Run results for: repeated Math.random() vs crypto.getRandomValues()

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Browser: Chrome 130

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

crypto.getRandomValues()

27K/s

Math.random()

172/s

View exact numbers

Test name	Executions per second
✓ crypto.getRandomValues()	26,529 Ops/sec
Math.random()	172 Ops/sec

Script Preparation code:

var v = new Uint32Array(16384);

Tests: