CORETEMP(4) | Device Drivers Manual (x86) | CORETEMP(4)

# NAME

`coretemp` — Intel Core on-die digital thermal sensor

# SYNOPSIS

`coretemp* at cpu?`

# DESCRIPTION

The `coretemp` driver provides support for the on-die digital thermal sensor present on Intel Core and newer CPUs.

The temperatures can be observed by using the envsys(4) API or the envstat(8) command. Temperatures are reported for each core separately.

# EVENTS

The `coretemp` driver is able to send a critical event to the powerd(8) daemon. The script /etc/powerd/scripts/sensor_temperature will be executed by the daemon (if running) when the limit has been reached.

# SEE ALSO

envsys(4), envstat(8), powerd(8)

Michael Berktold and Tian Tian (Intel Corporation), CPU Monitoring With DTS/PECI, White Paper, http://edc.intel.com/Download.aspx?id=2612, September 2010.

# HISTORY

The `coretemp` driver first appeared in FreeBSD 7.0. It was later ported to NetBSD 5.0.

# AUTHORS

The `coretemp` driver was written by Rui Paulo <rpaulo@FreeBSD.org> as part of a Google Summer of Code project. It was adapted to NetBSD by Juan Romero Pardines.

February 23, 2010 | NetBSD 11.99