{
  "description": "Relative-performance snapshot used by the benchmark CI gate. Each entry is Popcorn / STJ source-gen on the same shape. Absolute ns/op is machine-dependent; ratios are stable because both numerator and denominator feel the same runner noise. Update this file only when an intentional perf change lands (optimization or deliberate regression); casual CI failures are the gate working.",
  "thresholdPercent": 25,
  "capturedAt": "2026-04-23",
  "capturedOn": ".NET 10.0.7, Windows 11, local dev box",
  "runner": "SerializationComparisonBenchmarks, SimpleJob (3 warmup + 15 iterations)",
  "ratios": [
    {
      "name": "SimpleModelList_PopcornAll_vs_Stj",
      "numerator": "SimpleModelList_PopcornAll",
      "denominator": "SimpleModelList_Stj_SourceGen",
      "value": 1.492,
      "meaning": "Worst-case overhead cell. Shallow objects in a list — no room for Popcorn's selectivity to pay off, so we carry the include-check loop cost with nothing to skip. Memory-bank calls this ~1.40× historically."
    },
    {
      "name": "ComplexModelList_PopcornAll_vs_Stj",
      "numerator": "ComplexModelList_PopcornAll",
      "denominator": "ComplexModelList_Stj_SourceGen",
      "value": 0.872,
      "meaning": "Headline case. Nested complex data, emit everything. Popcorn's generated converter is faster than raw STJ because its per-property loop is flat + non-allocating vs STJ's metadata walk. Memory-bank calls this 0.87×."
    },
    {
      "name": "ComplexModelList_PopcornDefault_vs_Stj",
      "numerator": "ComplexModelList_PopcornDefault",
      "denominator": "ComplexModelList_Stj_SourceGen",
      "value": 0.111,
      "meaning": "Selectivity win. Same nested shape, emit only [Default]. Popcorn renders ~10% of the STJ time because it skips the excluded properties entirely. Memory-bank calls this 0.10×."
    }
  ]
}