Intel 7xx Servers, 170 Servers, AS/400 RISC Server manual PHP System Sizing

OS / DB	i 6.1 / DB2		i 6.1/MySQL 5.0
Zend Version	V2.5.2	V2.5.2/Platform	V2.5.2	V2.5.2/Platform
Connect	db2_pconnect	db2_pconnect	mysqli	mysqli
OPM	5041	6795	3974	4610
RT (ms)	176	129	224	191
Total CPU	98	95	98	96
CPU - Zend/AP	62	44	49	31
CPU - DB	31	46	47	62

Conclusions:

1.In both cases above, the overall system capacity improved significantly when using Zend Platform, by about 15-35% for this workload. With each order consisting of 10 web requests, processing 6795 orders per minute translates into about 1132 transactions per second.

2.Zend Platform will reduce the amount of processing in the Zend Core component since the PHP code is compiled once and reused. In both of the above cases, the amount of processing done in Zend Core on a per transaction basis was dramatically reduced by a factor of about 1.9X.

PHP System Sizing

The IBM Systems Workload Estimator (a.k.a., the Estimator or WLE) is a web-based sizing tool for IBM Power Systems, System i, System p, and System x. You can use this tool to size a new system, to size an upgrade to an existing system, or to size a consolidation of several systems. The Estimator allows measurement input to best reflect your current workload and provides a variety of built-in workloads to reflect your emerging application requirements.

Currently, a new built-in workload is being developed to allow the sizing of PHP workloads on Power Systems running IBM i. This built-in is expected to be available November 2008. To access WLE use the following URL:

http://www.ibm.com/eserver/iseries/support/estimator

IBM i 6.1 Performance Capabilities Reference - January/April/October 2008
© Copyright IBM Corp. 2008	Chapter 6 - Web Server and WebSphere	92