David Rhodus posted some initial results with using a 3Ware 9500 RAID controller on DragonFly. The summarized version of the thread is this: transfer rates were 30 MB/s with FreeBSD 5.3, and 152 MB/s with DragonFly.
I couldn’t find where numbers for FreeBSD 5.3 were mentioned.
in a followup, but to be fair, he said it was an old freebsd and he will redo tests with freebsd
DragonFly BSD Digest