3 ms·

Surely dd would be faster than that.

• CodesInChaos 6y ago
  /dev/random is super slow and even /dev/urandom is surprisingly slow. If you care about performance, something like round reduced AES or ChaCha would be a decent choice.
  • IcePic 6y ago
    OpenBSD /dev/(u)random uses ChaCha20 and gives me a few hundred MB/s on recent hw.