What should i learns?

I am an optimization freak.
I've only used C and Assembly in my whole life (except the markup language HTML to make a silly webpage for myself.)
But now i have to design a website for someone i know, and i'll ask you anonymous, what should i learn?

Since i am an opt.freak i'd like my website to be ultra fast.
What should i use for a database? MySQL ? RoR ?
What is the fastest? PHP ? Perl or Ruby? something else? (coldfusion? lol)

in before haskell, lisp, forced indentation of the code, opera browser, too bad * is slow as fuck etc.

>>7
You seriously are considering using C for CGI? My god, man, you're really new at this:

a) CGI is slow. At least use FastCGI.
b) It's very easy to introduce security flaws with C (and yet you're also using OpenBSD? 2 + 2 = ???).
c) C is slow to develop in. It has none of the nicities useful for web dev. Nada. Zero.
d) The unfortunate person(s) who ends up maintaining this will hate you for eternity, especially if there's a spec change as is usually the case with web dev.
e) It's a fucking web server, man. With a database as well. What do you think will be the bottlenecks here?

You're either nuts, inexperienced, can't think, or all of the above. That is all.