{
  "kind": "synthetic-scheduler-input",
  "assumptions": "One virtual device. Prefill token costs 1ms; one decode batch costs 1ms independent of active count. Each dispatch costs 0.25ms. Prefill completion emits first token. FIFO admission, no KV capacity, communication or actual GPU kernels.",
  "traces": {
    "mixed": [
      {"id": "A", "arrivalMs": 0, "inputTokens": 2, "outputTokens": 12},
      {"id": "L", "arrivalMs": 2, "inputTokens": 12, "outputTokens": 2},
      {"id": "S", "arrivalMs": 4, "inputTokens": 1, "outputTokens": 4}
    ],
    "prefill-only": [
      {"id": "L", "arrivalMs": 0, "inputTokens": 12, "outputTokens": 1}
    ],
    "unseen": [
      {"id": "U1", "arrivalMs": 0, "inputTokens": 8, "outputTokens": 8},
      {"id": "U2", "arrivalMs": 1, "inputTokens": 1, "outputTokens": 12},
      {"id": "U3", "arrivalMs": 3, "inputTokens": 6, "outputTokens": 3},
      {"id": "U4", "arrivalMs": 10, "inputTokens": 1, "outputTokens": 1}
    ]
  }
}