ALB Target Group Slow Start Latency Under Concurrency

ALB Target Group Slow Start Latency

Diagnosing latency spikes specifically tied to concurrent requests during the target warm-up phase of an Application Load Balancer target group.

Constraints and Uncertainty

The observed latency is only present under high concurrency, suggesting a ramp-up or resource contention behavior tied to the slow start mechanism, rather than sustained load.

What is the documented latency profile of ALB target group slow start during concurrent target registration?

Does the slow start mechanism interact with underlying EC2 instance CPU credit depletion on T-instances?