nfsstat - list NFS statistics
nfsstat [
OPTION]...
The
nfsstat displays statistics kept about NFS client and server
activity.
- -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.
- io
- Usage information on the server's io statistics; bytes read
and written.
- ra
- Usage information on the server's read ahead cache,
including the ra cache size, the depth of ra cache hits, and ra cache
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.
- 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.
The
Flags output from the
-m option is the same as the flags give
to the
mount command.
- /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.
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
-[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/.
Olaf Kirch, <
[email protected]>