sum() several times slower on Python 3 64-bit

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#68,264 创建于 2015年4月29日 48 条评论 0 个 reaction 已指派 0 人在 GitHub 查看

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难度: 4/5
预计耗时: 3-5 天
新手友好度: 15/100

Issue 类型: 缺陷
描述清晰度: 需要澄清
活跃度: 停滞
技术栈: python
领域: backend, performance

调研方向

Start by reviewing the referenced pylong_freelist.patch and unpack_single_digits.patch, then inspect pull requests #28469 and #28493. Compare the reported Python 3 64-bit sum() performance with the changes under discussion; done means the slowdown is addressed and the relevant performance behavior is verified.

由索引模型根据 Issue 内容生成。

描述

interpreter-core performance type-feature

BPO	24076
Nosy	@gvanrossum, @rhettinger, @mdickinson, @scoder, @stevendaprano, @ambv, @serhiy-storchaka, @pablogsal
PRs	python/cpython#28469 python/cpython#28493
Files	pylong_freelist.patch unpack_single_digits.patch

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2021-09-21.11:22:53.873>
created_at = <Date 2015-04-29.18:36:58.330>
labels = ['interpreter-core', '3.11', 'performance']
title = 'sum() several times slower on Python 3 64-bit'
updated_at = <Date 2021-09-22.10:30:16.952>
user = 'https://github.com/ambv'

bugs.python.org fields:

activity = <Date 2021-09-22.10:30:16.952>
actor = 'pablogsal'
assignee = 'none'
closed = True
closed_date = <Date 2021-09-21.11:22:53.873>
closer = 'scoder'
components = ['Interpreter Core']
creation = <Date 2015-04-29.18:36:58.330>
creator = 'lukasz.langa'
dependencies = []
files = ['39245', '47748']
hgrepos = []
issue_num = 24076
keywords = ['patch']
message_count = 35.0
messages = ['242238', '242241', '242242', '242243', '242244', '242259', '242260', '242262', '242294', '242300', '242302', '242310', '242357', '242914', '323443', '402136', '402201', '402210', '402281', '402282', '402285', '402286', '402295', '402298', '402302', '402306', '402310', '402313', '402315', '402325', '402326', '402328', '402334', '402410', '402421']
nosy_count = 8.0
nosy_names = ['gvanrossum', 'rhettinger', 'mark.dickinson', 'scoder', 'steven.daprano', 'lukasz.langa', 'serhiy.storchaka', 'pablogsal']
pr_nums = ['28469', '28493']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'performance'
url = 'https://bugs.python.org/issue24076'
versions = ['Python 3.11']

主要语言: Python
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