I'm trying to get to the bottom of an issue where unraid seems to get stuck at 100% CPU usage semi-regularly. What's odd is that the unraid main screen shows 100% CPU usage across all cores while the Dynamix System Stats plugin only seems to show 50% usage.
Opening a terminal and running top shows that the CPU usage seems to be coming from 3 main processes: kswapd0, unraidd & loop2.
What are the kswapd0 and loop2 processes? Should they be using this much CPU? Can they be safely killed/restarted?