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.\"     From: @(#)nfsiod.8	8.2 (Berkeley) 2/22/94
.\"	$Id: nfsiod.8,v 1.6 1998/07/15 06:35:20 charnier Exp $
.\"
.Dd September 22, 1994
.Dt NFSIOD 8
.Os
.Sh NAME
.Nm nfsiod
.Nd local
.Tn NFS
asynchronous I/O server
.Sh SYNOPSIS
.Nm nfsiod
.Op Fl n Ar num_servers
.Sh DESCRIPTION
.Nm Nfsiod
runs on an
.Tn NFS
client machine to service asynchronous I/O requests to its server.
It improves performance but is not required for correct operation.
.Pp
Unless otherwise specified, a single server is started.
.Pp
The options are as follows:
.Bl -tag -width indent
.It Fl n
Specify how many servers are to be started.
.El
.Pp
A client should run enough daemons to handle its maximum
level of concurrency, typically four to six.
.Pp
If
.Nm
detects that the running kernel does not include
.Tn NFS
support, it will attempt to load a loadable kernel module containing
.Tn NFS
code, using
.Xr kldload 8
by way of
.Xr vfsload 3 .
If this fails, or no
.Tn NFS
KLD was available,
.Nm
exits with an error.
.Pp
The
.Nm
utility exits 0 on success, and >0 if an error occurs.
.Sh SEE ALSO
.Xr nfsstat 1 ,
.Xr nfssvc 2 ,
.Xr kldload 8 ,
.Xr mountd 8 ,
.Xr portmap 8
.Sh HISTORY
The
.Nm
utility first appeared in
.Bx 4.4 .