156 lines
4.4 KiB
Groff
156 lines
4.4 KiB
Groff
.\" $NetBSD: renice.8,v 1.10 2001/12/08 19:11:33 wiz Exp $
|
|
.\"
|
|
.\" Copyright (c) 1983, 1991, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" from: @(#)renice.8 8.1 (Berkeley) 6/9/93
|
|
.\" $NetBSD: renice.8,v 1.10 2001/12/08 19:11:33 wiz Exp $
|
|
.\"
|
|
.Dd June 9, 1993
|
|
.Dt RENICE 8
|
|
.Os
|
|
.Sh NAME
|
|
.Nm renice
|
|
.Nd alter priority of running processes
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Ar priority
|
|
.Oo
|
|
.Op Fl p
|
|
.Ar pid ...
|
|
.Oc
|
|
.Oo
|
|
.Fl g
|
|
.Ar pgrp ...
|
|
.Oc
|
|
.Oo
|
|
.Fl u
|
|
.Ar user ...
|
|
.Oc
|
|
.Nm ""
|
|
.Fl n
|
|
.Ar increment
|
|
.Oo
|
|
.Op Fl p
|
|
.Ar pid ...
|
|
.Oc
|
|
.Oo
|
|
.Fl g
|
|
.Ar pgrp ...
|
|
.Oc
|
|
.Oo
|
|
.Fl u
|
|
.Ar user ...
|
|
.Oc
|
|
.Sh DESCRIPTION
|
|
.Nm
|
|
alters the
|
|
scheduling priority of one or more running processes.
|
|
The following
|
|
.Ar who
|
|
parameters are interpreted as process ID's, process group
|
|
ID's, or user names.
|
|
.Nm "" Ns 'ing
|
|
a process group causes all processes in the process group
|
|
to have their scheduling priority altered.
|
|
.Nm "" Ns '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.
|
|
.Pp
|
|
Options supported by
|
|
.Nm "" :
|
|
.Bl -tag -width Ds
|
|
.It Fl g
|
|
Force
|
|
.Ar who
|
|
parameters to be interpreted as process group ID's.
|
|
.It Fl n
|
|
Instead of changing the specified processes to the given priority,
|
|
interpret the following argument as an increment to be applied to
|
|
the current priority of each process.
|
|
.It Fl u
|
|
Force the
|
|
.Ar who
|
|
parameters to be interpreted as user names.
|
|
.It Fl p
|
|
Resets the
|
|
.Ar who
|
|
interpretation to be (the default) process ID's.
|
|
.El
|
|
.Pp
|
|
For example,
|
|
.Bd -literal -offset
|
|
renice +1 987 -u daemon root -p 32
|
|
.Ed
|
|
.Pp
|
|
would change the priority of process ID's 987 and 32, and
|
|
all processes owned by users daemon and root.
|
|
.Pp
|
|
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
|
|
.Dv 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
|
|
.Dv PRIO_MIN
|
|
(\-20)
|
|
to
|
|
.Dv PRIO_MAX .
|
|
.Pp
|
|
Useful priorities are:
|
|
0, the ``base'' scheduling priority;
|
|
20, the affected processes will run only when nothing at the base priority
|
|
wants to;
|
|
anything negative, the processes will receive a scheduling preference.
|
|
.Sh FILES
|
|
.Bl -tag -width /etc/passwd -compact
|
|
.It Pa /etc/passwd
|
|
to map user names to user ID's
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr nice 1 ,
|
|
.Xr getpriority 2 ,
|
|
.Xr setpriority 2
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
command appeared in
|
|
.Bx 4.0 .
|
|
.Sh BUGS
|
|
Non super-users can not increase scheduling priorities of their own processes,
|
|
even if they were the ones that decreased the priorities in the first place.
|