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			gemisigo 
			 
			
  
			
			
				Joined: 11 Mar 2010 Posts: 2175
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				  [12.1.279 Pro] - Performance Dashboard | 
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				Is there a way to see what queries the Performance Dashboard runs for the different Key Metrics? For some unknown reason, the diagram for Transactions/sec stops refreshing. I have to restart the dashboard and then it works for a few minutes (seconds?). Unfortunately, that's a rinse-and-repeat kind of process.
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		| Fri Nov 25, 2022 9:36 am | 
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			SysOp 
			Site Admin 
			
  
			
			
				Joined: 26 Nov 2006 Posts: 7992
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				I assume you are asking about SQL Server dashboard. That chart is based on polling values in dm_os_performance_counters, base query is 
 
 
 
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	SELECT ROW_NUMBER() OVER(ORDER BY (cntr_value)  DESC) AS rank,
 
   instance_name AS database_name,
 
   cntr_value
 
FROM   sys.dm_os_performance_counters
 
WHERE object_name = 'SQLServer:Databases'
 
   AND counter_name = 'Transactions/sec'
 
   AND instance_name != '_Total'
 
   AND cntr_value != 0 | 
	 
 
 
 
It fetches 'Transactions/sec' performance counter and shows changes between its latest and previous values
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		| Wed Nov 30, 2022 3:51 pm | 
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			gemisigo 
			 
			
  
			
			
				Joined: 11 Mar 2010 Posts: 2175
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				But why does it stop refreshing? And why don't the others?
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		| Wed Nov 30, 2022 4:24 pm | 
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			SysOp 
			Site Admin 
			
  
			
			
				Joined: 26 Nov 2006 Posts: 7992
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				I'm not sure. Maybe data caching somewhere.
 
 
I'm going to try tracing events to see what's coming back.
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		| Wed Nov 30, 2022 8:32 pm | 
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			SysOp 
			Site Admin 
			
  
			
			
				Joined: 26 Nov 2006 Posts: 7992
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				This issue has been confirmed as a bug. We are going to fix it soon.
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		| Fri Dec 02, 2022 3:56 pm | 
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