{
  "diagnostic": "actual-gateway-phase-timeline-not-performance-comparison",
  "measured_responses": 600,
  "limitations": [
    "Diagnostic instrumentation and headers add overhead; not a production latency benchmark.",
    "total_us is dispatch scope: excludes HTTP body ingress, final diagnostic-header serialization and network delivery.",
    "search.backend_join includes local response handling as well as overlapping backend RPCs.",
    "Per-profile resource snapshots include untimed worker connection primers.",
    "Count selectivity follows recorded start range; compare it explicitly before interpreting other experiments.",
    "qdrant.send_headers includes pool/socket wait, backend execution and scheduling; receive_body is remaining response delivery.",
    "response.json_encode covers es_ok serialization only; response Value construction is inside search.after_join.",
    "Phase durations are wall intervals, not CPU cost; preserve per-request relationships instead of summing categories.",
    "Intervals overlap; do not sum backend durations or subtract independently measured percentiles.",
    "search.after_join includes fallback work on other request shapes; here the ordered fast path is required."
  ],
  "profiles": [
    {
      "profile": "cold",
      "concurrency": 1,
      "requests": 100,
      "dispatch_p50_ms": 1.162,
      "client_p50_ms": 1.4997716061770916,
      "phases": {
        "cache.lookup": {
          "p50_ms": 0.059,
          "p95_ms": 0.078
        },
        "cache.miss": {
          "p50_ms": 0.0,
          "p95_ms": 0.0
        },
        "catalog.parse_read_view": {
          "p50_ms": 0.002,
          "p95_ms": 0.003
        },
        "search.plan": {
          "p50_ms": 0.003,
          "p95_ms": 0.004
        },
        "search.backend_join": {
          "p50_ms": 0.916,
          "p95_ms": 1.011
        },
        "qdrant.count": {
          "p50_ms": 0.915,
          "p95_ms": 1.01
        },
        "qdrant.request_encode": {
          "p50_ms": 0.001,
          "p95_ms": 0.001
        },
        "qdrant.send_headers": {
          "p50_ms": 0.409,
          "p95_ms": 0.954
        },
        "qdrant.scroll": {
          "p50_ms": 0.399,
          "p95_ms": 0.483
        },
        "qdrant.ordered": {
          "p50_ms": 0.396,
          "p95_ms": 0.476
        },
        "qdrant.receive_body": {
          "p50_ms": 0.0,
          "p95_ms": 0.001
        },
        "qdrant.response_parse": {
          "p50_ms": 0.0,
          "p95_ms": 0.016
        },
        "search.after_join": {
          "p50_ms": 0.044,
          "p95_ms": 0.05
        },
        "response.json_encode": {
          "p50_ms": 0.013,
          "p95_ms": 0.014
        },
        "cache.collect_body": {
          "p50_ms": 0.0,
          "p95_ms": 0.0
        },
        "cache.envelope_parse": {
          "p50_ms": 0.017,
          "p95_ms": 0.021
        },
        "cache.envelope_encode": {
          "p50_ms": 0.006,
          "p95_ms": 0.008
        },
        "cache.publish": {
          "p50_ms": 0.088,
          "p95_ms": 0.135
        }
      }
    },
    {
      "profile": "warm",
      "concurrency": 1,
      "requests": 100,
      "dispatch_p50_ms": 0.0915,
      "client_p50_ms": 0.3597503527998924,
      "phases": {
        "cache.lookup": {
          "p50_ms": 0.063,
          "p95_ms": 0.09
        },
        "cache.hit_decode": {
          "p50_ms": 0.022,
          "p95_ms": 0.031
        },
        "cache.hit": {
          "p50_ms": 0.0,
          "p95_ms": 0.0
        }
      }
    },
    {
      "profile": "bypass",
      "concurrency": 1,
      "requests": 100,
      "dispatch_p50_ms": 1.018,
      "client_p50_ms": 1.335708424448967,
      "phases": {
        "cache.bypass": {
          "p50_ms": 1.015,
          "p95_ms": 1.101
        },
        "catalog.read_view": {
          "p50_ms": 0.057,
          "p95_ms": 0.073
        },
        "search.plan": {
          "p50_ms": 0.003,
          "p95_ms": 0.004
        },
        "search.backend_join": {
          "p50_ms": 0.905,
          "p95_ms": 0.985
        },
        "qdrant.count": {
          "p50_ms": 0.904,
          "p95_ms": 0.984
        },
        "qdrant.request_encode": {
          "p50_ms": 0.001,
          "p95_ms": 0.001
        },
        "qdrant.send_headers": {
          "p50_ms": 0.4155,
          "p95_ms": 0.948
