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fbbd9655e5
Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann <jschauma@stevens.edu> Pull Request: https://github.com/freebsd/freebsd/pull/96
101 lines
2.9 KiB
Groff
101 lines
2.9 KiB
Groff
.\" Copyright (c) 1989, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" From: @(#)nfsiod.8 8.2 (Berkeley) 2/22/94
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.\" $FreeBSD$
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.\"
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.Dd December 26, 2009
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.Dt NFSIOD 8
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.Os
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.Sh NAME
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.Nm nfsiod
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.Nd local
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.Tn NFS
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asynchronous I/O server
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.Sh SYNOPSIS
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.Nm
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.Op Fl n Ar num_servers
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.Sh DESCRIPTION
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The
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.Nm
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utility controls the maximum number of
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.Nm
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kernel processes which run on an
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.Tn NFS
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client machine to service asynchronous I/O requests to its server.
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Having
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.Nm
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kernel processes
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improves performance but is not required for correct operation.
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.Pp
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The option is as follows:
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.Bl -tag -width indent
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.It Fl n
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Specify how many processes are permitted to be started.
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.El
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.Pp
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Without an option,
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.Nm
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displays the current settings.
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A client should allow enough number of processes to handle its maximum
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level of concurrency, typically four to six.
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.Pp
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If
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.Nm
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detects that the running kernel does not include
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.Tn NFS
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support, it will attempt to load a kernel module containing
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.Tn NFS
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code, using
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.Xr kldload 2 .
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If this fails, or no
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.Tn NFS
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module was available,
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.Nm
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exits with an error.
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.Sh EXIT STATUS
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.Ex -std
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.Sh SEE ALSO
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.Xr nfsstat 1 ,
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.Xr kldload 2 ,
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.Xr nfssvc 2 ,
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.Xr mountd 8 ,
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.Xr nfsd 8 ,
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.Xr rpcbind 8
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.Sh HISTORY
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The
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.Nm
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utility first appeared in
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.Bx 4.4 .
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.Pp
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Starting with
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.Fx 5.0 ,
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the utility no longer starts daemons, but only serves as a vfs
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loader and
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.Xr sysctl 3
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wrapper.
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