[Twisted-web] Different behavior of twistd with and without -n

Jean-Paul Calderone exarkun at divmod.com
Thu May 24 13:44:52 EDT 2007

On Thu, 24 May 2007 18:04:57 +0200, Terry Jones <terry at jon.es> wrote:
>>>>>> "JP" == Jean-Paul Calderone <exarkun at divmod.com> writes:
>JP> A completely wild guess is that forking is confusing PyLucene in a
>JP> fatal way.  Are you importing PyLucene in the .tac file itself?  If so,
>JP> it may help to avoid doing this, so that no code from PyLucene even
>JP> gets a chance to run until after the process has already daemonized.
>Hi JP. Thanks for the suggestion.
>Yes, the PyLucene import does happen as a result of an import in the .tac
>file. I just made some changes to delay the import until PyLucene is
>actually needed. That didn't work, and nor did further hiding the import by
>using __import__.
>Is it right that all the -n switch to twistd does is prevent the fork?

It does a couple other minor things, like changing the default logging to
go to stdout instead of twistd.log, but preventing the fork is the only big
thing, yes.


More information about the Twisted-web mailing list