Preload is an adaptive readahead daemon. It monitors applications that users run, and by analyzing this data, predicts what applications users might run, and fetches those binaries and their dependencies into memory for faster startup times.
Preload will not make your system boot faster, but it obviously speed up your application launching time, especially for large program such as GIMP, LibreOffice, etc.
If you have a reasonably lager RAM & use Ubuntu, and looking for a way to speed up the application loading times, without sacrificing much, then yes, ‘preload’ is worth trying.
Preload is available in Ubuntu repositories by default. You don’t have to something special, just click the link below to bring up Ubuntu Software Center and click the install button.
Thats it. Preload will run silently in the background. If you want to further tweak Preload, conf file is available at /etc/preload.conf.