terrible wordpress plugin that is super mean to the filesystem on purpose

badfs.php

<?php
/*
Plugin Name: BadFS
Plugin URI: http://wpengine.com/
Description: Be intentionally terrible to the filesystem to test storage performance.
Version: 1.0.0
Author: Daniel Bennett
Author URI: http://wpengine.com/
*/

// $fs_traversals = 0;
function get_files_and_directories(){
        // global $fs_traversals;
        $items = array();
        $stupid_files_dir = plugin_dir_path(__FILE__) . 'stupidfiles';
        $directory = new RecursiveDirectoryIterator($stupid_files_dir);
        $iterator = new RecursiveIteratorIterator($directory);
        foreach ($iterator as $item){
                // $fs_traversals++;
                // skip */..
                if ( stripos(strrev($item), '..') === 0 ){ continue; }
                $items[] = $item->getPathname();
        }
        return $items;
}

function get_php_files(){
        $files = array();
        foreach (get_files_and_directories() as $f) {
                if ( stripos($f, '.php') > 0 ){
                        $files[] = $f;
                }
        }
        return $files;
}

function find_php_file($filename){
        foreach (get_files_and_directories() as $f) {
                if ( strpos($f, $filename) ){
                        return $f;
                }
        }
}

try {
        foreach (get_php_files() as $f){
                $f = array_slice(explode('/', $f), -1)[0];
                include(find_php_file($f));
        }
        // global $fs_traversals;
        // error_log("Looked at $fs_traversals files and directories.");
}
catch(Exception $e) {
        error_log("installing badfs plugin?");
}

function badfs_activate(){
$stupid_files_dir = plugin_dir_path(__FILE__) . 'stupidfiles';
        if ( file_exists($stupid_files_dir) ) {
                return;
        }
        for ($x=0; $x<=25; $x++) {
                mkdir("$stupid_files_dir/$x/$x/$x/$x/$x/$x", 0775, true);
        }
        $x = 0;
        // this will only get directories, since that's all that exists at the moment.
        foreach (get_files_and_directories() as $dir) {
                touch("$dir/$x.php");
                $x++;
        }
}
register_activation_hook(__FILE__, 'badfs_activate');