NFSSTAT(1) BSD General Commands Manual NFSSTAT(1)NAME
nfsstat -- display NFS statistics
nfsstat [-cemoszW] [-M core] [-N system] [-w wait]
The nfsstat command displays statistics kept about NFS client and server activity. For the NFSv4 server, the statistics are for operations
within the Compound RPCs and not the count of RPCs. If you wish to compare RPC counts between NFSv3 and NFSv4, you must use statistics in
The options are as follows:
-c Only display client side statistics.
-e Report the extra statistics collected by the new NFS client and server for NFSv4. This option is incompatible with -o.
-M Extract values associated with the name list from the specified core instead of the default /dev/kmem.
-m Report the mount options for all new NFS client mounts. This option overrides all others and nfsstat will exit after completing the
report. This option is only supported by the new NFS client.
-N Extract the name list from the specified system instead of the default /boot/kernel/kernel.
-o Report statistics for the old NFS client and/or server. Without this option statistics for the new NFS client and/or server will be
-s Only display server side statistics.
-W Use wide format with interval short summary. This option is especially useful when combined with -c or -s and a time delay.
-w Display a shorter summary of NFS activity for both the client and server at wait second intervals.
-z Reset statistics after displaying them.
/boot/kernel/kernel default kernel namelist
/dev/kmem default memory file
SEE ALSO fstat(1), netstat(1), ps(1), systat(1), sysctl(3), iostat(8), nfsdumpstate(8), pstat(8), vmstat(8)HISTORY
The nfsstat command appeared in 4.4BSD.
BSD May 1, 2013 BSD
Check Out this Related Man Page
nfsstat(8) System Manager's Manual nfsstat(8)NAME
nfsstat - list NFS statistics
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.
Print only client-side statistics.
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.
Print information about each of the mounted NFS file systems.
If this option is used, all other options are ignored.
Print only RPC statistics.
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
rc Usage information on the server's request reply cache, including the total number of lookups, and the number of hits and
all Display all of the above facilities.
This is equivalent to -o all.
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 cur-
rent 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.
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 repeat-
edly every interval seconds.
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.
Show information about mounted NFS filesystems.
The Flags output from the -m option is the same as the flags give to the mount command.
procfs-based interface to kernel NFS server statistics.
procfs-based interface to kernel NFS client statistics.
procfs-based interface to the mounted filesystems.
SEE ALSO rpc.nfsd(8). nfs(5).
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 - options replace the -v option.
The Display section should be more complete.
Further bugs can be found or reported at http://nfs.sf.net/.
Olaf Kirch, <email@example.com>
7 Aug 2007 nfsstat(8)