This Benchmark mod can be used on any map, load it up as the sole mod on your server. The Mod will Automatically run 10 tests, the results of which will be written to your -ServerGameLog so ensure it is enabled. After the 10 tests have run it will collate your results and restart the server.
Warning - This benchmark can take at least 25 minutes to complete and will stress your hardware.
Mod is broken currently and I can't get it cooked to fix it.