Appian Server Configuration

Regarding configuring an Appian Server, we are aware of the following configurations' default/recommended values:

vm.max_map_count=262144
server.conf.processcommon.MAX_EXEC_ENGINE_LOAD_METRIC=120

If we were to fine-tune these values, is there an ideal formula we can follow?

Also, what possibly could be the merits in raising/lowering those values? Meaning which parts of Appian will be affected and how far will it improve Appian performance?