bpo-41364: Reduce import overhead of uuid module #21586

zooba · 2020-07-21T20:46:46Z

https://bugs.python.org/issue41364

miss-islington · 2020-07-21T23:15:50Z

Thanks @zooba for the PR 🌮🎉.. I'm working now to backport this PR to: 3.8, 3.9.
🐍🍒⛏🤖

(cherry picked from commit bf2f76e) Co-authored-by: Steve Dower <[email protected]>

bedevere-bot · 2020-07-21T23:16:25Z

GH-21589 is a backport of this pull request to the 3.9 branch.

miss-islington · 2020-07-21T23:16:26Z

Sorry, @zooba, I could not cleanly backport this to 3.8 due to a conflict.
Please backport using cherry_picker on command line.
cherry_picker bf2f76ec0976c09de79c8827764f30e3b6fba776 3.8

(cherry picked from commit bf2f76e) Co-authored-by: Steve Dower <[email protected]>

bedevere-bot · 2020-07-22T00:11:50Z

GH-21591 is a backport of this pull request to the 3.8 branch.

bedevere-bot · 2020-07-22T11:28:02Z

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 Windows7 SP1 3.8 has failed when building commit a18f22a.

What do you need to do:

Don't panic.
Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/163/builds/398) and take a look at the build logs.
Check if the failure is related to this commit (a18f22a) or if it is a false positive.
If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/163/builds/398

Summary of the results of the build (if available):

Click to see traceback logs

remote: Enumerating objects: 1        
remote: Enumerating objects: 9, done.        
remote: Counting objects:  11% (1/9)        
remote: Counting objects:  22% (2/9)        
remote: Counting objects:  33% (3/9)        
remote: Counting objects:  44% (4/9)        
remote: Counting objects:  55% (5/9)        
remote: Counting objects:  66% (6/9)        
remote: Counting objects:  77% (7/9)        
remote: Counting objects:  88% (8/9)        
remote: Counting objects: 100% (9/9)        
remote: Counting objects: 100% (9/9), done.        
remote: Compressing objects:  50% (1/2)        
remote: Compressing objects: 100% (2/2)        
remote: Compressing objects: 100% (2/2), done.        
remote: Total 9 (delta 6), reused 8 (delta 6), pack-reused 0        
From https://github.com/python/cpython
 * branch            3.8        -> FETCH_HEAD
Reset branch '3.8'

Could Not Find C:\buildbot.python.org\3.8.kloth-win64\build\Lib\*.pyc
The system cannot find the file specified.
Could Not Find C:\buildbot.python.org\3.8.kloth-win64\build\PCbuild\python*.zip

Could Not Find C:\buildbot.python.org\3.8.kloth-win64\build\Lib\*.pyc
The system cannot find the file specified.
Could Not Find C:\buildbot.python.org\3.8.kloth-win64\build\PCbuild\python*.zip

This follows in the footsteps of python#21586

This follows in the footsteps of python#21586 This speeds up import uuid by about 6ms on Linux. Before: ``` λ hyperfine -w 4 "./python -c 'import uuid'" Benchmark 1: ./python -c 'import uuid' Time (mean ± σ): 20.4 ms ± 0.4 ms [User: 16.7 ms, System: 3.8 ms] Range (min … max): 19.6 ms … 21.8 ms 136 runs ``` After: ``` λ hyperfine -w 4 "./python -c 'import uuid'" Benchmark 1: ./python -c 'import uuid' Time (mean ± σ): 14.5 ms ± 0.3 ms [User: 11.5 ms, System: 3.2 ms] Range (min … max): 13.9 ms … 16.0 ms 175 runs ```

This follows in the footsteps of #21586 This speeds up import uuid by about 6ms on Linux. Before: ``` λ hyperfine -w 4 "./python -c 'import uuid'" Benchmark 1: ./python -c 'import uuid' Time (mean ± σ): 20.4 ms ± 0.4 ms [User: 16.7 ms, System: 3.8 ms] Range (min … max): 19.6 ms … 21.8 ms 136 runs ``` After: ``` λ hyperfine -w 4 "./python -c 'import uuid'" Benchmark 1: ./python -c 'import uuid' Time (mean ± σ): 14.5 ms ± 0.3 ms [User: 11.5 ms, System: 3.2 ms] Range (min … max): 13.9 ms … 16.0 ms 175 runs ```

