gian

True only if the resource hog process grows progressively, else the daemon is in the same situation and the kernel limits are the only way since it stops the process before.

But yes, a daemon could be an interesting solution

The kernel has a way to assign resources to each and every process, try to google for “Linux kernel limits” or “linux cgroup cpu limit”.

The problem is knowing which process cause the load, but if you cannot even htop, then I doubt a daemon could do something.