OProfile + Gprof2Dot commands in order to get wonderful profiling graphs

opcontrol --reset

opcontrol --start
[run your application]

opcontrol --shutdown

opreport -cg ./my_test /usr/lib/my_libraries | python gprof2dot.py -f oprofile | dot -Tpng -o output.png

http://oprofile.sourceforge.net/news/

http://code.google.com/p/jrfonseca/wiki/Gprof2Dot

http://gprof2dot.jrfonseca.googlecode.com/hg/gprof2dot.py