{
  "meta": {
    "generated_at": "2026-07-29T12:59:25Z",
    "host": "runnervmvrwv9",
    "machine": "x86_64",
    "system": "Linux 6.17.0-1020-azure",
    "n_runs": 15,
    "method": "warm-cache spawn-inclusive median wall + separate children-rusage CPU (no RSS); suite geos are spawn-inclusive \u2014 multi-MiB engines proved by make hot",
    "f00_version": "f00-config (f00) 0.16.10",
    "notes": "f00 timed as f00-TOOL --core; GNU as /usr/bin/TOOL. Wall and CPU are separate averages (never blended). Wall = spawn-inclusive perf_counter around subprocess (includes process start \u2014 not multi-MiB engine claims by itself). CPU = user+sys via RUSAGE_CHILDREN delta. No RSS. Real multi-MiB law-2 proof is make hot (sort/ls/grep/diff/find), not these suite geo headlines.",
    "packages": {
      "coreutils": {
        "headline": "2.1\u00d7 wall vs GNU coreutils",
        "headline_x": "2.1\u00d7",
        "headline_cpu": "2.3\u00d7 CPU vs GNU coreutils",
        "headline_cpu_x": "2.3\u00d7",
        "tools_ok": 91,
        "ratio_geo": 2.131,
        "cpu_ratio_geo": 2.3
      },
      "grep": {
        "headline": "2.3\u00d7 wall vs GNU grep",
        "headline_x": "2.3\u00d7",
        "headline_cpu": "2.4\u00d7 CPU vs GNU grep",
        "headline_cpu_x": "2.4\u00d7",
        "tools_ok": 3,
        "ratio_geo": 2.26,
        "cpu_ratio_geo": 2.361
      },
      "findutils": {
        "headline": "2.9\u00d7 wall vs GNU findutils",
        "headline_x": "2.9\u00d7",
        "headline_cpu": "3\u00d7 CPU vs GNU findutils",
        "headline_cpu_x": "3\u00d7",
        "tools_ok": 2,
        "ratio_geo": 2.853,
        "cpu_ratio_geo": 2.988
      },
      "diffutils": {
        "headline": "1.9\u00d7 wall vs GNU diffutils",
        "headline_x": "1.9\u00d7",
        "headline_cpu": "2\u00d7 CPU vs GNU diffutils",
        "headline_cpu_x": "2\u00d7",
        "tools_ok": 4,
        "ratio_geo": 1.931,
        "cpu_ratio_geo": 1.974
      }
    }
  },
  "packages": {
    "coreutils": {
      "package": "coreutils",
      "package_label": "GNU coreutils",
      "tools_ok": 91,
      "tools_win": 90,
      "ratio_geo": 2.131,
      "ratio_median": 2.18,
      "ratio_arith": 2.466,
      "ratio_total": 2.367,
      "pct_faster_geo": 113.1,
      "pct_faster_total": 136.7,
      "sum_gnu_ms": 72.88,
      "sum_f00_ms": 30.79,
      "cpu_ratio_geo": 2.3,
      "cpu_ratio_median": 2.343,
      "cpu_wins": 90,
      "cpu_tools_ok": 91,
      "sum_gnu_cpu_ms": 68.83,
      "sum_f00_cpu_ms": 27.04,
      "headline_x": "2.1\u00d7",
      "headline_cpu_x": "2.3\u00d7",
      "headline_pct": "113% faster wall (coreutils)",
      "headline": "2.1\u00d7 wall vs GNU coreutils",
      "headline_cpu": "2.3\u00d7 CPU vs GNU coreutils",
      "method": "separate geo means of per-tool wall and CPU ratios (f00-* --core vs GNU coreutils; spawn-inclusive wall median; CPU = children rusage user+sys)"
    },
    "grep": {
      "package": "grep",
      "package_label": "GNU grep",
      "tools_ok": 3,
      "tools_win": 3,
      "ratio_geo": 2.26,
