{
  "version": "0.10.0",
  "feature": "write-precompute",
  "measured_at": "2026-08-02",
  "host_note": "合成 workload；本机 Python 3.6.15；内存 sink + 全表黄金；同一 plan 仅切 late_fields；runs=1",
  "contracts": {
    "calc_calls": "equal N×M",
    "values": "golden_ok",
    "authoring": "no new YAML / no master switch"
  },
  "workload": [
    {
      "id": "report_mixed_row",
      "label": "报表混合·行写出",
      "sink": "row",
      "rows": 20000,
      "flat": 48,
      "chain": 8,
      "derived": 56,
      "eager_s": 2.4826,
      "late_s": 1.5818,
      "speedup": 1.569,
      "peak_ratio": 20000.0,
      "est_eager_gib": 0.066757,
      "est_late_gib": 3.337860107421875e-06,
      "late_fields": 56,
      "calc_calls_equal": true,
      "golden_ok": true
    },
    {
      "id": "report_mixed_column",
      "label": "报表混合·列写出",
      "sink": "column",
      "rows": 20000,
      "flat": 48,
      "chain": 8,
      "derived": 56,
      "eager_s": 1.9899,
      "late_s": 1.7901,
      "speedup": 1.112,
      "peak_ratio": 7.0,
      "est_eager_gib": 0.066757,
      "est_late_gib": 0.0095367431640625,
      "late_fields": 56,
      "calc_calls_equal": true,
      "golden_ok": true
    },
    {
      "id": "wide_export_row",
      "label": "宽表纯导出·行",
      "sink": "row",
      "rows": 10000,
      "flat": 80,
      "chain": 0,
      "derived": 80,
      "eager_s": 1.6394,
      "late_s": 1.0572,
      "speedup": 1.551,
      "peak_ratio": 10000.0,
      "est_eager_gib": 0.047684,
      "est_late_gib": 4.76837158203125e-06,
      "late_fields": 80,
      "calc_calls_equal": true,
      "golden_ok": true
    },
    {
      "id": "wide_export_column",
      "label": "宽表纯导出·列",
      "sink": "column",
      "rows": 10000,
      "flat": 80,
      "chain": 0,
      "derived": 80,
      "eager_s": 1.3997,
      "late_s": 1.3097,
      "speedup": 1.069,
      "peak_ratio": 80.0,
      "est_eager_gib": 0.047684,
      "est_late_gib": 0.0005960464477539062,
      "late_fields": 80,
      "calc_calls_equal": true,
      "golden_ok": true
    },
    {
      "id": "chain_export_row",
      "label": "链式派生·行",
      "sink": "row",
      "rows": 30000,
      "flat": 4,
      "chain": 24,
      "derived": 28,
      "eager_s": 2.201,
      "late_s": 1.3784,
      "speedup": 1.597,
      "peak_ratio": 30000.0,
      "est_eager_gib": 0.050068,
      "est_late_gib": 1.6689300537109375e-06,
      "late_fields": 28,
      "calc_calls_equal": true,
      "golden_ok": true
    },
    {
      "id": "engine_proxy_flat_row",
      "label": "引擎代理宽表·行",
      "sink": "row",
      "rows": 8000,
      "flat": 120,
      "chain": 0,
      "derived": 120,
      "eager_s": 1.8749,
      "late_s": 1.2069,
      "speedup": 1.553,
      "peak_ratio": 8000.0,
      "est_eager_gib": 0.05722,
      "est_late_gib": 7.152557373046875e-06,
      "late_fields": 120,
      "calc_calls_equal": true,
      "golden_ok": true
    },
    {
      "id": "dense_rows_moderate_row",
      "label": "大行数中等宽·行",
      "sink": "row",
      "rows": 50000,
      "flat": 32,
      "chain": 4,
      "derived": 36,
      "eager_s": 4.3208,
      "late_s": 2.9444,
      "speedup": 1.467,
      "peak_ratio": 50000.0,
      "est_eager_gib": 0.107288,
      "est_late_gib": 2.1457672119140625e-06,
      "late_fields": 36,
      "calc_calls_equal": true,
      "golden_ok": true
    }
  ],
  "engine_small_5gib": [
    {
      "case_id": "small_flat_row",
      "topology": "flat",
      "sink": "row",
      "duration_s": 127.12,
      "rss_peak_mib": 83.7,
      "est_eager_gib": 5.0,
      "golden_ok": true
    },
    {
      "case_id": "small_flat_column",
      "topology": "flat",
      "sink": "column",
      "duration_s": 110.15,
      "rss_peak_mib": 64.1,
      "est_eager_gib": 5.0,
      "golden_ok": true
    },
    {
      "case_id": "small_chain_row",
      "topology": "chain",
      "sink": "row",
      "duration_s": 145.8,
      "rss_peak_mib": 472.2,
      "est_eager_gib": 5.62,
      "golden_ok": true
    },
    {
      "case_id": "small_chain_column",
      "topology": "chain",
      "sink": "column",
      "duration_s": 116.65,
      "rss_peak_mib": 471.4,
      "est_eager_gib": 5.62,
      "golden_ok": true
    },
    {
      "case_id": "small_mixed_row",
      "topology": "mixed",
      "sink": "row",
      "duration_s": 125.88,
      "rss_peak_mib": 95.0,
      "est_eager_gib": 5.0,
      "golden_ok": true
    },
    {
      "case_id": "small_mixed_column",
      "topology": "mixed",
      "sink": "column",