…on#115160) This follows in the footsteps of python#21586 This speeds up import uuid by about 6ms on Linux. Before: ``` λ hyperfine -w 4 "./python -c 'import uuid'" Benchmark 1: ./python -c 'import uuid' Time (mean ± σ): 20.4 ms ± 0.4 ms [User: 16.7 ms, System: 3.8 ms] Range (min … max): 19.6 ms … 21.8 ms 136 runs ``` After: ``` λ hyperfine -w 4 "./python -c 'import uuid'" Benchmark 1: ./python -c 'import uuid' Time (mean ± σ): 14.5 ms ± 0.3 ms [User: 11.5 ms, System: 3.2 ms] Range (min … max): 13.9 ms … 16.0 ms 175 runs ```

bpo-41364: Reduce import overhead of uuid module

d58d6f0

the-knights-who-say-ni added the CLA signed label Jul 21, 2020

bedevere-bot added the awaiting core review label Jul 21, 2020

zooba added needs backport to 3.8 needs backport to 3.9 only security fixes performance Performance or resource usage and removed CLA signed awaiting core review labels Jul 21, 2020

the-knights-who-say-ni added the CLA signed label Jul 21, 2020

Lazily import platform

59bc5d5

zooba merged commit bf2f76e into python:master Jul 21, 2020

miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Jul 21, 2020

bpo-41364: Reduce import overhead of uuid module (pythonGH-21586)

2105af8

(cherry picked from commit bf2f76e) Co-authored-by: Steve Dower <[email protected]>

bedevere-bot removed the needs backport to 3.9 only security fixes label Jul 21, 2020

miss-islington assigned zooba Jul 21, 2020

zooba deleted the bpo-41364 branch July 22, 2020 00:09

miss-islington added a commit that referenced this pull request Jul 22, 2020

bpo-41364: Reduce import overhead of uuid module (GH-21586)

00466db

(cherry picked from commit bf2f76e) Co-authored-by: Steve Dower <[email protected]>

zooba added a commit to zooba/cpython that referenced this pull request Jul 22, 2020

bpo-41364: Reduce import overhead of uuid module (pythonGH-21586)

6e1d1c4

bedevere-bot removed the needs backport to 3.8 label Jul 22, 2020

zooba added a commit that referenced this pull request Jul 22, 2020

bpo-41364: Reduce import overhead of uuid module (GH-21586)

a18f22a

shihai1991 pushed a commit to shihai1991/cpython that referenced this pull request Aug 4, 2020

bpo-41364: Reduce import overhead of uuid module (pythonGH-21586)

808203d

shihai1991 pushed a commit to shihai1991/cpython that referenced this pull request Aug 20, 2020

bpo-41364: Reduce import overhead of uuid module (pythonGH-21586)

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xzy3 pushed a commit to xzy3/cpython that referenced this pull request Oct 18, 2020

bpo-41364: Reduce import overhead of uuid module (pythonGH-21586)

820835c

hauntsaninja added a commit to hauntsaninja/cpython that referenced this pull request Feb 8, 2024

Reduce import overhead of uuid module

3ecc291

This follows in the footsteps of python#21586

hauntsaninja mentioned this pull request Feb 8, 2024

gh-109653: Reduce import overhead of uuid module on Linux #115160

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bpo-41364: Reduce import overhead of uuid module #21586

bpo-41364: Reduce import overhead of uuid module #21586

zooba commented Jul 21, 2020 •

edited by bedevere-bot

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miss-islington commented Jul 21, 2020

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miss-islington commented Jul 21, 2020

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bedevere-bot commented Jul 22, 2020

bpo-41364: Reduce import overhead of uuid module #21586

bpo-41364: Reduce import overhead of uuid module #21586

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zooba commented Jul 21, 2020 • edited by bedevere-bot Loading

miss-islington commented Jul 21, 2020

bedevere-bot commented Jul 21, 2020

miss-islington commented Jul 21, 2020

bedevere-bot commented Jul 22, 2020

bedevere-bot commented Jul 22, 2020

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

zooba commented Jul 21, 2020 •

edited by bedevere-bot

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