1nfsstat(8)                  System Manager's Manual                 nfsstat(8)
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NAME

6       nfsstat - list NFS statistics
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SYNOPSIS

9       nfsstat [OPTION]...
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DESCRIPTION

12       The nfsstat displays statistics kept about NFS client and server activ‐
13       ity.
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OPTIONS

16       -s, --server
17              Print only server-side statistics. The default is to print  both
18              server and client statistics.
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20       -c, --client
21              Print only client-side statistics.
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23       -n, --nfs
24              Print  only NFS statistics. The default is to print both NFS and
25              RPC information.
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27       -2     Print only NFS v2 statistics.  The  default  is  to  only  print
28              information about the versions of NFS that have non-zero counts.
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30       -3     Print  only  NFS  v3  statistics.  The  default is to only print
31              information about the versions of NFS that have non-zero counts.
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33       -4     Print only NFS v4 statistics.  The  default  is  to  only  print
34              information about the versions of NFS that have non-zero counts.
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36       -m, --mounts
37              Print information about each of the mounted NFS file systems.
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39              If this option is used, all other options are ignored.
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41       -r, --rpc
42              Print only RPC statistics.
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44       -o facility
45              Display statistics for the specified facility, which must be one
46              of:
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48              nfs    NFS protocol information, split up by RPC call.
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50              rpc    General RPC information.
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52              net    Network layer statistics, such as the number of  received
53                     packets, number of TCP connections, etc.
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55              fh     Usage  information  on  the  server's  file handle cache,
56                     including the total number of lookups, and the number  of
57                     hits and misses.
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59              rc     Usage  information  on  the server's request reply cache,
60                     including the total number of lookups, and the number  of
61                     hits and misses.
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63              all    Display all of the above facilities.
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65       -v, --verbose
66              This is equivalent to -o all.
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68       -l, --list
69              Print information in list form.
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71       -S, --since file
72              Instead  of printing current statistics, nfsstat imports statis‐
73              tics from file and displays the difference between those and the
74              current  statistics.   Valid  input  files may be in the form of
75              /proc/net/rpc/nfs (raw client  stats),  /proc/net/rpc/nfsd  (raw
76              server  stats),  or  saved  output  from  nfsstat itself (client
77              and/or server stats).   Any statistics missing from a saved nfs‐
78              stat output file are treated as zeroes.
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80       -Z[interval], --sleep=[interval]
81              Instead  of printing current statistics and immediately exiting,
82              nfsstat takes a snapshot of the current  statistics  and  pauses
83              until it receives SIGINT (typically from Ctrl-C), at which point
84              it takes another snapshot and displays  the  difference  between
85              the  two.  If interval is specified, nfsstat will print the num‐
86              ber of NFS calls made since the previous report.  Stats will  be
87              printed repeatedly every interval seconds.
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EXAMPLES

90       nfsstat -o all -234
91              Show all information about all versions of NFS.
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93       nfsstat --verbose -234
94              Same as above.
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96       nfsstat -o all
97              Show all information about active versions of NFS.
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99       nfsstat --nfs --server -3
100              Show statistics for NFS version 3 server.
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102       nfsstat -m
103              Show information about mounted NFS filesystems.
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DISPLAY

106       The  Flags  output  from the -m option is the same as the flags give to
107       the mount command.
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FILES

110       /proc/net/rpc/nfsd
111              procfs-based interface to kernel NFS server statistics.
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113       /proc/net/rpc/nfs
114              procfs-based interface to kernel NFS client statistics.
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116       /proc/mounts
117              procfs-based interface to the mounted filesystems.
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SEE ALSO

120       rpc.nfsd(8).  nfs(5).
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BUGS

123       The default output has been changed.  To get the old default output you
124       must run nfsstat --auto -2.
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126       The  function  of  the -v and -a options have changed. The -a option is
127       now reserved for future use. The -v does what the -a option used to do,
128       and the new -[234] options replace the -v option.
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130       The Display section should be more complete.
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132       Further bugs can be found or reported at http://nfs.sf.net/.
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AUTHOR

135       Olaf Kirch, <okir@suse.de>
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139                                  7 Aug 2007                        nfsstat(8)
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