.\" Copyright (c) 2017 Edward Tomasz Napierala
.\" All rights reserved.
.\"
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" $FreeBSD: releng/12.2/share/man/man4/rctl.4 319076 2017-05-28 17:25:47Z trasz $
.Dd May 28, 2017
.Dt RCTL 4
.Os
.Sh NAME
.Nm rctl
.Nd resource limits
.Sh SYNOPSIS
To compile this driver into the kernel,
place the following line in the
kernel configuration file:
.Bd -ragged -offset indent
.Cd "options RACCT"
.Cd "options RCTL"
.Ed
.Sh DESCRIPTION
The
.Nm
subsystem provides a flexible resource limits mechanism,
controlled by a set of rules that can be added or removed at runtime
using the
.Xr rctl 8
management utility.
.Sh LOADER TUNABLES
Tunables can be set at the
.Xr loader 8
prompt, or
.Xr loader.conf 5 .
.Bl -tag -width indent
.It Va kern.racct.enable: No 1
Enable
.Nm .
This defaults to 1, unless
.Cd "options RACCT_DEFAULT_TO_DISABLED"
is set in the kernel configuration file.
.El
.Sh SEE ALSO
.Xr rctl.conf 5 ,
.Xr rctl 8
.Sh HISTORY
The
.Nm
subsystem first appeared in
.Fx 9.0 .
.Sh AUTHORS
The
.Nm
subsystem was developed by
.An Edward Tomasz Napierala Aq Mt trasz@FreeBSD.org
under sponsorship from the FreeBSD Foundation.