anonymous_github/backend/reports/replacement-path-node-comparison.json

{
  "measuredAt": "2026-11-03T19:57:12.926Z",
  "method": "Three fresh processes per runtime, alternating order; transform only, excludes compilation, I/O, child startup and fixture generation. Synthetic data, not production load.",
  "comparison": [
    {
      "name": "2 MB CSV, 47 absent terms",
      "nodeMedianMs": 7.342341000000488,
      "goMedianMs": 2.269,
      "speedup": 3.235936976641907,
      "sha256": "b3882940c0ad7a4f8e1385dcd3e32122c721f26b90144bb820b542e394f379cd"
    },
    {
      "name": "100 MB CSV, 47 absent terms",
      "nodeMedianMs": 238.52490300000045,
      "goMedianMs": 125.287,
      "speedup": 1.9038280348320291,
      "sha256": "fcccff214b1f6838f5d9345237f5252cd57e2263fc95640b2a3a5278156eec48"
    },
    {
      "name": "50 MB CSV, sparse matches",
      "nodeMedianMs": 487.7871639999994,
      "goMedianMs": 345.63,
      "speedup": 1.4112986835633463,
      "sha256": "153ce777c4473651a70f3f2f830cac5930214f6b998c08094939646193b0f9f0"
    },
    {
      "name": "22 MB text, 1.2 million replacements",
      "nodeMedianMs": 386.68259599999965,
      "goMedianMs": 225.984,
      "speedup": 1.7111060783064271,
      "sha256": "4e649aee83a6f15cb7178f725991ff5405affe013b0bba0b6eda18689c5c0249"
    }
  ],
  "samples": [
    {
      "run": 0,
      "implementation": "node",
      "runtime": "v24.14.1",
      "name": "2 MB CSV, 47 absent terms",
      "inputBytes": 1960000,
      "outputBytes": 1960000,
      "compileMs": 58.90463600000021,
      "matchMs": 7.3038470000001325,
      "sha256": "b3882940c0ad7a4f8e1385dcd3e32122c721f26b90144bb820b542e394f379cd"
    },
    {
      "run": 0,
      "implementation": "node",
      "runtime": "v24.14.1",
      "name": "100 MB CSV, 47 absent terms",
      "inputBytes": 100800000,
      "outputBytes": 100800000,
      "compileMs": 0.11717599999974482,
      "matchMs": 219.60045600000012,
      "sha256": "fcccff214b1f6838f5d9345237f5252cd57e2263fc95640b2a3a5278156eec48"
    },
    {
      "run": 0,
      "implementation": "node",
      "runtime": "v24.14.1",
      "name": "50 MB CSV, sparse matches",
      "inputBytes": 50400041,
      "outputBytes": 50400014,
      "compileMs": 0.0605279999999766,
      "matchMs": 487.4682039999998,
      "sha256": "153ce777c4473651a70f3f2f830cac5930214f6b998c08094939646193b0f9f0"
    },
    {
      "run": 0,
      "implementation": "node",
      "runtime": "v24.14.1",
      "name": "22 MB text, 1.2 million replacements",
      "inputBytes": 21600000,
      "outputBytes": 19800000,
      "compileMs": 11.707684999999401,
      "matchMs": 386.68259599999965,
      "sha256": "4e649aee83a6f15cb7178f725991ff5405affe013b0bba0b6eda18689c5c0249"
    },
    {
      "run": 0,
      "implementation": "go",
      "allocatedBytes": 288,
      "compileMs": 3.67,
      "inputBytes": 1960000,
      "matchMs": 0.937,
      "name": "2 MB CSV, 47 absent terms",
      "outputBytes": 1960000,
      "runtime": "go1.27.3",
      "sha256": "b3882940c0ad7a4f8e1385dcd3e32122c721f26b90144bb820b542e394f379cd"
    },
    {
      "run": 0,
      "implementation": "go",
      "allocatedBytes": 288,
      "compileMs": 5.627,
      "inputBytes": 100800000,
      "matchMs": 125.287,
      "name": "100 MB CSV, 47 absent terms",
