Java limiting resource usage
cpu, cpu-usage, java
Solution
You can use taskset on linux. You can also lower the priority of a process, but unless the CPU(S) are busy, a process will get as much CPU as it can use.
I have a library for dedicating thread to a core, called Java Thread Affinity, but it may have a different purpose to what you have in mind. Can you clarify why you want to do this?
Problem
Is there a way to limit both the number of cores that java uses? And in that same vein, is it possible to limit how much of that core is being used?