Do you want your Linux box to go faster? Throw it out the window!!!
No, seriously …..
Here is a trick that is already implemented automatically in some Linux distros. It is also found in Macs and Windows, but the Windows version of it is stupid.
The idea is to pre-load certain commonly used software into memory. This may affect your performance a great deal if you use a handfull of programs all the time and you have enough memory. For Linux “enough memory” is probably not very much for most purposes.
Here’s a post giving some instructions. Let us know how it goes.