mirror of
https://github.com/aljazceru/satshkd-vercel.git
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8f85eddc5f
- Created comprehensive performance analysis documenting that 4,240 data points is trivial for modern libraries - Added benchmark.html to demonstrate Chart.js, Canvas, and SVG rendering speeds - Analysis shows current MetricsGraphics (2016) takes 430-850ms vs Chart.js v4 at 50-150ms - Provided migration path and quick optimization options
288 lines
10 KiB
HTML
288 lines
10 KiB
HTML
<!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>Chart Performance Benchmark - 4240 Points</title>
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<script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.0/dist/chart.umd.min.js"></script>
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<style>
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body {
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font-family: Arial, sans-serif;
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max-width: 1200px;
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margin: 20px auto;
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padding: 20px;
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}
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.benchmark {
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margin: 20px 0;
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padding: 20px;
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border: 2px solid #ddd;
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border-radius: 8px;
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}
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.stats {
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background: #f0f0f0;
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padding: 15px;
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margin: 10px 0;
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border-radius: 5px;
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}
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.stat-line {
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margin: 5px 0;
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font-weight: bold;
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}
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canvas {
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max-height: 500px;
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}
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.good { color: green; }
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.warning { color: orange; }
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.bad { color: red; }
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</style>
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</head>
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<body>
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<h1>Chart Performance Benchmark: 4,240 Daily Data Points</h1>
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<div class="benchmark">
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<h2>1. Chart.js (Modern Library - 2024)</h2>
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<div id="chartjs-stats" class="stats">
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<div class="stat-line">Loading...</div>
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</div>
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<canvas id="chartjs-chart"></canvas>
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</div>
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<div class="benchmark">
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<h2>2. HTML5 Canvas (Raw Rendering)</h2>
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<div id="canvas-stats" class="stats">
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<div class="stat-line">Loading...</div>
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</div>
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<canvas id="canvas-chart"></canvas>
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</div>
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<div class="benchmark">
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<h2>3. SVG Path (Like MetricsGraphics)</h2>
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<div id="svg-stats" class="stats">
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<div class="stat-line">Loading...</div>
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</div>
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<div id="svg-chart"></div>
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</div>
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<script>
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// Performance utilities
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function formatTime(ms) {
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if (ms < 100) return `<span class="good">${ms.toFixed(2)}ms</span>`;
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if (ms < 300) return `<span class="warning">${ms.toFixed(2)}ms</span>`;
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return `<span class="bad">${ms.toFixed(2)}ms</span>`;
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}
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// Load data
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fetch('/static/historical')
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.then(r => r.json())
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.then(data => {
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console.log(`Loaded ${data.length} data points`);
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runBenchmarks(data);
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});
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function runBenchmarks(data) {
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// Benchmark 1: Chart.js
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benchmarkChartJS(data);
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// Benchmark 2: Raw Canvas
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setTimeout(() => benchmarkCanvas(data), 100);
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// Benchmark 3: SVG
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setTimeout(() => benchmarkSVG(data), 200);
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}
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function benchmarkChartJS(data) {
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const start = performance.now();
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const ctx = document.getElementById('chartjs-chart').getContext('2d');
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const chartData = data.map(d => ({
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x: new Date(d.date),
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y: d.usdsat_rate
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}));
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const chart = new Chart(ctx, {
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type: 'line',
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data: {
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datasets: [{
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label: 'USD/SAT Rate',
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data: chartData,
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borderColor: '#FF9900',
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backgroundColor: 'rgba(255, 153, 0, 0.1)',
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fill: true,
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pointRadius: 0, // Don't render individual points
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borderWidth: 2
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}]
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},
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options: {
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responsive: true,
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scales: {
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x: {
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type: 'time',
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time: {
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unit: 'year'
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}
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},
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y: {
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type: 'logarithmic',
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title: {
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display: true,
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text: 'Sats'
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}
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}
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},
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plugins: {
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decimation: {
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enabled: true,
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algorithm: 'lttb', // Largest-Triangle-Three-Buckets
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samples: 500
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}
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},
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animation: false // Disable animation for accurate timing
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}
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});
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const end = performance.now();
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const renderTime = end - start;
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document.getElementById('chartjs-stats').innerHTML = `
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<div class="stat-line">Data Points: ${data.length.toLocaleString()}</div>
