An anonymous reader writes: DragonFly BSD 3.2 has been released. Among many changes, "Significant work has gone into the scheduler to improve performance, using postgres benchmarking as a measure. See the PDF of graphed results to see the improvements. DragonFly should be now one of the best selections for Postgres and other databases." At any rate, DragonFly now comes very close to Scientific Linux and significantly outperforms the other BSDs.