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>