Is it worth upgrading to 8.0 to run mySQL or PostgreSQL databases? Graphs say more than 1000 words

…what causes this massive speedup? FreeBSD 8 have superpages support turned on by default, and there was some hacking on the ULE schedulet too, which now can recognize the CPUs’ and their caches’ hierarchy and take those into account during its work.

For for performance graphs, go here.