Intermediate flush to disk

[edermi]

First of all thanks for the nice project. Would it be possible to implement some regular "disk flushes"? I tried to dump a slightly large AD today and - even with the -m option enabled - easily exhausted the 12GB RAM in my VM. Writing information to disk and clearing internal data structures from time to time will probably drastically reduce the memory consumption.

[dirkjanm]

This is kind of a known issue that is still on my to-do but requires a lot of changes. Reason for this is that all the (recursive) group memberships are calculated in-memory so all data has to be loaded first before the structured files can be written to disk. I do have some ideas to make this more efficient but this requires restructuring a major part of the code, which I don't have the time for currently.