I am experiencing the same behavior in a small network with 1 Gb ethernet connection between client and server. Large files can be moved over Samba quickly. The same files over NFSv4 move very slow and pause for long periods of time. I also see the high load due to nfsd threads.
This problem started with an upgrade to precise on both client and server. Before that, I had oneiric on the client and maverick on the server (and various other versions before that also worked well).
I am experiencing the same behavior in a small network with 1 Gb ethernet connection between client and server. Large files can be moved over Samba quickly. The same files over NFSv4 move very slow and pause for long periods of time. I also see the high load due to nfsd threads.
This problem started with an upgrade to precise on both client and server. Before that, I had oneiric on the client and maverick on the server (and various other versions before that also worked well).