      "outputBytes": 100800000,
      "runtime": "go1.27.3",
      "sha256": "fcccff214b1f6838f5d9345237f5252cd57e2263fc95640b2a3a5278156eec48"
    },
    {
      "run": 0,
      "implementation": "go",
      "allocatedBytes": 100813472,
      "compileMs": 3.384,
      "inputBytes": 50400041,
      "matchMs": 569.122,
      "name": "50 MB CSV, sparse matches",
      "outputBytes": 50400014,
      "runtime": "go1.27.3",
      "sha256": "153ce777c4473651a70f3f2f830cac5930214f6b998c08094939646193b0f9f0"
    },
    {
      "run": 0,
      "implementation": "go",
      "allocatedBytes": 70813664,
      "compileMs": 4.515,
      "inputBytes": 21600000,
      "matchMs": 198.858,
      "name": "22 MB text, 1.2 million replacements",
      "outputBytes": 19800000,
      "runtime": "go1.27.3",
      "sha256": "4e649aee83a6f15cb7178f725991ff5405affe013b0bba0b6eda18689c5c0249"
    },
    {
      "run": 1,
      "implementation": "go",
      "allocatedBytes": 288,
      "compileMs": 7.926,
      "inputBytes": 1960000,
      "matchMs": 2.269,
      "name": "2 MB CSV, 47 absent terms",
      "outputBytes": 1960000,
      "runtime": "go1.27.3",
      "sha256": "b3882940c0ad7a4f8e1385dcd3e32122c721f26b90144bb820b542e394f379cd"
    },
    {
      "run": 1,
      "implementation": "go",
      "allocatedBytes": 288,
      "compileMs": 5.468,
      "inputBytes": 100800000,
      "matchMs": 116.048,
      "name": "100 MB CSV, 47 absent terms",
      "outputBytes": 100800000,
      "runtime": "go1.27.3",
      "sha256": "fcccff214b1f6838f5d9345237f5252cd57e2263fc95640b2a3a5278156eec48"
    },
    {
      "run": 1,
      "implementation": "go",
      "allocatedBytes": 100813456,
      "compileMs": 3.416,
      "inputBytes": 50400041,
      "matchMs": 345.63,
      "name": "50 MB CSV, sparse matches",
      "outputBytes": 50400014,
      "runtime": "go1.27.3",
      "sha256": "153ce777c4473651a70f3f2f830cac5930214f6b998c08094939646193b0f9f0"
    },
    {
      "run": 1,
      "implementation": "go",
      "allocatedBytes": 70813536,
      "compileMs": 6.587,
      "inputBytes": 21600000,
      "matchMs": 410.56,
      "name": "22 MB text, 1.2 million replacements",
      "outputBytes": 19800000,
      "runtime": "go1.27.3",
      "sha256": "4e649aee83a6f15cb7178f725991ff5405affe013b0bba0b6eda18689c5c0249"
    },
    {
      "run": 1,
      "implementation": "node",
      "runtime": "v24.14.1",
      "name": "2 MB CSV, 47 absent terms",
      "inputBytes": 1960000,
      "outputBytes": 1960000,
      "compileMs": 50.957612000000154,
      "matchMs": 7.342341000000488,
      "sha256": "b3882940c0ad7a4f8e1385dcd3e32122c721f26b90144bb820b542e394f379cd"
    },
    {
      "run": 1,
      "implementation": "node",
      "runtime": "v24.14.1",
      "name": "100 MB CSV, 47 absent terms",
      "inputBytes": 100800000,
      "outputBytes": 100800000,
      "compileMs": 0.10650100000020757,
      "matchMs": 409.96413699999994,
      "sha256": "fcccff214b1f6838f5d9345237f5252cd57e2263fc95640b2a3a5278156eec48"
    },
    {
      "run": 1,
      "implementation": "node",
      "runtime": "v24.14.1",
      "name": "50 MB CSV, sparse matches",
      "inputBytes": 50400041,
      "outputBytes": 50400014,
      "compileMs": 0.07650399999965884,
      "matchMs": 569.306133,
