Subsystem and Apache Setup for Zend Server 6

Hi folks -

Implementing a PHP solution on an E6C system. Lots of memory, lots of disk,
system isn't overworked at this point. V7R1. System value QPFRADJ is set to
3 (Automatic Adjustment). Default Zend Server 6 installation uses *BASE
memory pool.

Zend Server performance is lousy. Much slower page load and data retrieval
than the same code on the development system. Lots of Toolkit and stored
procedure use.

I'm thinking that the first step would be to establish a fixed memory pool
just for Zend Server, set it to *NOMAX for threads, and see how it runs.

What tuning recommendations, for both Apache and Zend, do you folks
suggest? Any good documentation on this?

Thanks!