Software

OpenBSD Compile Custom Kernel

OpenBSD

Let’s Compile a Custom Kernel for OpenBSD … and let’s check if we can tune the Process it with multiple Processors.

get Sources and prepare Custom Kernel

cd /usr/src
ftp https://cdn.openbsd.org/pub/OpenBSD/$(uname -r)/sys.tar.gz
tar xfz sys.tar.gz
rm xfz sys.tar.gz
cd /sys/arch/$(uname -m)/conf
cp GENERIC.MP CUSTOM.MP
config CUSTOM.MP
cd ../compile/CUSTOM.MP

-> with config CUSTOM.MP, you can enable disable Components which will be built into your Custom Kernel. Wlan Drives for a VirtualServer, as example, does not make sense.