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
21 .\" A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 .\" HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
26 .\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
27 .\" IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 .\" POSSIBILITY OF SUCH DAMAGES.
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 $
42 .Nd CAM Target Layer statistics utility
57 utility provides statistics information for the CAM Target Layer.
58 The first display (except for dump and JSON modes) shows average statistics
60 Subsequent displays show average statistics during the measurement
63 The options are as follows:
67 This displays separate columns with the total CTL read and write output,
68 and a combined total column that also includes non I/O operations.
70 Display statistics this many times.
72 Disable display of CPU statistics.
74 Display DMA operation time (latency) instead of overall I/O time (latency).
77 Dump all available statistics every 30 seconds in a text format suitable
79 No statistics are computed in this mode, only raw numbers are displayed.
81 Suppress display of the header.
84 Dump all available statistics every 30 seconds in JavaScript Object
85 Notation (JSON) format.
86 No statistics are computed in this mode, only raw numbers are displayed.
88 Request statistics for the specified LUN.
89 This option is incompatible with total
93 Display statistics for this many devices.
95 Wait this many seconds in between displays.
96 If this option is not specified,
98 defaults to a 1 second interval.
103 Display total statistics for the system with a one second interval.
105 .Dl ctlstat -d -l 5 -C
107 Display average DMA time for LUN 5 and omit CPU utilization.
109 .Dl ctlstat -n 7 -w 10
111 Display statistics for the first 7 LUNs, and display average statistics
121 .An Ken Merry Aq ken@FreeBSD.org
122 .An Will Andrews Aq will@FreeBSD.org