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.\"
.\" Copyright (c) 2010 Silicon Graphics International Corp.
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions, and the following disclaimer,
.\" without modification.
.\" 2. Redistributions in binary form must reproduce at minimum a disclaimer
.\" substantially similar to the "NO WARRANTY" disclaimer below
.\" ("Disclaimer") and any redistribution must be conditioned upon
.\" including a substantially similar Disclaimer requirement for further
.\" binary redistribution.
.\"
.\" NO WARRANTY
.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
.\" "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
.\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
.\" A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
.\" HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
.\" IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGES.
.\"
.\" ctlstat utility man page.
.\"
.\" Author: Ken Merry <ken@FreeBSD.org>
.\"
.\" $Id: //depot/users/kenm/FreeBSD-test2/usr.bin/ctlstat/ctlstat.8#2 $
.\" $FreeBSD$
.\"
.Dd March 8, 2015
.Dt CTLSTAT 8
.Os
.Sh NAME
.Nm ctlstat
.Nd CAM Target Layer statistics utility
.Sh SYNOPSIS
.Nm
.Op Fl t
.Op Fl c Ar count
.Op Fl C
.Op Fl d
.Op Fl D
.Op Fl j
.Op Fl l Ar lun
.Op Fl n Ar numdevs
.Op Fl w Ar wait
.Sh DESCRIPTION
The
.Nm
utility provides statistics information for the CAM Target Layer.
The first display (except for dump and JSON modes) shows average statistics
since system startup.
Subsequent displays show average statistics during the measurement
interval.
.Pp
The options are as follows:
.Bl -tag -width 10n
.It Fl t
Total mode.
This displays separate columns with the total CTL read and write output,
and a combined total column that also includes non I/O operations.
.It Fl c Ar count
Display statistics this many times.
.It Fl C
Disable CPU statistics display.
.It Fl d
Display DMA operation time (latency) instead of overall I/O time (latency).
.It Fl D
Text dump mode.
Dump all available statistics every 30 seconds in a text format suitable
for parsing.
No statistics are computed in this mode, only raw numbers are displayed.
.It Fl h
Suppress display of the header.
.It Fl j
JSON dump mode.
Dump all available statistics every 30 seconds in JavaScript Object
Notation (JSON) format.
No statistics are computed in this mode, only raw numbers are displayed.
.It Fl l Ar lun
Request statistics for the specified LUN.
This option is incompatible with total
.Fl ( t )
mode.
.It Fl n Ar numdevs
Display statistics for this many devices.
.It Fl w Ar wait
Wait this many seconds in between displays.
If this option is not specified,
.Nm
defaults to a 1 second interval.
.El
.Sh EXAMPLES
.Dl ctlstat -t
.Pp
Display total statistics for the system with a one second interval.
.Pp
.Dl ctlstat -d -l 5 -C
.Pp
Display average DMA time for LUN 5 and omit CPU utilization.
.Pp
.Dl ctlstat -n 7 -w 10
.Pp
Display statistics for the first 7 LUNs, and display average statistics
every 10 seconds.
.Sh SEE ALSO
.Xr cam 3 ,
.Xr cam 4 ,
.Xr ctl 4 ,
.Xr xpt 4 ,
.Xr camcontrol 8 ,
.Xr ctladm 8 ,
.Xr iostat 8
.Sh AUTHORS
.An Ken Merry Aq ken@FreeBSD.org
.An Will Andrews Aq will@FreeBSD.org
|
