[jnordwick]

I was talking mostly about FOSS.

I've actually never heard of ExtremeDB. It's only in-memory though, so it can it even handle the huge datasets that timeseries/column dbs handle? I don't see any performance tests for it either.

[shaklee3]

It does in-memory, hybrid, and disk. It's typically benchmarked versus kdb+ only:

http://financial.mcobject.com/downloads/white-papers-collate...