benchmark.mjs

import * as crypto from 'crypto';

const key = crypto.generateKeyPairSync('rsa', {
  modulusLength: 2048,
});

const input = crypto.randomBytes(128);

function run(iterations) {
  for (let i = 0; i < iterations; i++) {
    crypto.createSign('RSA-SHA256').update(input).sign(key.privateKey);
  }

}

const start = process.hrtime.bigint();
run(1000);
const end = process.hrtime.bigint();
console.log(`took ${Number(end - start)/1000000} ms`);

gistfile1.txt

# ami-0f10e11691c9ab660 (us-east-2) on a c6g.large

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.37.2/install.sh | bash
source .nvm/nvm.sh
nvm install 15

# compiling node 15 from source did not make a difference
# same results with NodeJS 14

node benchmark.mjs

# output on a c6g.large
# took 3411.936128 ms

# output on a c5.large
# took 606.871429 ms

# output on a M1 Apple MacBook Pro
# took 577.953708 ms