If desperate, you could get a stack trace out of the process by attaching gdb to it as documented in:
http://code.google.com/p/modwsgi/wiki/DebuggingTechniques#Debugging_Crashes_With_GDB and executing 'thread apply all bt' in gdb. This sort of problem usually occurs due to sub interpreters, but you are already forcing use of main interpreter in that daemon process group. Have you done the obvious of ensuring not loading mod_python into same Apache. It can cause odd issues like this. Graham On 27 November 2012 13:11, simonb <[email protected]> wrote: > Dear All > > My apache server (2.2.23 pre-fork) is hosting 13 Django sites with modwsgi > (3.4). They all have identical config file and all work fine apart for one. > When I enable daemon mode in this one virtual host file the site stops > working. It will serve one request then hang, then serve one then hang... > Without daemon mode it works fine. Am I hitting some process limit? As far > as I can tell there is not any process limit. Isn't daemon mode independent > of any mpm process limits? And why would it be this particular one I do not > know. Order of evaluation? > > The WSGI config lines are below. If I uncomment the last two - it starts > hanging. The other working sites have the same configs - with different > names of course. > > WSGIScriptAlias / "/mnt/clients1/ > vb.com/dj/venv/lib/python2.6/site-packages/vb/apache/wsgi.py" > WSGIPassAuthorization On > #WSGIDaemonProcess villabeige.com user=villabeige-wsgi > group=villabeige-wsgi threads=25 > #WSGIProcessGroup villabeige.com > > Any thoughts and pointers as to how I might debug this greatly > appreciated. I've tried turning on logging of wsgi request/response as > detailed on the wiki but they look fine. After restart I get a first > request/response then a request but no response. > > Thanks > > Simon > > > > > -- > You received this message because you are subscribed to the Google Groups > "modwsgi" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/modwsgi/-/KrOu2SJ6QH8J. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/modwsgi?hl=en. > -- You received this message because you are subscribed to the Google Groups "modwsgi" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/modwsgi?hl=en.
