What were you trying to find out with the debugger? If you want to know where the time is being spent, Apache::DProf would be better. When I use the debugger, I usually am looking for something specific, so I use it interactively. You can do that with Apache::DB if you run httpd with -X.
I have to locate several problems with the code: circular references between obects, places where destructor should be called but it is not called, etc. Is there a better way to do it?
And thank you for pointing me to Apache::DProf module!