What every programmer should know about memory

http://lwn.net/Articles/250967/ Software optimization resources http://www.agner.org/optimize/

2D math, fixed point, angles etc.

http://www.helixsoft.nl/articles/circle/sincos.htm

Integer division optimization

The idea is to replace division with multiplication and bit shift.

Found it interesting (GCC does it for you, but FPC not):
 
http://www.codeproject.com/KB/cs/FindMulShift.aspx

http://libdivide.com/