{
  "date": "2026-09-18",
  "status": "Measured local observations, not a global ranking",
  "workload": {
    "vectors": 99488,
    "dimensions": 768,
    "distinct_queries": 512,
    "k": 10,
    "clients": 8,
    "distance": "squared L2 over normalized float32 vectors",
    "ground_truth": "independent exhaustive float64",
    "hardware": "AMD Ryzen 9 9950X3D workstation; WSL2 exposes 16 logical CPUs",
    "server_memory_cap": "2 GiB; smaller serving caps applied after construction",
    "query_passes": 5,
    "graphs_per_engine": 1
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      "Qdrant": {
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    {
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      "minimum_recall": 0.999,
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      "Qdrant": {
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        "p99_ms_median": 6.059496
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    },
    {
      "minimum_recall": 0.9998,
      "8DB": {
        "ef": 800,
        "recall_min": 1.0,
        "qps_median": 1100.0911276492775,
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        "p99_ms_median": 10.970505
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      "Qdrant": {
        "ef": 800,
        "recall_min": 0.9998046875,
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        "p99_ms_median": 9.050667
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  ],
  "binary_sha256": "ee92a27ae91b40aba0e9ae0d25c9ee70d0dafa40a358f257757e8aa023ad0cec",
  "qdrant_version": "1.19.1",
  "qdrant_image": "qdrant/qdrant@sha256:12364fe851b9f17356fc88189fc06d1b521262e04659ec7345975b00c9246a10",
  "dataset_source": "https://huggingface.co/datasets/ashraq/cohere-wiki-embedding-100k",
  "dataset_revision": "cba9b3b747020b41123bc042fcca6f518c5aa928",
  "train_sha256": "631757a2b137dd47f9c8a0b4fc30207530b6471dccb80f0dfeb54522f3b5ab70",
  "query_sha256": "d90c7aa2eb2091ebf572360dd0782ad0d20a3f2972160ed710af4bba49eb5fc6",
  "build_seconds": {
    "baseline": 390.08,
    "optimized": 166.089,
    "qdrant_fully_indexed": 18.308,
    "qdrant_upload_ack": 7.268
  },
  "later_build_calibration": {
    "control_seconds": 195.2626,
    "optional_seconds": 97.7544,
    "control_recall_at_ef100": 0.99765625,
    "optional_recall_at_ef100": 0.9966796875,
    "builds_each": 2,
    "same_seed_and_order": true
  },
  "sift_component": {
    "prior": {
      "qps": 3612,
      "recall": 0.99159,
      "p99_ms": 3.719
    },
    "optimized": {
      "qps": 7404,
      "recall": 0.99725,
      "p99_ms": 1.583
    },
    "hnswlib": {
      "qps": 13348,
      "recall": 0.99545,
      "p99_ms": 1.016
    }
  },
  "limitations": [
    "Shared host; unrelated work active; no matched CPU quotas or affinity.",
    "Native TCP versus prepared Qdrant gRPC.",
    "Qdrant restarted the persisted index; native index is derived and in memory.",
    "No matched durability, authority-aware filtering or complete governed workflow.",
    "Only 512 distinct passage queries; repeated timing does not enlarge quality sample.",
    "Geometric neighbor recall is not application relevance.",
    "Build threading differs; later build calibration is a separate run.",
    "No measured energy or physical wear; no whole-deployment memory superiority.",
    "SIFT component history is a different workload and boundary; controls not freshly interleaved."
  ]
}