Profiling

• profile and visualize: https://code.google.com/p/jrfonseca/wiki/Gprof2Dot#python_profile

  I prefer xdot:

  wajig install xdot
  gprof2dot.py -f pstats output.pstats > out.dot
  xdot out.dot
  

• http://docs.python.org/2/library/profile.html