I'm looking for a feature that will allow me to see a current status of all php scripts running and showing me how much memory/io/cpu they are consuming at this point.
I have a wordpress website that has a lot of plugins installed in it, and I'm currently having performance issues that I suspect are related to one of the many plugins.
I'm looking for a quick way to check which script/plugin is consuming the most IO/memory/cpu.
I did up a quick PHP script (very dodgy parsing on it ,but it works, but anyone wanting to make it neater please work away)
<?php
echo (" <h2>Processes : </h2> <br> <center>");
$cmd = `/usr/bin/top -b -n1 `;
//// parse the page //////////////////
$cmd=str_replace(" "," ",$cmd);
$cmd=str_replace(" "," ",$cmd);
$cmd=str_replace(" "," ",$cmd);
$cmd=str_replace(" "," ",$cmd);
$cmd=str_replace(" "," ",$cmd);
$cmd=str_replace(" ","</td><td>",$cmd);
$cmd=str_replace("\n","</td></tr><tr><td>",$cmd);
$cmd=str_replace("<tr><td></td><td>","<tr><td>",$cmd);
$cmd=str_replace("<tr><td>PID","<tr><td COLSPAN=10 height=50></td></tr><tr bgcolor=e0e0e0><td>PID",$cmd);
///////////////////////////////////////
echo '<table width=900 align=middle border=0><tr><td>';
echo $cmd;
echo '</td></tr></table>';
?>
You can install the Xdebug extension and use its profiling functions. The profile will show you how much time is spent in each function so you'll probably be able to find the WP plugin that consumes so much time.
I'm afraid there is no such command or utility that works 'natively' within PHP.
Since you have tagged Apache, please have a look to Apache's Status module: http://httpd.apache.org/docs/2.0/mod/mod_status.html
The output goes like http://www.apache.org/server-status
This of course requires you to have root access to your webserver, but I believe it shows helpful informations. This can show you, which URLs are taking most CPU time. To investigate further you will need a profiler like (mentioned) Xdebug.
