gh-93910: Fix enum performance regression #94614
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This removes the performance regression in 3.11, at the expense of not fixing the "bug" that allows accessing values from values (e.g. `Color.RED.BLUE`).
tiran
reviewed
Jul 6, 2022
Co-authored-by: Christian Heimes <[email protected]>
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Could you please add blurb that mentions the performance regression and the fact that member of member access is permitted again? |
brettcannon
reviewed
Jul 6, 2022
Co-authored-by: Brett Cannon <[email protected]>
tiran
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Jul 6, 2022
tiran
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stdlib
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@ethanfurman Are you ok with the change for 3.11? |
pablogsal
approved these changes
Jul 7, 2022
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Thanks @mdboom for the PR 🌮🎉.. I'm working now to backport this PR to: 3.11. |
miss-islington
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to miss-islington/cpython
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Jul 7, 2022
This removes the performance regression in 3.11, **at the expense of not fixing the "bug" that allows accessing values from values** (e.g. `Color.RED.BLUE`). Using the benchmark @markshannon [presented](https://github.com/python/cpython/issues/93910GH-issuecomment-1165503032), the results are: | Version | Enum | Fast enum | Normal class | | --- | --- | --- | --- | | 3.10 | 2.04 | 0.59 | 0.56 | | 3.11 | 2.78 | 0.31 | 0.15 | | This PR | 1.30 | 0.32 | 0.16 | I share this mostly as information about the source of the regression, as this may be useful. It may be that the lower-risk approach for the beta is just to revert to a previously-known working state. (cherry picked from commit ed136b9) Co-authored-by: Michael Droettboom <[email protected]>
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GH-94655 is a backport of this pull request to the 3.11 branch. |
miss-islington
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Jul 7, 2022
This removes the performance regression in 3.11, **at the expense of not fixing the "bug" that allows accessing values from values** (e.g. `Color.RED.BLUE`). Using the benchmark @markshannon [presented](https://github.com/python/cpython/issues/93910GH-issuecomment-1165503032), the results are: | Version | Enum | Fast enum | Normal class | | --- | --- | --- | --- | | 3.10 | 2.04 | 0.59 | 0.56 | | 3.11 | 2.78 | 0.31 | 0.15 | | This PR | 1.30 | 0.32 | 0.16 | I share this mostly as information about the source of the regression, as this may be useful. It may be that the lower-risk approach for the beta is just to revert to a previously-known working state. (cherry picked from commit ed136b9) Co-authored-by: Michael Droettboom <[email protected]>
This was referenced Jul 8, 2022
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This removes the performance regression in 3.11, at the expense of not fixing
the "bug" that allows accessing values from values (e.g.
Color.RED.BLUE).Using the benchmark @markshannon presented, the results are:
I share this mostly as information about the source of the regression, as this may be useful. It may be that the lower-risk approach for the beta is just to revert to a previously-known working state.
Automerge-Triggered-By: GH:tiran