pacman-memcache

Read whole Pacman database which pushes it into the memory cache.

Read whole Pacman database which pushes it into the memory cache

Pacman is Linux package manager. It is used by Arch Linux. It's database is rather slow because it contains thousands of little files, which takes an enormous time to process.

The easiest way to speed up operations on database is force all those files into memory cache. This is the purpose of this program: it reads whole package database, where it will reside until kernel decides to remove this files from cache.

Three subsequent runs of pacman:

pacman -Ss foo  0,37s user 0,66s system 2% cpu 41,459 total
pacman -Ss foo  0,16s user 0,08s system 98% cpu 0,238 total
pacman -Ss foo  0,15s user 0,08s system 97% cpu 0,237 total

Using pacman-memcache:

pacman-memcache  1,11s user 0,53s system 6% cpu 26,312 total
pacman -Ss foo  0,15s user 0,09s system 19% cpu 1,260 total
pacman -Ss foo  0,15s user 0,08s system 97% cpu 0,235 total