Sun Microsystems Sun Workstation 100U System Manager's Manual page 229

RENICE(8 )
MAINTENANCE COM:MANDS RENICE(8)
NAME
renice - alter priority or running processes
SYNOPSIS
/etc/renlce (-B) ( -u )
priority who ...
DESCRIPTION
FILES
R enice
can be used to alter the scheduling priority or one or more running processes. By derault,
the processes
to
be affected are specified by their process id's. If the
-g
option is specified, the
who parameters are interpreted as process groups and all the processes in the specified process
groups have their scheduling priority altered. Ir the -u option is indicated, the who parameters
ar~
interpreted as user names and all process owned by the user are affected.
U5crs other than the super-user may only alter the priority or processes they own, and can only
monotonically incre35e their "nice value" within the range
0
to PRIO_MIN
(20).
(This prevents
overriding administrative fiats.) The super .. user may alter the priority or any process and set the
priority to
any value in the range PRIO_MAX (-20) to PRIO_MIN. Userul priorities are: 19 (the
affected processes will run only when nothing else in the system wants to),
0
(the "base" schedul ..
ing priority), anything negative (to make things go very rast).
If no
who parameter is specified, the current process (alternatively, process group or user) is used.
/etc/passwd
SEE ALSO
getpriority(2)
to ma.p user names
to
user id's
BUGS
74
If you make the priority very negative, then the process cannot be interrupted. To regain control
you make the priority greater than zero. Non super-users can not increase scheduling priorities or
their own processes, even ir they were the ones that decreased the priorities in the first place.
Last change: 4 March 1983
Sun Release 1.1