{
  "schemaVersion": "fidc-stock-state-calendar-index-reuse-ab/v1",
  "measuredAt": "2026-09-05T00:02:00+08:00",
  "host": "192.168.31.177",
  "engineCommit": "6d458dbbc6fa3acb1bff0824307281c82170031a",
  "serviceCommit": "9fd5a9e6d5668af57f6942fc3c4127953545d9c6",
  "serviceBinarySha256": "bcd918407de2aa3fdc230d8e9976be5cbf5d3b53185f2a528d55beb10f5f1552",
  "runnerBinarySha256": "e33dd75aa7b481975c0991cf634d07900cdefa51756802e28e64f18b980a83dc",
  "implementation": {
    "description": "resolve the trading-calendar index once when the per-day stock-state cache advances, then reuse it for decision and current rolling-series boundaries",
    "cachedFactorValues": false,
    "cachedSelectionResults": false,
    "cachedOrderState": false,
    "pitSemanticsChanged": false,
    "adjustmentSemanticsChanged": false,
    "fallback": "dates outside the indexed calendar retain the existing date-based rolling fallback"
  },
  "componentBenchmark": {
    "samples": 6,
    "iterationsPerSample": 5000000,
    "dateLookupSeconds": 0.400282218,
    "reusedCalendarIndexSeconds": 0.070751718,
    "speedup": 5.657561813552005,
    "checksum": 90000000,
    "equal": true
  },
  "testGate": {
    "coreUnitTotal": 419,
    "corePassed": 413,
    "ignoredManualBenchmarks": 6,
    "failed": 0,
    "integrationSuitesPassed": true
  },
  "primaryFiveYearContract": {
    "startDate": "2021-08-23",
    "endDate": "2026-08-28",
    "frequency": "1d",
    "matchingType": "next_bar_open",
    "totalReturn": 0.9219861819172002,
    "tradeCount": 26088,
    "canonicalSha256": "b42fea66237d06eadb24f6b8c9e2760e7319fe3699f315b99e01f433ef2aa234",
    "resultStoreSha256": "92343fb369fea68b2544b654151c5c43a935940580b14afbe8eefb3844f72a54",
    "beforeEngineSeconds": [6.764, 6.391, 12.387],
    "beforeMedianEngineSeconds": 6.764,
    "afterHotEngineSeconds": [6.224, 6.497, 6.405, 6.539, 6.386],
    "afterMedianEngineSeconds": 6.405,
    "observedMedianImprovementPercent": 5.307510348905976,
    "benchmarkSummaryProcessHotMedianSeconds": {
      "before": 9.389,
      "after": 6.451
    },
    "note": "The explicit all-run medians are reported above. The benchmark tool excludes its first run when calculating processHotMedian; concurrent non-FIDC load makes the tool summary less comparable than the complete sample list."
  },
  "secondaryFiveYearContract": {
    "description": "same frozen source and execution contract with target positions changed from 30 to 20",
    "totalReturn": 1.1342962298106998,
    "tradeCount": 19404,
    "canonicalSha256": "0dbd3fad624097c673c4a5ec2f545f95e9c21d1d5337bb2b48ffeb22b16cb2b9",
    "resultStoreSha256": "416d2f87241fb4c6b917f6aeecb588f82f6e7d51a103f4c53a74d11971f16839",
    "engineSeconds": [6.217, 9.279, 10.771],
    "resultConsistent": true,
    "performanceClaimed": false,
    "reason": "two runs overlapped high external host contention; the strategy is retained as cross-strategy semantic evidence only"
  },
  "excludedHighContentionBatch": {
    "hostLoadAverageObserved": [65.08, 44.49, 35.56],
    "engineSeconds": [11.601, 12.061, 33.904, 23.149, 7.391],
    "resultConsistent": true,
    "performanceComparisonExcluded": true,
    "reason": "independent tan processes and active FIDC symbolic workers caused material host scheduling contention; no external process was modified"
  },
  "runtime": {
    "servicePid": 2548679,
    "serviceUser": "boris",
    "serviceState": "active/running",
    "allowedCpus": "0 2 4 6 8 10 12 14 48 50 52 54 56 58 60 62",
    "memoryCurrentBytes": 11426254848,
    "memoryPeakBytes": 11427790848,
    "maxConcurrentRuns": 1,
    "runnerThreadsPerRun": 8
  },
  "remoteArtifacts": [
    "/srv/fidc/canonical/run/fidc-private/evidence/calendar-index-before-20260904.json",
    "/srv/fidc/canonical/run/fidc-private/evidence/calendar-index-after-20260904.json",
    "/srv/fidc/canonical/run/fidc-private/evidence/calendar-index-after-hot-20260904.json",
    "/srv/fidc/canonical/run/fidc-private/evidence/calendar-index-secondary-20260905.json"
  ],
  "acceptance": {
    "status": "accepted_component_and_primary_end_to_end_no_regression",
    "reason": "the component path is materially faster, the stable primary five-year batch improves, and both frozen business contracts preserve exact returns, trade counts, canonical digests, result-store digests, and clean terminal audits"
  }
}