Is it me or is FreeBSD slower on Xen than Linux?

[rainer at ultra-secure.de]

Just a little update.

Using FreeBSD 11.0-RC1 (amd64) on a 2vCPU 8GB VM, I can complete the 
task in 12s.
However, using PHP 5.6 and MySQL 5.6 from FreeBSD's pkg-repo.
I don't have packages for FreeBSD 11, yet, and the default versions in 
the official packages are different than mine - my poudriere is still on 
FreeBSD 10.1.

So, it's unclear if FreeBSD 11 is actually faster.