RENICE(8)               OpenBSD System Manager's Manual              RENICE(8)

NAME
     renice - alter priority of running processes



SYNOPSIS
     renice priority [[-p] pid ...] [[-g] pgrp ...] [[-u] user ...]

DESCRIPTION
     Renice alters the scheduling priority (an integer) of one or more running
     processes.  The following who parameters (pid, pgrp and user) are inter-
     preted as process ID's, process group ID's, or user names.  Renice'ing a
     process group causes all processes in the process group to have their
     scheduling priority altered.  Renice'ing a user causes all processes
     owned by the user to have their scheduling priority altered.  By default,
     the processes to be affected are specified by their process ID's.

     Options supported by renice:

     -g      Force who parameters to be interpreted as process group ID's.

     -u      Force the who parameters to be interpreted as user names.

     -p      Resets the who interpretation to be (the default) process ID's.

     For example,

     renice +1 987 -u daemon root -p 32

     would change the priority of process ID's 987 and 32, and all processes
     owned by users daemon and root.

     Users other than the super-user may only alter the priority of processes
     they own, and can only monotonically increase their ``nice value'' within
     the range 0 to PRIO_MAX (20).  (This prevents overriding administrative
     fiats.)  The super-user may alter the priority of any process and set the
     priority to any value in the range PRIO_MIN (-20) to PRIO_MAX. Useful
     priorities are: 20 (the affected processes will run only when nothing
     else in the system wants to), 0 (the ``base'' scheduling priority), any-
     thing negative (to make things go very fast).

FILES
     /etc/passwd  to map user names to user ID's

SEE ALSO
     nice(1),  getpriority(2),  setpriority(2)

BUGS
     Non super-users can not increase scheduling priorities of their own pro-
     cesses, even if they were the ones that decreased the priorities in the
     first place.

HISTORY
     The renice command appeared in 4.0BSD.

4th Berkeley Distribution       March 16, 1991                               1