Capacity Metrics: CU usage warehouse default semantic model

[cw88]

Hi, 

when analyzing the capacity metrics report “timepoint details,” I noticed that the default semantic model of a warehouse very often appears among the top “interactive operations for time range,” even though no report or user has access to the model.

Does anyone have any idea what this could be?

Thanks!

[cw88 · Accepted solution]

Thanks, removing all tables from the default semantic model seems to stop the cu usage.

@shashiPaul1570_ : Delete from default semantic model is actually not possible in my environment at the moment. I will do that when it is possible

[shashiPaul1570_]

Adding on to above solution provided by @v-menakakota ,  you can also do following in order to avoid/reduce this usage. 

• Delete the default semantic model manually from the workspace if it's not being used for reporting

• Audit workspace access to ensure no background service principals or users are querying it

• Check for refresh triggers, lineage scans, or system metadata operations

• Use Activity Logs or Capacity Metrics to identify what’s driving the usage
  
  
  

Thanks & Regards
Shashi P

[v-menakakota]

Hi @cw88  , 

Thanks for reaching out to the Microsoft fabric community forum. 

Even if no report or user is actively using the default semantic model, it can still appear in the Capacity Metrics report under Interactive Operations.Check the below

Fabric might be running automatic background checks or metadata validations on the model.

If a refresh fails and retries, or if internal operations are happening, these can show up as interactive usage.

Please go through the below documents:

Troubleshooting guide - Monitor and identify capacity usage - Microsoft Fabric | Microsoft Learn

Understand the metrics app timepoint page - Microsoft Fabric | Microsoft Learn

If I misunderstand your needs or you still have problems on it, please feel free to let us know.   

Best Regards, 
Community Support Team