OH2 from OpenHABian crashing regularly

Setup, Configuration and Use Runtime
1

Here’s some basics:

Release = Ubuntu 16.04.4 LTS

Kernel = Linux 3.10.105-0-pine64-longsleep

Platform = Pine A64+ 2GB Rev C Board

Uptime = 1 day(s). 9:18:44

CPU Usage = 26.25 % avg over 4 cpu(s) (1 core(s) x 4 socket(s))

CPU Load = 1m: 1.23, 5m: 1.15, 15m: 1.14

Memory = Free: 1.03GB (53%), Used: 0.90GB (47%), Total: 1.94GB

Swap = Free: 0.97GB (100%), Used: 0.00GB (0%), Total: 0.97GB

Root = Free: 111.58GB (98%), Used: 1.89GB (2%), Total: 118.29GB

Updates = 0 apt updates available.

Sessions = 2 sessions

Processes = 102 running processes of 32768 maximum processes

Pretty basic OH2 install via OpenHABian on a Pine64 board. Runs for about a day and then I see this in syslog:

Mar 12 19:55:31 pine64 karaf[683]: Exception in thread “JmDNS(JmDNS-IP-1).State.Timer” java.lang.OutOfMemoryError: Java heap space
Mar 12 19:55:48 pine64 karaf[683]: Exception in thread “upnp-async-5612” Exception in thread “upnp-main-1” java.lang.OutOfMemoryError: Java heap space
Mar 12 19:56:13 pine64 karaf[683]: Exception in thread “upnp-async-5614” java.lang.OutOfMemoryError: Java heap space
Mar 12 19:56:22 pine64 karaf[683]: java.lang.OutOfMemoryError: Java heap space
Mar 12 19:56:26 pine64 karaf[683]: Exception in thread “upnp-main-2” java.lang.OutOfMemoryError: Java heap space
Mar 12 19:58:38 pine64 karaf[683]: Exception in thread “upnp-async-5590” java.lang.OutOfMemoryError: Java heap space
Mar 12 19:58:42 pine64 karaf[683]: Exception in thread “upnp-async-5616” java.lang.OutOfMemoryError: Java heap space

This install is configured to control one device via TCP. It gets triggered once or twice a day and otherwise does NOTHING. But it’s dying anyway. What should I be looking at next? Completely new to OH2.

–Donnie

2

Anyone got any time to help debug this? For some reason my system seems to be running out of memory and OH locks up. So far the only way I actually seem to be able to get it back is with a full reboot. Trying a ‘sudo service openhab2 stop’ just hangs, as does a ‘start.’

Looks like a massive memory problem as Java is running out of memory. But my OH2 config is so simple I can’t imagine it’s my fault. It works fine until it seems like some kind of leak just kills it.

–Donnie