pytorch

fc3c7fb7 - Make "server socket not listening" warning logs less noisy (#73149)

Make "server socket not listening" warning logs less noisy (#73149) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/73149 This PR improves the handling of the "server socket not yet listening" warning log in c10d `socket`. Instead of outputting it after every failed attempt (meaning every second), it is now written every 20 seconds. Note though that if the log level is set to `INFO`, we keep writing a detailed message every second as before with additional `errno` information. With log level set to `WARN` the output looks like: ``` [W socket.cpp:598] [c10d] No socket on (127.0.0.1, 29501) is listening yet, will retry. [W socket.cpp:598] [c10d] No socket on (127.0.0.1, 29501) is listening yet, will retry. ... [E socket.cpp:726] [c10d] The client socket has timed out after 300s while trying to connect to (127.0.0.1, 29501). ``` With log level set to `INFO` (a.k.a. verbose or debug level) the output looks like: ``` [I socket.cpp:515] [c10d] The client socket will attempt to connect to an IPv6 address of (127.0.0.1, 29501). [I socket.cpp:582] [c10d] The client socket is attempting to connect to [localhost]:29501. [I socket.cpp:643] [c10d] The server socket on [localhost]:29501 is not yet listening (errno: 111 - Connection refused), will retry. [W socket.cpp:598] [c10d] No socket on (127.0.0.1, 29501) is listening yet, will retry. [I socket.cpp:582] [c10d] The client socket is attempting to connect to [localhost]:29501. [I socket.cpp:643] [c10d] The server socket on [localhost]:29501 is not yet listening (errno: 111 - Connection refused), will retry. [I socket.cpp:582] [c10d] The client socket is attempting to connect to [localhost]:29501. [I socket.cpp:643] [c10d] The server socket on [localhost]:29501 is not yet listening (errno: 111 - Connection refused), will retry. [I socket.cpp:582] [c10d] The client socket is attempting to connect to [localhost]:29501. [I socket.cpp:643] [c10d] The server socket on [localhost]:29501 is not yet listening (errno: 111 - Connection refused), will retry. ... [W socket.cpp:598] [c10d] No socket on (127.0.0.1, 29501) is listening yet, will retry. ... [E socket.cpp:726] [c10d] The client socket has timed out after 300s while trying to connect to (127.0.0.1, 29501). ``` ghstack-source-id: 149778565 Test Plan: Run manual tests to verify the correctness of the log message. Reviewed By: rohan-varma Differential Revision: D34365217 fbshipit-source-id: 296d01fa8b1ba803432903c10686d8a75145e539 (cherry picked from commit 8ae5aff0c5ffcc3e87d27d2deba6fedf8cef45cd)