Follow these steps in sequence to improve the performance of your NFS server.
Measure the current level of performance for the network, server, and each client. See "Checking Network, Server, and Client Performance"" later in this chapter.
Analyze the gathered data by graphing it. Look for exceptions, high disk and CPU utilization, and high disk service times. Apply thresholds or performance rules to the data.
Tune the server. See Chapter 4, Configuring the Server and the Client to Maximize NFS Performance.
Repeat Steps 1 through 3 until you achieve the desired performance.