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Author rhettinger
Recipients rhettinger
Date 2021-05-04.18:19:14
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <>
Running Tools/scripts/ on the production macOS builds on shows a performance drop-off between alpha-7 and beta-1.

Apple Silicon
read local            4.1ns ->  4.5ns
read non_local        4.1ns ->  4.6ns
read global           4.2ns ->  4.9ns
read builtin          4.2ns ->  5.3ns
classvar from cls    10.1ns -> 12.6ns
classvar from inst    9.5      11.7
read instvar          9.2      11.3
instvar with slots    5.8       8.2
namedtuple           11.1      14.2

Since the effects are seen in almost every category, I suspect a build problem, a change to the eval loop, or a failure to inline some of the shared functions that used to be macros.
Date User Action Args
2021-05-04 18:19:14rhettingersetrecipients: + rhettinger
2021-05-04 18:19:14rhettingersetmessageid: <>
2021-05-04 18:19:14rhettingerlinkissue44037 messages
2021-05-04 18:19:14rhettingercreate