Du scheinst nicht ganz verstanden zu haben, was die TIME-Spalte bei ps aussagt.
Aus
man ps:
Code:
By default, ps selects all processes with the same effective user ID (EUID) as
the curent user and associated with the same terminal as the invoker. It
displays the process ID (PID), the terminal associated with the process (TTY),
the cumulated CPU time in [dd-]hh:mm:ss format (TIME), and the executable name
(CMD). Output is unsorted by default.