      "sha256": "153ce777c4473651a70f3f2f830cac5930214f6b998c08094939646193b0f9f0"
    },
    {
      "run": 1,
      "implementation": "node",
      "runtime": "v24.14.1",
      "name": "22 MB text, 1.2 million replacements",
      "inputBytes": 21600000,
      "outputBytes": 19800000,
      "compileMs": 13.740774999999303,
      "matchMs": 379.46914800000013,
      "sha256": "4e649aee83a6f15cb7178f725991ff5405affe013b0bba0b6eda18689c5c0249"
    },
    {
      "run": 2,
      "implementation": "node",
      "runtime": "v24.14.1",
      "name": "2 MB CSV, 47 absent terms",
      "inputBytes": 1960000,
      "outputBytes": 1960000,
      "compileMs": 53.339249000000564,
      "matchMs": 11.713882000000012,
      "sha256": "b3882940c0ad7a4f8e1385dcd3e32122c721f26b90144bb820b542e394f379cd"
    },
    {
      "run": 2,
      "implementation": "node",
      "runtime": "v24.14.1",
      "name": "100 MB CSV, 47 absent terms",
      "inputBytes": 100800000,
      "outputBytes": 100800000,
      "compileMs": 0.24719000000004598,
      "matchMs": 238.52490300000045,
      "sha256": "fcccff214b1f6838f5d9345237f5252cd57e2263fc95640b2a3a5278156eec48"
    },
    {
      "run": 2,
      "implementation": "node",
      "runtime": "v24.14.1",
      "name": "50 MB CSV, sparse matches",
      "inputBytes": 50400041,
      "outputBytes": 50400014,
      "compileMs": 0.07269300000007206,
      "matchMs": 487.7871639999994,
      "sha256": "153ce777c4473651a70f3f2f830cac5930214f6b998c08094939646193b0f9f0"
    },
    {
      "run": 2,
      "implementation": "node",
      "runtime": "v24.14.1",
      "name": "22 MB text, 1.2 million replacements",
      "inputBytes": 21600000,
      "outputBytes": 19800000,
      "compileMs": 39.50264599999991,
      "matchMs": 615.7903429999997,
      "sha256": "4e649aee83a6f15cb7178f725991ff5405affe013b0bba0b6eda18689c5c0249"
    },
    {
      "run": 2,
      "implementation": "go",
      "allocatedBytes": 288,
      "compileMs": 8.704,
      "inputBytes": 1960000,
      "matchMs": 2.35,
      "name": "2 MB CSV, 47 absent terms",
      "outputBytes": 1960000,
      "runtime": "go1.27.3",
      "sha256": "b3882940c0ad7a4f8e1385dcd3e32122c721f26b90144bb820b542e394f379cd"
    },
    {
      "run": 2,
      "implementation": "go",
      "allocatedBytes": 288,
      "compileMs": 11.645,
      "inputBytes": 100800000,
      "matchMs": 125.617,
      "name": "100 MB CSV, 47 absent terms",
      "outputBytes": 100800000,
      "runtime": "go1.27.3",
      "sha256": "fcccff214b1f6838f5d9345237f5252cd57e2263fc95640b2a3a5278156eec48"
    },
    {
      "run": 2,
      "implementation": "go",
      "allocatedBytes": 100850560,
      "compileMs": 6.736,
      "inputBytes": 50400041,
      "matchMs": 289.984,
      "name": "50 MB CSV, sparse matches",
      "outputBytes": 50400014,
      "runtime": "go1.27.3",
      "sha256": "153ce777c4473651a70f3f2f830cac5930214f6b998c08094939646193b0f9f0"
    },
    {
      "run": 2,
      "implementation": "go",
      "allocatedBytes": 70818872,
      "compileMs": 3.745,
      "inputBytes": 21600000,
      "matchMs": 225.984,
      "name": "22 MB text, 1.2 million replacements",
      "outputBytes": 19800000,
      "runtime": "go1.27.3",
      "sha256": "4e649aee83a6f15cb7178f725991ff5405affe013b0bba0b6eda18689c5c0249"
    }
  ]
}