Profiling Python with valgrind

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1. Under Linux, install valgrind as follows (Fedora):

sudo yum install valgrind kcachegrind

and pyprof2calltree:

pip install pyprof2calltree

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2. Create a Python script (let us call it run.py)

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3. Create the file containing the profile information using valgrind/callgrind

python -m cProfile  -o profile_data.pyprof run.py
# this converts the stats into a callgrind format
pyprof2calltree -i profile_data.pyprof

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4. Visualisation

kcachegrind profile_data.pyprof.log

Alternatively, for visualisation, you can also use gprof2dot and graphviz (dot):

gprof2dot.py --format=callgrind --output=out.dot profile_data.pyprof.log
dot -Tsvg out.dot -o graph.svg