BIOS monitoring goodies ....

David Benfell benfell at
Sun Aug 10 22:52:59 UTC 2014

On Sun, Aug 10, 2014 at 01:00:25PM +0200, Roland Smith wrote:
> On Sat, Aug 09, 2014 at 04:47:29PM -0500, William A. Mahaffey III wrote:
> > 
> > 
> > .... Linux has myriad tools, utilities, apps, etc. (hddtemp, lmsensors, 
> > jwclock, etc.) for monitoring info from the BIOS &/or OS hardware info 
> > .... Surely there must be some such for FreeBSD, could someone point me 
> > to them :-) ? TIA ....
> For watching the CPU temperature you've got coretemp(4) for Intel CPUs and
> amdtemp(4) for AMD CPUs. Both report their values through sysctl(8), and both
> can be loaded as modules. N.B: they're not built into the GENERIC kernel.
> Just kldload the appropriate module and then do `sysctl -a|grep temperature`.
coretemp *does* seem to be built into the GENERIC kernel, or at least
that's what it told me when I attempted a kldload. I had also earlier
looked at the temperatures with a similar command. This is stable/10,
by the way.

For what it's worth, CPU temperatures seem to be entirely reasonable.
When I was running memtest86+, it reported temperatures around 40-45
C. The sysctl command now returns:

hw.acpi.thermal.tz0.temperature: 27.8C
hw.acpi.thermal.tz1.temperature: 29.8C
dev.cpu.0.temperature: 40.0C
dev.cpu.1.temperature: 40.0C
dev.cpu.2.temperature: 40.0C
dev.cpu.3.temperature: 40.0C

> If you have an ASUSTeK motherboard, the aibs(4) driver gives information about
> temperatures, voltages and fan speed.

Appreciated. I have added this to the loader.conf on my notebook.

> You can use smartctl from the sysutils/smartmontools package to monitor the
> health of harddisks. The disk temperature is given as the attribute name
> “Temperature_Celsius” when you run `smartctl -a /dev/<disk>`.

This will be the next step (I'm still restoring the ports tree).
> E.g. the sysutils/conky port can be used as a system monitor.
I'm short a mouse at the moment, so I can't use X, but as I sort my
way through this, that can happen later.


David Benfell <benfell at>
See if you don't understand the
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