How to find out the list of dashboards triggering more than 5 searches

[orca]

I would like to find out dashboards which are not optimized and each panel is triggering the independent search and consuming all resources. 

Is there a splunk search to identify the dashboard so that I can educate the users to use post process searches and optimize the dashboard and resource consumptions.

[richgalloway]

See if this helps.

index=_audit savedsearch_name=search* 
| rex field=savedsearch_name "search(?<Count>\d+)" 
| where Count > 5 
| rex field=provenance "Dashboard:(?<dashboard>.*)" 
| stats max(Count) by dashboard