https://github.com/python/cpython/commit/6fa6a6180571d0928c3d867edd3ea0eb2ee0357c commit: 6fa6a6180571d0928c3d867edd3ea0eb2ee0357c branch: 3.11 author: Miss Islington (bot) <[email protected]> committer: ronaldoussoren <[email protected]> date: 2024-01-14T16:29:30+01:00 summary:
[3.11] gh-101225: Increase the socket backlog when creating a multiprocessing.connection.Listener (GH-113567) (#114019) gh-101225: Increase the socket backlog when creating a multiprocessing.connection.Listener (GH-113567) Increase the backlog for multiprocessing.connection.Listener` objects created by `multiprocessing.manager` and `multiprocessing.resource_sharer` to significantly reduce the risk of getting a connection refused error when creating a `multiprocessing.connection.Connection` to them. (cherry picked from commit c7d59bd8cfa053e77ae3446c82afff1fd38a4886) Co-authored-by: Ronald Oussoren <[email protected]> Co-authored-by: Adam Turner <[email protected]> files: A Misc/NEWS.d/next/Library/2023-12-29-17-46-06.gh-issue-101225.QaEyxF.rst M Lib/multiprocessing/managers.py M Lib/multiprocessing/resource_sharer.py diff --git a/Lib/multiprocessing/managers.py b/Lib/multiprocessing/managers.py index 3f6479b7e3a693..245b15f227ae58 100644 --- a/Lib/multiprocessing/managers.py +++ b/Lib/multiprocessing/managers.py @@ -153,7 +153,7 @@ def __init__(self, registry, address, authkey, serializer): Listener, Client = listener_client[serializer] # do authentication later - self.listener = Listener(address=address, backlog=16) + self.listener = Listener(address=address, backlog=128) self.address = self.listener.address self.id_to_obj = {'0': (None, ())} diff --git a/Lib/multiprocessing/resource_sharer.py b/Lib/multiprocessing/resource_sharer.py index 66076509a1202e..b8afb0fbed3a3c 100644 --- a/Lib/multiprocessing/resource_sharer.py +++ b/Lib/multiprocessing/resource_sharer.py @@ -123,7 +123,7 @@ def _start(self): from .connection import Listener assert self._listener is None, "Already have Listener" util.debug('starting listener and thread for sending handles') - self._listener = Listener(authkey=process.current_process().authkey) + self._listener = Listener(authkey=process.current_process().authkey, backlog=128) self._address = self._listener.address t = threading.Thread(target=self._serve) t.daemon = True diff --git a/Misc/NEWS.d/next/Library/2023-12-29-17-46-06.gh-issue-101225.QaEyxF.rst b/Misc/NEWS.d/next/Library/2023-12-29-17-46-06.gh-issue-101225.QaEyxF.rst new file mode 100644 index 00000000000000..ab3c3a5ef23f45 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2023-12-29-17-46-06.gh-issue-101225.QaEyxF.rst @@ -0,0 +1,4 @@ +Increase the backlog for :class:`multiprocessing.connection.Listener` objects created +by :mod:`multiprocessing.manager` and :mod:`multiprocessing.resource_sharer` to +significantly reduce the risk of getting a connection refused error when creating +a :class:`multiprocessing.connection.Connection` to them. _______________________________________________ Python-checkins mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3/lists/python-checkins.python.org/ Member address: [email protected]
