➜
This issue tracker has been migrated to GitHub,
and is currently read-only.
For more information,
see the GitHub FAQs in the Python's Developer Guide.
Created on 2021-09-15 13:29 by vstinner, last changed 2022-04-11 14:59 by admin. This issue is now closed.
| Pull Requests | |||
|---|---|---|---|
| URL | Status | Linked | Edit |
| PR 28377 | merged | sobolevn, 2021-09-15 20:33 | |
| PR 28499 | merged | miss-islington, 2021-09-21 17:56 | |
| PR 28500 | merged | miss-islington, 2021-09-21 17:57 | |
| Messages (7) | |||
|---|---|---|---|
| msg401837 - (view) | Author: STINNER Victor (vstinner) *  |
Date: 2021-09-15 13:29 | |
0:03:25 load avg: 12.33 [250/427] test_multiprocessing_forkserver passed (...)
/home/vstinner/python/main/Lib/multiprocessing/resource_tracker.py:224: UserWarning: resource_tracker: There appear to be 1 leaked shared_memory objects to clean up at shutdown
warnings.warn('resource_tracker: There appear to be %d '
/home/vstinner/python/main/Lib/multiprocessing/resource_tracker.py:237: UserWarning: resource_tracker: '/psm_33506d9a': [Errno 2] No such file or directory: '/psm_33506d9a'
warnings.warn('resource_tracker: %r: %s' % (name, e))
|
|||
| msg401866 - (view) | Author: Nikita Sobolev (sobolevn) *  |
Date: 2021-09-15 17:47 | |
I would like to work on this, if no one has started yet. |
|||
| msg401902 - (view) | Author: Nikita Sobolev (sobolevn) * |
Date: 2021-09-15 20:31 | |
The problem was in `test_shared_memory_cleaned_after_process_termination` test.
```
» ./python.exe -m test -v test_multiprocessing_forkserver -m test_shared_memory_cleaned_after_process_termination
== CPython 3.11.0a0 (heads/main:09b4ad11f3, Sep 15 2021, 20:50:50) [Clang 11.0.0 (clang-1100.0.33.16)]
== macOS-10.14.6-x86_64-i386-64bit little-endian
== cwd: /Users/sobolev/Desktop/cpython/build/test_python_14874æ
== CPU count: 4
== encodings: locale=UTF-8, FS=utf-8
0:00:00 load avg: 1.98 Run tests sequentially
0:00:00 load avg: 1.98 [1/1] test_multiprocessing_forkserver
test_shared_memory_cleaned_after_process_termination (test.test_multiprocessing_forkserver.WithProcessesTestSharedMemory) ... ok
/Users/sobolev/Desktop/cpython/Lib/multiprocessing/resource_tracker.py:224: UserWarning: resource_tracker: There appear to be 1 leaked shared_memory objects to clean up at shutdown
warnings.warn('resource_tracker: There appear to be %d '
/Users/sobolev/Desktop/cpython/Lib/multiprocessing/resource_tracker.py:237: UserWarning: resource_tracker: '/psm_67480e45': [Errno 2] No such file or directory: '/psm_67480e45'
warnings.warn('resource_tracker: %r: %s' % (name, e))
----------------------------------------------------------------------
Ran 1 test in 0.775s
OK
== Tests result: SUCCESS ==
1 test OK.
Total duration: 1.6 sec
Tests result: SUCCESS
```
My patch (location https://github.com/python/cpython/blob/51056b40e711d84692d099ac8970077b33c7fafd/Lib/test/_test_multiprocessing.py#L4179):
```
resource_tracker.unregister(f"/{name}", "shared_memory")
```
With this change no warning is generated:
```
» ./python.exe -m test -v test_multiprocessing_forkserver -m test_shared_memory_cleaned_after_process_termination
== CPython 3.11.0a0 (heads/main:09b4ad11f3, Sep 15 2021, 20:50:50) [Clang 11.0.0 (clang-1100.0.33.16)]
== macOS-10.14.6-x86_64-i386-64bit little-endian
== cwd: /Users/sobolev/Desktop/cpython/build/test_python_24281æ
== CPU count: 4
== encodings: locale=UTF-8, FS=utf-8
0:00:00 load avg: 1.80 Run tests sequentially
0:00:00 load avg: 1.80 [1/1] test_multiprocessing_forkserver
test_shared_memory_cleaned_after_process_termination (test.test_multiprocessing_forkserver.WithProcessesTestSharedMemory) ... ok
----------------------------------------------------------------------
Ran 1 test in 0.732s
OK
== Tests result: SUCCESS ==
1 test OK.
Total duration: 1.5 sec
Tests result: SUCCESS
```
My other highly-related PR where I refactor several `SharedMemory` tests: https://github.com/python/cpython/pull/28294
|
|||
| msg402336 - (view) | Author: Łukasz Langa (lukasz.langa) * |
Date: 2021-09-21 17:49 | |
New changeset f604cf1c377a7648e0686044e6e49900bfc9feef by Nikita Sobolev in branch 'main': bpo-45209: fix `UserWarning: resource_tracker` in test_multiprocessing (GH-28377) https://github.com/python/cpython/commit/f604cf1c377a7648e0686044e6e49900bfc9feef |
|||
| msg402341 - (view) | Author: miss-islington (miss-islington) | Date: 2021-09-21 18:19 | |
New changeset 09e5016f8bb07beb7d780df221febac2d2867ad0 by Miss Islington (bot) in branch '3.10': bpo-45209: fix `UserWarning: resource_tracker` in test_multiprocessing (GH-28377) https://github.com/python/cpython/commit/09e5016f8bb07beb7d780df221febac2d2867ad0 |
|||
| msg402342 - (view) | Author: STINNER Victor (vstinner) * |
Date: 2021-09-21 18:37 | |
New changeset 65268ab849173e9849b7fc94c3d73900b5410444 by Miss Islington (bot) in branch '3.9': bpo-45209: fix `UserWarning: resource_tracker` in test_multiprocessing (GH-28377) (GH-28500) https://github.com/python/cpython/commit/65268ab849173e9849b7fc94c3d73900b5410444 |
|||
| msg402343 - (view) | Author: STINNER Victor (vstinner) * |
Date: 2021-09-21 18:37 | |
Thanks Nikita Sobolev for the fix. |
|||
| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:50 | admin | set | github: 89372 |
| 2021-09-21 18:37:39 | vstinner | set | status: open -> closed versions: + Python 3.9, Python 3.10 messages: + msg402343 resolution: fixed stage: patch review -> resolved |
| 2021-09-21 18:37:11 | vstinner | set | messages: + msg402342 |
| 2021-09-21 18:19:56 | miss-islington | set | messages: + msg402341 |
| 2021-09-21 17:57:48 | miss-islington | set | pull_requests: + pull_request26895 |
| 2021-09-21 17:56:02 | miss-islington | set | nosy:
+ miss-islington pull_requests: + pull_request26894 |
| 2021-09-21 17:49:49 | lukasz.langa | set | nosy:
+ lukasz.langa messages: + msg402336 |
| 2021-09-15 20:33:50 | sobolevn | set | keywords:
+ patch stage: patch review pull_requests: + pull_request26792 |
| 2021-09-15 20:31:55 | sobolevn | set | messages: + msg401902 |
| 2021-09-15 17:47:02 | sobolevn | set | nosy:
+ sobolevn messages: + msg401866 |
| 2021-09-15 13:29:13 | vstinner | create | |