NetBSD/usr.bin/pmc/pmc.1

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.\" $NetBSD: pmc.1,v 1.2 2001/06/05 10:08:05 wiz Exp $
.\"
.\" Copyright (c) 2000 Zembu Labs, Inc.
.\" All rights reserved.
.\"
.\" Author: Jason R. Thorpe <thorpej@zembu.com>
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
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.\" 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.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by Zembu Labs, Inc.
.\" 4. Neither the name of Zembu Labs nor the names of its employees may
.\" be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY ZEMBU LABS, INC. ``AS IS'' AND ANY EXPRESS
.\" OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WAR-
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.\"
.Dd October 24, 2000
.Dt PMC 1
.Os
.Sh NAME
.Nm pmc
.Nd performance counter interface for command execution
.Sh SYNOPSIS
.Nm ""
.Fl h
.Nm ""
.Fl C
.Nm ""
.Fl c
.Ar event
.Ar command
.Oo
.Ar options
.Ar ...
.Oc
.Sh DESCRIPTION
.Nm
is a means of using a processor's performance counter facility to
measure various aspects of a program's execution. It is meant to
be used in a fashion similar to
.Xr time 1 .
.Pp
The arguments are as follows:
.Bl -tag -width -indent
.It Fl h
Display a list of performance counter events available on the system.
.It Fl C
Cancel any performance counters that are currently running.
.It Fl c Ar event
Count the event specified by
.Ar event
while running the command.
.El
.Sh SEE ALSO
.Xr time 1
.Sh HISTORY
The
.Nm
command first appeared in
.Nx 1.6 .
.Sh AUTHORS
The
.Nm
command was written by
.An Frank van der Linden
.Aq fvdl@wasabisystems.com .
The kernel support for reading performance counters on the i386
architecture was written by
.An Jason R. Thorpe
.Aq thorpej@zembu.com .
.Sh BUGS
The
.Nm
command currently only supports 686-class performance counters on
the i386 architecture.