.\" nfsstat(8)
.\"
.\" Copyright (C) 1996-2005 Olaf Kirch <okir@suse.de>
-.TH nfsstat 8 "11 Apr 2005"
+.TH nfsstat 8 "7 Aug 2007"
.SH NAME
nfsstat \- list NFS statistics
.SH SYNOPSIS
.B \-4
Print only NFS v4 statistics.
.TP
-.B \-m, \-\-mounted
+.B \-m, \-\-mounts
Print information about each of the mounted \fBNFS\fR file systems.
If this option is used, all other options are ignored.
.TP
.B \-v, \-\-verbose
This is equivalent to \fB\-o all\fR.
+.TP
+.BI "\-S, \-\-since " file
+Instead of printing current statistics,
+.B nfsstat
+imports statistics from
+.I file
+and displays the difference between those and the current statistics.
+Valid input
+.IR file "s may be in the form of "
+.B /proc/net/rpc/nfs
+(raw client stats),
+.B /proc/net/rpc/nfsd
+(raw server stats), or saved output from
+.B nfsstat
+itself (client and/or server stats). Any statistics missing from a saved
+.B nfsstat
+output
+.I file
+are treated as zeroes.
+.TP
+.B \-Z, \-\-sleep
+Instead of printing current statistics and immediately exiting,
+.B nfsstat
+takes a snapshot of the current statistics and pauses until it receives
+.B SIGINT
+(typically from
+.BR Ctrl-C ),
+at which point it takes another snapshot and displays the difference
+between the two.
+.\" --------------------- EXAMPLES -------------------------------
.SH EXAMPLES
.TP
.B nfsstat \-o all \-234