TITLE    : Howto to lower the "nice" level of a user.
OS LEVEL : AIX 
DATE     : 16/03/99
VERSION  : 1.0

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The nice command lets you run a command at a priority lower than the
command's normal priority.

The nice value can range from 0 to 39, with 39 being the lowest priority.
For example, if a command normally runs at a priority of 20, specifying
an increment of 5 runs the command at a lower priority, 25, and the
command runs slower.

A standard user usually has a nice level of 20 so you are able to reduce 
the nice level of a user from 20 to 39 (0 to -19).

Edit the /etc/passwd file entry for the user, and run the users
shell program at a lower nice level. In the example below the user
johnr's shell will at a nice level of 39 :-

Before :-

johnr:!:200:1:John Roebuck:/home/johnr:/usr/bin/ksh


After :-
 
johnr:!:200:1:John Roebuck:/home/johnr: /bin/nice -19 /usr/bin/ksh

All commands run from within the shell will also run at the reduced
nice level of 39.

You can use the following command to check the nice levels of users
programs :-

             ps -o "%n %u %p %P %x %y %t %c %a"