Does effective Cython cProfiling imply writing many sub functions?

Question

I am trying to optimize some code with Cython, but cProfile is not providing enough information.

To do a good job at profiling, should I create many su

Answer 1

Yes, it does. The finest granularity available to cProfile is a function call. You must split up func1 into multiple functions. (Note that you can make them functions defined inside func1 and thus only available to func1.)

If you want finer-grained profiling (line-level), then you need a different profiler. Take a look at this line-level profiler, but I don't think it works for Cython.

Answer 2

You need to enable profiling support for your Cython code. Use

# cython: profile=True

http://docs.cython.org/src/tutorial/profiling_tutorial.html