asciitaxi's questions

My setup is django 1.3 and the default mod_wsgi and apache packages for ubuntu 10.04. I tested one view of my app on my development VM (DEBUG and debugging toolbar off):

ab -n 200 -c 5 http://127.0.0.1/

and got 4 requests per second. This seemed slow so I simplified the queries, used indexes, etc. to the point where debugging toolbar tells me I have 4 queries taking 8ms. Running the same test, I only get 8 requests per second. The CPU seems to be at 100% the whole time. This seems quite slow for what is now a quite simple view, but it is just a low powered VM.

I decided to start up a large ec2 instance (4 cpu) to see what kind of performance I would get on that class of machine and was surprised to only get 13 requests per second. How can I change the configuration of apache/mod_wsgi to get more performance out of this class of machine?

I think I am using worker rather than prefork:

$ /usr/sbin/apache2 -l
Compiled in modules:
  core.c
  mod_log_config.c
  mod_logio.c
  worker.c
  http_core.c
  mod_so.c

My worker configuration is:

<IfModule mpm_worker_module>
    StartServers          2   
    MinSpareThreads      25  
    MaxSpareThreads      75  
    ThreadLimit          64  
    ThreadsPerChild      25  
    MaxClients          150 
    MaxRequestsPerChild   0   
</IfModule>

and my WSGI settings look like this:

WSGIScriptAlias / /home/blah/site/proj/wsgi.py
WSGIDaemonProcess blah user=blah group=blah processes=1 threads=10
WSGIProcessGroup blah

Thanks very much for your help!

i've got a django app running on apache behind an nginx reverse proxy. Nginx takes requests on port 80 and forwards them to apache on 127.0.0.1:81. This works fine.

Now I want to run phpbb on apache under /forums. My problem is that when phpbb does a redirect, it seems to redirect to the internal apache port, rather than port 80. So, for instance when I first go to http://my-dev-server/forums to configure php bb, it immediately redirects to http://127.0.0.1:81/forums/install/index.php.

Is there something I need to do in nginx/apache/phpbb config to get it to redirect to the external port? Thanks very much!