Nicer than nice!

[Axel Dunkel]

Is there a possibility to change the priority of a process more than a
'nice -19' would do? I would like be able to start programs in background
that get cpu time only if there is nearly nothing 'better' to do, so that
they don't cosume cpu time while there are other processes (apart from
init etc. of course) running. (for UNIX Sys V, R3.2).

Thanx for answers!
Axel Dunkel (ad at cat.UUCP, ...!unido!cat!ad)