64 lines
No EOL
2 KiB
HTML
64 lines
No EOL
2 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Massive memory allocation test</title>
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</head>
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<h1>
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<h1>Massive memory allocation test</h1>
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<p>
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Allocates 16-MiB ArrayBuffers until something stops it.
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May crash your system or make it sluggish.
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</p>
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<div id="status">Ready to start.</div>
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<div><button id="start">Start</button></div>
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<script async>
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function el(id) {
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return document.getElementById(id);
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}
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const status = el('status');
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const button = el('start');
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let running = false;
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let count = 0;
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// Give us 16 megs of randomized memory
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// to defeat compression.
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const mib = 1024 * 1024;
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const chunk = 16 * mib;
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const block = new Uint8Array(chunk);
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for (let i = 0; i < block.length; i++) {
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block[i] = Math.round(Math.random() * 255);
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}
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let blocks = [];
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function alloc() {
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blocks.push(block.slice());
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count++;
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status.textContent = `${count * chunk / mib} MiB allocated`;
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}
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let timeout = null;
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function schedule() {
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timeout = setTimeout(() => {
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alloc();
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schedule();
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});
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}
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function cancel() {
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clearTimeout(timeout);
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timeout = null;
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}
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button.addEventListener('click', function(event) {
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if (running) {
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button.textContent = 'Start';
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running = false;
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cancel();
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} else {
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button.textContent = 'Stop';
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running = true;
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schedule();
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}
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});
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</script>
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</body>
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</html> |