Certain methods that heap allocated subtypes inherit suffer a 50-80% performance penalty

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#78,577 创建于 2018年8月13日 8 条评论 0 个 reaction 已指派 0 人在 GitHub 查看

还没有人认领这个 Issue。

评估

难度: 5/5
预计耗时: 一周以上
新手友好度: 25/100

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

调研方向

从 BPO issue 34396 和其中引用的 PR #14863 开始；payload 没有列出源文件或测试。确定受影响的 heap 分配子类型上的继承方法，并使用 benchmarks 验证报告的性能损失；当回归问题得到解决且性能差异得到验证时，即视为完成。

由索引模型根据 Issue 内容生成。

描述

3.12 performance topic-C-API

BPO	34396
Nosy	@rhettinger, @scoder, @benjaminp, @methane, @serhiy-storchaka, @jdemeyer, @mr-nfamous, @Marco-Sulla
PRs	python/cpython#14863

^{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 = None
created_at = <Date 2018-08-13.19:36:41.892>
labels = ['expert-C-API', '3.9', 'performance']
title = 'Certain methods that heap allocated subtypes inherit suffer a 50-80% performance penalty'
updated_at = <Date 2020-02-28.08:02:38.315>
user = 'https://github.com/mr-nfamous'

bugs.python.org fields:

activity = <Date 2020-02-28.08:02:38.315>
actor = 'methane'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['C API']
creation = <Date 2018-08-13.19:36:41.892>
creator = 'bup'
dependencies = []
files = []
hgrepos = []
issue_num = 34396
keywords = ['patch']
message_count = 8.0
messages = ['323490', '323498', '328187', '339449', '339453', '339477', '348185', '362715']
nosy_count = 8.0
nosy_names = ['rhettinger', 'scoder', 'benjamin.peterson', 'methane', 'serhiy.storchaka', 'jdemeyer', 'bup', 'Marco Sulla']
pr_nums = ['14863']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'performance'
url = 'https://bugs.python.org/issue34396'
versions = ['Python 3.9']

主要语言: Python
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