nfsstat(8)		    System Manager's Manual		    nfsstat(8)



NAME
       nfsstat - list NFS statistics

SYNOPSIS
       nfsstat [OPTION]...

DESCRIPTION
       The nfsstat displays statistics kept about NFS client and server activ-
       ity.

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

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

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

       -2     Print only NFS v2 statistics.  The  default  is  to  only	 print
	      information about the versions of NFS that have non-zero counts.

       -3     Print  only  NFS	v3  statistics.	 The  default is to only print
	      information about the versions of NFS that have non-zero counts.

       -4     Print only NFS v4 statistics.  The  default  is  to  only	 print
	      information about the versions 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 facility
	      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 number of lookups, and the number  of
		     hits and 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 file
	      Instead  of printing current statistics, nfsstat imports statis-
	      tics from file and displays the difference between those and the
	      current  statistics.   Valid  input  files 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 statistics missing from a saved nfs-
	      stat output file are treated as zeroes.

       -Z[interval], --sleep=[interval]
	      Instead  of printing current statistics and immediately exiting,
	      nfsstat takes a snapshot 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 num-
	      ber 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).  nfs(5).

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 option.

       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)