.\"
.\" mountstats(8)
.\"
.TH mountstats 8 "12 Dec 2014"
.SH NAME
mountstats \- Displays various NFS client per-mount statistics
.SH SYNOPSIS
.B mountstats
.RB [ \-h | \-\-help ]
.RB [ \-v | \-\-version ]
.RB [ \-f | \-\-file
.IR infile ]
.RB [ \-S | \-\-since
.IR sincefile ]
.\" .RB [ \-n | \-\-nfs | \-r | \-\-rpc | \-R | \-\-raw ]
[
.RB [ \-n | \-\-nfs ]
|
.RB [ \-r | \-\-rpc ]
|
.RB  [ \-R | \-\-raw ]
]
.RI [ mountpoint ] ...
.P
.B mountstats iostat
.RB [ \-h | \-\-help ]
.RB [ \-v | \-\-version ]
.RB [ \-f | \-\-file
.IR infile ]
.RB [ \-S | \-\-since
.IR sincefile ]
.RI [ interval ]
.RI [ count ]
.RI [ mountpoint ] ...
.P
.B mounstats nfsstat
.RB [ \-h | \-\-help ]
.RB [ \-v | \-\-version ]
.RB [ \-f | \-\-file
.IR infile ]
.RB [ \-S | \-\-since
.IR sincefile ]
.RB [ \-3 ]
.RB [ \-4 ]
.RI [ mountpoint ] ...
.P
.SH DESCRIPTION
.RB "The " mountstats " command displays various NFS client statisitics for each given"
.IR mountpoint .
.P
.RI "If no " mountpoint " is given, statistics will be displayed for all NFS mountpoints on the client."
.SS Sub-commands
Valid
.BR mountstats (8)
subcommands are:
.IP "\fBmountstats\fP"
Display a combination of per-op RPC statistics, NFS event counts, and NFS byte counts.  This is the default sub-command that will be executed if no sub-command is given.
.IP "\fBiostat\fP"
Display iostat-like statistics.
.IP "\fBnfsstat\fP"
Display nfsstat-like statistics.
.SH OPTIONS
.SS Options valid for all sub-commands
.TP
.B \-h, \-\-help
show the help message and exit
.TP
.B \-v, \-\-version
show program's version number and exit
.TP
\fB\-f \fIinfile\fR, \fB\-\-file \fIinfile
Read stats from
.I infile
instead of 
.IR /proc/self/mountstats ".  " infile
must be in the same format as 
.IR /proc/self/mountstats .
This may be used with the
.BR \-S | \-\-since
options to display the delta between two different points in time.
This may not be used with the
.IR interval " or " count
options of the
.B iostat
sub-command.
.TP
\fB\-S \fIsincefile\fR, \fB\-\-since \fIsincefile
Show difference between current stats and those in
.IR sincefile ".  " sincefile
must be in the same format as 
.IR /proc/self/mountstats .
This may be used with the
.BR \-f | \-\-file
options to display the delta between two different points in time.
This may not be used with the
.IR interval " or " count
options of the
.B iostat
sub-command.
.SS Options specific to the mountstats sub-command
.B \-n, \-\-nfs
Display only the NFS statistics
.TP
.B \-r, \-\-rpc
Display only the RPC statistics
.TP
.B \-R, \-\-raw
Display only the raw statistics.  This is intended for use with the
.BR \-f | \-\-file
and
.BR \-S | \-\-since
options.
.SS Options specific to the iostat sub-command
.IP "\fIinterval\fP"
Specifies the amount of time in seconds between each report.  The first report contains statistics for the time since each file system was mounted.  Each subsequent report contains statistics collected during the interval since the previous report.  This may not be used with the
.BR \-f | \-\-file
or
.BR \-S | \-\-since
options.
.P
.IP "\fIcount\fP"
Determines the number of reports generated at
.I interval
seconds apart.  If the
.I interval
parameter is specified without the
.I count
parameter, the command generates reports continuously.  This may not be used with the
.BR \-f | \-\-file
or
.BR \-S | \-\-since 
options.
.SS Options specific to the nfsstat sub-command
.IP "\fB\-3\fP"
Show only NFS version 3 statistics.  The default is to show both version 3 and version 4 statistics.
.IP "\fB\-4\fP"
Show only NFS version 4 statistics.  The default is to show both version 3 and version 4 statistics.
.SH FILES
.TP
.B /proc/self/mountstats
.SH SEE ALSO
.BR iostat (8),
.BR nfsiostat (8),
.BR nfsstat (8)
.SH AUTHOR
Chuck Lever <chuck.lever@oracle.com>