Preload Drastically Boosts Linux Performance
Nemilar writes "Preload is a Linux daemon that stores commonly-used libraries and binaries in memory to speed up access times, similar to the Windows Vista SuperFetch function. This article examines Preload and gives some insight into how much performance is gained for its total resource cost, and discusses basic installation and configuration to get you started."
It's also due to linux (and just about everything else including MS Server 2003) correctly supporting the Pentium Pro and later processors. With the 64 bit versions the 2GB ceiling vanishes - but with 32 bit Vista the ceiling is far too close to the floor in my opinion.