      "ratio_median": 2.04,
      "ratio_arith": 2.3,
      "ratio_total": 2.272,
      "pct_faster_geo": 126.0,
      "pct_faster_total": 127.2,
      "sum_gnu_ms": 3.07,
      "sum_f00_ms": 1.35,
      "cpu_ratio_geo": 2.361,
      "cpu_ratio_median": 2.103,
      "cpu_wins": 3,
      "cpu_tools_ok": 3,
      "sum_gnu_cpu_ms": 2.95,
      "sum_f00_cpu_ms": 1.24,
      "headline_x": "2.3\u00d7",
      "headline_cpu_x": "2.4\u00d7",
      "headline_pct": "126% faster wall (grep)",
      "headline": "2.3\u00d7 wall vs GNU grep",
      "headline_cpu": "2.4\u00d7 CPU vs GNU grep",
      "method": "separate geo means of per-tool wall and CPU ratios (f00-* --core vs GNU grep; spawn-inclusive wall median; CPU = children rusage user+sys)"
    },
    "findutils": {
      "package": "findutils",
      "package_label": "GNU findutils",
      "tools_ok": 2,
      "tools_win": 2,
      "ratio_geo": 2.853,
      "ratio_median": 3.2,
      "ratio_arith": 3.2,
      "ratio_total": 3.198,
      "pct_faster_geo": 185.3,
      "pct_faster_total": 219.8,
      "sum_gnu_ms": 2.89,
      "sum_f00_ms": 0.9,
      "cpu_ratio_geo": 2.988,
      "cpu_ratio_median": 3.385,
      "cpu_wins": 2,
      "cpu_tools_ok": 2,
      "sum_gnu_cpu_ms": 2.77,
      "sum_f00_cpu_ms": 0.82,
      "headline_x": "2.9\u00d7",
      "headline_cpu_x": "3\u00d7",
      "headline_pct": "185% faster wall (findutils)",
      "headline": "2.9\u00d7 wall vs GNU findutils",
      "headline_cpu": "3\u00d7 CPU vs GNU findutils",
      "method": "separate geo means of per-tool wall and CPU ratios (f00-* --core vs GNU findutils; spawn-inclusive wall median; CPU = children rusage user+sys)"
    },
    "diffutils": {
      "package": "diffutils",
      "package_label": "GNU diffutils",
      "tools_ok": 4,
      "tools_win": 4,
      "ratio_geo": 1.931,
      "ratio_median": 1.83,
      "ratio_arith": 2.055,
      "ratio_total": 2.168,
      "pct_faster_geo": 93.1,
      "pct_faster_total": 116.8,
      "sum_gnu_ms": 4.82,
      "sum_f00_ms": 2.22,
      "cpu_ratio_geo": 1.974,
      "cpu_ratio_median": 1.88,
      "cpu_wins": 4,
      "cpu_tools_ok": 4,
      "sum_gnu_cpu_ms": 4.63,
      "sum_f00_cpu_ms": 2.07,
      "headline_x": "1.9\u00d7",
      "headline_cpu_x": "2\u00d7",
      "headline_pct": "93% faster wall (diffutils)",
      "headline": "1.9\u00d7 wall vs GNU diffutils",
      "headline_cpu": "2\u00d7 CPU vs GNU diffutils",
      "method": "separate geo means of per-tool wall and CPU ratios (f00-* --core vs GNU diffutils; spawn-inclusive wall median; CPU = children rusage user+sys)"
    }
  },
  "summary": {
    "package": "coreutils",
    "package_label": "GNU coreutils",
    "tools_ok": 91,
    "tools_win": 90,
    "ratio_geo": 2.131,
    "ratio_median": 2.18,
    "ratio_arith": 2.466,
    "ratio_total": 2.367,
    "pct_faster_geo": 113.1,
    "pct_faster_total": 136.7,
    "sum_gnu_ms": 72.88,
    "sum_f00_ms": 30.79,
    "cpu_ratio_geo": 2.3,
    "cpu_ratio_median": 2.343,
    "cpu_wins": 90,
    "cpu_tools_ok": 91,
    "sum_gnu_cpu_ms": 68.83,
