freebsd-dev/usr.sbin/gstat/gstat.8
2005-05-27 00:21:12 +00:00

96 lines
2.6 KiB
Groff

.\" 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 3, 2003
.Dt GSTAT 8
.Os
.Sh NAME
.Nm gstat
.Nd print statistics about GEOM disks
.Sh SYNOPSIS
.Nm
.Op Fl acd
.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 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 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 .
.Sh BUGS
The
.Nm
utility only works interactively.
It should probably detect when it is run non-interactively and produce
simple
.Tn ASCII
text output.
Otherwise, this utility should probably be folded into
.Xr systat 1
which only works interactively and is the obvious utility to run for
various other forms of system statistics.