Package: gnome-shell Version: 3.14.2-3+b1 I recently replaced an arch linux installation with debian jessie; after installing gnome, I noticed that ram usage was a bit higher than I was accustomed to. The biggest difference seemed to be the overhead from evolution-data-server, which is pretty high.
This package is optional on arch, so I rebuilt the .deb with moving this to a Recommends: dep; after removing e-d-s, ram (and quite a few packages!) dropped away. The functionality that goes away is mostly related to calender events (and making clock pop-up more complex). The related arch linux bug: https://bugs.archlinux.org/task/37927
