As their default (and quite interesting) offering is SmartOS, I'd like to ask if someone has some recent experience with (Open)Solaris networking. I still remember the day when it (especially its x86 incarnation) was renowned for having syscalls that were slow as molasses – IIRC, actually a big boon for the then-fledgling Linux.

How does it fare at memory allocation, especially under load? How good is their select successor (i.e. their equivalent to epoll/kqueue)?