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Annotation of src/usr.bin/renice/renice.8, Revision 1.1.1.1

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                     32: .\"     from: @(#)renice.8     6.5 (Berkeley) 3/16/91
                     33: .\"    $Id: renice.8,v 1.2 1993/08/01 07:29:35 mycroft Exp $
                     34: .\"
                     35: .Dd March 16, 1991
                     36: .Dt RENICE 8
                     37: .Os BSD 4
                     38: .Sh NAME
                     39: .Nm renice
                     40: .Nd alter priority of running processes
                     41: .Sh SYNOPSIS
                     42: .Nm renice
                     43: .Ar priority
                     44: .Oo
                     45: .Op Fl p
                     46: .Ar pid ...
                     47: .Oc
                     48: .Oo
                     49: .Op Fl g
                     50: .Ar pgrp ...
                     51: .Oc
                     52: .Oo
                     53: .Op Fl u
                     54: .Ar user ...
                     55: .Oc
                     56: .Sh DESCRIPTION
                     57: .Nm Renice
                     58: alters the
                     59: scheduling priority of one or more running processes.
                     60: The following
                     61: .Ar who
                     62: parameters are interpreted as process ID's, process group
                     63: ID's, or user names.
                     64: .Nm Renice Ns 'ing
                     65: a process group causes all processes in the process group
                     66: to have their scheduling priority altered.
                     67: .Nm Renice Ns 'ing
                     68: a user causes all processes owned by the user to have
                     69: their scheduling priority altered.
                     70: By default, the processes to be affected are specified by
                     71: their process ID's.
                     72: .Pp
                     73: Options supported by
                     74: .Nm renice :
                     75: .Bl -tag -width Ds
                     76: .It Fl g
                     77: Force
                     78: .Ar who
                     79: parameters to be interpreted as process group ID's.
                     80: .It Fl u
                     81: Force the
                     82: .Ar who
                     83: parameters to be interpreted as user names.
                     84: .It Fl p
                     85: Resets the
                     86: .Ar who
                     87: interpretation to be (the default) process ID's.
                     88: .El
                     89: .Pp
                     90: For example,
                     91: .Bd -literal -offset
                     92: renice +1 987 -u daemon root -p 32
                     93: .Ed
                     94: .Pp
                     95: would change the priority of process ID's 987 and 32, and
                     96: all processes owned by users daemon and root.
                     97: .Pp
                     98: Users other than the super-user may only alter the priority of
                     99: processes they own,
                    100: and can only monotonically increase their ``nice value''
                    101: within the range 0 to
                    102: .Dv PRIO_MAX
                    103: (20).
                    104: (This prevents overriding administrative fiats.)
                    105: The super-user
                    106: may alter the priority of any process
                    107: and set the priority to any value in the range
                    108: .Dv PRIO_MIN
                    109: (\-20)
                    110: to
                    111: .Dv PRIO_MAX .
                    112: Useful priorities are:
                    113: 20 (the affected processes will run only when nothing else
                    114: in the system wants to),
                    115: 0 (the ``base'' scheduling priority),
                    116: anything negative (to make things go very fast).
                    117: .Sh FILES
                    118: .Bl -tag -width /etc/passwd -compact
                    119: .It Pa /etc/passwd
                    120: to map user names to user ID's
                    121: .El
                    122: .Sh SEE ALSO
                    123: .Xr getpriority 2 ,
                    124: .Xr setpriority 2
                    125: .Sh BUGS
                    126: Non super-users can not increase scheduling priorities of their own processes,
                    127: even if they were the ones that decreased the priorities in the first place.
                    128: .Sh HISTORY
                    129: The
                    130: .Nm
                    131: command appeared in
                    132: .Bx 4.0 .