There are many factors that contribute to decreasing server performance; however, if your server is performing poorly and you suspect the storage subsystem (NSS), you can monitor the storage subsystem by using specific NSS command line options. These options help you determine if any tuning is required.
For further details and explanation, see the Command Line Options for Monitoring NSS in the July 2002 AppNote, Novell Storage Services (NSS) Performance Monitoring and Tuning.
After you have determined that your storage subsystem needs tuning, determine what NSS parameters can be adjusted to improve your current NSS performance. Before adjusting parameter settings, review the Section 30.2, NSS Tuning Guidelines.