beta2

[mk01]

it is a difference running background service and running a scheduled task. it's not taking any resources - until it is running - apt update 2-5mins once a day.

if you still wan't to completely disable, create /etc/apt/apt.conf.d/99-personal (99 will be loaded at the end so effectively changing all previous loaded settings (from files 00-98)

Code:

APT::Periodic::Enable "0";

even started task doesn't mean it is running. 99.9% of all processes are sleeping most of the time. you can check that with "top" for example.
if you hit 'T', you get process list sorted by total time spend running. and check, what processes are those taking any cpu time.

if you are looking for some non-essential services to really turn off, look for lirc (non-CEC remotes), dbus (system message bus), avahi-daemon (zeroconf - airplay).

then you can disable "restore-home" service as discussed before, samba (although it is started via inetd now (ad-hock)). sshd the same case (by default not running as sshd process), change thread_pool=3 in cmdline.txt to thread_pool=1 (this will change number of btrfs worker threads - eating some memory). there is no much else. if you don't have nfs/nfs4 is fstab, xbian will even not start nfs-* services until needed. usbmount what you are disabling is not a service as well. it's started by udev on kernel event (disk add/change).

if you find something worth looking at, let me know.

add-ons / python inside XBMC is the biggest consumer of resources. disable all non-needed add-ons. this will bring visible change.