Apache Django Mod_Wsgi – reload application automatically

At a guess, you are not running latest mod_wsgi 2.X version and are using Opera browser.

There is a known issue with Opera and its use of HTTP 100-continue when using mod_wsgi daemon mode. This issue was fixed in mod_wsgi 2.4.

Since though you don't say what version of mod_wsgi you are using, nor which browser you are using, this is only a guess.

I actually have my doubts that mod_wsgi is leaking. My guess is that your Django app is leaking. I have personally never found any evidence of mod_wsgi leaking memory and I run half a dozen mod_wsgi servers.

Django however is a different story. It's a huge project and in some modules there will be some memory leaked. But most (all?) of the known problems have been fixed in Django 1.1+.

So... I am guessing that something in your script is leaking. Are you running any specific code that could cause problems? What kind of test are you running exactly? A full site test with something like siege? Or a simple test on 1 page with ab?

Regardless, please show the code you are running and/or test if you still have memory leaks with something as simple as this:

def hello_world(request):
    return HttpResponse('Hello World!', mimetype='text/plain')