Performance profiling on Linux

Question

What are the best tools for profiling C/C++ applications on *nix?

(I\'m hoping to profile a server that is a mix of (blocking) file IO, epoll for network and fork()/

Answer 1

I recommend taking stackshots, for which pstack is useful. Here's some more information:

1. Comments on gprof.

2. How stackshots work.

3. A blow-by-blow example.

4. A very short explanation.

If you want to spend money, Zoom looks like a pretty good tool.