Sreadahead is a daemon that reads data sequential by use from disk. Sreadahead does this by retrieving the read order (in timestamp format) from an actual boot sequence and storing a list of data that was read during that boot sequence in a flat database. On the next boot this file can be used to load all the data described in the database into memory and in order of use. Sreadahead requires a kernel patch and (currently) only works on ext3, allthough it is possible to develop support other filesystems.