Dev:Doc/Tools/Debugging/Python Profile
Profiling Python Code
The 'profile' module
This example shows how to use the cProfile Python module to show script performance.
The function call shows:
# Initializes Python classes.
# (good place to run a profiler or trace).
utils.load_scripts()
This example shows how a the function call can be profiled.
import cProfile
cProfile.run("import bpy; bpy.utils.load_scripts()", "blender.prof")
import pstats
p = pstats.Stats("blender.prof")
p.sort_stats("cumulative").print_stats(20)
This prints the top 20 cumulative functions.
Heres an example of what the output may look like.
45572 function calls (43669 primitive calls) in 0.243 seconds
Ordered by: cumulative time
List reduced from 1507 to 20 due to restriction <20>
ncalls tottime percall cumtime percall filename:lineno(function)
120/1 0.002 0.000 0.243 0.243 {built-in method builtins.exec}
1 0.000 0.000 0.242 0.242 <string>:1(<module>)
1 0.000 0.000 0.242 0.242 /src/blender/release/scripts/modules/bpy/utils/__init__.py:134(load_scripts)
126/20 0.002 0.000 0.192 0.010 <frozen importlib._bootstrap>:966(_find_and_load)
126/20 0.001 0.000 0.190 0.010 <frozen importlib._bootstrap>:939(_find_and_load_unlocked)
125/20 0.001 0.000 0.186 0.009 <frozen importlib._bootstrap>:659(_load_unlocked)
97/18 0.001 0.000 0.185 0.010 {built-in method builtins.__import__}
117/20 0.001 0.000 0.185 0.009 <frozen importlib._bootstrap_external>:656(exec_module)
213/20 0.000 0.000 0.182 0.009 <frozen importlib._bootstrap>:214(_call_with_frames_removed)
1231/162 0.001 0.000 0.169 0.001 <frozen importlib._bootstrap>:996(_handle_fromlist)
1 0.000 0.000 0.143 0.143 /src/blender/release/scripts/modules/bpy/utils/__init__.py:108(modules_from_path)
4 0.000 0.000 0.143 0.036 /src/blender/release/scripts/modules/bpy/utils/__init__.py:75(_test_import)
1 0.000 0.000 0.099 0.099 /src/blender/release/scripts/startup/bl_ui/__init__.py:23(<module>)
1071 0.013 0.000 0.072 0.000 {built-in method builtins.__build_class__}
1 0.000 0.000 0.057 0.057 /src/blender/release/scripts/modules/addon_utils.py:40(_initialize)
11 0.000 0.000 0.056 0.005 /src/blender/release/scripts/modules/addon_utils.py:258(enable)
991 0.007 0.000 0.050 0.000 /src/blender/release/scripts/modules/bpy_types.py:537(__new__)
4 0.000 0.000 0.041 0.010 /src/blender/release/scripts/modules/bpy/utils/__init__.py:202(test_register)
4 0.000 0.000 0.041 0.010 /src/blender/release/scripts/modules/bpy/utils/__init__.py:166(register_module_call)
117 0.001 0.000 0.040 0.000 <frozen importlib._bootstrap_external>:726(get_code)
