* backend.filehandles maximum filehandles used
* backend.mmap_window_size mapping window start size
* backend.as_limit address space limit
This needs to be changed to use the lumieraorg_configuration interface.
This shall become a reference of all (most) lumiera configuation keys.
So far this is only prelimary located in the doc/devel dir and will be
moved to the documentation wiki as soon as it becomes available.
