Hyper-V: Performance (Counters)

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Recommended Performance Counter

Hyper-V Hypervisor Logical Processor

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Hyper-V Hypervisor Virtual Processor

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Physical CPU Context Switching

  • What: This measures the rate (number of times per second) each logical CPU changes what virtual processor it is running.
  • Counter: Hyper-V Hypervisor Logical Processor(*)\Context Switches/sec
  • Threshold: (any instance except for "_Total") > 20000, (sustained for > 5min).
  • Why: We use this as a general health & performance indicator for the host & virtual machines. This counter must be used in context with all other activity based counters (CPU, Disk & Network, latency & throughput).
  • What to do if threshold is exceeded:
    • Check VM config (particularly remove / disable any active & busy emulated devices)
    • Check that the VM is using the correct version of the integration components.
    • Check host operating system utilization Root VP CPU usage (host OS utilization) - see the "Hyper-V Hypervisor Root Virtual Processor" counter section for the specifics.
    • Check drivers - particularly network and storage drivers, but other too.
    • Check for significant inconsistency across your hosts - it can indicate significant configuration or load differences.


Memory

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Memory (NUMA)

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Hyper-V Dynamic Memory

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LogicalDisk

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PhysicalDisk

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Cluster Shared Volumes

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10-hyper-v csv.png
(> 1 MB/s) indicates Shared VHDX files or that CSV is in redirected mode.


Network Interface

11-hyper-v network-interface-summary.png 11-hyper-v network-interface.png



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