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stress test
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15 files changed

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-4
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‎benches/apps/boids/src/world.ts‎

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@@ -6,7 +6,7 @@ export const world = createWorld(
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Time,
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SpatialHashMap(new SpatialHashMapImpl(5)),
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BoidsConfig({
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initialCount: 500,
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initialCount: 4000,
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maxVelocity: 6,
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separationFactor: 16,
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alignmentFactor: 0.5,

‎benches/apps/stress-test/index.html‎

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<!doctype html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>Koota ECS Stress Test</title>
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</head>
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<body>
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<div id="app"></div>
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<script type="module" src="/src/main.ts"></script>
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</body>
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</html>

‎benches/apps/stress-test/package.json‎

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{
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"name": "@app/stress-test",
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"private": true,
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"version": "0.0.1",
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"type": "module",
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"scripts": {
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"dev": "vite",
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"build": "tsc && vite build",
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"preview": "vite preview"
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},
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"dependencies": {
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"koota": "workspace:*",
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"@sim/stress-test": "workspace:*"
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},
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"devDependencies": {
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"@config/typescript": "workspace:*",
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"vite": "catalog:"
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}
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}

‎benches/apps/stress-test/src/main.ts‎

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import type { BenchResult } from '@sim/stress-test';
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import {
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benchMixedWorkload,
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benchMultiQueryPopulation,
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benchNotQueryChurn,
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benchQueryIteration,
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benchSpawnDestroy,
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benchTraitChurn,
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benchWideArchetype,
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} from '@sim/stress-test';
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const ITERATIONS = 50;
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type Suite = { name: string; run: () => BenchResult };
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const suites: Suite[] = [
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{ name: 'spawn & destroy', run: () => benchSpawnDestroy(ITERATIONS) },
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{ name: 'trait churn', run: () => benchTraitChurn(ITERATIONS) },
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{ name: 'query iteration', run: () => benchQueryIteration(ITERATIONS) },
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{ name: 'multi-query population', run: () => benchMultiQueryPopulation(ITERATIONS) },
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{ name: 'wide archetype', run: () => benchWideArchetype(ITERATIONS) },
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{ name: 'not-query churn', run: () => benchNotQueryChurn(ITERATIONS) },
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{ name: 'mixed workload', run: () => benchMixedWorkload(ITERATIONS) },
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];
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function fmtMs(v: number): string {
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if (v < 0.001) return `${(v * 1000).toFixed(2)} µs`;
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if (v < 1) return `${(v * 1000).toFixed(1)} µs`;
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return `${v.toFixed(3)} ms`;
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}
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function createUI(): {
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setStatus: (text: string) => void;
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addResult: (r: BenchResult) => void;
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setDone: () => void;
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} {
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const app = document.getElementById('app')!;
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app.innerHTML = '';
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const style = document.createElement('style');
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style.textContent = `
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* { margin: 0; padding: 0; box-sizing: border-box; }
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body { background: #0d1117; color: #c9d1d9; font-family: 'SF Mono', 'Cascadia Code', 'Fira Code', monospace; font-size: 14px; padding: 24px; }
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h1 { color: #58a6ff; font-size: 20px; margin-bottom: 4px; }
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.subtitle { color: #8b949e; font-size: 13px; margin-bottom: 20px; }
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#status { color: #f0883e; margin-bottom: 16px; font-size: 13px; }
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table { border-collapse: collapse; width: 100%; max-width: 1100px; }
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th { text-align: left; padding: 8px 12px; border-bottom: 2px solid #30363d; color: #8b949e; font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
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th.num { text-align: right; }
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td { padding: 8px 12px; border-bottom: 1px solid #21262d; }
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td.num { text-align: right; font-variant-numeric: tabular-nums; }
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td.name { color: #58a6ff; font-weight: 500; }
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tr:hover td { background: #161b22; }
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#run-btn { margin-top: 16px; padding: 8px 20px; background: #238636; color: #fff; border: none; border-radius: 6px; font-family: inherit; font-size: 14px; cursor: pointer; }
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#run-btn:hover { background: #2ea043; }
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#run-btn:disabled { background: #21262d; color: #484f58; cursor: not-allowed; }
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`;
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document.head.appendChild(style);
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const h1 = document.createElement('h1');
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h1.textContent = 'Koota ECS Stress Test';
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app.appendChild(h1);
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const sub = document.createElement('div');
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sub.className = 'subtitle';
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sub.textContent = `${ITERATIONS} iterations per benchmark · ${suites.length} benchmarks`;
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app.appendChild(sub);
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const status = document.createElement('div');
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status.id = 'status';
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app.appendChild(status);
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const table = document.createElement('table');
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const thead = document.createElement('thead');
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const headerRow = document.createElement('tr');
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const cols = ['Benchmark', 'Mean', 'Median', 'Min', 'Max', 'P99', 'P99.9', 'StdDev', 'ops/s'];
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for (const col of cols) {
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const th = document.createElement('th');
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th.textContent = col;
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if (col !== 'Benchmark') th.className = 'num';
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headerRow.appendChild(th);
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}
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thead.appendChild(headerRow);
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table.appendChild(thead);
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const tbody = document.createElement('tbody');
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table.appendChild(tbody);
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app.appendChild(table);
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const btn = document.createElement('button');
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btn.id = 'run-btn';
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btn.textContent = 'Run Again';
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btn.disabled = true;
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btn.onclick = () => {
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tbody.innerHTML = '';
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runAll();
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};
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app.appendChild(btn);
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return {
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setStatus(text: string) {
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status.textContent = text;
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},
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addResult(r: BenchResult) {
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const tr = document.createElement('tr');
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const vals = [
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{ text: r.name, cls: 'name' },
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{ text: fmtMs(r.mean), cls: 'num' },
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{ text: fmtMs(r.median), cls: 'num' },
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{ text: fmtMs(r.min), cls: 'num' },
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{ text: fmtMs(r.max), cls: 'num' },
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{ text: fmtMs(r.p99), cls: 'num' },
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{ text: fmtMs(r.p999), cls: 'num' },
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{ text: fmtMs(r.stddev), cls: 'num' },
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{ text: (1000 / r.mean).toFixed(1), cls: 'num' },
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];
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for (const v of vals) {
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const td = document.createElement('td');
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td.textContent = v.text;
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td.className = v.cls;
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tr.appendChild(td);
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}
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tbody.appendChild(tr);
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},
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setDone() {
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status.textContent = 'Done.';
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btn.disabled = false;
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},
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};
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}
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const ui = createUI();
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function runAll() {
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const btn = document.getElementById('run-btn') as HTMLButtonElement;
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btn.disabled = true;
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let idx = 0;
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function next() {
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if (idx >= suites.length) {
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ui.setDone();
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return;
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}
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const suite = suites[idx];
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ui.setStatus(`Running ${idx + 1}/${suites.length}: ${suite.name}...`);
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setTimeout(() => {
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const result = suite.run();
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ui.addResult(result);
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idx++;
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next();
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}, 50);
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}
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next();
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}
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runAll();

