Created on 2018-08-01 05:09 by sir-sigurd, last changed 2019-06-01 20:32 by rhettinger. This issue is now closed.
| Pull Requests | |||
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| URL | Status | Linked | Edit |
| PR 8598 | merged | sir-sigurd, 2018-08-01 05:10 | |
| Messages (2) | |||
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| msg322841 - (view) | Author: Sergey Fedoseev (sir-sigurd) * | Date: 2018-08-01 05:09 | |
`PyTuple_SetItem()` can be replaced with macro version and `PyObject_Call()` can be used instead of `PyEval_CallObject()`. Here's benchmark results: $ python -m perf timeit --compare-to ~/tmp/cpython-master-venv/bin/python -s "from functools import reduce; from operator import is_; r = range(50000)" "reduce(is_, r)" /home/sergey/tmp/cpython-master-venv/bin/python: ..................... 1.64 ms +- 0.01 ms /home/sergey/tmp/cpython-venv/bin/python: ..................... 1.40 ms +- 0.00 ms Mean +- std dev: [/home/sergey/tmp/cpython-master-venv/bin/python] 1.64 ms +- 0.01 ms -> [/home/sergey/tmp/cpython-venv/bin/python] 1.40 ms +- 0.00 ms: 1.17x faster (-15%) |
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| msg344222 - (view) | Author: Raymond Hettinger (rhettinger) *  |
Date: 2019-06-01 20:32 | |
New changeset e5f6207ba6cb510d9370519ba869296be01787be by Raymond Hettinger (Sergey Fedoseev) in branch 'master': bpo-34303: Micro-optimizations in functools.reduce() (GH-8598) https://github.com/python/cpython/commit/e5f6207ba6cb510d9370519ba869296be01787be |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2019-06-01 20:32:46 | rhettinger | set | status: open -> closed resolution: fixed stage: patch review -> resolved |
| 2019-06-01 20:32:21 | rhettinger | set | nosy:
+ rhettinger messages: + msg344222 |
| 2018-08-01 09:12:25 | inada.naoki | set | type: enhancement -> performance versions: + Python 3.8 |
| 2018-08-01 08:27:28 | xtreak | set | nosy:
+ xtreak |
| 2018-08-01 05:10:27 | sir-sigurd | set | keywords:
+ patch stage: patch review pull_requests: + pull_request8107 |
| 2018-08-01 05:09:03 | sir-sigurd | create | |