    "sum_f00_cpu_ms": 27.04,
    "headline_x": "2.1\u00d7",
    "headline_cpu_x": "2.3\u00d7",
    "headline_pct": "113% faster wall (coreutils)",
    "headline": "2.1\u00d7 wall vs GNU coreutils",
    "headline_cpu": "2.3\u00d7 CPU vs GNU coreutils",
    "method": "separate geo means of per-tool wall and CPU ratios (f00-* --core vs GNU coreutils; spawn-inclusive wall median; CPU = children rusage user+sys)"
  },
  "showcase": [
    {
      "tool": "true",
      "package": "coreutils",
      "command_f00": "f00-true --core",
      "time_gnu_ms": 0.444,
      "time_f00_ms": 0.149,
      "cpu_gnu_ms": 0.381,
      "cpu_f00_ms": 0.112,
      "ratio": 2.97,
      "cpu_ratio": 3.4
    },
    {
      "tool": "whoami",
      "package": "coreutils",
      "command_f00": "f00-whoami --core",
      "time_gnu_ms": 0.61,
      "time_f00_ms": 0.151,
      "cpu_gnu_ms": 0.564,
      "cpu_f00_ms": 0.118,
      "ratio": 4.03,
      "cpu_ratio": 4.78
    },
    {
      "tool": "basename",
      "package": "coreutils",
      "command_f00": "f00-basename --core /usr/bin/ls",
      "time_gnu_ms": 0.539,
      "time_f00_ms": 0.147,
      "cpu_gnu_ms": 0.502,
      "cpu_f00_ms": 0.114,
      "ratio": 3.66,
      "cpu_ratio": 4.4
    },
    {
      "tool": "cat",
      "package": "coreutils",
      "command_f00": "f00-cat --core fixture.txt",
      "time_gnu_ms": 0.562,
      "time_f00_ms": 0.171,
      "cpu_gnu_ms": 0.526,
      "cpu_f00_ms": 0.137,
      "ratio": 3.29,
      "cpu_ratio": 3.84
    },
    {
      "tool": "md5sum",
      "package": "coreutils",
      "command_f00": "f00-md5sum --core fixture.txt",
      "time_gnu_ms": 0.898,
      "time_f00_ms": 0.338,
      "cpu_gnu_ms": 0.864,
      "cpu_f00_ms": 0.307,
      "ratio": 2.66,
      "cpu_ratio": 2.81
    },
    {
      "tool": "sha256sum",
      "package": "coreutils",
      "command_f00": "f00-sha256sum --core fixture.txt",
      "time_gnu_ms": 0.885,
      "time_f00_ms": 0.409,
      "cpu_gnu_ms": 0.851,
      "cpu_f00_ms": 0.372,
      "ratio": 2.16,
      "cpu_ratio": 2.29
    },
    {
      "tool": "sort",
      "package": "coreutils",
      "command_f00": "f00-sort --core fixture.txt",
      "time_gnu_ms": 1.096,
      "time_f00_ms": 1.019,
      "cpu_gnu_ms": 1.048,
      "cpu_f00_ms": 0.981,
      "ratio": 1.08,
      "cpu_ratio": 1.07
    },
    {
      "tool": "ls",
      "package": "coreutils",
      "command_f00": "f00-ls --core -1 dir",
      "time_gnu_ms": 0.746,
      "time_f00_ms": 0.385,
      "cpu_gnu_ms": 0.704,
      "cpu_f00_ms": 0.349,
      "ratio": 1.94,
      "cpu_ratio": 2.02
    },
    {
      "tool": "grep",
      "package": "grep",
      "command_f00": "f00-grep --core -F hello fixture.txt",
      "time_gnu_ms": 0.721,
      "time_f00_ms": 0.374,
      "cpu_gnu_ms": 0.683,
      "cpu_f00_ms": 0.336,
      "ratio": 1.93,
      "cpu_ratio": 2.03
    },
    {
      "tool": "find",
      "package": "findutils",
      "command_f00": "f00-find --core -maxdepth 1 -name '*.txt' /tmp/f00-suite-bench.1s6zvskp/dir",
      "time_gnu_ms": 0.789,