‎benches/apps/stress-test/tsconfig.json‎

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{
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"extends": "@config/typescript/base.json",
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"include": ["src"]
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}

‎benches/sims/add-remove/src/constants.ts‎

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export const CONSTANTS = {
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BODIES: 40000,
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BODIES: 300000,
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GRAVITY: -9.81 * 2,
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FLOOR: -1000,
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COMPONENTS: 100,
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MAX_COMPS_PER_ENTITY: 20,
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MAX_COMPS_PER_ENTITY: 50,
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DRAIN: false,
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};

‎benches/sims/n-body/src/constants.ts‎

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const NBODIES = 2000; // Number of entities
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const NBODIES = 10000; // Number of entities
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const BASE_MASS = 0.1; // Base mass
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const VAR_MASS = 0.8; // Amount of randomness added to mass
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const INITIAL_C = 12000; // Mass used in calculation of orbital speed

‎benches/sims/stress-test/package.json‎

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{
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"name": "@sim/stress-test",
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"private": true,
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"version": "0.0.1",
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"description": "Comprehensive ECS stress test targeting BitSet, TraitData[], Query[], and micro-optimizations",
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"type": "module",
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"main": "./src/index.ts",
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"dependencies": {
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"koota": "workspace:*"
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},
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"devDependencies": {
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"@config/typescript": "workspace:*"
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}
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}

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