Monitoring resources used by PH

[knave]

I'm looking for a way to monitor the system resources (CPU, memory, Disk I/O, etc) used by the PHP engine on a linux machine. I can't monitor it by the usual means (top, etc),

since it runs as part of the apache process(es).

 

Does anyone know of software that can do this? For example, perhaps some kind of apache module or zend utility? I couldn't find anything on php.net, and google has failed me as well, turning up nothing useful for "php resource monitor".

 

Thanks, any help would be appreciated.