NFS Server Performance and Tuning Guide for Sun Hardware

NFS Monitoring Tools

Table A-1 describes the tools that you can use to monitor NFS operations and performance.

Table A-1 NFS Operations and Performance-Monitoring Tools


Tool	Function
`iostat`	Reports I/O statistics, including disk I/O activity
`nfsstat`	Reports NFS statistics: NFS and RPC (Remote Procedure Call) interfaces to the kernel; can also be used to initialize statistical information
`nfswatch`	Shows NFS transactions classified by file system; `nfswatch` is a public domain tool with source code available on the URL: `http://www.ers.ibm.com/~davy/software/nfswatch.html`
`sar`	Reports system activity such as CPU utilization, buffer activity, and disk and tape device activity
SharpShooter*	Pinpoints bottlenecks, balances NFS load across clients and servers; shows effect of distributed applications and balances network traffic across servers; accounts for disk usage by user or group
`vmstat`	Reports virtual memory statistics including disk activity
* by Network General Corporation, formerly AIM Technology

For additional networking and network monitoring utilities, see the URL: http://www.alw.nih.gov/Security/prog-network.html