FastAgi PHP server

I’m using phpagi to control callflow in my box. Phpagi uses xinetd to serve scripts, but xinetd do not have control of script execution. So there is no way to balance an agi generated load and control scripts on a thread level. My question: is there any other than xinted way to serve agi scripts over TCP/IP. Maybe there is some specialized php-application server that can handle agi requests. Any ideas?

Regards, Maciek