bigjakk
e5b411cee5
Fixes a Chromium regression where continuous mouse input (e.g., shooting in FPS games) starves WebSocket/Worker message dispatch when --disable-frame-rate-limit is active. Includes: - Patch diff for main_thread_scheduler_impl.cc - Automated CDP stress test for verification - Full build-from-source guide Pre-built binaries available in Releases. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
89 lines
3.4 KiB
HTML
89 lines
3.4 KiB
HTML
<!DOCTYPE html>
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<html>
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<head><title>WS Starvation Stress Test</title></head>
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<body style="margin:0; overflow:hidden; background:#111;">
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<canvas id="c" style="width:100vw;height:100vh;display:block;"></canvas>
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<div id="hud" style="position:fixed;top:10px;left:10px;color:#0f0;font:14px monospace;background:rgba(0,0,0,0.8);padding:10px;z-index:10;pointer-events:none;"></div>
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<script>
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const canvas = document.getElementById('c');
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const ctx = canvas.getContext('2d');
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const hud = document.getElementById('hud');
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canvas.width = window.innerWidth;
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canvas.height = window.innerHeight;
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// Draw crosshair at mouse position (forces compositor work on every mousemove)
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let mx = canvas.width/2, my = canvas.height/2;
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let mouseDown = false;
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let moveCount = 0;
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let frameCount = 0;
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document.addEventListener('mousedown', (e) => {
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mouseDown = true;
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mx = e.clientX; my = e.clientY;
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// Simulate shooting — draw muzzle flash (forces paint)
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ctx.fillStyle = '#ff0';
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ctx.beginPath();
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ctx.arc(mx, my, 30, 0, Math.PI*2);
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ctx.fill();
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});
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document.addEventListener('mouseup', () => { mouseDown = false; });
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document.addEventListener('mousemove', (e) => {
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mx = e.clientX; my = e.clientY;
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moveCount++;
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// Force layout/paint on every single mousemove
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// This is what triggers the compositor priority boost
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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// Draw crosshair
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ctx.strokeStyle = mouseDown ? '#f00' : '#0f0';
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ctx.lineWidth = 2;
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ctx.beginPath();
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ctx.moveTo(mx - 20, my); ctx.lineTo(mx + 20, my);
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ctx.moveTo(mx, my - 20); ctx.lineTo(mx, my + 20);
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ctx.stroke();
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// Draw particles when "shooting"
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if (mouseDown) {
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for (let i = 0; i < 5; i++) {
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ctx.fillStyle = `hsl(${Math.random()*60}, 100%, 50%)`;
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ctx.fillRect(mx + Math.random()*60-30, my + Math.random()*60-30, 3, 3);
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}
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}
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});
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// requestAnimationFrame loop (keeps compositor busy at unlimited FPS)
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function frame() {
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frameCount++;
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requestAnimationFrame(frame);
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}
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requestAnimationFrame(frame);
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// WebSocket latency tracking
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let wsLatencies = [];
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const ws = new WebSocket('ws://' + location.host);
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ws.onmessage = (e) => {
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const now = performance.now();
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if (ws._lastReceive) {
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wsLatencies.push(now - ws._lastReceive);
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}
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ws._lastReceive = now;
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};
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// Periodic HUD update
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setInterval(() => {
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if (wsLatencies.length < 2) return;
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const recent = wsLatencies.slice(-300); // last 5 seconds at 60Hz
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const sorted = [...recent].sort((a,b) => a - b);
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const avg = recent.reduce((a,b) => a+b, 0) / recent.length;
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const p95 = sorted[Math.floor(sorted.length * 0.95)];
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const p99 = sorted[Math.floor(sorted.length * 0.99)];
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const max = sorted[sorted.length - 1];
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const over50 = recent.filter(x => x > 50).length;
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hud.innerHTML =
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`Mouse: ${mouseDown ? 'SHOOTING' : 'idle'} (${moveCount} moves)<br>` +
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`Frames: ${frameCount}<br>` +
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`WS: avg=${avg.toFixed(1)} p95=${p95.toFixed(1)} p99=${p99.toFixed(1)} max=${max.toFixed(1)}<br>` +
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`WS >50ms: ${over50}/${recent.length} (${(over50/recent.length*100).toFixed(1)}%)`;
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}, 250);
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</script>
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</body>
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</html>
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