I got a problem with a KVM-virtualized server (Proxmox-based), running on Debian 7.8 and PLESK. Sometimes there are loads > 200 (sic!) and I just do not get the reason why.
The monitoring shows the increasing load (at first: 19, some minutes later: 50, some minutes later: 200) but the logs do not show anything for this timeframe.
I searched syslog and messages and all services are running fine.
If I try to connect via VNC I get messages like
kernel hung tasks. Task XYZ stuck for 120 sec.
Any idea what I could do here?