Linux CPU Core Isolation for a Process (opens in new tab)

Today we will isolate a CPU core, deny the Linux scheduler from using it, and assign it to a specific process. It can be used to ensure CPU core availability for critical processes and can be useful in many cases (especially on CPUs with asymmetric cores, like E and P cores in Intel desktop CPUs). In my case, I’m working with Raspberry Pi with my students for the past couple of weeks, so, as an example in this post, we will make the process use a dedicated core on the RPi.