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Compact dict resizing is doing too much work #72386

@rhettinger

Description

@rhettinger
BPO 28199
Nosy @rhettinger, @jaraco, @vstinner, @ned-deily, @methane, @serhiy-storchaka, @zhangyangyu
Dependencies
  • bpo-28580: Optimize iterating split table values
  • bpo-28583: PyDict_SetDefault doesn't combine split table when needed
  • Files
  • dictresize.patch
  • dictresize2.patch
  • dictresize3.patch
  • dictresize4.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 = 'https://github.com/methane'
    closed_at = <Date 2016-11-06.15:26:21.844>
    created_at = <Date 2016-09-18.22:13:49.406>
    labels = ['interpreter-core', '3.7', 'performance']
    title = 'Compact dict resizing is doing too much work'
    updated_at = <Date 2016-11-06.15:26:21.843>
    user = 'https://github.com/rhettinger'

    bugs.python.org fields:

    activity = <Date 2016-11-06.15:26:21.843>
    actor = 'serhiy.storchaka'
    assignee = 'methane'
    closed = True
    closed_date = <Date 2016-11-06.15:26:21.844>
    closer = 'serhiy.storchaka'
    components = ['Interpreter Core']
    creation = <Date 2016-09-18.22:13:49.406>
    creator = 'rhettinger'
    dependencies = ['28580', '28583']
    files = ['44888', '44893', '44983', '45252']
    hgrepos = []
    issue_num = 28199
    keywords = ['patch']
    message_count = 39.0
    messages = ['276921', '276927', '276931', '276934', '276938', '276944', '277737', '277751', '277755', '277756', '277758', '278223', '278225', '279446', '279593', '279595', '279597', '279598', '279599', '279605', '279615', '279625', '279655', '279656', '279663', '279664', '279806', '279810', '279814', '279815', '279816', '279817', '279818', '279882', '279890', '279906', '280042', '280139', '280140']
    nosy_count = 8.0
    nosy_names = ['rhettinger', 'jaraco', 'vstinner', 'ned.deily', 'methane', 'python-dev', 'serhiy.storchaka', 'xiang.zhang']
    pr_nums = []
    priority = None
    resolution = 'fixed'
    stage = 'resolved'
    status = 'closed'
    superseder = None
    type = 'performance'
    url = 'https://bugs.python.org/issue28199'
    versions = ['Python 3.7']

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    3.7 (EOL)end of lifeinterpreter-core(Objects, Python, Grammar, and Parser dirs)performancePerformance or resource usage
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