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NFSSTAT(8C)                                                        NFSSTAT(8C)



NAME
       nfsstat - Network File System statistics

SYNOPSIS
       nfsstat [ -cmnrsz ]

AVAILABILITY
       This  program  is  available  with the Networking software installation
       option.  Refer to for information on how to install optional software.

DESCRIPTION
       nfsstat displays statistical information about the  NFS  (Network  File
       System)  and RPC (Remote Procedure Call), interfaces to the kernel.  It
       can also be used to reinitialize this information.  If no  options  are
       given the default is

              nfsstat -cnrs

       That is, display everything, but reinitialize nothing.

OPTIONS
       -c     Display  client  information.   Only the client side NFS and RPC
              information will be printed.  Can be combined with the -n and -r
              options to print client NFS or client RPC information only.

       -m     Display  statistics  for  each  NFS  mounted  file system.  This
              includes the server name and address, mount flags, current  read
              and  write  sizes, the retransmission count, and the timers used
              for  dynamic  retransmission.   The  srtt  value  contains   the
              smoothed  round  trip time, the dev value contains the estimated
              deviation, and the cur value is the current backed-off  retrans-
              mission value.

       -n     Display  NFS  information.   NFS information for both the client
              and server side will be printed.  Can be combined  with  the  -c
              and -s options to print client or server NFS information only.

       -r     Display RPC information.

       -s     Display server information.

       -z     Zero  (reinitialize)  statistics.  This option is for use by the
              super-user only, and can be  combined  with  any  of  the  above
              options  to  zero  particular  sets of statistics after printing
              them.

DISPLAYS
       The server RPC display includes the following fields:

              calls     The total number of RPC calls received.

              badcalls  The total number of calls rejected by  the  RPC  layer
                        (the sum of badlen and xdrcall as defined below).

              nullrecv  The number of times an RPC call was not available when
                        it was thought to be received.

              badlen    The number of RPC calls with a length shorter  than  a
                        minimum-sized RPC call.

              xdrcall   The  number of RPC calls whose header could not be XDR
                        decoded.

       The server NFS display shows the number of NFS calls  received  (calls)
       and rejected (badcalls), and the counts and percentages for the various
       calls that were made.

       The client RPC display includes the following fields:

              calls     The total number of RPC calls made.
              badcalls  The total number of calls rejected by the RPC layer.
              retrans   The number of times a call had to be retransmitted due
                        to  a  timeout  while  waiting  for  a  reply from the
                        server.
              badxid    The number of times a reply from a server was received
                        which did not correspond to any outstanding call.
              timeout   The number of times a call timed out while waiting for
                        a reply from the server.
              wait      The number of times a call  had  to  wait  because  no
                        client handle was avaiable.
              newcred   The  number of times authentication information had to
                        be refreshed.
              timers    The number of times the calculated time-out value  was
                        greater  than  or equal to the minimum specified time-
                        out value for a call.

       The client NFS display shows the number of calls sent and rejected,  as
       well  as the number of times a CLIENT handle was received (nclget), the
       number of times a call had to sleep while awaiting a handle (nclsleep),
       as  well  as a count of the various calls and their respective percent-
       ages.

FILES
       /vmunix             system namelist
       /dev/kmem           kernel memory



                                7 October 1990                     NFSSTAT(8C)