On Oct 2, 5:25 pm, Omry Yadan <[EMAIL PROTECTED]> wrote:
> > Please clarify your hosting configuration. What do you mean by WSGI?
>
> > Do you mean, running Trac under Apache/mod_wsgi?
>
> > Or do you mean, running tracd and proxying Apache through to tracd?
>
> > Or do you mean, running Trac under some other WSGI server and proxying
> > Apache through to that WSGI server instance?
>
> > The link you give for mod_status doesn't work, at least via Google
> > groups.
>
> using mod_wsgi in apache2.
But what version of mod_wsgi. Make sure you are using version 2.3 if
using older version.
> this is my vhost file :
>
> IWSGIDaemonProcess firestats.cc user=omry group=omry threads=25
> maximum-requests=100
I would use more than 100 requests for maximum-requests unless the
memory leaks in your application are quite bad. Value of 1000 would be
more reasonable.
If you are use mod_wsgi 2.X, there is a deadlock timeout of 300
seconds and so if the whole process was being deadlocked by problem
code, it should automatically kill of process and restart it. Although
this will not help if Python code had released GIL and were hung on
access to back end database.
For this latter situation, you can add to WSGIDaemonProcess the
option:
inactivity-timeout=120
If all threads get hung and nothing happens for 120 seconds, the
process should be automatically be killed off and restarted. This at
least may get you out of situation where manual intervention required.
Other than that, looks perhaps that database requests may be hanging.
You possibly need to attach gdb to stuck process and look at stack
traces to see if stuck in third party C extension module such as a
database module. See:
http://code.google.com/p/modwsgi/wiki/DebuggingTechniques#Debugging_Crashes_With_GDB
for pointers on how to do that.
Graham
> <VirtualHost *:80>
> WSGIProcessGroup firestats.cc
> WSGIApplicationGroup %{GLOBAL}
>
> ServerName firestats.cc
> ServerAliaswww.firestats.cc
> ServerAdmin omry
> ErrorLog /home/omry/logs/firestats.cc/error.log
>
> WSGIScriptAlias / /home/omry/www/trac/trac.wsgi
> SetEnv trac.env_path /home/omry/www/trac/firestats.cc
> </VirtualHost>
>
> Attached a zip with the html file, hopefully this will work better.
>
> Thanks.
>
> status.zip
> 7KViewDownload
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