When running an instance where the biggest process is a garbage collected runtime, one does not want any swap at all. If the garbage collector is forced to walk

When running an instance where the biggest process is a garbage collected runtime, one does not want any swap at all. If the garbage collector is forced to walk through all of the pages in swap hunting for live references, performance is terrible. It is better then to have the process see only as much virtual memory as there is RAM in the system. It is a failure of Unix/Linux that there is no sensible API for managing real RAM from the point of view of the process.