Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!
You can use valgrind with the following options
valgrind --tool=callgrind ./(Your binary)It will generate a file called callgrind.out.x. You can then use kcachegrind tool to read this file. It will give you a graphical analysis of things with results like which lines cost how much.