Improve database access speeds in pacman on Arch
Pacman stores all package information in a collection of small files, one for each package. Improving database access speeds reduces the time taken in database-related tasks, e.g. searching packages and resolving package dependencies.
The safest and easiest method is to run
pacman-optimize && sync
as root. This will attempt to put all the small files together in one (physical) location on the hard disk so that the hard disk head does not have to move so much when accessing all the packages. This method is safe, but is not for-sure. It depends on your filesystem, disk usage and empty space fragmentation.
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