{
  "project": "impulse",
  "repository": "https://github.com/kaan0d/impulse",
  "measuredOn": "2026-09-19",
  "environment": {
    "build": "production build (vite build, vite preview)",
    "browser": "headless Chrome 153 driven by Playwright",
    "os": "Windows 11",
    "cpu": "AMD Ryzen 7 5800X (16 threads)",
    "timerResolutionMs": 0.1,
    "note": "two benchmark runs differed by up to about 12% (pyramid), usually less; the tower \"before\" figures come from an earlier solver setup (30 iterations, no block solver)"
  },
  "counts": {
    "runtimeDependencies": 0,
    "unitTests": 171,
    "browserTests": 14,
    "engineLines": 2041,
    "testLines": 2171,
    "demoJavaScriptBytes": 35637,
    "demoJavaScriptGzipBytes": 12710
  },
  "towerTimeToSleepSeconds": [
    {
      "label": "10 boxes, aligned",
      "before": 7.4,
      "beforeMeasured": true,
      "after": 0.9
    },
    {
      "label": "10 boxes, staggered 5 cm",
      "before": 5.6,
      "beforeMeasured": true,
      "after": 0.9
    },
    {
      "label": "10 boxes, dropped from 10 cm gaps",
      "before": 6.7,
      "beforeMeasured": true,
      "after": 1.4
    },
    {
      "label": "10 boxes, staggered 10 cm, 5 cm gaps",
      "before": 3.5,
      "beforeMeasured": true,
      "after": 1.5
    },
    {
      "label": "15 boxes, aligned",
      "before": null,
      "beforeMeasured": true,
      "after": 1.4
    },
    {
      "label": "20 boxes, staggered 3 cm",
      "before": null,
      "beforeMeasured": false,
      "after": 2.4
    }
  ],
  "iterationsVersusTimeToSleepSeconds": [
    {
      "iterations": 6,
      "tower10": 1.1,
      "tower20": null
    },
    {
      "iterations": 8,
      "tower10": 0.9,
      "tower20": 3
    },
    {
      "iterations": 10,
      "tower10": 0.9,
      "tower20": 2.4
    },
    {
      "iterations": 15,
      "tower10": 0.7,
      "tower20": 1.7
    },
    {
      "iterations": 20,
      "tower10": 0.7,
      "tower20": 1.4
    },
    {
      "iterations": 30,
      "tower10": 0.6,
      "tower20": 1
    }
  ],
  "stepTimeMs": [
    {
      "name": "Pyramid, 210 boxes",
      "bodies": 210,
      "steps": 240,
      "avg": 0.86,
      "p95": 1.1,
      "max": 1.5,
      "contacts": 403,
      "awake": 210
    },
    {
      "name": "Pyramid, 210 boxes, sleeping on",
      "bodies": 210,
      "steps": 240,
      "avg": 0.29,
      "p95": 0.9,
      "max": 1.2,
      "contacts": 403,
      "awake": 0
    },
    {
      "name": "Pile, 500 bodies",
      "bodies": 500,
      "steps": 480,
      "avg": 1.47,
      "p95": 1.8,
      "max": 2.5,
      "contacts": 986,
      "awake": 500
    },
    {
      "name": "Pile, 500 bodies, sleeping on",
      "bodies": 500,
      "steps": 480,
      "avg": 1.39,
      "p95": 1.7,
      "max": 2,
      "contacts": 986,
      "awake": 500
    },
    {
      "name": "Pile, 1000 bodies",
      "bodies": 1000,
      "steps": 300,
      "avg": 2.59,
      "p95": 3.9,
      "max": 4.7,
      "contacts": 2116,
      "awake": 1000
    }
  ],
  "broadphaseMs": [
    {
      "bodies": 250,
      "pairs": 123,
      "hash": 0.03,
      "brute": 0.12,
      "speedup": 4.4
    },
    {
      "bodies": 500,
      "pairs": 251,
      "hash": 0.05,
      "brute": 0.38,
      "speedup": 7.7
    },
    {
      "bodies": 1000,
      "pairs": 488,
      "hash": 0.1,
      "brute": 1.48,
      "speedup": 14.8
    },
    {
      "bodies": 2000,
      "pairs": 980,
      "hash": 0.27,
      "brute": 6.05,
      "speedup": 22.4
    },
    {
      "bodies": 4000,
      "pairs": 2064,
      "hash": 0.6,
      "brute": 25.7,
      "speedup": 42.5
    }
  ]
}