# Measuring and comparing kernel sizes - Linux vs the BSDs
Authors: Nova [ミラーワールド] <novaburst@envs.net>
Date: 2021 12 26

I've been measuring the kernel sizes of FreeBSD, Linux, NetBSD and OpenBSD and found surprising but also interesting results.
I took the latest stable versions of each into account, by the way. Below is a list of them (from bigger to smaller).

* Linux 5.15.x = 1.1 GiB
* FreeBSD 13.0-RELEASE = 502.2 MiB
* NetBSD 9.2 = 355.1 MiB
* OpenBSD 7.0 = 297.8 MiB

(Everything else is an excercise left to the reader)