freebsd/usr.sbin/gstat/gstat.8

.\" Copyright (c) 2003 Giorgos Keramidas
.\" 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.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE.
.\"
.\" $FreeBSD$
.\"
.Dd March 12, 2009
.Dt GSTAT 8
.Os
.Sh NAME
.Nm gstat
.Nd print statistics about GEOM disks
.Sh SYNOPSIS
.Nm
.Op Fl abcd
.Op Fl f Ar filter
.Op Fl I Ar interval
.Sh DESCRIPTION
The
.Nm
utility can be used to monitor I/O transactions of
.Xr geom 4
devices.
.Pp
The options are as follows:
.Bl -tag -width indent
.It Fl a
Only display providers that are at least 0.1% busy.
.It Fl b
Batch mode.
Collect numbers, print and exit.
Default if stdout is not a tty.
.It Fl c
Enable display of
.Xr geom 4
consumers too.
The default is to show statistics only for
.Xr geom 4
producers.
.It Fl d
Enable display of statistics for delete
.Pq Dv BIO_DELETE
operations.
.It Fl f Ar filter
A regular expression that can be used to only show statistics for some
devices.
Only devices with the names matching
.Ar filter
will be displayed.
The format of the regular expression is described in
.Xr re_format 7 .
.It Fl I Ar interval
Refresh the
.Nm
display every
.Ar interval
microseconds.
Adding a suffix of
.Cm s , ms ,
or
.Cm us
(the default) indicates that the update interval is specified in
seconds, milliseconds, or microseconds, respectively.
.El
.Sh EXIT STATUS
.Ex -std
.Sh SEE ALSO
.Xr systat 1 ,
.Xr geom 4 ,
.Xr iostat 8 ,
.Xr vmstat 8
.Sh HISTORY
A
.Nm
utility appeared in
.Fx 5.0 .
Add a small manpage. 2003-03-22 09:44:56 +00:00			`.\" Copyright (c) 2003 Giorgos Keramidas`
			`.\" 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.`
			`.\" 2. Redistributions in binary form must reproduce the above copyright`
			`.\" notice, this list of conditions and the following disclaimer in the`
			`.\" documentation and/or other materials provided with the distribution.`
			`.\"`
			.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
			`.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE`
			`.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE`
			`.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE`
			`.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE.`
			`.\"`
			`.\" $FreeBSD$`
			`.\"`
o Turn the batch mode on if stdout is not tty. Submitted by: vsevolod MFC after: 1 week 2009-03-12 13:17:46 +00:00			`.Dd March 12, 2009`
Add a small manpage. 2003-03-22 09:44:56 +00:00			`.Dt GSTAT 8`
			`.Os`
			`.Sh NAME`
			`.Nm gstat`
Sigh, I guess this manpage used cat(1) as a template? Otherwise, fix the manpage to not use the second person, and add two missing punctuation bits. 2003-05-31 18:19:50 +00:00			`.Nd print statistics about GEOM disks`
Add a small manpage. 2003-03-22 09:44:56 +00:00			`.Sh SYNOPSIS`
			`.Nm`
o Sync synopsis with reality. Remove BUG section -- there is a batch mode in gpart(8) now. 2009-03-12 13:03:33 +00:00			`.Op Fl abcd`
- Add support for filtering the the list of providers by a regular expression, which makes it possible to only see interesting providers. "f" is used inside gstat to set a filter, "F" is used to remove current filter. - Do not print some uninteresting values in the gstat title line. - Do not print past the end of the screen. - Read multiple keystrokes per "wait" when gstat is running. - Remove a redundant != check, right after check of NULL against the same variable ("gid"). - Use sysexits.h. - Do not link against libkvm and libsbuf, they are not actually used. - Fix a few style(9) issues where I had to touch nearby code anyway. Approved by: cperciva (mentor) MFC after: 2 weeks 2006-05-20 19:17:47 +00:00			`.Op Fl f Ar filter`
Add a small manpage. 2003-03-22 09:44:56 +00:00			`.Op Fl I Ar interval`
			`.Sh DESCRIPTION`
			`The`
			`.Nm`
			`utility can be used to monitor I/O transactions of`
			`.Xr geom 4`
			`devices.`
			`.Pp`
			`The options are as follows:`
			`.Bl -tag -width indent`
Add an '-a' switch to only display providers that are at least 0.1% busy. OK'ed by: phk 2004-10-10 16:13:11 +00:00			`.It Fl a`
