By the way, about benchmarks Andy is (secretely) working on this: https://svn.apache.org/repos/asf/incubator/jena/Experimental/JenaPerf/trunk/ I have not time to try it yet, but it seems very interesting. :-)
Which is unfinished, unstable, and unreliable and does not work with SDB yet.
Do not expect it to work.
Andy
