On Tue, Jul 07, 2020 at 06:34:05PM -0700, Felix Lechner wrote: > Hi, > > > access files in disk order to increase performance > > What was the speedup in man-db and dpkg, please?
~70% speedup in reinstalling a simple package using dpkg (27 seconds to 8 seconds): https://git.dpkg.org/cgit/dpkg/dpkg.git/commit/?id=8e31b0f0fb6b14e605407b824f4e2f1b0c12bab6 ~69% speedup in "mandb -c" (104 seconds to 32 seconds), and ~49% speedup in "man -K" (74 seconds to 38 seconds): https://git.savannah.gnu.org/cgit/man-db.git/commit/?id=daee555135fbdca3c084a06dd3e1156f9ede24b8 This was all on rotational disks. I expect SSDs would change things a lot, though I don't think this sort of thing *hurts* on SSDs. -- Colin Watson (he/him) [cjwat...@debian.org]
