A service has intermittent scheduler latency between goroutines, but a CPU profile shows …

A service has intermittent scheduler latency between goroutines, but a CPU profile shows no dominant function. Which evidence is most suitable next?

1. Collect a bounded execution trace and inspect scheduler events and goroutine timelines.
2. Increase the benchmark duration and infer the scheduler sequence from ns/op.
3. Run `go vet` because static analysis records runtime scheduling events.