It'd be interesting to see these compared to locking versions. The benchmarks, particularly on windows, show that the library is young and still needs some algorithmic tweaks, but in any case it's great that there's an open source implementation of algorithms that have a reputation of being difficult to get correct.
Presumably the benchmarks would indicate immaturity by being slow; but it's not obvious what the benchmarks can be compared with. Are there other implementations of the same algorithm, with identical benchmarks?
