{
  "issue": 4440,
  "baseSource": "f55a14ec0",
  "branchProductionSource": "297c38f00",
  "command": "perf_probe <fixture> --iters 5 --json (same profiling executable/arguments as scripts/perf/probe.sh; immutable copies avoid cross-worktree artifact replacement)",
  "measurement": "Two interleaved A/B pairs per fixture, after all four agents explicitly confirmed idle; native only, no browser worker-pool claim.",
  "baseBinarySha256": "e2257ce4f72fbd335b138394dcfe646eae99d63fd2aab554924d89a63a16e8ac",
  "branchBinarySha256": "4928f688c485d39f617000eed33403bebbbbf3573267306a63fe01295c53c8aa",
  "wasmSha256": "199072d1394911ecc10bc16fadfa629f67e260a5953108f9b8e4d05760998f56",
  "identity": "Mesh/vertex/triangle counts, CSG failures and dropped-degenerate counts match on both fixtures; full output byte identity was not measured. Controlled Reference-only host regression requires exact MeshData equality.",
  "verdict": "No consistent material normal-load regression resolved. First AC20 pair varies by one millisecond in reported total; second matches. ISSUE129 total varies below one percent. Small overhead below run-to-run variation is not ruled out.",
  "measurements": {
    "ac20": [
      {
        "base": {
          "path": "tests/models/ara3d/AC20-FZK-Haus.ifc",
          "fileMb": 2.41,
          "entities": 44249,
          "meshes": 285,
          "vertices": 35940,
          "triangles": 19456,
          "indexBuildMs": 1.15,
          "parseMs": 2,
          "entityScanMs": 1,
          "lookupMs": 0,
          "preprocessMs": 0,
          "geometryMs": 4,
          "facetedBrepMs": 0,
          "totalMs": 7,
          "allTotalsMs": [
            10,
            9,
            8,
            7,
            7
          ],
          "allWallMs": [
            11.028666,
            9.866542,
            8.678875000000001,
            8.285334,
            8.076
          ],
          "pointCacheHits": 51916,
          "pointCacheMisses": 9180,
          "csgFailures": 0,
          "degenerateDropped": 0
        },
        "branch": {
          "path": "tests/models/ara3d/AC20-FZK-Haus.ifc",
          "fileMb": 2.41,
          "entities": 44249,
          "meshes": 285,
          "vertices": 35940,
          "triangles": 19456,
          "indexBuildMs": 2.15,
          "parseMs": 3,
          "entityScanMs": 2,
          "lookupMs": 0,
          "preprocessMs": 0,
          "geometryMs": 5,
          "facetedBrepMs": 0,
          "totalMs": 8,
          "allTotalsMs": [
            16,
            11,
            10,
            9,
            8
          ],
          "allWallMs": [
            17.144292,
            11.4555,
            10.478916,
            9.905292,
            9.315791
          ],
          "pointCacheHits": 52292,
          "pointCacheMisses": 9332,
          "csgFailures": 0,
          "degenerateDropped": 0
        }
      },
      {
        "base": {
          "path": "tests/models/ara3d/AC20-FZK-Haus.ifc",
          "fileMb": 2.41,
          "entities": 44249,
          "meshes": 285,
          "vertices": 35940,
          "triangles": 19456,
          "indexBuildMs": 1.19,
          "parseMs": 2,
          "entityScanMs": 1,
          "lookupMs": 0,
          "preprocessMs": 0,
          "geometryMs": 4,
          "facetedBrepMs": 0,
          "totalMs": 7,
          "allTotalsMs": [
            9,
            8,
            7,
            7,
            7
          ],
          "allWallMs": [
            10.292124999999999,
            8.572375000000001,
            8.035542,
            8.209583,
            8.095209
          ],
          "pointCacheHits": 52060,
          "pointCacheMisses": 9180,
          "csgFailures": 0,
          "degenerateDropped": 0
        },
        "branch": {
          "path": "tests/models/ara3d/AC20-FZK-Haus.ifc",
          "fileMb": 2.41,
          "entities": 44249,
          "meshes": 285,
          "vertices": 35940,
          "triangles": 19456,
          "indexBuildMs": 1.0,
          "parseMs": 2,
          "entityScanMs": 1,
          "lookupMs": 0,
          "preprocessMs": 0,
          "geometryMs": 4,
          "facetedBrepMs": 0,
          "totalMs": 7,
          "allTotalsMs": [
            9,
            9,
            8,
            7,
            8
          ],
          "allWallMs": [
            9.4785,
