It is also possible to strictly isolate CPUs in a Linux system using the isolcpus boot option which disables load balancing and prevents the scheduler from scheduling any user task or a system service/daemon on the isolated cores unless otherwise told by the task using specific OS interfaces such as sched setaffinity system call or cgroups. However, kernel tasks and daemons are still created and scheduled on each core in a non-configurable way that still causes noise.