.\" $NetBSD: coretemp.4,v 1.5 2020/11/14 20:04:46 wiz Exp $
.\"-
.\" Copyright (c) 2007 Juan Romero Pardines.
.\" Copyright (c) 2007 Dag-Erling Coïdan Smørgrav
.\" All rights reserved.
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.\" $FreeBSD: src/share/man/man4/coretemp.4,v 1.4 2007/10/15 20:00:19 netchild Exp $
.\"
.Dd February 23, 2010
.Dt CORETEMP 4 x86
.Os
.Sh NAME
.Nm coretemp
.Nd Intel Core on-die digital thermal sensor
.Sh SYNOPSIS
.Cd "coretemp* at cpu?"
.Sh DESCRIPTION
The
.Nm
driver provides support for the on-die digital thermal sensor present
on Intel Core and newer CPUs.
.Pp
The temperatures can be observed by using the
.Xr envsys 4
.Tn API
or the
.Xr envstat 8
command.
Temperatures are reported for each core separately.
.Sh EVENTS
The
.Nm
driver is able to send a
.Em critical
event to the
.Xr powerd 8
daemon.
The script
.Pa /etc/powerd/scripts/sensor_temperature
will be executed by the daemon (if running) when the limit has been reached.
.Sh SEE ALSO
.Xr envsys 4 ,
.Xr envstat 8 ,
.Xr powerd 8
.Rs
.%A Michael Berktold
.%A Tian Tian (Intel Corporation)
.%T CPU Monitoring With DTS/PECI, White Paper
.%D September 2010
.%U http://edc.intel.com/Download.aspx?id=2612
.Re
.Sh HISTORY
The
.Nm
driver first appeared in
.Fx 7.0 .
It was later ported to
.Nx 5.0 .
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written by
.An Rui Paulo Aq Mt rpaulo@FreeBSD.org
as part of a Google Summer of Code project.
It was adapted to
.Nx
by
.An Juan Romero Pardines .