        },
        "qdrant.scroll": {
          "p50_ms": 0.3985,
          "p95_ms": 0.466
        },
        "qdrant.ordered": {
          "p50_ms": 0.3955,
          "p95_ms": 0.477
        },
        "qdrant.receive_body": {
          "p50_ms": 0.0,
          "p95_ms": 0.001
        },
        "qdrant.response_parse": {
          "p50_ms": 0.0,
          "p95_ms": 0.017
        },
        "search.after_join": {
          "p50_ms": 0.044,
          "p95_ms": 0.049
        },
        "response.json_encode": {
          "p50_ms": 0.013,
          "p95_ms": 0.014
        }
      }
    },
    {
      "profile": "cold",
      "concurrency": 8,
      "requests": 100,
      "dispatch_p50_ms": 2.5125,
      "client_p50_ms": 3.4420210868120193,
      "phases": {
        "cache.lookup": {
          "p50_ms": 0.2225,
          "p95_ms": 0.718
        },
        "cache.miss": {
          "p50_ms": 0.0,
          "p95_ms": 0.0
        },
        "catalog.parse_read_view": {
          "p50_ms": 0.001,
          "p95_ms": 0.009
        },
        "search.plan": {
          "p50_ms": 0.002,
          "p95_ms": 0.012
        },
        "search.backend_join": {
          "p50_ms": 1.7075,
          "p95_ms": 2.705
        },
        "qdrant.count": {
          "p50_ms": 1.694,
          "p95_ms": 2.579
        },
        "qdrant.request_encode": {
          "p50_ms": 0.001,
          "p95_ms": 0.003
        },
        "qdrant.send_headers": {
          "p50_ms": 1.4125,
          "p95_ms": 2.452
        },
        "qdrant.scroll": {
          "p50_ms": 1.3130000000000002,
          "p95_ms": 2.118
        },
        "qdrant.ordered": {
          "p50_ms": 1.327,
          "p95_ms": 2.461
        },
        "qdrant.receive_body": {
          "p50_ms": 0.0,
          "p95_ms": 0.002
        },
        "qdrant.response_parse": {
          "p50_ms": 0.0,
          "p95_ms": 0.029
        },
        "search.after_join": {
          "p50_ms": 0.0395,
          "p95_ms": 0.116
        },
        "response.json_encode": {
          "p50_ms": 0.011,
          "p95_ms": 0.025
        },
        "cache.collect_body": {
          "p50_ms": 0.0,
          "p95_ms": 0.0
        },
        "cache.envelope_parse": {
          "p50_ms": 0.015,
          "p95_ms": 0.032
        },
        "cache.envelope_encode": {
          "p50_ms": 0.005,
          "p95_ms": 0.011
        },
        "cache.publish": {
          "p50_ms": 0.277,
          "p95_ms": 0.682
        }
      }
    },
    {
      "profile": "warm",
      "concurrency": 8,
      "requests": 100,
      "dispatch_p50_ms": 0.2275,
      "client_p50_ms": 1.000312389805913,
      "phases": {
        "cache.lookup": {
          "p50_ms": 0.1965,
          "p95_ms": 0.533
        },
        "cache.hit_decode": {
          "p50_ms": 0.025,
          "p95_ms": 0.068
        },
        "cache.hit": {
          "p50_ms": 0.0,
          "p95_ms": 0.0
        }
      }
    },
    {
      "profile": "bypass",
      "concurrency": 8,
      "requests": 100,
      "dispatch_p50_ms": 2.08,
      "client_p50_ms": 3.1435415148735046,
      "phases": {
        "cache.bypass": {
          "p50_ms": 2.0775,
          "p95_ms": 6.937
        },
        "catalog.read_view": {
          "p50_ms": 0.17,
          "p95_ms": 0.463
        },
        "search.plan": {
          "p50_ms": 0.003,
          "p95_ms": 0.011
        },
        "search.backend_join": {
          "p50_ms": 1.8,
          "p95_ms": 6.857
        },
        "qdrant.count": {
          "p50_ms": 1.7675,
          "p95_ms": 6.714
        },
        "qdrant.request_encode": {
          "p50_ms": 0.001,
          "p95_ms": 0.003
        },
        "qdrant.send_headers": {
          "p50_ms": 1.5354999999999999,
          "p95_ms": 6.185
        },
        "qdrant.scroll": {
          "p50_ms": 1.4220000000000002,
          "p95_ms": 2.306
        },
        "qdrant.ordered": {
          "p50_ms": 1.367,
          "p95_ms": 2.367
        },
        "qdrant.receive_body": {
          "p50_ms": 0.0,
          "p95_ms": 0.002
        },
        "qdrant.response_parse": {
          "p50_ms": 0.0,
          "p95_ms": 0.019
        },
        "search.after_join": {
          "p50_ms": 0.039,
          "p95_ms": 0.102
        },
        "response.json_encode": {
          "p50_ms": 0.011,
          "p95_ms": 0.024
        }
      }
    }
  ]
}