Tuning Windows Server 2008 for PHP

Windows Server 2008 and IIS 7.0 include features that enable PHP to run more efficiently than it did on previous versions of Windows Server. This is important because many a Web site uses PHP for dynamic content.

Tom Hawthorn and Karthik Mahesh from the Windows Server Performance Team have an article describing how to tune Windows Server 2008, IIS 7.0, and PHP for environments with a single site and high concurrent user traffic.

Here are a few of the important points:

• Tuning a Windows 2008 machine for PHP performance in enterprise environments is all about increasing the default concurrency limits.  
• If you try out some of the tunings in the article make sure you test the effects of the changes in a controlled environment before deploying them to your front line servers.
  
• If you don’t have enough memory or your CPU is already fully utilized, don’t increase the concurrency limits.