francesco, it would also help if you could post more context about why the out-of-memory killer was activated. see the answer to this posting:
http://unix.stackexchange.com/questions/128642/debug-out-of-memory-with-var-log-messages and post any oom/total_vm results you find: sudo grep oom /var/log/* sudo grep total_vm /var/log/* m -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to weewx-user+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.