Used to visualize CPU threads activity during threaded object update. It prints whole bunch of timing information to STDERR which then could be parsed and nicely visualized. Detailed statistics is disabled by default. File to parse and visualize statistics: http://blender.nazg-gul.dyndns.org/depsgraph/threaded_update_stats.blend And screenshot for fun: http://blender.nazg-gul.dyndns.org/depsgraph/threaded_update_stats.blend.png