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Monitoring CPU Temperature on FreeBSD

Introduction

Here's how to monitor the temperature of all your CPU cores on FreeBSD.

Configuration

Fortunately, there's nothing to install. We'll simply load the temperature module:

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kldload coretemp

If you want to enable it each time your machine boots:

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# /boot/loader.conf
coretemp_load="YES"

PS: For AMD users, there are also the k8temp and amdtemp modules available.

Usage

Now, you can easily check your temperatures:

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> sysctl dev.cpu | grep temperature
dev.cpu.0.temperature: 48.0C
dev.cpu.1.temperature: 50.0C
dev.cpu.2.temperature: 47.0C
dev.cpu.3.temperature: 46.0C

References

http://blog.freelooser.fr/2009/05/temperature-du-cpu-sous-freebsd.html