Where be able to measure query running time in v2.4?

[tgely]

DbStatment.php

            $start = microtime(true);
            $this->is_error = !parent::execute($input_parameters);
            d($this->queryString . '<br />Time: ' . sprintf('%f', (microtime(true)-$start)));

where d() is a private debug function:

// display object as string and if true display object as text
function d($v, $text = false) { echo '<pre>Data: '; print_r($v, $text); echo '</pre>'; }

This is a half solution and has no display effect from protected Db.php.