That was interesting - "Umm, this change causes major slowdowns in various bits of systemd code, which assumes that getpid() is fast. libsystemd uses getpid() t

That was interesting - "Umm, this change causes major slowdowns in various bits of systemd code, which assumes that getpid() is fast. libsystemd uses getpid() to detect when processes fork". A regular userspace program doesn't need to detect when a fork() has occurred since its whats doing the fork().