svn commit: r306633 - stable/11/usr.bin/nfsstat
Rick Macklem
rmacklem at FreeBSD.org
Mon Oct 3 12:13:42 UTC 2016
Author: rmacklem
Date: Mon Oct 3 12:13:40 2016
New Revision: 306633
URL: https://svnweb.freebsd.org/changeset/base/306633
Log:
MFC: r304059
Update the man page to descibe the "-d" option added by r304058.
This is a content change.
Modified:
stable/11/usr.bin/nfsstat/nfsstat.1
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/usr.bin/nfsstat/nfsstat.1
==============================================================================
--- stable/11/usr.bin/nfsstat/nfsstat.1 Mon Oct 3 12:02:45 2016 (r306632)
+++ stable/11/usr.bin/nfsstat/nfsstat.1 Mon Oct 3 12:13:40 2016 (r306633)
@@ -28,7 +28,7 @@
.\" From: @(#)nfsstat.1 8.1 (Berkeley) 6/6/93
.\" $FreeBSD$
.\"
-.Dd April 23, 2015
+.Dd August 13, 2016
.Dt NFSSTAT 1
.Os
.Sh NAME
@@ -38,7 +38,7 @@
statistics
.Sh SYNOPSIS
.Nm
-.Op Fl cemszW
+.Op Fl cdemszW
.Op Fl M Ar core
.Op Fl N Ar system
.Op Fl w Ar wait
@@ -57,6 +57,28 @@ The options are as follows:
.Bl -tag -width indent
.It Fl c
Only display client side statistics.
+.It Fl d
+Display statistics for the new NFS server that are similar to those
+displayed by
+.Xr iostat 8 .
+This includes kilobytes per transfer, transfers per second, and megabytes per
+second for read, write, and all operations.
+It also includes the current queue depth, the busy percentage, and latency
+for all operations.
+If the
+.Fl W
+flag is added, commits per second, commit latency, read latency, and write
+latency are also added to the display.
+The busy percentage shown can exceed 100 at times.
+This is because of the way busy percentages are calculated.
+The busy time is calculated by adding the elapsed time between the
+last time an operation started or finished,
+and the current time.
+If there is only one operation outstanding, the "busy time" time
+will get updated with the total time of that operation.
+That means that the difference in the busy time between the two
+measurement intervals (often 1 second)
+will increase by more than the measurement interval.
.It Fl e
Report the extra statistics collected by the NFS client and
server for NFSv4.
@@ -79,7 +101,8 @@ Only display server side statistics.
Use wide format with interval short summary.
This option is especially
useful when combined with
-.Fl c
+.Fl c ,
+.Fl d ,
or
.Fl s
and a time delay.
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