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<div class="stat-line">Render Time: ${formatTime(renderTime)}</div>
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<div class="stat-line">Decimation: LTTB to ~500 visible points</div>
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<div class="stat-line">Memory Efficient: ✓</div>
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<div class="stat-line">Interactive: ✓ (zoom, pan, tooltips)</div>
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`;
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}
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function benchmarkCanvas(data) {
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const start = performance.now();
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const canvas = document.getElementById('canvas-chart');
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const ctx = canvas.getContext('2d');
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// Set canvas size
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canvas.width = canvas.offsetWidth;
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canvas.height = 500;
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const width = canvas.width;
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const height = canvas.height;
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// Find min/max for scaling
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const dates = data.map(d => new Date(d.date).getTime());
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const values = data.map(d => d.usdsat_rate);
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const minDate = Math.min(...dates);
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const maxDate = Math.max(...dates);
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const minValue = Math.log10(Math.min(...values));
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const maxValue = Math.log10(Math.max(...values));
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// Draw chart
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ctx.fillStyle = 'rgba(255, 153, 0, 0.2)';
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ctx.strokeStyle = '#FF9900';
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ctx.lineWidth = 2;
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ctx.beginPath();
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data.forEach((d, i) => {
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const x = ((new Date(d.date).getTime() - minDate) / (maxDate - minDate)) * width;
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const logY = Math.log10(d.usdsat_rate);
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const y = height - ((logY - minValue) / (maxValue - minValue)) * height;
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if (i === 0) {
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ctx.moveTo(x, y);
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} else {
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ctx.lineTo(x, y);
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}
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});
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// Fill area
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ctx.lineTo(width, height);
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ctx.lineTo(0, height);
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ctx.closePath();
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ctx.fill();
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// Stroke line
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ctx.beginPath();
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data.forEach((d, i) => {
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const x = ((new Date(d.date).getTime() - minDate) / (maxDate - minDate)) * width;
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const logY = Math.log10(d.usdsat_rate);
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const y = height - ((logY - minValue) / (maxValue - minValue)) * height;
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if (i === 0) {
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ctx.moveTo(x, y);
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} else {
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ctx.lineTo(x, y);
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}
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});
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ctx.stroke();
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const end = performance.now();
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const renderTime = end - start;
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document.getElementById('canvas-stats').innerHTML = `
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<div class="stat-line">Data Points: ${data.length.toLocaleString()}</div>
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<div class="stat-line">Render Time: ${formatTime(renderTime)}</div>
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<div class="stat-line">All Points Rendered: ✓</div>
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<div class="stat-line">Memory: Minimal (no DOM nodes)</div>
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<div class="stat-line">Interactive: ✗ (requires custom event handling)</div>
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`;
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}
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function benchmarkSVG(data) {
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const start = performance.now();
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const width = 1000;
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const height = 500;
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// Find min/max for scaling
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const dates = data.map(d => new Date(d.date).getTime());
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const values = data.map(d => d.usdsat_rate);
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const minDate = Math.min(...dates);
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const maxDate = Math.max(...dates);
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const minValue = Math.log10(Math.min(...values));
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const maxValue = Math.log10(Math.max(...values));
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// Create SVG path
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let pathData = '';
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data.forEach((d, i) => {
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const x = ((new Date(d.date).getTime() - minDate) / (maxDate - minDate)) * width;
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const logY = Math.log10(d.usdsat_rate);
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const y = height - ((logY - minValue) / (maxValue - minValue)) * height;
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if (i === 0) {
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pathData += `M ${x} ${y} `;
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} else {
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pathData += `L ${x} ${y} `;
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}
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});
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// Close path for fill
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pathData += `L ${width} ${height} L 0 ${height} Z`;
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// Create SVG
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const svg = `
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<svg width="100%" height="${height}" viewBox="0 0 ${width} ${height}">
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<path d="${pathData}"
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fill="rgba(255, 153, 0, 0.2)"
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stroke="#FF9900"
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stroke-width="2"
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vector-effect="non-scaling-stroke"/>
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</svg>
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`;
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document.getElementById('svg-chart').innerHTML = svg;
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const end = performance.now();
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const renderTime = end - start;
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// Count DOM nodes (path string length / average coordinate length)
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const pathLength = pathData.length;
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document.getElementById('svg-stats').innerHTML = `
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<div class="stat-line">Data Points: ${data.length.toLocaleString()}</div>
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<div class="stat-line">Render Time: ${formatTime(renderTime)}</div>
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<div class="stat-line">Path Commands: ${(pathData.match(/[ML]/g) || []).length.toLocaleString()}</div>
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<div class="stat-line">Path String Size: ${(pathLength / 1024).toFixed(1)} KB</div>
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<div class="stat-line">Similar to MetricsGraphics approach</div>
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`;
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}
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</script>
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</body>
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</html>
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