How to profile / benchmark / time a chunk of code

[DominiqueMakowski]

Total time of a function

%timeit myfunction(something)

Benchmark the calls

The function call is entered as a string.

import cProfile

cProfile.run("myfunction(something)", sort=1)

Benchmark the calls within a function with snakeviz

I put it here because I always forget how to do it and spend some time re-re-regoogling it:

1. pip install snakeviz (https://jiffyclub.github.io/snakeviz/)

2. Run this:

import snakeviz

# So-called "line magic"
%load_ext snakeviz 

# The '-t' opens the stuff in a new tab
signal = nk.signal_simulate(duration=2, frequency=5)
%snakeviz -t nk.signal_psd(signal)

(note that in interactive jupyer in vs-code you need to manually select the last line, just putting the cursor on it and hitting shift+enter doens't work)