I have the same problem
i also Using WSGIApplicationGroup %{GLOBAL}, but it appear " Daemon process
deadlock timer expired, stopping process"
if u have solved the problem , can you reply to me ?
Thanks
在 2019年1月22日星期二 UTC+8下午10:37:58，Shakim Mohammed写道：
>
> Hello,
>
> I have a Flask + Sqlalchemy application(connecting to a Sybase database)
> that I am trying to run in Apache + mod_wsgi setup
>
> Few pointers on my wsgi setup:
>
> - Using WSGIDaemonProcess <nameOfApp> processes=x threads=y
> - Using WSGIApplicationGroup %{GLOBAL}
>
> No matter what combination of values of *x* and *y* I use, after
> processing some request, my apache/mod_wsgi hangs up for sometime showing
> logs like :
>
> - Daemon process deadlock timer expired, stopping process <>
> - Shutdown process <nameOfApp>
> - Aborting process <nameOfApp>
> - Exiting process <nameOfApp>
>
> I believe it hangs for 300 seconds(which is default deadlock-timeout)
> If I set deadlock-timeout = 60, apache/mod_wsgi recovers in 60sec
>
> Few other logs that I see are :
>
> - Truncated or oversized response headers received from daemon process
> <nameOfApp>
> - server seems busy, (you may need to increase StartServers, or
> Min/MaxServers, spawning 16 children, there are three idle
>
> What could be the reason of this deadlock and other logs shown above?
>
> Could this be because of a rogue C extension as pointed out by Graham at
> various places?
>
> There are bunch of third party modules that I am using which has C
> extension like -> http://python-sybase.sourceforge.net/download.html
>
> Is there anyway to fix this or make it more stable(not going into deadlock
> too frequently and giving 500 to clients)?
>
> FYI, I am using prefork instead of worker at this moment. I am not loading
> unnecessary modules like mod_php.
> The only modules that I am loading in my apache conf are
> "mod_authz_host.so", "mod_log_config.so" and "mod_wsgi.so"
> I believe the issue I am trying to highlight is totally independent of
> whether it is a prefork or worker setup
>
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