.\"     $OpenBSD: led.4,v 1.1 2001/02/01 03:33:27 jason Exp $
.\"
.\" Copyright (c) 2001 Jason L. Wright (jason@thought.net)
.\" All rights reserved.
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.Dd January 31, 2001
.Dt LED 4 sparc
.Os
.Sh NAME
.Nm led
.Nd SPARC LED driver
.Sh SYNOPSIS
.Cd "led0 at mainbus0                              " Pq "sun4"
.Cd "led0 at obio0                                 " Pq "sun4m: 4/600"
.Sh DESCRIPTION
The
.Nm
driver provides a indicator of load average based on blinking of the
LEDs on some systems.
The pattern takes one second per whole number of load average to repeat.
The LED must be explicitly enabled with the
.Xr sysctl 3
variable
.Nm machdep.led_blink .
.Sh SEE ALSO
.Xr sysctl 3 ,
.Xr sysctl 8
.Sh HISTORY
.Ox
support for the
.Nm
first appeared in
.Ox 2.3 .