Number of necessary nfsd threads

There is a single nfsd daemon on the NFS server which is multithreaded. This means that there are multiple kernel threads within the nfsd process. The number of threads is self-tuning in that the daemon creates and destroys threads as needed, based on NFS load.

Due to this self-tuning capability, and since the default number (3891) of maximum nfsd threads is the maximum allowed anyway, it is rarely necessary to change this value. Nevertheless, you can adjust the maximum number of nfsd threads in the system by using the nfs_max_threads parameter of the nfso command.