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143 lines
4.2 KiB
Groff
143 lines
4.2 KiB
Groff
.\"
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.\" Copyright (c) 2010 Silicon Graphics International Corp.
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions, and the following disclaimer,
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.\" without modification.
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.\" 2. Redistributions in binary form must reproduce at minimum a disclaimer
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.\" substantially similar to the "NO WARRANTY" disclaimer below
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.\" ("Disclaimer") and any redistribution must be conditioned upon
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.\" including a substantially similar Disclaimer requirement for further
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.\" binary redistribution.
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.\"
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.\" NO WARRANTY
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.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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.\" "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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.\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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.\" A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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.\" HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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.\" IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGES.
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.\"
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.\" ctlstat utility man page.
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.\"
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.\" Author: Ken Merry <ken@FreeBSD.org>
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.\"
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.\" $Id: //depot/users/kenm/FreeBSD-test2/usr.bin/ctlstat/ctlstat.8#2 $
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.\"
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.Dd April 22, 2021
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.Dt CTLSTAT 8
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.Os
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.Sh NAME
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.Nm ctlstat
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.Nd CAM Target Layer statistics utility
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.Sh SYNOPSIS
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.Nm
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.Op Fl t
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.Op Fl c Ar count
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.Op Fl C
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.Op Fl d
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.Op Fl D
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.Op Fl j
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.Op Fl P
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.Op Fl l Ar lun
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.Op Fl n Ar numdevs
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.Op Fl p Ar port
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.Op Fl w Ar wait
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.Sh DESCRIPTION
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The
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.Nm
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utility provides statistics information for the CAM Target Layer.
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The first display (except for dump and JSON modes) shows average statistics
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since system startup.
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Subsequent displays show average statistics during the measurement
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interval.
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.Pp
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The options are as follows:
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.Bl -tag -width 10n
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.It Fl t
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Total mode.
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This displays separate columns with the total read and write output,
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and a combined total column that also includes non I/O operations.
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.It Fl c Ar count
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Display statistics this many times.
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.It Fl C
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Disable CPU statistics display.
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.It Fl d
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Display DMA operation time (latency) instead of overall I/O time (latency).
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.It Fl D
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Text dump mode.
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Dump statistics every 30 seconds in a text format suitable for parsing.
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No statistics are computed in this mode, only raw numbers are displayed.
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.It Fl h
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Suppress display of the header.
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.It Fl j
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JSON dump mode.
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Dump statistics every 30 seconds in JavaScript Object Notation (JSON) format.
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No statistics are computed in this mode, only raw numbers are displayed.
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.It Fl P
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Prometheus dump mode.
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Dump statistics in a format suitable for ingestion into Prometheus.
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When invoked with this option,
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.Nm
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dumps once, regardless of the
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.Fl t
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option.
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This option is especially useful when invoked by
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.Xr inetd 8 .
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See the comments in
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.Pa /etc/inetd.conf
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for an example configuration.
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.It Fl l Ar lun
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Request statistics for the specified LUN.
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.It Fl n Ar numdevs
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Display statistics for this many devices.
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.It Fl p Ar port
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Request statistics for the specified port.
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.It Fl w Ar wait
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Wait this many seconds in between displays.
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If this option is not specified,
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.Nm
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defaults to a 1 second interval.
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.El
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.Sh EXAMPLES
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.Dl ctlstat -t
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.Pp
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Display total statistics for the system with a one second interval.
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.Pp
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.Dl ctlstat -d -l 5 -C
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.Pp
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Display average DMA time for LUN 5 and omit CPU utilization.
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.Pp
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.Dl ctlstat -n 7 -w 10
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.Pp
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Display statistics for the first 7 LUNs, and display average statistics
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every 10 seconds.
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.Sh SEE ALSO
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.Xr cam 3 ,
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.Xr cam 4 ,
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.Xr ctl 4 ,
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.Xr xpt 4 ,
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.Xr camcontrol 8 ,
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.Xr ctladm 8 ,
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.Xr ctld 8 ,
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.Xr iostat 8 ,
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.Lk
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Prometheus project:
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.Pa https://prometheus.io/ .
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.Pp
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Prometheus exposition formats:
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.Lk https://prometheus.io/docs/instrumenting/exposition_formats/ .
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.Sh AUTHORS
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.An Ken Merry Aq Mt ken@FreeBSD.org
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.An Will Andrews Aq Mt will@FreeBSD.org
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.An Alexander Motin Aq Mt mav@FreeBSD.org
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