Feature request: Test under memory load

[Danack]

the benchmark results are likely to be reasonably different when a server is under heavy load vs when it's free to use all the resources of a machine.

Incorporating something like https://github.com/CMU-SAFARI/Cache-Memory-Hog could provide quite different results. Though it might be a bit complicated as I guess you'd need to make sure it was running on the same core.