93 lines
2.9 KiB
Groff
93 lines
2.9 KiB
Groff
.\" $NetBSD: pmc.1,v 1.1 2000/10/24 23:54:31 thorpej Exp $
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.\"
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.\" Copyright (c) 2000 Zembu Labs, Inc.
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.\" All rights reserved.
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.\"
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.\" Author: Jason R. Thorpe <thorpej@zembu.com>
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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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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by Zembu Labs, Inc.
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.\" 4. Neither the name of Zembu Labs nor the names of its employees may
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.\" be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY ZEMBU LABS, INC. ``AS IS'' AND ANY EXPRESS
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.\" OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WAR-
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.\" RANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DIS-
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.\" CLAIMED. IN NO EVENT SHALL ZEMBU LABS BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd October 24, 2000
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.Dt PMC 1
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.Os NetBSD
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.Sh NAME
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.Nm pmc
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.Nd performance counter interface for command execution
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.Sh SYNOPSIS
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.Nm ""
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.Fl h
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.Nm ""
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.Fl C
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.Nm ""
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.Fl c
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.Ar event
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.Ar command
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.Oo
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.Ar options
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.Ar ...
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.Oc
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.Sh DESCRIPTION
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.Nm
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is a means of using a processor's performance counter facility to
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measure various aspects of a program's execution. It is meant to
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be used in a fashion similar to
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.Xr time 1 .
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.Pp
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The arguments are as follows:
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.Bl -tag -width -indent
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.It Fl h
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Display a list of performance counter events available on the system.
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.It Fl C
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Cancel any performance counters that are currently running.
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.It Fl c Ar event
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Count the event specified by
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.Ar event
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while running the command.
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.El
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.Sh SEE ALSO
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.Xr time 1
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.Sh HISTORY
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The
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.Nm
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command first appeared in
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.Nx 1.6 .
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.Sh AUTHORS
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The
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.Nm
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command was written by
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.An Frank van der Linden
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.Aq fvdl@wasabisystems.com .
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The kernel support for reading performance counters on the i386
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architecture was written by
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.An Jason R. Thorpe
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.Aq thorpej@zembu.com .
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.Sh BUGS
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The
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.Nm
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command currently only supports 686-class performance counters on
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the i386 architecture.
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