      "time_f00_ms": 0.452,
      "cpu_gnu_ms": 0.75,
      "cpu_f00_ms": 0.418,
      "ratio": 1.75,
      "cpu_ratio": 1.79
    },
    {
      "tool": "diff",
      "package": "diffutils",
      "command_f00": "f00-diff --core -u a.txt b.txt",
      "time_gnu_ms": 0.695,
      "time_f00_ms": 0.542,
      "cpu_gnu_ms": 0.648,
      "cpu_f00_ms": 0.507,
      "ratio": 1.28,
      "cpu_ratio": 1.28
    },
    {
      "tool": "cmp",
      "package": "diffutils",
      "command_f00": "f00-cmp --core fixture.txt fixture.txt",
      "time_gnu_ms": 0.601,
      "time_f00_ms": 0.367,
      "cpu_gnu_ms": 0.555,
      "cpu_f00_ms": 0.334,
      "ratio": 1.64,
      "cpu_ratio": 1.66
    },
    {
      "tool": "join",
      "package": "coreutils",
      "command_f00": "f00-join --core a.txt b.txt",
      "time_gnu_ms": 13.133,
      "time_f00_ms": 0.483,
      "cpu_gnu_ms": 13.061,
      "cpu_f00_ms": 0.451,
      "ratio": 27.17,
      "cpu_ratio": 28.96
    },
    {
      "tool": "nproc",
      "package": "coreutils",
      "command_f00": "f00-nproc --core",
      "time_gnu_ms": 0.577,
      "time_f00_ms": 0.148,
      "cpu_gnu_ms": 0.535,
      "cpu_f00_ms": 0.114,
      "ratio": 3.91,
      "cpu_ratio": 4.69
    },
    {
      "tool": "yes",
      "package": "coreutils",
      "command_f00": "f00-yes --core --version",
      "time_gnu_ms": 0.547,
      "time_f00_ms": 0.141,
      "cpu_gnu_ms": 0.511,
      "cpu_f00_ms": 0.109,
      "ratio": 3.88,
      "cpu_ratio": 4.69
    },
    {
      "tool": "tty",
      "package": "coreutils",
      "command_f00": "f00-tty --core",
      "time_gnu_ms": 0.568,
      "time_f00_ms": 0.147,
      "cpu_gnu_ms": 0.524,
      "cpu_f00_ms": 0.112,
      "ratio": 3.87,
      "cpu_ratio": 4.68
    },
    {
      "tool": "fgrep",
      "package": "grep",
      "command_f00": "f00-fgrep --core hello fixture.txt",
      "time_gnu_ms": 1.171,
      "time_f00_ms": 0.399,
      "cpu_gnu_ms": 1.127,
      "cpu_f00_ms": 0.366,
      "ratio": 2.93,
      "cpu_ratio": 3.08
    },
    {
      "tool": "egrep",
      "package": "grep",
      "command_f00": "f00-egrep --core h.llo fixture.txt",
      "time_gnu_ms": 1.178,
      "time_f00_ms": 0.578,
      "cpu_gnu_ms": 1.14,
      "cpu_f00_ms": 0.542,
      "ratio": 2.04,
      "cpu_ratio": 2.1
    },
    {
      "tool": "xargs",
      "package": "findutils",
      "command_f00": "f00-xargs --core -n 2",
      "time_gnu_ms": 2.102,
      "time_f00_ms": 0.452,
      "cpu_gnu_ms": 2.02,
      "cpu_f00_ms": 0.406,
      "ratio": 4.65,
      "cpu_ratio": 4.98
    },
    {
      "tool": "diff3",
      "package": "diffutils",
      "command_f00": "f00-diff3 --core a.txt b.txt a.txt",
      "time_gnu_ms": 2.258,
      "time_f00_ms": 0.689,
      "cpu_gnu_ms": 2.212,
      "cpu_f00_ms": 0.65,
      "ratio": 3.28,
      "cpu_ratio": 3.4
    },
    {
      "tool": "sdiff",
      "package": "diffutils",
      "command_f00": "f00-sdiff --core a.txt b.txt",
      "time_gnu_ms": 1.265,
      "time_f00_ms": 0.625,
      "cpu_gnu_ms": 1.211,
      "cpu_f00_ms": 0.577,