      "duration_s": 111.11,
      "rss_peak_mib": 86.1,
      "est_eager_gib": 5.0,
      "golden_ok": true
    }
  ],
  "micro_m_sweep": [
    {
      "m": 1,
      "row_speedup": 1.23
    },
    {
      "m": 4,
      "row_speedup": 1.46
    },
    {
      "m": 40,
      "row_speedup": 2.18,
      "col_speedup": 1.23
    }
  ],
  "residency_matrix": [
    {
      "scale": "small",
      "topology": "flat",
      "sink": "row",
      "rows": 52428,
      "flat": 1600,
      "chain": 0,
      "est_eager_gib": 5.0,
      "est_late_gib": 0.0001,
      "peak_ratio": 52428.0
    },
    {
      "scale": "small",
      "topology": "flat",
      "sink": "column",
      "rows": 52428,
      "flat": 1600,
      "chain": 0,
      "est_eager_gib": 5.0,
      "est_late_gib": 0.0031,
      "peak_ratio": 1600.0
    },
    {
      "scale": "small",
      "topology": "chain",
      "sink": "row",
      "rows": 1310720,
      "flat": 8,
      "chain": 64,
      "est_eager_gib": 5.62,
      "est_late_gib": 0.0,
      "peak_ratio": 1310720.0
    },
    {
      "scale": "small",
      "topology": "chain",
      "sink": "column",
      "rows": 1310720,
      "flat": 8,
      "chain": 64,
      "est_eager_gib": 5.62,
      "est_late_gib": 5.0,
      "peak_ratio": 1.1
    },
    {
      "scale": "small",
      "topology": "mixed",
      "sink": "row",
      "rows": 102801,
      "flat": 800,
      "chain": 16,
      "est_eager_gib": 5.0,
      "est_late_gib": 0.0,
      "peak_ratio": 102801.0
    },
    {
      "scale": "small",
      "topology": "mixed",
      "sink": "column",
      "rows": 102801,
      "flat": 800,
      "chain": 16,
      "est_eager_gib": 5.0,
      "est_late_gib": 0.098,
      "peak_ratio": 51.0
    },
    {
      "scale": "medium",
      "topology": "flat",
      "sink": "row",
      "rows": 104857,
      "flat": 2400,
      "chain": 0,
      "est_eager_gib": 15.0,
      "est_late_gib": 0.0001,
      "peak_ratio": 104857.0
    },
    {
      "scale": "medium",
      "topology": "flat",
      "sink": "column",
      "rows": 104857,
      "flat": 2400,
      "chain": 0,
      "est_eager_gib": 15.0,
      "est_late_gib": 0.0062,
      "peak_ratio": 2400.0
    },
    {
      "scale": "medium",
      "topology": "chain",
      "sink": "row",
      "rows": 2621440,
      "flat": 8,
      "chain": 96,
      "est_eager_gib": 16.25,
      "est_late_gib": 0.0,
      "peak_ratio": 2621440.0
    },
    {
      "scale": "medium",
      "topology": "chain",
      "sink": "column",
      "rows": 2621440,
      "flat": 8,
      "chain": 96,
      "est_eager_gib": 16.25,
      "est_late_gib": 15.0,
      "peak_ratio": 1.1
    },
    {
      "scale": "medium",
      "topology": "mixed",
      "sink": "row",
      "rows": 205603,
      "flat": 1200,
      "chain": 24,
      "est_eager_gib": 15.0,
      "est_late_gib": 0.0001,
      "peak_ratio": 205603.0
    },
    {
      "scale": "medium",
      "topology": "mixed",
      "sink": "column",
      "rows": 205603,
      "flat": 1200,
      "chain": 24,
      "est_eager_gib": 15.0,
      "est_late_gib": 0.2941,
      "peak_ratio": 51.0
    },
    {
      "scale": "large",
      "topology": "flat",
      "sink": "row",
      "rows": 157286,
      "flat": 3200,
      "chain": 0,
      "est_eager_gib": 30.0,
      "est_late_gib": 0.0002,
      "peak_ratio": 157286.0
    },
    {
      "scale": "large",
      "topology": "flat",
      "sink": "column",
      "rows": 157286,
      "flat": 3200,
      "chain": 0,
      "est_eager_gib": 30.0,
      "est_late_gib": 0.0094,
      "peak_ratio": 3200.0
    },
    {
      "scale": "large",
      "topology": "chain",
      "sink": "row",
      "rows": 3932160,
      "flat": 8,
      "chain": 128,
      "est_eager_gib": 31.88,
      "est_late_gib": 0.0,
      "peak_ratio": 3932160.0
    },
    {
      "scale": "large",
      "topology": "chain",
      "sink": "column",
      "rows": 3932160,
      "flat": 8,
      "chain": 128,
      "est_eager_gib": 31.88,
      "est_late_gib": 30.0,
      "peak_ratio": 1.1
    },
    {
      "scale": "large",
      "topology": "mixed",
      "sink": "row",
      "rows": 308404,
      "flat": 1600,
      "chain": 32,
      "est_eager_gib": 30.0,
      "est_late_gib": 0.0001,
      "peak_ratio": 308404.0
    },
    {
      "scale": "large",
      "topology": "mixed",
      "sink": "column",
      "rows": 308404,
      "flat": 1600,
      "chain": 32,
      "est_eager_gib": 30.0,
      "est_late_gib": 0.5882,
      "peak_ratio": 51.0
    }
  ]
}