python / python/cpython

use os.memfd_create in multiprocessing.shared_memory?

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3.13 performance topic-multiprocessing type-feature
Dominant language
Python
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Description

BPO 37185
Nosy @pitrou, @tiran, @applio, @pierreglaser, @vinay0410

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 2019-06-06.22:20:10.478>
labels = ['3.9', 'performance']
title = 'use  os.memfd_create in multiprocessing.shared_memory?'
updated_at = <Date 2019-09-09.15:26:07.601>
user = 'https://github.com/pierreglaser'

bugs.python.org fields:

activity = <Date 2019-09-09.15:26:07.601>
actor = 'christian.heimes'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = []
creation = <Date 2019-06-06.22:20:10.478>
creator = 'pierreglaser'
dependencies = []
files = []
hgrepos = []
issue_num = 37185
keywords = []
message_count = 4.0
messages = ['344881', '348974', '351443', '351500']
nosy_count = 5.0
nosy_names = ['pitrou', 'christian.heimes', 'davin', 'pierreglaser', 'vinay0410']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'resource usage'
url = 'https://bugs.python.org/issue37185'
versions = ['Python 3.9']

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading the multiprocessing.shared_memory implementation and the os.memfd_create documentation, then trace how shared-memory objects are currently created on supported platforms. Compare the platform and resource-management implications; done means the proposed use is implemented with appropriate coverage, or the issue clearly records why it is not suitable.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
operating-systems
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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