Issue #13565: Increase multiprocessing's server socket backlog, to avoid

dropped connections in case of simultaneous connection requests.

diff --git a/Lib/multiprocessing/managers.py b/Lib/multiprocessing/managers.py
index 78518fd522c7518ade3c23226b6e87d7a4a5d3d9..ffe5812b89db1d64507f6516ec0522afd9b2edf5 100644 (file)
--- a/Lib/multiprocessing/managers.py
+++ b/Lib/multiprocessing/managers.py
@@ -159,7 +159,7 @@ class Server(object):
         Listener, Client = listener_client[serializer]
 
         # do authentication later
-        self.listener = Listener(address=address, backlog=5)
+        self.listener = Listener(address=address, backlog=16)
         self.address = self.listener.address
 
         self.id_to_obj = {'0': (None, ())}