{
  "schemaVersion": 1,
  "generatedAt": "2026-07-21T21:22:59.466Z",
  "environment": {
    "node": "v26.5.0",
    "platform": "darwin",
    "arch": "arm64"
  },
  "fixture": {
    "hashes": 10001,
    "bytesPerFile": 4096,
    "uploadConcurrency": 2
  },
  "note": "Loopback mock includes every dedup, by-hash and content request. Hashing is excluded. Backend SQL is unmodeled: current rejects before ownership lookup while candidate would execute two accepted queries, so candidate wall time is optimistic.",
  "cases": [
    {
      "hitPercent": 0,
      "current": {
        "wallSamplesMs": [
          13455.567,
          7274.844,
          11384.656
        ],
        "wallMedianMs": 11384.656,
        "peakHeapDeltaBytesMedian": 26577840,
        "peakRssDeltaBytesMedian": 1376256,
        "protocol": {
          "ownedCount": 0,
          "hitPercent": 0,
          "dedupAccepted": 0,
          "dedupRejected": 1,
          "dedupRequestBytes": 670079,
          "dedupResponseBytes": 27,
          "uploadRequests": 10001,
          "uploadContentBytes": 40964096,
          "byHashRequests": 0,
          "byHashRequestBytes": 0
        }
      },
      "candidate": {
        "wallSamplesMs": [
          12545.523,
          9374.644,
          14373.866
        ],
        "wallMedianMs": 12545.523,
        "peakHeapDeltaBytesMedian": 27057808,
        "peakRssDeltaBytesMedian": 2408448,
        "protocol": {
          "ownedCount": 0,
          "hitPercent": 0,
          "dedupAccepted": 2,
          "dedupRejected": 0,
          "dedupRequestBytes": 670091,
          "dedupResponseBytes": 24,
          "uploadRequests": 10001,
          "uploadContentBytes": 40964096,
          "byHashRequests": 0,
          "byHashRequestBytes": 0
        }
      },
      "wallSpeedup": 0.907,
      "uploadByteReductionPercent": 0
    },
    {
      "hitPercent": 50,
      "current": {
        "wallSamplesMs": [
          8511.511,
          10370.193,
          7271.146
        ],
        "wallMedianMs": 8511.511,
        "peakHeapDeltaBytesMedian": 25917352,
        "peakRssDeltaBytesMedian": 1753088,
        "protocol": {
          "ownedCount": 0,
          "hitPercent": 50,
          "dedupAccepted": 0,
          "dedupRejected": 1,
          "dedupRequestBytes": 670079,
          "dedupResponseBytes": 27,
          "uploadRequests": 10001,
          "uploadContentBytes": 40964096,
          "byHashRequests": 0,
          "byHashRequestBytes": 0
        }
      },
      "candidate": {
        "wallSamplesMs": [
          8095.953,
          10204.387,
          7060.576
        ],
        "wallMedianMs": 8095.953,
        "peakHeapDeltaBytesMedian": 50966480,
        "peakRssDeltaBytesMedian": 29622272,
        "protocol": {
          "ownedCount": 5001,
          "hitPercent": 50,
          "dedupAccepted": 2,
          "dedupRejected": 0,
          "dedupRequestBytes": 670091,
          "dedupResponseBytes": 335089,
          "uploadRequests": 5000,
          "uploadContentBytes": 20480000,
          "byHashRequests": 5001,
          "byHashRequestBytes": 574561
        }
      },
      "wallSpeedup": 1.051,
      "uploadByteReductionPercent": 50.005
    }
  ],
  "decision": "rejected; production reverted because the all-miss case was 10.2% slower with higher heap/RSS, while the 50%-hit case doubled heap and added about 27.9 MiB RSS"
}