Bug#596577: please increase NKPT on amd64
2010/9/12, Robert Millan <email@example.com>:
> I believe that increasing NKPT on amd64 is harmless, as it will just
> increase the size of a statically-allocated page index. On i386,
> however, it seems VERY PROBLEMATIC because of the limited VM space,
> I would recommend discarding the netboot-gtk option on kfreebsd-i386.
This mail from freebsd-current provides more info on the subject: