Keep the interval output quite when there is no NFS traffic.

[nfs-utils.git] / utils / nfsstat / nfsstat.man

diff --git a/utils/nfsstat/nfsstat.man b/utils/nfsstat/nfsstat.man
index 895c36b2f764544cf0b7ba0d997f98cd44381fb8..461b2c02e7cf9ad5bd15ce01b8da0e2fdfb9ed4a 100644 (file)
--- a/utils/nfsstat/nfsstat.man
+++ b/utils/nfsstat/nfsstat.man
@@ -2,7 +2,7 @@
 .\" nfsstat(8)
 .\" 
 .\" Copyright (C) 1996-2005 Olaf Kirch <okir@suse.de>
 .\" 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
 .SH NAME
 nfsstat \- list NFS statistics
 .SH SYNOPSIS


@@ -35,7 +35,7 @@ Print only NFS v3 statistics.
 .B \-4
 Print only NFS v4 statistics. 
 .TP
 .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.
 Print information about each of the mounted \fBNFS\fR file systems.
 
 If this option is used, all other options are ignored.


@@ -71,6 +71,40 @@ Display all of the above facilities.
 .TP
 .B \-v, \-\-verbose
 This is equivalent to \fB\-o all\fR.
 .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[interval], \-\-sleep=[interval]
+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.
+If \fIinterval\fR is specified, 
+.B nfsstat
+will print the number of \fBNFS\fR calls made since the previous report.
+Stats will be printed repeatedly every \fIinterval\fR seconds.
+.\" --------------------- EXAMPLES -------------------------------

 .SH EXAMPLES
 .TP
 .B nfsstat \-o all \-234
 .SH EXAMPLES
 .TP
 .B nfsstat \-o all \-234