Just the PID 1 manager is multiple times larger in LoC than any alternative. There is no metric in which systemd is more lightweight that I could find.
I'm not sure this is true in practice, if we're counting init scripts themselves. Which we should, because init scripts are code and they often re-implement standard systemd features. Usually in wonky, broken ways.
I'm not sure this is true in practice, if we're counting init scripts themselves. Which we should, because init scripts are code and they often re-implement standard systemd features. Usually in wonky, broken ways.