I started recently learning Dart for server side as I like its syntax and aot concept. I wrote a simple script in both language and seems PHP way faster than Dart generated AOT executable.

Dart Code

import "dart:io";

main() {
  var i = 0;
  while (true) {
    stdout.write("i = $i\n");
    if (i == 1000000) {
      break
    }
    i++;
  }
}

Compiled with: dart compile exe file-name.dart

PHP

<?php
$i = 0;
while (true) {
  print("i = $i\n");
  if ($i === 1000000) {
     break;
  }
  $i++;

php file-name.php

Performance

Performance-Image Imgur

My question is why PHP is faster by ~50% than Dart? Even I tried to run the dart first without measure-command until I see dart app prints to the screen, then I run php, php still go way faster until it pass the dart printed i value

I am not sure if I did something wrong, as I know that AOT compiles to native code and I know this related to IO not computation which might has different impact on the benchmark.

And another question that I could not get the answer in dart.dev website. When compiling dart code to AOT is it going to compile the code to native cpu instructions for instance if I say

i = i + 1;

will be on x86 or similar

add i, 1