[ Thanks to Adam
Williamson for this link. ]
“Before continuing, boot time covers three different
aspects (and timing) :
– full boot time : from kernel startup to text login being
available
– percieved boot time : from kernel startup to graphical login
being available (you’ll understand why I separate both later 😉
– graphical desktop startup time : from graphical login to desktop
environment up and running (all apps from the session running and
correctly rendered)”