CORETEMP(4)

💖 CORETEMP 💖

okay bestie, gather round, we're talking about coretemp — that's the device driver for the Intel Core on-die digital thermal sensor, and yes it's a section 4 (kernel interfaces) moment. this is the freebsd girlies' way of asking the cpu "hey babe how hot are you rn" and getting an actual answer. 🌡️✨

✨ SYNOPSIS ✨

so there's two ways to get this vibe into your life. option one, you bake it straight into the kernel — drop this line into your kernel configuration file:

device coretemp

or option two, be a module girlie and load it at boot time instead. for that you go to loader.conf(5) and add:

coretemp_load="YES"

both ate, pick your fighter. 💅

🌸 DESCRIPTION 🌸

the coretemp driver provides support for the on-die digital thermal sensor that lives inside Intel Core and newer CPUs. it's literally built into the chip. main character sensor energy, no cap. 🧚

and the way it tells you things? it reports each core's temperature through a sysctl node sitting in the corresponding CPU device's sysctl tree. that node is named:

dev.cpu.%d.temperature

so like, one per core, each one spilling the tea about how warm that specific core is. obsessed. 🔥

👀 SEE ALSO 👀

• sysctl(8)

📜 HISTORY 📜

the coretemp driver first appeared in FreeBSD 7.0. it's been giving thermal readings since before some of y'all were born. iconic behavior. 👑

🫶 AUTHORS 🫶

the coretemp driver was written by Rui Paulo <rpaulo@FreeBSD.org> as part of a Google Summer of Code project. summer of code AND a whole driver?? slay. 🎀

this manual page was written by Dag-Erling Smørgrav <des@FreeBSD.org>. thank you for your service, we are forever grateful. 💜

💀 real talk though: this page is from the Debian crew and it's dated August 23, 2007, which is giving vintage in the best way. anyway bestie go check your temps, stay cool (literally), and remember — dev.cpu.%d.temperature is right there whenever you need it. 🦋🌈⭐