Tracking things like VM usage over time is possible, however I have avoided such things, as the exported data gets messy. I may even remove the peak VM usage…
I cant actually retrieve the memory latency information. I can get the memory speed. It is a fair question and the exact reason why I have included it. From my own experience some applications it makes almost no difference whilst others it can double performance. - This is the way we can find out. latency tends to go up with with speed.
I agree some thought needs to go into data sets, and the stress that is put on the systems, and that will require varying loads to get the desired results.