Just to expand upon this, if you are running HAOS, you can get more accurate stats by running the below in the Individual program call instead of agent access after enabling SSH access to the host as mentioned here:
(Assuming check_mk_agent has been copied over to /config/check_mk_agent)
ssh -p 22222 root@$HOSTADDRESS$ docker exec homeassistant /config/check_mk_agent
Before this, using the SSH add-on, my Memory utilisation was like 10MB which didn’t seem right… Now it shows:
Similar for TCP Connections which always showed 1