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hyperv: add host sub-collector for CPU allocation ratio (#2493)

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Co-authored-by: EisenbergD <dominik.eisenberg@beiersdorf.com>
Signed-off-by: EisenbergD <dominik.eisenberg@beiersdorf.com>
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Dominik Eisenberg
2026-10-05 22:51:26 +02:00
committed by GitHub
co-authored by EisenbergD
parent 134588063e
commit c1c5ccc405
4 changed files with 291 additions and 1 deletions
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docs/collector.hyperv.md
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@@ -12,7 +12,7 @@ The hyperv collector exposes metrics about the Hyper-V hypervisor
### `--collectors.hyperv.enabled`
Comma-separated list of collectors to use, for example:
`--collectors.hyperv.enabled=dynamic_memory_balancer,dynamic_memory_vm,hypervisor_logical_processor,hypervisor_root_partition,hypervisor_root_virtual_processor,hypervisor_virtual_processor,legacy_network_adapter,virtual_machine_health_summary,virtual_machine_vid_partition,virtual_network_adapter,virtual_storage_device,virtual_switch`.
`--collectors.hyperv.enabled=dynamic_memory_balancer,dynamic_memory_vm,host,hypervisor_logical_processor,hypervisor_root_partition,hypervisor_root_virtual_processor,hypervisor_virtual_processor,legacy_network_adapter,virtual_machine_health_summary,virtual_machine_vid_partition,virtual_network_adapter,virtual_storage_device,virtual_switch`.
Matching is case-sensitive.
## Metrics
@@ -98,6 +98,28 @@ Some metrics explained: https://learn.microsoft.com/en-us/archive/blogs/chrisavi
| `windows_hyperv_dynamic_memory_vm_physical` | Represents the current amount of memory in the VM. | gauge | `vm` |
| `windows_hyperv_dynamic_memory_vm_removed_bytes_total` | Represents the cumulative amount of memory removed from the VM. | counter | `vm` |
### Hyper-V Host
Metrics about the host's CPU allocation. Processor counts per virtual machine are
read from the Host Compute Service API; the logical processor count comes from the
`Hyper-V Hypervisor Logical Processor` performance counter object.
| Metric Name | Description | Type | Labels |
|-------------------------------------------------|------------------------------------------------------------------------|-------|--------------------|
| `windows_hyperv_host_logical_processor_count` | Number of logical processors on the host | gauge | None |
| `windows_hyperv_vm_processor_count` | Number of virtual processors assigned to the VM | gauge | `vm_id`, `vm` |
| `windows_hyperv_total_vm_processor_count` | Total number of virtual processors assigned to all VMs | gauge | None |
The CPU allocation ratio can be computed in PromQL. Virtual cores per **logical** host core:
```
windows_hyperv_total_vm_processor_count / windows_hyperv_host_logical_processor_count
```
Where hyper-threading (SMT) is enabled, the host reports two logical cores per physical core.
Multiply by the number of threads per core to get the ratio per **physical** core.
### Hyper-V Hypervisor Logical Processor
| Name | Description | Type | Labels |