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.\" From: @(#)nfsiod.8 8.2 (Berkeley) 2/22/94
.Dd December 26, 2009
.Dt NFSIOD 8
asynchronous I/O server
.Op Fl n Ar num_servers
utility controls the maximum number of
kernel processes which run on an
client machine to service asynchronous I/O requests to its server.
improves performance but is not required for correct operation.
The option is as follows:
.Bl -tag -width indent
.It Fl n
Specify how many processes are permitted to be started.
Without an option,
displays the current settings.
A client should allow enough number of processes to handle its maximum
level of concurrency, typically four to six.
detects that the running kernel does not include
support, it will attempt to load a kernel module containing
.Xr kldload 2 .
If this fails, or no
module was available,
exits with an error.
.Sh EXIT STATUS
.Sh SEE ALSO
.Xr nfsstat 1 ,
.Xr kldload 2 ,
.Xr nfssvc 2 ,
.Xr mountd 8 ,
.Xr nfsd 8 ,
.Xr rpcbind 8
utility first appeared in
.Bx 4.4 .
.Fx 5.0 ,
the utility no longer starts daemons, but only serves as a vfs
.Xr sysctl 3