nice round number + argv[1]

quote: 
@nikic
I don't think there's any point in preserving the exact previous size. Let's make this a nice round number like 2048. Could also make it $argv[1] ?? 2048 to allow passing a different size :)

Author: divinity76

ext/hash/bench.php

@@ -3,8 +3,7 @@
 
 error_reporting(E_ALL);
 
-// 2240 comes from the fact that it used to be file_get_contents(__FILE__);
-$data = str_repeat("\x00", 2240);
+$data = str_repeat("\x00", (int) ($argv[1] ?? (2 * 1024)));
 $time = array();
 foreach (hash_algos() as $algo) {
     $time[$algo] = 0;