At least on linux unprivileged processes can lock a limited amount of memory. > Since Linux 2.6.9, no limits are placed on the amount of memory that a privileg

At least on linux unprivileged processes can lock a limited amount of memory. > Since Linux 2.6.9, no limits are placed on the amount of memory that a privileged process can lock and the RLIMIT_MEMLOCK soft resource limit instead defines a limit on how much memory an unprivileged process may lock.