bpo-42927: Update the What's new entry for LOAD_ATTR optimizations #24383
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gvanrossum
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Jan 30, 2021
Doc/whatsnew/3.10.rst
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Honestly the 30% is a pretty wild guess -- your 36% clearly is not. I'm not even sure how to really measure this, given that when I build Python from source it's somewhat slower than the python.org binary. I assume this is because of PGO or other compiler flags. (Not --with-pydebug, that is much slower still.)
Up to you if you still want to put it this way.
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I did some more rigurous measurements for slots and I have updated the text.
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adorilson
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https://bugs.python.org/issue42927