GitHub user SviridoffA added a comment to the discussion: Dashboard 4.19.2. New 
Used/Allocated resources view ???

Okay, but then I don’t fully understand the meaning of the metrics on the 
dashboard.

> On the Cluster/Zone details page, data are fetched by API listZonesMetrics or 
> listClustersMetrics
> 
> * Used: the real usage of hosts in the zone or cluster. It is consistent with 
> the usage users get on the host (for example, free, htop, uptime)
> * Allocated: the resource used by Running vms, or reserved for vms which are 
> stopped recently (same to Used capacity above) in precentage
> * if the used percentage is much smalled than Allocated percentage, it means 
> you could allocate more resources on the environment. You can increase the 
> over provisioning factor (be careful on MEMORY if you use KVM).

Here, everything is good and clear.

> On the dashboard boarding page, data are fetched by API listCapacity
> 
> * Allocated capacity: the resource allocated to the user vms and system vms, 
> etc
> * Used capacity: the resource used by Running vms, or reserved for vms which 
> are stopped recently

But here, it’s completely unclear why this is needed. Why do we have a "Used" 
metric that is actually "Allocated"? Why not just use the same keys from the 
API listZonesMetrics or listClustersMetrics, as on the Cluster/Zone details 
page, and everything would look correct?



GitHub link: 
https://github.com/apache/cloudstack/discussions/10554#discussioncomment-14508908

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