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nfsstat(8)


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.  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
          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[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
          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).  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)



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