Description
RSS : Resident Set Size, is the total memory usage of a process on the OS it runs. This is the memory that the JVM uses for all it's memory pools (including direct memory if any).

Having a way to measure it at the begining of the test and at the end would be a good addition to QuickPerf

Implementation ideas
@MeasureRSS will measure RSS at the before and after the test and logged it to the console.

@ExpectRSS will make expectation of the size of the RSS before/after the test and fail the test if needed.