Tag Archives: zend server memory usage

WordPress: Zend Server CE vs. cPanel & Apache stacks

I recently decided to install Zend Server CE on my machine to use as a local development environment.  I chose the PHP 5.3 installation so I could update my PHP code to fit the new version.  I was intrigued and excited to find that WordPress used a mere 2 MB of memory compared with 12-13 MB on my production installation.

Zend Server CE cPanel/Other Stacks
Memory usage 1.5-2 MB 12-14 MB
OS Windows XP
Windows Server 2003
Linux
Windows XP
Windows Server 2003
Installation PHP 5.2.10/5.3
MySQL
Apache 2.2.12
(Full)
PHP 5.2.10
MySQL
Apache 2.2.xx
WordPress Version 2.8.4 2.8.4
WordPress Plugins Same Same

My primary testing was done on Windows Server 2003. Before installing Zend Server CE, WordPress was taking up what I would call an average amount of memory, 12 MB. After installing Zend Server CE with PHP 5.2.10, I found that peak memory usage went down to around 4 MB. After I found PHP 5.2.10 worked, I upgraded to 5.3, which resulted in yet another performance increase, bringing us to 2 MB peak memory usage.

WordPress Memory Usage on Zend Server CE
WordPress Memory Usage on Zend Server CE
WordPress Memory Usage on cPanel/WHM
WordPress Memory Usage on cPanel/WHM

Thoughts: I can’t find anything drastically different about the two installations, but I could be missing something. If anyone can solve this mystery, please comment!