[ Thanks to for this link. ]

Here is a compilation of tips on how to optimise Apache on Linux for PHP and CGI programs. Briefly covers benchmarking and monitoring your Web server, then dives into the details.

http://php.weblogs.com/tuning_apache_unix

"General rule of thumb for hardware upgrades: For PHP scripts, the main bottleneck is the CPU. For static HTML/images, the bottleneck is RAM and the network. A slow 400 Mhz Pentium can saturate a T3 line (that's 45 Mbps) with static HTML pages."

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