You can use the priocntl -l command to display process scheduling classes and priority ranges. The following example shows output from the priocntl -l command.
$ priocntl -l
CONFIGURED CLASSES
==================
SYS (System Class)
TS (Time Sharing)
Configured TS User Priority Range: -60 through 60
FX (Fixed priority)
Configured FX User Priority Range: 0 through 60
IA (Interactive)
Configured IA User Priority Range: -60 through 60