nfsstat(1M) manual page
Table of Contents
nfsstat - NFS statistics
nfsstat [ -cmnrsz ]
SUNWcsu
nfsstat displays statistical information about the NFS
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.
- -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 retransmission 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.
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.
- dupchecks
- The number of RPC
calls that
looked up in the duplicate request cache.
- dupreqs
- The number of RPC
calls
that were found to be duplicates.
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.
- badxids
- The
number of times a reply from a server was received which did not correspond
to any outstanding call.
- timeouts
- The number of times a call timed out while
waiting for a reply from the server.
- newcreds
- The number of times authentication
information had to be refreshed.
- badverfs
- The number of times the call failed
due to a bad verifier in the response.
- 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.
- cantconn
- The number of times the call failed due to a
failure to make a connection to the server.
- nomem
- The number of times the
call failed due to a failure to allocate memory.
- interrupts
- The number of
times the call was interrupted by a signal before completing.
- retrans
- The
number of times a call had to be retransmitted due to a timeout while waiting
for a reply from the server. Applicable only to RPC
over connection-less
transports.
The client NFS
display shows the number of calls sent and rejected,
as well as the number of times a CLIENT
handle was received (clgets),
the number of times the CLIENT
handle cache had no unused entries (cltoomany),
as well as a count of the various calls and their respective percentages.
The -m option includes information about mount flags set by mount options,
mount flags internal to the system, and other mount information. See mount_nfs(1M)
.
The following mount flags are set by mount options:
auth (one of the following
values):
- none
- No authentication.
- unix
- UNIX style authentication (UID
, GID
).
- short
- Short hand UNIX style authentication.
- des
- des style authentication
(encrypted timestamps).
- kerb
- kerberos style authentication.
- hard
- Hard mount.
- soft
- Soft mount.
- intr
- Interrupts allowed on hard mount.
- nointr
- No interrupts
allowed on hard mount.
- noac
- Client is not caching attributes.
- rsize
- Read
buffer size in bytes.
- wsize
- Write buffer size in bytes.
- retrans
- NFS
retransmissions.
- nocto
- No close-to-open consistency.
- llock
- Local locking being used (no lock
manager).
- grpid
- System V group id inheritance.
- rpctimesync
- RPC
time sync.
The following mount flags are internal to the system:
- printed
- "Not responding"
message printed.
- down
- Server is down.
- dynamic
- Dynamic transfer size adjustment.
- link
- Server supports links.
- symlink
- Server supports symbolic links.
- readdir
- Use readdir instead of readdirplus.
- acl
- Server supports NFS_ACL
.
The following
flags relate to additional mount information:
- vers
- NFS
version.
- proto
- Protocol.
The following exit values are returned:
- Successful completion.
- >0
- An error occurred.
mount_nfs(1M)
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