I doubt this is by any means the most important performance issue that Debian package installation faces.  It looks like the speedup discussed here is in the no-update case, which is nice, but not the only case.  I stopped using Debian at home several years ago, and one of the main reasons was the incredible slowness of groping around in GNOME&#x27;s moronic XML settings database during every update.  Upgrading schemas and whatnot.  I still use Debian at work and I note that it is still prone to building and rebuilding initrd during an update when it should only be built once.  On a recent update initrd was built for the kernel that was being _uninstalled_ which was awesome.