Bloody hell.. So I was using my trueNAS box for a build server for buildroot container images (building x86 images on macOS is insanely slow) the build times were excessive still. Figured out the docker setup was using the raid metal. Threw a spare NVME in for docker and more than halved build time Buildroot compiles a ton of C and CPP code depending on requirements and a whole lot of that shit still uses gnu autotools or other slow checks. Each check is a disc read and fuck are they slow especially for single threaded shit like autotools. The build time was at least 50% just that 😠 Plus a ton of read/writes for each compiled unit.