Why 100% loading of kworker?

Question

linux

CPU usage has suddenly increased. Only docker and mongi replica are running on the host.

It turned out that kworker hangs in the processes and consumes almost the entire processor.
Primary googling led to diagnostics using the perf utility. It turned out like this:

perf record -g -a sleep 10
perf report

There are no anomalies in the mongo and disk metrics.
Where can you dig?

Answer 1

Here it is recommended to update the kernel version and load the system less.
If Monga loads, then you need to limit the load on it or limit the CPU of the Docker container.
There is a good utility for system monitoring - atop .