Kernel builds have been getting slower, not faster. You aren't going to make up the gains, because other things will slow you down again. Therefore, this improv

Kernel builds have been getting slower, not faster. You aren't going to make up the gains, because other things will slow you down again. Therefore, this improvement will be at least a linear improvement in kernel build times for the foreseeable future, if not possibly supra-linear depending on how things work out.