Can anybody tell me how much is the datasize requirement? As soon as the perl process's datasize exceeds the set datasize limit, the process dies (as expected). I had tried w/ limit set to 512 MB (a few mega bytes larger than user-available amount of 491 MB RAM). (Perl is 5.8.7, built w/ debugging & i386-freebsd-64int, running on FreeBSD/i386 6-STABLE.)