# nfsstat - list NFS statistics - man(8) - [phpMan]

[_nfsstat_(8)](https://www.chedong.com/phpMan.php/man/nfsstat/8/markdown)                             System Manager's Manual                            [_nfsstat_(8)](https://www.chedong.com/phpMan.php/man/nfsstat/8/markdown)

## NAME
       nfsstat - list NFS statistics

## SYNOPSIS
       **nfsstat **[_OPTION_]...

## DESCRIPTION
       The **nfsstat **displays statistics kept about NFS client and server activity.

## OPTIONS
### -s, --server
              Print only server-side statistics. The default is to print both server and client sta‐
              tistics.

### -c, --client
              Print only client-side statistics.

### -n, --nfs
              Print only NFS statistics. The default is to print both NFS and RPC information.

### -2     
              sions of **NFS **that have non-zero counts.

### -3     
              sions of **NFS **that have non-zero counts.

### -4     
              sions of **NFS **that have non-zero counts.

### -m, --mounts
              Print information about each of the mounted **NFS **file systems.

              If this option is used, all other options are ignored.

### -r, --rpc
              Print only RPC statistics.

### -o _
              Display statistics for the specified facility, which must be one of:

              **nfs    **NFS protocol information, split up by RPC call.

              **rpc    **General RPC information.

              **net    **Network layer statistics, such as the number of received packets, number of TCP
                     connections, etc.

              **fh     **Usage information on the server's file handle cache, including the total number
                     of lookups, and the number of hits and misses.

              **rc     **Usage information on the server's request reply cache, including the total num‐
                     ber of lookups, and the number of hits and misses.

              **io     **Usage information on the server's io statistics; bytes read and written.

              **ra     **Usage information on the server's read ahead  cache,  including  the  ra  cache
                     size, the depth of ra cache hits, and ra cache misses.

              **all    **Display all of the above facilities.

### -v, --verbose
              This is equivalent to **-o all**.

### -l, --list
              Print information in list form.

### -S, --since _
              Instead  of printing current statistics, **nfsstat **imports statistics from _file_ and dis‐
              plays the difference between those and the current statistics.  Valid input _file_s  may
              be in the form of **/proc/net/rpc/nfs **(raw client stats), **/proc/net/rpc/nfsd **(raw server
              stats),  or  saved output from **nfsstat **itself (client and/or server stats).   Any sta‐
              tistics missing from a saved **nfsstat **output _file_ are treated as zeroes.

### -Z[interval], --sleep=[interval]
              Instead of printing current statistics and immediately exiting, **nfsstat **takes a  snap‐
              shot  of  the  current  statistics and pauses until it receives **SIGINT **(typically from
              **Ctrl-C**), at which point it takes another snapshot and displays the difference  between
              the  two.   If  _interval_ is specified, **nfsstat **will print the number of **NFS **calls made
              since the previous report.  Stats will be printed repeatedly every _interval_ seconds.

## EXAMPLES
### nfsstat -o all -234
              Show all information about all versions of **NFS**.

### nfsstat --verbose -234
              Same as above.

### nfsstat -o all
              Show all information about active versions of **NFS**.

### nfsstat --nfs --server -3
              Show statistics for **NFS **version 3 server.

### nfsstat -m
              Show information about mounted **NFS **filesystems.

## DISPLAY
       The **Flags **output from the **-m **option is the same as the flags give to the **mount **command.

## FILES
### /proc/net/rpc/nfsd
              **procfs**-based interface to kernel NFS server statistics.

### /proc/net/rpc/nfs
              **procfs**-based interface to kernel NFS client statistics.

### /proc/mounts
              **procfs**-based interface to the mounted filesystems.

## SEE ALSO
       [**rpc.nfsd**(8)](https://www.chedong.com/phpMan.php/man/rpc.nfsd/8/markdown).  [**nfs**(5)](https://www.chedong.com/phpMan.php/man/nfs/5/markdown).

## BUGS
       The default output has been changed.  To get the old default  output  you  must  run  **nfsstat**
       **--auto -2**.

       The  function of the **-v **and **-a **options have changed. The **-a **option is now reserved for future
       use. The **-v **does what the **-a **option used to do, and the new **-[234] **options replace the **-v **op‐
       tion.

       The **Display **section should be more complete.

       Further bugs can be found or reported at **<http://nfs.sf.net/>**.

## AUTHOR
       Olaf Kirch, <<okir@suse.de>>

                                             7 Aug 2007                                   [_nfsstat_(8)](https://www.chedong.com/phpMan.php/man/nfsstat/8/markdown)