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I'm trying to figure out exactly what's going on that kicks CPU usage in random httpd workers so high but I'm having a little hard of a time figuring out what PHP page is being requested so that I can try to figure out why it's chewing up CPU. If PHP were done as regular (as opposed to Fast) CGI I could look at the process list, but we're using mod_php.

Is there a way to get PHP 5.3 to report performance statistics for currently running scripts? This may also be relevant if we decide to eventually go the php-fpm route.

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If you enable mod_status and turn on ExtendedStatus, it will display the request being handled by each worker.

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This is exactly what I was needing, ty. –  Joel Davis Mar 28 at 18:25
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First of all I am not sure if you can do that with normal php but you can use php-fpm to show you a status page in this link you can see how to do it: https://rtcamp.com/tutorials/php/fpm-status-page/

Second you can enable slowlog in php-fpm with this you can see which script are running so slowly. here's an exaple to how to do it: https://rtcamp.com/tutorials/php/fpm-slow-log/

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