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nickstenning / honcho

Honcho: a python clone of Foreman. For managing Procfile-based applications.
http://pypi.python.org/pypi/honcho
MIT License
1.6k stars 146 forks source link

BlockingIOError: [Errno 35] write could not complete without blocking #168

Closed jacebrowning closed 3 years ago

jacebrowning commented 8 years ago

When running with a few processes on OS X 10.11.3 that write significant output, I occasionally see:

Traceback (most recent call last):
  File "/opt/boxen/pyenv/versions/3.5.0/bin/honcho", line 11, in <module>
    sys.exit(main())
  File "/opt/boxen/pyenv/versions/3.5.0/Python.framework/Versions/3.5/lib/python3.5/site-packages/honcho/command.py", line 266, in main
    COMMANDS[args.command](args)
  File "/opt/boxen/pyenv/versions/3.5.0/Python.framework/Versions/3.5/lib/python3.5/site-packages/honcho/command.py", line 213, in command_start
    manager.loop()
  File "/opt/boxen/pyenv/versions/3.5.0/Python.framework/Versions/3.5/lib/python3.5/site-packages/honcho/manager.py", line 106, in loop
    self._printer.write(msg)
  File "/opt/boxen/pyenv/versions/3.5.0/Python.framework/Versions/3.5/lib/python3.5/site-packages/honcho/printer.py", line 46, in write
    self.output.write(prefix + line + "\n")
BlockingIOError: [Errno 35] write could not complete without blocking
nickstenning commented 8 years ago

Thanks a lot for filing this issue! Are you able to provide a minimal test case that demonstrates this problem?

jacebrowning commented 8 years ago

I'm still working on that. It's occurring fairly regularly in my setup, but that's not a minimal test case.

A potentially related symptom is honcho stopping all terminal output midsteam while the child processes continue to run (as evidenced by other activity). Is there any way to get a verbose log every time honcho tries to write?

nickstenning commented 3 years ago

I'm going to close this issue. If you can still reproduce it (and especially if you have instructions on how to reproduce it) please feel free to reopen.