            9.787625,
            8.801,
            7.972333,
            8.425042000000001
          ],
          "pointCacheHits": 51724,
          "pointCacheMisses": 9084,
          "csgFailures": 0,
          "degenerateDropped": 0
        }
      }
    ],
    "issue129": [
      {
        "base": {
          "path": "tests/models/ara3d/ISSUE_129_N1540_17_EXE_MOD_448200_02_09_11SMC_IGC_V17.ifc",
          "fileMb": 11.473,
          "entities": 202661,
          "meshes": 1402,
          "vertices": 218255,
          "triangles": 132674,
          "indexBuildMs": 4.57,
          "parseMs": 8,
          "entityScanMs": 8,
          "lookupMs": 0,
          "preprocessMs": 0,
          "geometryMs": 562,
          "facetedBrepMs": 0,
          "totalMs": 570,
          "allTotalsMs": [
            594,
            592,
            570,
            605,
            583
          ],
          "allWallMs": [
            598.8243749999999,
            597.023583,
            575.884584,
            610.13175,
            588.391209
          ],
          "pointCacheHits": 222724,
          "pointCacheMisses": 27874,
          "csgFailures": 43,
          "degenerateDropped": 6
        },
        "branch": {
          "path": "tests/models/ara3d/ISSUE_129_N1540_17_EXE_MOD_448200_02_09_11SMC_IGC_V17.ifc",
          "fileMb": 11.473,
          "entities": 202661,
          "meshes": 1402,
          "vertices": 218255,
          "triangles": 132674,
          "indexBuildMs": 4.62,
          "parseMs": 8,
          "entityScanMs": 8,
          "lookupMs": 0,
          "preprocessMs": 0,
          "geometryMs": 566,
          "facetedBrepMs": 0,
          "totalMs": 575,
          "allTotalsMs": [
            580,
            596,
            575,
            594,
            578
          ],
          "allWallMs": [
            584.8243749999999,
            600.8173340000001,
            579.655041,
            599.4123340000001,
            583.210375
          ],
          "pointCacheHits": 222726,
          "pointCacheMisses": 27872,
          "csgFailures": 43,
          "degenerateDropped": 6
        }
      },
      {
        "base": {
          "path": "tests/models/ara3d/ISSUE_129_N1540_17_EXE_MOD_448200_02_09_11SMC_IGC_V17.ifc",
          "fileMb": 11.473,
          "entities": 202661,
          "meshes": 1402,
          "vertices": 218255,
          "triangles": 132674,
          "indexBuildMs": 4.59,
          "parseMs": 8,
          "entityScanMs": 8,
          "lookupMs": 0,
          "preprocessMs": 0,
          "geometryMs": 570,
          "facetedBrepMs": 0,
          "totalMs": 578,
          "allTotalsMs": [
            589,
            586,
            578,
            582,
            580
          ],
          "allWallMs": [
            594.842958,
            590.964459,
            583.547,
            587.124958,
            585.048208
          ],
          "pointCacheHits": 222724,
          "pointCacheMisses": 27874,
          "csgFailures": 43,
          "degenerateDropped": 6
        },
        "branch": {
          "path": "tests/models/ara3d/ISSUE_129_N1540_17_EXE_MOD_448200_02_09_11SMC_IGC_V17.ifc",
          "fileMb": 11.473,
          "entities": 202661,
          "meshes": 1402,
          "vertices": 218255,
          "triangles": 132674,
          "indexBuildMs": 4.6,
          "parseMs": 8,
          "entityScanMs": 8,
          "lookupMs": 0,
          "preprocessMs": 0,
          "geometryMs": 570,
          "facetedBrepMs": 0,
          "totalMs": 579,
          "allTotalsMs": [
            587,
            586,
            587,
            583,
            579
          ],
          "allWallMs": [
            591.5821249999999,
            591.5433340000001,
            592.111625,
            587.642667,
            584.031541
          ],
          "pointCacheHits": 222725,
          "pointCacheMisses": 27873,
          "csgFailures": 43,
          "degenerateDropped": 6
        }
      }
    ]
  },
  "checks": {
    "nativeReferenceTests": 2,
    "wasmContractsPassed": 90,
    "wasmContractsFailed": 0,
    "wasmContractsSkipped": 1,
    "wasmSkip": "optional historical baseline",
    "rustWorkspace": "passed",
    "clippyWorkspaceAllTargetsDenyWarnings": "passed",
    "freshWheelHarnessTests": 15,
    "freshWheelCommittedReferenceComparisons": 4
  }
}