{
  "schemaVersion": "fidc.date-numeric-vm-performance/v1",
  "generatedAt": "2026-09-06T18:08:00+08:00",
  "host": "192.168.31.177",
  "change": {
    "engineCommit": "bc228980afc02cde483b1a6fe69da4048120cbc4",
    "serviceCommit": "bac07c208c652a717d312e332d44f90218cc1247",
    "runnerBinarySha256": "46684dea71273466f8ba0f6351eb6f6adf694393ff23ee278054e3b6b71acbe5",
    "description": "Valid ISO date literals directly compared with trade_date, current_date, date, decision_date or execution_date compile to the numeric bytecode VM as YYYYMMDD keys. All other strings remain on the Rhai path. Numeric VM floating comparisons now match Rhai relative epsilon semantics."
  },
  "correctnessBug": {
    "previousBehavior": "Numeric VM used exact f64 comparisons while Rhai used relative f64::EPSILON comparisons, so an expression could change result depending on whether it compiled to VM or fell back to Rhai.",
    "capturedExample": "11.699999999999998 == 11.7",
    "previousVmResult": false,
    "rhaiAndFixedVmResult": true,
    "operatorsAligned": [
      "==",
      "!=",
      "<",
      "<=",
      ">",
      ">="
    ]
  },
  "request": {
    "sourceRunId": "btr_1788681250851_3170500_1",
    "startDate": "2023-01-03",
    "endDate": "2025-12-31",
    "frequency": "1d",
    "matchingType": "next_bar_open",
    "initialCash": 10000000.0,
    "benchmark": "000852.SH",
    "frozenBundleReused": true
  },
  "baseline": {
    "engineCommit": "840473362d7032b80d551ba5935723ee823dffa1",
    "hotEngineMedianSeconds": 5.049,
    "hotTotalMedianSeconds": 5.796
  },
  "candidate": {
    "coldRun": {
      "runId": "btr_1788688964051_3295756_0",
      "totalSeconds": 21.341,
      "dataSeconds": 7.904,
      "engineSeconds": 12.519,
      "classification": "post-deploy process cold and concurrent host-load observation; retained explicitly and excluded from the hot median"
    },
    "hotRunIds": [
      "btr_1788688990229_3295756_1",
      "btr_1788689001276_3295756_2",
      "btr_1788689030863_3295756_3",
      "btr_1788689059131_3295756_4"
    ],
    "hotEngineSeconds": [
      4.963,
      4.934,
      4.854,
      4.859
    ],
    "hotEngineMedianSeconds": 4.8965,
    "hotTotalSeconds": [
      5.901,
      5.619,
      5.738,
      5.539
    ],
    "hotTotalMedianSeconds": 5.6785,
    "incrementalHotEngineImprovementPercent": 3.0204,
    "incrementalHotTotalImprovementPercent": 2.0273
  },
  "resultParity": {
    "totalReturn": -0.615167693429,
    "tradeCount": 4961,
    "canonicalResultSha256": "f9c26271d4f2096e51429b6106740f600757823789bf6447cd0c524f702f0836",
    "resultStoreSha256": "56042bd25bd4261e41e8237c9f5ead580b782d897baae58c8e4436f331a1d91f",
    "allFiveRunsEqualBaseline": true,
    "returnDelta": 0.0,
    "tradeCountDelta": 0
  },
  "validation": {
    "numericVmTests": "4 passed, 1 ignored",
    "capturedRegressionTest": "platform_helpers_support_generic_rolling_stats_and_normalized_factors",
    "workspaceTests": "423 passed, 6 ignored plus all integration tests passed",
    "invalidDateLiteralFallsBack": true,
    "nonDateStringFallsBack": true,
    "helperDateArgumentPreserved": true,
    "runtimeUser": "boris",
    "serviceHealth": "ok"
  }
}