This daemon handles other client file-system requests. You can use several options with this command. See the nfsd(1M) man page for a complete listing. These options can either be used from the command line or by editing the appropriate string in /etc/default/nfs.
The NFSD_LISTEN_BACKLOG=length parameter in /etc/default/nfs sets the length of the connection queue over connection-oriented transports for NFS and TCP. The default value is 32 entries. The same selection can be made from the command line by starting nfsd with the -l option.
The NFSD_MAX_CONNECTIONS=#-conn parameter in /etc/default/nfs selects the maximum number of connections per connection-oriented transport. The default value for #-conn is unlimited. The same parameter can be used from the command line by starting the daemon with the -c #-conn option.
The NFSD_SERVER=nservers parameter in /etc/default/nfs selects the maximum number of concurrent requests that a server can handle. The default value for nservers is 16. The same selection can be made from the command line by starting nfsd with the nservers option.
Unlike older versions of this daemon, nfsd does not spawn multiple copies to handle concurrent requests. Checking the process table with ps only shows one copy of the daemon running.