Lxc container causing very high load and lots of running processes

We are currently migrating old OpenVZ containers to Proxmox LXC. Today, a few hours after migrating a container, I noticed that the server load had increased significantly and that an extremely large number of processes with state Rs were running in the container. The problem did not resolve itself. Only when I increased the number of cores assigned to the container to 32 did the server load and the many running processes suddenly drop. I then reduced the number of cores back to the previous...

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