      "ratio": 2.02,
      "cpu_ratio": 2.1
    }
  ],
  "showcase_by_package": {
    "coreutils": [
      {
        "tool": "join",
        "package": "coreutils",
        "command_f00": "f00-join --core a.txt b.txt",
        "time_gnu_ms": 13.133,
        "time_f00_ms": 0.483,
        "cpu_gnu_ms": 13.061,
        "cpu_f00_ms": 0.451,
        "ratio": 27.17,
        "cpu_ratio": 28.96
      },
      {
        "tool": "whoami",
        "package": "coreutils",
        "command_f00": "f00-whoami --core",
        "time_gnu_ms": 0.61,
        "time_f00_ms": 0.151,
        "cpu_gnu_ms": 0.564,
        "cpu_f00_ms": 0.118,
        "ratio": 4.03,
        "cpu_ratio": 4.78
      },
      {
        "tool": "nproc",
        "package": "coreutils",
        "command_f00": "f00-nproc --core",
        "time_gnu_ms": 0.577,
        "time_f00_ms": 0.148,
        "cpu_gnu_ms": 0.535,
        "cpu_f00_ms": 0.114,
        "ratio": 3.91,
        "cpu_ratio": 4.69
      },
      {
        "tool": "yes",
        "package": "coreutils",
        "command_f00": "f00-yes --core --version",
        "time_gnu_ms": 0.547,
        "time_f00_ms": 0.141,
        "cpu_gnu_ms": 0.511,
        "cpu_f00_ms": 0.109,
        "ratio": 3.88,
        "cpu_ratio": 4.69
      },
      {
        "tool": "tty",
        "package": "coreutils",
        "command_f00": "f00-tty --core",
        "time_gnu_ms": 0.568,
        "time_f00_ms": 0.147,
        "cpu_gnu_ms": 0.524,
        "cpu_f00_ms": 0.112,
        "ratio": 3.87,
        "cpu_ratio": 4.68
      },
      {
        "tool": "dirname",
        "package": "coreutils",
        "command_f00": "f00-dirname --core /usr/bin/ls",
        "time_gnu_ms": 0.576,
        "time_f00_ms": 0.15,
        "cpu_gnu_ms": 0.534,
        "cpu_f00_ms": 0.114,
        "ratio": 3.83,
        "cpu_ratio": 4.68
      },
      {
        "tool": "basename",
        "package": "coreutils",
        "command_f00": "f00-basename --core /usr/bin/ls",
        "time_gnu_ms": 0.539,
        "time_f00_ms": 0.147,
        "cpu_gnu_ms": 0.502,
        "cpu_f00_ms": 0.114,
        "ratio": 3.66,
        "cpu_ratio": 4.4
      },
      {
        "tool": "uptime",
        "package": "coreutils",
        "command_f00": "f00-uptime --core",
        "time_gnu_ms": 1.047,
        "time_f00_ms": 0.287,
        "cpu_gnu_ms": 1.009,
        "cpu_f00_ms": 0.236,
        "ratio": 3.64,
        "cpu_ratio": 4.28
      },
      {
        "tool": "nice",
        "package": "coreutils",
        "command_f00": "f00-nice --core true",
        "time_gnu_ms": 0.856,
        "time_f00_ms": 0.249,
        "cpu_gnu_ms": 0.821,
        "cpu_f00_ms": 0.216,
        "ratio": 3.44,
        "cpu_ratio": 3.8
      },
      {
        "tool": "nohup",
        "package": "coreutils",
        "command_f00": "f00-nohup --core true",
        "time_gnu_ms": 0.868,
        "time_f00_ms": 0.255,
        "cpu_gnu_ms": 0.832,
        "cpu_f00_ms": 0.218,
        "ratio": 3.4,
        "cpu_ratio": 3.82
      },
      {
        "tool": "cat",
        "package": "coreutils",
