coretemp(4)

coretemp4

Device driver for intel core on-die digital thermal sensor

Usage

To compile this driver into the kernel, place the following line in your kernel configuration file:

device coretemp

Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

coretemp_load="YES"

Overview

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

The coretemp driver reports each core's temperature through a sysctl node in the corresponding CPU device's sysctl tree, named dev.cpu.%d.temperature.

Releases

45 releases since FreeBSD 6.4-RELEASE; the text changed 32 times.

  1. 6.4
  2. 7.0
  3. 7.1
  4. 7.2
  5. 7.3
  6. 7.4
  7. 8.0
  8. 8.1
  9. 8.2
  10. 8.3
  11. 8.4
  12. 9.0
  13. 9.1
  14. 9.2
  15. 9.3
  16. 10.0
  17. 10.1
  18. 10.2
  19. 10.3
  20. 10.4
  21. 11.0
  22. 11.1
  23. 11.2
  24. 11.3
  25. 11.4
  26. 12.0
  27. 12.1
  28. 12.2
  29. 12.3
  30. 12.4
  31. 13.0–13.2
  32. 13.3–13.5
  33. 14.0–16.0

History

The coretemp driver first appeared in FreeBSD 7.0.

Authors

The coretemp driver was written by Rui Paulo ⟨[email protected]⟩ as part of a Google Summer of Code project. This manual page was written by Dag-Erling Smørgrav ⟨[email protected]⟩.

From base 16.0-CURRENT-20261027-61c70dc16a79 in FreeBSD 16.0-CURRENT (2026-10-27). Parsed by carta from the page's mdoc source.