Yep, "using mmap" is worse performance-wise than what database engines do. It's not a suitable interface for shoveling data onto disk in a manner such that you

Yep, "using mmap" is worse performance-wise than what database engines do. It's not a suitable interface for shoveling data onto disk in a manner such that you can say, "I am done writing this to disk," and "This file will never be in an inconsistent state in the event of kill -9 or powerloss," with maximum performance. Also, it's not enough to cry "use mmap," if you don't want a corrupted file. I think your antipathy towards relational databases has more to do with your unwillingness to learn how to use them than anything else. Otherwise you'd be capable of speaking with other people here on their level.