        "command_f00": "f00-cat --core fixture.txt",
        "time_gnu_ms": 0.562,
        "time_f00_ms": 0.171,
        "cpu_gnu_ms": 0.526,
        "cpu_f00_ms": 0.137,
        "ratio": 3.29,
        "cpu_ratio": 3.84
      },
      {
        "tool": "true",
        "package": "coreutils",
        "command_f00": "f00-true --core",
        "time_gnu_ms": 0.444,
        "time_f00_ms": 0.149,
        "cpu_gnu_ms": 0.381,
        "cpu_f00_ms": 0.112,
        "ratio": 2.97,
        "cpu_ratio": 3.4
      },
      {
        "tool": "ptx",
        "package": "coreutils",
        "command_f00": "f00-ptx --core -A fixture.txt",
        "time_gnu_ms": 1.222,
        "time_f00_ms": 0.424,
        "cpu_gnu_ms": 1.173,
        "cpu_f00_ms": 0.388,
        "ratio": 2.89,
        "cpu_ratio": 3.02
      },
      {
        "tool": "timeout",
        "package": "coreutils",
        "command_f00": "f00-timeout --core 5 true",
        "time_gnu_ms": 1.129,
        "time_f00_ms": 0.396,
        "cpu_gnu_ms": 1.07,
        "cpu_f00_ms": 0.361,
        "ratio": 2.85,
        "cpu_ratio": 2.96
      },
      {
        "tool": "vdir",
        "package": "coreutils",
        "command_f00": "f00-vdir --core -1 dir",
        "time_gnu_ms": 0.743,
        "time_f00_ms": 0.265,
        "cpu_gnu_ms": 0.706,
        "cpu_f00_ms": 0.229,
        "ratio": 2.8,
        "cpu_ratio": 3.08
      },
      {
        "tool": "stat",
        "package": "coreutils",
        "command_f00": "f00-stat --core -c %s fixture.txt",
        "time_gnu_ms": 0.706,
        "time_f00_ms": 0.253,
        "cpu_gnu_ms": 0.665,
        "cpu_f00_ms": 0.219,
        "ratio": 2.8,
        "cpu_ratio": 3.04
      },
      {
        "tool": "cksum",
        "package": "coreutils",
        "command_f00": "f00-cksum --core fixture.txt",
        "time_gnu_ms": 0.9,
        "time_f00_ms": 0.325,
        "cpu_gnu_ms": 0.862,
        "cpu_f00_ms": 0.291,
        "ratio": 2.77,
        "cpu_ratio": 2.96
      },
      {
        "tool": "install",
        "package": "coreutils",
        "command_f00": "f00-install --core -m 644 fixture inst.out",
        "time_gnu_ms": 0.861,
        "time_f00_ms": 0.313,
        "cpu_gnu_ms": 0.828,
        "cpu_f00_ms": 0.267,
        "ratio": 2.75,
        "cpu_ratio": 3.1
      },
      {
        "tool": "dir",
        "package": "coreutils",
        "command_f00": "f00-dir --core -1 dir",
        "time_gnu_ms": 0.724,
        "time_f00_ms": 0.269,
        "cpu_gnu_ms": 0.683,
        "cpu_f00_ms": 0.231,
        "ratio": 2.69,
        "cpu_ratio": 2.96
      },
      {
        "tool": "cp",
        "package": "coreutils",
        "command_f00": "f00-cp --core fixture.txt cp.out",
        "time_gnu_ms": 0.881,
        "time_f00_ms": 0.328,
        "cpu_gnu_ms": 0.836,
        "cpu_f00_ms": 0.286,
        "ratio": 2.69,
        "cpu_ratio": 2.92
      },
      {
        "tool": "md5sum",
        "package": "coreutils",
        "command_f00": "f00-md5sum --core fixture.txt",
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