[Python-Dev] PyDict_SetItem hook

John Ehresman jpe at wingware.com
Thu Apr 2 04:16:51 CEST 2009

Collin Winter wrote:
> Have you measured the impact on performance?

I've tried to test using pystone, but am seeing more differences between 
runs than there is between python w/ the patch and w/o when there is no 
hook installed.  The highest pystone is actually from the binary w/ the 
patch, which I don't really believe unless it's some low level code 
generation affect.  The cost is one test of a global variable and then a 
switch to the branch that doesn't call the hooks.

I'd be happy to try to come up with better numbers next week after I get 
home from pycon.


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