Intermitten swap_pager_getswapspace(4): failed ?

  • I have several pfsense firewalls running. They all have 256 meg of ram and are pushing 2-3Mbps through them wiithout any noticeable issues other than the occasional "swap_pager_getswapspace(4): failed".
    By the time i notice this i go in the firewall console and run swapinfo. The swap partition is not full, at least when i get in to check it. Is their any tweak that i should do to elliminate the issue. I presume that some event took place that is cause the firewall to consume all of its memory and start using swap. Any ideas?