<?php

$iterations = 5000;

require_once __DIR__ . '/core/vendor/autoload.php';
require_once __DIR__ . '/core/includes/bootstrap.inc';

$start_memory = memory_get_usage();
for ($i = 0; $i < 1000; $i++) {
  $defs[] = \Drupal\Core\TypedData\DataDefinition2::create('string')
    ->setLabel('Text value');
}
echo (memory_get_usage() - $start_memory) / 1024 . " kBytes \n";


$s = serialize($defs);

timer_start('test');
for ($i = 0; $i < $iterations; $i++) {
  unserialize($s);
}


timer_stop('test');
echo timer_read('test')."ms for $iterations runs. \n";
echo (timer_read('test') / $iterations) ."ms per run \n";