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Annotation of 43BSDTahoe/man/man8/renice.8, revision 1.1.1.1

1.1       root        1: .\" Copyright (c) 1980 Regents of the University of California.
                      2: .\" All rights reserved.  The Berkeley software License Agreement
                      3: .\" specifies the terms and conditions for redistribution.
                      4: .\"
                      5: .\"    @(#)renice.8    6.2 (Berkeley) 5/19/86
                      6: .\"
                      7: .TH RENICE 8 "May 19, 1986"
                      8: .UC 4
                      9: .SH NAME
                     10: renice \- alter priority of running processes
                     11: .SH SYNOPSIS
                     12: .B /etc/renice
                     13: priority [ [
                     14: .B \-p
                     15: ] pid ... ] [ [
                     16: .B \-g
                     17: ] pgrp ... ] [ [
                     18: .B \-u
                     19: ] user ... ]
                     20: .SH DESCRIPTION
                     21: .I Renice
                     22: alters the 
                     23: scheduling priority of one or more running processes.
                     24: The
                     25: .I who
                     26: parameters are interpreted as process ID's, process group
                     27: ID's, or user names.
                     28: .IR Renice 'ing
                     29: a process group causes all processes in the process group
                     30: to have their scheduling priority altered.  
                     31: .IR Renice 'ing
                     32: a user causes all processes owned by the user to have
                     33: their scheduling priority altered.
                     34: By default, the processes to be affected are specified by
                     35: their process ID's.  To force 
                     36: .I who
                     37: parameters to be interpreted as process group ID's, a
                     38: .B \-g 
                     39: may be specified.  To force the
                     40: .I who
                     41: parameters to be interpreted as user names, a
                     42: .B \-u
                     43: may be given.  Supplying
                     44: .B \-p
                     45: will reset 
                     46: .I who
                     47: interpretation to be (the default) process ID's.
                     48: For example,
                     49: .sp
                     50:        /etc/renice +1 987 -u daemon root -p 32 
                     51: .sp
                     52: would change the priority of process ID's 987 and 32, and
                     53: all processes owned by users daemon and root.
                     54: .PP
                     55: Users other than the super-user may only alter the priority of
                     56: processes they own,
                     57: and can only monotonically increase their ``nice value''
                     58: within the range 0 to PRIO_MAX (20).
                     59: (This prevents overriding administrative fiats.)
                     60: The super-user
                     61: may alter the priority of any process
                     62: and set the priority to any value in the range PRIO_MIN (\-20)
                     63: to PRIO_MAX.
                     64: Useful priorities are:
                     65: 20 (the affected processes will run only when nothing else
                     66: in the system wants to),
                     67: 0 (the ``base'' scheduling priority),
                     68: anything negative (to make things go very fast).
                     69: .SH FILES
                     70: /etc/passwd    to map user names to user ID's
                     71: .SH SEE ALSO
                     72: getpriority(2), setpriority(2)
                     73: .SH BUGS
                     74: Non super-users can not increase scheduling priorities of their own processes,
                     75: even if they were the ones that decreased the priorities in the first place.

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