Showing users the page rendertime
From Joomla! Documentation
1. Open your template index.php
2. Put the following code next to
<?php
function getmicrotime() {
list($usec, $sec) = explode(" ", microtime());
return ((float)$usec + (float)$sec); }
$starttime = getmicrotime();
?>
3. Now put the following code near to the bottom of your site (e.g. right before):
<?php
$endtime = getmicrotime();
echo"This site was generated in<br />", number_format($endtime-$starttime, 4, ",", "."), " seconds.";
?>