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vm,metrics: note about behaviour across hypervisors #413

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sureshanaparti merged 2 commits into from
Jul 19, 2024
Merged

vm,metrics: note about behaviour across hypervisors #413

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vm,metrics: note about behaviour across hypervisors
shwstppr Jul 16, 2024
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add statement
shwstppr Jul 19, 2024
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11 changes: 11 additions & 0 deletions source/adminguide/virtual_machines.rst
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Expand Up @@ -1505,6 +1505,17 @@ Instance disk statistics are shown in the Metrics tab in an individual volume vi
|vm-disk-metrics-ui.png|



.. note::
The metrics or statistics for VMs and VM disks in CloudStack depend on the
hypervisor plugin used for each hypervisor. The behavior can vary across
different hypervisors. For instance, with KVM, metrics are real-time
statistics provided by libvirt. In contrast, with VMware, the metrics are
averaged data based on the global configuration parameter
`vmware.stats.time.window` and a lower value for the configuration may help
observe statistics closer to the real-time values.


.. |vm-lifecycle.png| image:: /_static/images/vm-lifecycle.png
:alt: Instance State Model
.. |vm-schedule-tab.png| image:: /_static/images/vm-schedule-tab.png
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