gh-108303: Move `Lib/test/sortperf.py` to `Tools/scripts` #114687

sobolevn · 2024-01-28T20:18:58Z

@corona10 what do you think about moving these case to pyperformance? Would it be benefitial?

Issue: Move test files into test subdirectories #108303

vstinner · 2024-01-29T15:25:49Z

Which change (who) created this script? Is it @corona10?

sobolevn · 2024-01-29T15:35:27Z

It was Guido 27 years ago: https://github.com/python/cpython/commits/main/Lib/test/sortperf.py

I think he agreed on moving it away in Discord's #python-dev channel.

corona10

IMO, the First thing we have to do is add the benchmark script, not remove the file.

bedevere-app · 2024-01-29T17:20:09Z

A Python core developer has requested some changes be made to your pull request before we can consider merging it. If you could please address their requests along with any other requests in other reviews from core developers that would be appreciated.

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sobolevn · 2024-01-29T19:04:32Z

@corona10 ok, I will send a PR to pyperformance soon! 👍

This reverts commit 6903baa.

corona10

Even if we just move the script into Tools/script
IMO pyperf based script is more modernized way and easy to compare with improvement patch. WDYT?

sobolevn · 2024-02-09T14:37:32Z

I agree with Guido: it is not really that useful as a benchmark (since it is a micro-benchmark). It is only interesting when working on list.sort directly. And I don't think that this is going to happen anytime soon, since the sorting algorithm is quite old, fast, and stable.

So, I think that we can move this file for now. If someone has a real use-case for list.sort benchmark in pyperf, they can recreate my existing closed PR.

And for now this file would serve more like a history reference.

corona10 · 2024-02-10T06:04:03Z

So, I think that we can move this file for now. If someone has a real use-case for list.sort benchmark in pyperf, they can recreate my existing closed PR.

Ah, I meant rewriting the benchmark script based on pyperf(you already did) and storing it Tools/script/, I did not mean to move new script to pyperformance, I also agree with Guido, it will not be a proper place.

sobolevn · 2024-02-10T09:28:59Z

@corona10 sure!

corona10 · 2024-02-11T12:28:05Z

I will take a look at the PR by tomorrow :)

corona10

By default, all benchmark should be executed.
Benchmarks needs some tune up

.....................
list_sort: Mean +- std dev: 30.8 ms +- 0.4 ms
.....................
list_sort_ascending: Mean +- std dev: 1.76 ms +- 0.10 ms

Execution time is too long :(
(Maybe we need to control inner_loops value)

Tools/scripts/sortperf.py

sobolevn · 2024-02-15T09:05:41Z

@corona10 I've merged your suggestions. Thank you!

I've also optimized the benchmark:

» time python Tools/scripts/sortperf.py  
.....................
list_sort: Mean +- std dev: 29.0 us +- 0.2 us
.....................
list_sort_ascending: Mean +- std dev: 28.9 us +- 0.4 us
.....................
list_sort_ascending_exchanged: Mean +- std dev: 29.2 us +- 0.4 us
.....................
list_sort_ascending_one_percent: Mean +- std dev: 29.5 us +- 0.2 us
.....................
list_sort_ascending_random: Mean +- std dev: 29.6 us +- 0.3 us
.....................
list_sort_descending: Mean +- std dev: 29.5 us +- 0.2 us
.....................
list_sort_duplicates: Mean +- std dev: 30.4 us +- 1.1 us
.....................
list_sort_equal: Mean +- std dev: 29.2 us +- 0.2 us
.....................
list_sort_worst_case: Mean +- std dev: 29.2 us +- 0.2 us
python Tools/scripts/sortperf.py  98.38s user 3.21s system 99% cpu 1:41.75 total

Is it good enough?

corona10

LGTM

@sobolevn Feel free to merge the PR anytime!

sobolevn · 2024-02-18T07:25:11Z

@corona10 Thank you! 🎉

I think that we also need to backport this to 3.11 and 3.12
Do you agree?

corona10 · 2024-02-18T07:25:49Z

Yeah go a head

miss-islington-app · 2024-02-18T07:27:18Z

Thanks @sobolevn for the PR 🌮🎉.. I'm working now to backport this PR to: 3.11, 3.12.
🐍🍒⛏🤖 I'm not a witch! I'm not a witch!

…onGH-114687) (cherry picked from commit f9154f8) Co-authored-by: Nikita Sobolev <[email protected]>

bedevere-app · 2024-02-18T07:27:27Z

GH-115625 is a backport of this pull request to the 3.12 branch.

…onGH-114687) (cherry picked from commit f9154f8) Co-authored-by: Nikita Sobolev <[email protected]>

bedevere-app · 2024-02-18T07:27:32Z

GH-115626 is a backport of this pull request to the 3.11 branch.

…114687) (#115626) gh-108303: Move `Lib/test/sortperf.py` to `Tools/scripts` (GH-114687) (cherry picked from commit f9154f8) Co-authored-by: Nikita Sobolev <[email protected]>

…114687) (#115625) gh-108303: Move `Lib/test/sortperf.py` to `Tools/scripts` (GH-114687) (cherry picked from commit f9154f8) Co-authored-by: Nikita Sobolev <[email protected]>

…on#114687)

pythongh-108303: Remove Lib/test/sortperf.py

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Move test files into test subdirectories #108303

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Add list.sort benchmarks python/pyperformance#328

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sobolevn added 2 commits February 9, 2024 14:56

Revert "pythongh-108303: Remove Lib/test/sortperf.py"

145f089

This reverts commit 6903baa.

Move Lib/test/sortperf.py to Tools/scripts

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sobolevn changed the title ~~gh-108303: Remove Lib/test/sortperf.py~~ gh-108303: Move Lib/test/sortperf.py to Tools/scripts Feb 9, 2024

sobolevn requested a review from corona10 February 9, 2024 11:57

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sobolevn added 3 commits February 10, 2024 15:17

Use pyperf script

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Fix CI

052ec30

Merge branch 'main' into issue-108303-sortperf

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Merge branch 'main' into issue-108303-sortperf

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sobolevn added needs backport to 3.11 only security fixes needs backport to 3.12 only security fixes labels Feb 18, 2024

sobolevn merged commit f9154f8 into python:main Feb 18, 2024

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miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Feb 18, 2024

pythongh-108303: Move Lib/test/sortperf.py to Tools/scripts (pyth…

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…onGH-114687) (cherry picked from commit f9154f8) Co-authored-by: Nikita Sobolev <[email protected]>

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miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Feb 18, 2024

pythongh-108303: Move Lib/test/sortperf.py to Tools/scripts (pyth…

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…onGH-114687) (cherry picked from commit f9154f8) Co-authored-by: Nikita Sobolev <[email protected]>

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pythongh-108303: Move Lib/test/sortperf.py to Tools/scripts (pyth…

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pochmann3 mentioned this pull request Mar 10, 2024

sortperf.py is broken #116576

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sobolevn mentioned this pull request Mar 10, 2024

gh-116576: Fix Tools/scripts/sortperf.py sorting the same list #116577

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gh-108303: Move `Lib/test/sortperf.py` to `Tools/scripts` #114687

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gh-108303: Move Lib/test/sortperf.py to Tools/scripts #114687

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gh-108303: Move `Lib/test/sortperf.py` to `Tools/scripts` #114687

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