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Enable the support of mixed instance
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Introduce 'pcpuset' field for InstanceNUMACell
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libvirt/
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online data migration for cpuset of dedicated instance
[20200414] we hit feature freeze in Ussuri, so it is deferred to Victoria
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WIP: objects: Add migrate-on-load behavior for legacy NUMA objects
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Use PCPU and VCPU in one instance
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notification: add the pcpuset info to instance numa cell payload
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libvirt: apply mixed instance CPU policy
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scheduler: mixed instance CPU resource translating
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flavor: Enable 'hw:cpu_
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compute: bump nova-compute service version for mixed instance
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hardware: create 'mixed' instance for realtime and shared CPUs
[2020.05.18 gibi]: spec approved for Victoria release.
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release note: add new features introduces by use-pcpu-
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hardware: Allow 'hw:cpu_
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test_hardware: code formating for multiline construct
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doc: Correct typo
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hardware: refactor the code for CPU policy sanity check
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[DNM] bump nova-compute version for mixed instance in API
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test: add some notes and new tests for mixed instance
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libvirt: Remove two-level loop
[2020-07-23 gibi]: the last must-have patch has been merged in Victoria so I'm marking this as implemented. Requesting PCPU + VCPU via 'resources:' extra specs, has been deferred since it's (a) low priority and (b) interferes with the NUMA in placement work
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functional: Add tests for mixed CPU policy
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objects: Fix issue in exception type
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objects: Add 'InstanceNUMACe
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Work Items
Dependency tree
* Blueprints in grey have been implemented.
