2 .\" Copyright (c) 2010 Silicon Graphics International Corp.
3 .\" All rights reserved.
5 .\" Redistribution and use in source and binary forms, with or without
6 .\" modification, are permitted provided that the following conditions
8 .\" 1. Redistributions of source code must retain the above copyright
9 .\" notice, this list of conditions, and the following disclaimer,
10 .\" without modification.
11 .\" 2. Redistributions in binary form must reproduce at minimum a disclaimer
12 .\" substantially similar to the "NO WARRANTY" disclaimer below
13 .\" ("Disclaimer") and any redistribution must be conditioned upon
14 .\" including a substantially similar Disclaimer requirement for further
15 .\" binary redistribution.
18 .\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 .\" "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 .\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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25 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
26 .\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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30 .\" ctlstat utility man page.
32 .\" Author: Ken Merry <ken@FreeBSD.org>
34 .\" $Id: //depot/users/kenm/FreeBSD-test2/usr.bin/ctlstat/ctlstat.8#2 $
41 .Nd CAM Target Layer statistics utility
58 utility provides statistics information for the CAM Target Layer.
59 The first display (except for dump and JSON modes) shows average statistics
61 Subsequent displays show average statistics during the measurement
64 The options are as follows:
68 This displays separate columns with the total read and write output,
69 and a combined total column that also includes non I/O operations.
71 Display statistics this many times.
73 Disable CPU statistics display.
75 Display DMA operation time (latency) instead of overall I/O time (latency).
78 Dump statistics every 30 seconds in a text format suitable for parsing.
79 No statistics are computed in this mode, only raw numbers are displayed.
81 Suppress display of the header.
84 Dump statistics every 30 seconds in JavaScript Object Notation (JSON) format.
85 No statistics are computed in this mode, only raw numbers are displayed.
88 Dump statistics in a format suitable for ingestion into Prometheus.
89 When invoked with this option,
91 dumps once, regardless of the
94 This option is especially useful when invoked by
98 for an example configuration.
100 Request statistics for the specified LUN.
102 Display statistics for this many devices.
104 Request statistics for the specified port.
106 Wait this many seconds in between displays.
107 If this option is not specified,
109 defaults to a 1 second interval.
114 Display total statistics for the system with a one second interval.
116 .Dl ctlstat -d -l 5 -C
118 Display average DMA time for LUN 5 and omit CPU utilization.
120 .Dl ctlstat -n 7 -w 10
122 Display statistics for the first 7 LUNs, and display average statistics
135 .Pa https://prometheus.io/ .
137 Prometheus exposition formats:
138 .Lk https://prometheus.io/docs/instrumenting/exposition_formats/ .
140 .An Ken Merry Aq Mt ken@FreeBSD.org
141 .An Will Andrews Aq Mt will@FreeBSD.org
142 .An Alexander Motin Aq Mt mav@FreeBSD.org