NAME
nfsstat − Network File System statistics
SYNOPSIS
nfsstat [ −cmnrszO ]
AVAILABILITY
This command is available from the Interphase Network Coprocessor (NC) software distribution and supersedes the standard SunOS distribution version. This man page describes the Network Coprocessor version. Although this version offers additional options compared to the SunOS command, it produces identical results to the SunOS version for the same standard SunOS invocations. For information about installing the NC software distribution, refer to the InstallationNetworkCoprocessor
DESCRIPTION
nfsstat displays statistical information about the NFS (Network File System) 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 all statistics, one aggregate number per field, but reinitialize nothing.
By default for the NFS server statistics, nfsstat aggregates information from all active server daemons within the system; this includes the nfsd SunOS server daemons and the omni_nfsd Network Coprocessor NFS server daemons.
OPTIONS
−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. The server information is obtained from the standard SunOS server information and similar information for each Network Coprocessor installed in the system.
−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.
−O NC option. This option separately displays the statistics collected by nfsd(8) and omni_nfsd(8) and its associated interfaces (i.e., /dev/ne[0-7]). It is useful for comparing relative workload on systems where both types of NFS daemons are concurrently active. Can be combined with any of the −n,−c,−s, and −r options. Ignored if no Network Coprocessor is installed or no omni_nfsd(8) is running. With the −r option, the RPC statistics of the omni_nfsd(8) report are detailed per Network Coprocessor.
DISPLAYS
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.
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.
retrans The number of times a call had to be retransmitted due to a timeout while waiting for a reply from the server.
badxid The number of times a reply from a server was received which did not correspond to any outstanding call.
timeout The number of times a call timed out while waiting for a reply from the server.
wait The number of times a call had to wait because no client handle was avaiable.
newcred The number of times authentication information had to be refreshed.
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.
The client NFS display shows the number of calls sent and rejected, as well as the number of times a CLIENT handle was received (nclget), the number of times a call had to sleep while awaiting a handle (nclsleep), as well as a count of the various calls and their respective percentages.
FILES
/vmunix system namelist
/dev/kmem kernel memory
/dev/ne[0-7] Network Coprocessor interfaces
SEE ALSO
InstallationNetworkCoprocessor
Interphase Corp.