> You don't want 64bit userspace is very very slow compared to 32bit. The > only reason you would want 64bit binaries is if a single program needs > to access > 4gigs of memory (note, this has nothing to do with just > having > 4gigs of memory). That's not entirely true. You want 64-bit binaries for iptables, iproute, and things that do ioctl(fd, ENVCTRL_RD_CPU_TEMPERATURE, 0).