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Istio high request latency
warning

Description Istio average requests execution is longer than 100ms.
Query for 1m 
>>>
	
				
					
					
						rate
					
				
			
				
					(
				
			
				
					
				
			
				
					{reporter="destination"}[1m]) / 
				
			
				
					
					
						rate
					
				
			
				
					(
				
			
				
					
				
			
				
					{reporter="destination"}[1m]) > 100
Query Explanation

The rule computes the average request latency for Istio traffic by dividing the per‑second sum of request durations (istio_request_duration_milliseconds_sum) by the per‑second count of requests (istio_request_duration_milliseconds_count) over the last minute, and it fires when this average exceeds 100 ms. In other words, if the observed average latency at the destination reporter is greater than 100 ms during the past minute, the alert triggers.

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