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Windows Server CPU Usage
warning

Description CPU Usage is more than 80%
Query 
>>>
	
				
					100 - (avg by (instance) (
				
			
				
					
					
						rate
					
				
			
				
					(
				
			
				
					
				
			
				
					{mode="idle"}[2m])) * 100) > 80
Query Explanation

The rule computes each instance’s average CPU usage by taking the 2‑minute rate of the windows_cpu_time_total{mode="idle"} counter, converting the idle rate to a percentage and subtracting it from 100 %; if this usage exceeds 80 % on any instance, the alert is triggered.

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