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Comment by clarkmoody

Another benchmark:

time openssl sha256 /tmp/bigfile

  real  0m28.160s
  user  0m27.750s
  sys   0m0.272s

time shasum -a 256 /tmp/bigfile

  real  0m6.146s
  user  0m5.407s
  sys   0m0.560s

time b2sum /tmp/bigfile

  real  0m1.732s
  user  0m1.450s
  sys   0m0.244s

time b3sum /tmp/bigfile

  real  0m0.212s
  user  0m0.996s
  sys   0m0.379s

TIL OpenSSL sha256 invocation is really slow compared to the shasum program. Also BLAKE3 is really fast.

Edit: bigfile is 1GB of /dev/random

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