			`Only display providers that are at least 0.1% busy.`
- Allow gstat to print values to different kind of outputs. - Introduce batch mode, where gstat will collect the numbers, print them, and exit. - Document batch mode in the gstat man page. Submitted by: anders 2008-10-07 10:25:27 +00:00			`.It Fl b`
o Turn the batch mode on if stdout is not tty. Submitted by: vsevolod MFC after: 1 week 2009-03-12 13:17:46 +00:00			`Batch mode.`
			`Collect numbers, print and exit.`
			`Default if stdout is not a tty.`
Add a small manpage. 2003-03-22 09:44:56 +00:00			`.It Fl c`
			`Enable display of`
			`.Xr geom 4`
			`consumers too.`
			`The default is to show statistics only for`
			`.Xr geom 4`
			`producers.`
Add -d flag to monitor BIO_DELETE operations too 2004-02-15 09:34:08 +00:00			`.It Fl d`
Markup nits. 2004-06-04 19:23:12 +00:00			`Enable display of statistics for delete`
			`.Pq Dv BIO_DELETE`
			`operations.`
- Add support for filtering the the list of providers by a regular expression, which makes it possible to only see interesting providers. "f" is used inside gstat to set a filter, "F" is used to remove current filter. - Do not print some uninteresting values in the gstat title line. - Do not print past the end of the screen. - Read multiple keystrokes per "wait" when gstat is running. - Remove a redundant != check, right after check of NULL against the same variable ("gid"). - Use sysexits.h. - Do not link against libkvm and libsbuf, they are not actually used. - Fix a few style(9) issues where I had to touch nearby code anyway. Approved by: cperciva (mentor) MFC after: 2 weeks 2006-05-20 19:17:47 +00:00			`.It Fl f Ar filter`
			`A regular expression that can be used to only show statistics for some`
			`devices.`
Language tweak. 2006-09-29 16:51:29 +00:00			`Only devices with the names matching`
- Add support for filtering the the list of providers by a regular expression, which makes it possible to only see interesting providers. "f" is used inside gstat to set a filter, "F" is used to remove current filter. - Do not print some uninteresting values in the gstat title line. - Do not print past the end of the screen. - Read multiple keystrokes per "wait" when gstat is running. - Remove a redundant != check, right after check of NULL against the same variable ("gid"). - Use sysexits.h. - Do not link against libkvm and libsbuf, they are not actually used. - Fix a few style(9) issues where I had to touch nearby code anyway. Approved by: cperciva (mentor) MFC after: 2 weeks 2006-05-20 19:17:47 +00:00			`.Ar filter`
			`will be displayed.`
			`The format of the regular expression is described in`
			`.Xr re_format 7 .`
Add a small manpage. 2003-03-22 09:44:56 +00:00			`.It Fl I Ar interval`
			`Refresh the`
			`.Nm`
			`display every`
			`.Ar interval`
			`microseconds.`
Sigh, I guess this manpage used cat(1) as a template? Otherwise, fix the manpage to not use the second person, and add two missing punctuation bits. 2003-05-31 18:19:50 +00:00			`Adding a suffix of`
			`.Cm s , ms ,`
Add a small manpage. 2003-03-22 09:44:56 +00:00			`or`
			`.Cm us`
Sigh, I guess this manpage used cat(1) as a template? Otherwise, fix the manpage to not use the second person, and add two missing punctuation bits. 2003-05-31 18:19:50 +00:00			`(the default) indicates that the update interval is specified in`
			`seconds, milliseconds, or microseconds, respectively.`
Add a small manpage. 2003-03-22 09:44:56 +00:00			`.El`
Added the EXIT STATUS section where appropriate. 2005-01-17 07:44:44 +00:00			`.Sh EXIT STATUS`
Add a small manpage. 2003-03-22 09:44:56 +00:00			`.Ex -std`
			`.Sh SEE ALSO`
Add cross-references to iostat, systat and vmstat. 2005-05-27 00:21:12 +00:00			`.Xr systat 1 ,`
			`.Xr geom 4 ,`
			`.Xr iostat 8 ,`
			`.Xr vmstat 8`
Add a small manpage. 2003-03-22 09:44:56 +00:00			`.Sh HISTORY`
			`A`
			`.Nm`
			`utility appeared in`
			`.Fx 5.0 .`