Observations

• The floating point performance on FreeBSD 7.0 is abysmal, in particular the Neural Net test. I have no idea why...
• OpenSolaris fairs fairly well, except on the integer tests, where it's the slowest by a wide margin.
• The Fedora distributions are fairly consistent in their performance, although it seems that performance is overall getting slightly worse with newer releases.
• Ubuntu v8.10 seems to be the overall most consistently fast system. It's the winner of the floating point tests, and top 3 in both integer and memory.

Here is the same data as above, but organized by the three ByteMark metrics (memory, integer and float).

Finally, here are all the individual ByteMark tests, for all distributions. You can see the numbers in details on the raw data pages as well.