How to configure forceful termination of unresponsive processes and manage CPU priorities in Linux?
During the operation of the operating system, situations may arise where applications freeze, consume too many CPU or RAM resources. Linux provides a powerful set of tools to find such problematic processes, change their priorities, or safely terminate them forcibly.
To search for resource-intensive tasks, top and htop utilities are traditionally used, which display a list of processes in real time indicating the percentage of CPU and RAM usage. If a process stops responding to requests, it can be stopped using the kill command by passing it the process PID and the appropriate signal.
Process priority in the kernel scheduler is regulated using nice and renice values. This allows allocating more processor time to critical services or, conversely, limiting the appetites of background resource-intensive tasks so that they do not interfere with system responsiveness.
The typical order of actions when dealing with problematic processes looks like this:
The ability to skillfully manage system resources and signals allows for quickly stabilizing server operation during peak loads or software failures.