Provided by: nfs-common_1.1.4-1ubuntu1_i386 bug

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 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.

       -4     Print only NFS v4 statistics.

       -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.

       -S, --since file
              Instead  of  printing  current   statistics,   nfsstat   imports
              statistics  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
              nfsstat output file are treated as zeroes.

       -Z, --sleep
              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.

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)