{
  "schemaVersion": 1,
  "generatedAt": "2026-07-21T20:30:26.794Z",
  "decision": "evidence_only_superseded_by_focused_gate; exact output and all medians improved, but the one-file p95 was noisy and regressed, so acceptance relies on the later 41-sample focused gate",
  "environment": {
    "node": "v26.5.0",
    "platform": "darwin",
    "release": "25.5.0",
    "arch": "arm64",
    "cpu": "Apple M4 Pro",
    "logicalCpus": 14,
    "gcExposed": true
  },
  "config": {
    "suite": "progress",
    "warmup": 5,
    "samples": 25,
    "queueCounts": [
      64,
      256,
      1024,
      10000,
      50000
    ],
    "progressCases": [
      {
        "items": 1,
        "updates": 100
      },
      {
        "items": 10,
        "updates": 500
      },
      {
        "items": 100,
        "updates": 5000
      }
    ],
    "hashCounts": [
      1000,
      10000,
      10001,
      25000
    ],
    "dedupBatchSize": 10000,
    "dedupConcurrency": 4,
    "serverLatencyMs": 0,
    "modeledFileBytes": 65536
  },
  "notes": {
    "heap": "Median heap delta is indicative only; timing is the primary microbenchmark metric.",
    "dedup": "The current >10k path is faster only because it is rejected and returns no owned hashes."
  },
  "suites": {
    "progress": [
      {
        "items": 1,
        "updates": 100,
        "repetitions": 1000,
        "normalizedMedianUsPerRun": {
          "current": 1.069250000000011,
          "candidate": 0.32845800000006875
        },
        "current": {
          "sampleCount": 25,
          "medianMs": 1.069250000000011,
          "p95Ms": 2.1355839999999944,
          "minMs": 0.47479199999997945,
          "maxMs": 2.813957999999957,
          "medianHeapDeltaBytes": 1768864,
          "medianRssDeltaBytes": 0
        },
        "candidate": {
          "sampleCount": 25,
          "medianMs": 0.32845800000006875,
          "p95Ms": 11.240291999999954,
          "minMs": 0.2692909999999529,
          "maxMs": 35.88008300000001,
          "medianHeapDeltaBytes": 168848,
          "medianRssDeltaBytes": 0
        },
        "speedup": 3.255362938335456,
        "representative": {
          "current": {
            "checksum": 8562000,
            "lastPercent": 22,
            "finalSum": 215.8203125
          },
          "candidate": {
            "checksum": 8562000,
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          }
        }
      },
      {
        "items": 10,
        "updates": 500,
        "repetitions": 200,
        "normalizedMedianUsPerRun": {
          "current": 17.718959999999697,
          "candidate": 3.242289999999457
        },
        "current": {
          "sampleCount": 25,
          "medianMs": 3.5437919999999394,
          "p95Ms": 15.97524999999996,
          "minMs": 1.7652080000000296,
          "maxMs": 239.03012499999977,
          "medianHeapDeltaBytes": 1099512,
          "medianRssDeltaBytes": 0
        },
        "candidate": {
          "sampleCount": 25,
          "medianMs": 0.6484579999998914,
          "p95Ms": 3.759457999999995,
          "minMs": 0.22216699999989942,
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          "medianHeapDeltaBytes": 77648,
          "medianRssDeltaBytes": 0
        },
        "speedup": 5.464952240546856,
        "representative": {
          "current": {
            "checksum": 27254400,
            "lastPercent": 44,
            "finalSum": 871.2890625
          },
          "candidate": {
            "checksum": 27254400,
            "lastPercent": 44,
            "finalSum": 871.2890625
          }
        }
      },
      {
        "items": 100,
        "updates": 5000,
        "repetitions": 20,
        "normalizedMedianUsPerRun": {
          "current": 6256.843750000007,
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        },
        "current": {
          "sampleCount": 25,
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          "p95Ms": 234.41116699999975,
          "minMs": 33.03545800000029,
          "maxMs": 246.10770900000034,
          "medianHeapDeltaBytes": 1590568,
          "medianRssDeltaBytes": 0
        },
        "candidate": {
          "sampleCount": 25,
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          "medianHeapDeltaBytes": 51728,
          "medianRssDeltaBytes": 0
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        "speedup": 469.48452583286786,
        "representative": {
          "current": {
            "checksum": 240082660,
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          },
          "candidate": {
            "checksum": 240082660,
            "lastPercent": 51,
            "finalSum": 1024.8828125
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        }
      }
    ]
  },
  "blackhole": 0
}