{
    "scenario": "contention",
    "scope": "Disposable PostgreSQL 16 component qualification; not production capacity or RTO",
    "callers": 32,
    "instances": 4,
    "pool_limit": 8,
    "initial_requests": 4096,
    "initial_accepted": 2048,
    "followup_accepted": 512,
    "elapsed_ms": 21196,
    "reserve_p95_ms": 133,
    "reserve_p99_ms": 210,
    "reserve_max_ms": 474,
    "invariant_violations": 0
}