Killed: out of swap space

[networkninja]

Hello,

I have an Atom board on 2.2 embedded/NanoBSD with 3 gigabit interfaces running a DMZ, 100 Mbit WAN and a Gbit LAN (trunk port). The server has 4GB of RAM and after a month or two of uptime I start seeing this in the logs:

kernel: pid 50567 (charon), uid 0, was killed: out of swap space

I'm looking at the status dashboard and I've never seen memory usage go over 7% of the 4GB. Last night the box completely died, and when I went to reboot the USB drive was corrupt. I had to re-image it and restore a config from backup.

It seems there is a hard cap on how much RAM the embedded version can access or something similar. Does anyone know what is going on and how I can fix it?

Thanks in advance for any insight.

[cmb]

also posted here:
https://www.reddit.com/r/PFSENSE/comments/320qhb/killed_out_of_swap_space/

which is where I originally replied.