--- runserver.py	2008-06-09 10:57:57.000000000 +1200
+++ runserver.py.profiler	2008-06-09 10:57:47.000000000 +1200
@@ -9,6 +9,8 @@ class Command(BaseCommand):
             help='Tells Django to NOT use the auto-reloader.'),
         make_option('--adminmedia', dest='admin_media_path', default='',
             help='Specifies the directory from which to serve admin media.'),
+        make_option('--profile', action='store_true', dest='profile',
+            help='Enable profiling. Write profiles into systems temporary directory.'),
     )
     help = "Starts a lightweight Web server for development."
     args = '[optional port number, or ipaddr:port]'
@@ -39,6 +41,7 @@ class Command(BaseCommand):
         use_reloader = options.get('use_reloader', True)
         admin_media_path = options.get('admin_media_path', '')
         shutdown_message = options.get('shutdown_message', '')
+        profile = options.get('profile', False)
         quit_command = (sys.platform == 'win32') and 'CTRL-BREAK' or 'CONTROL-C'
 
         def inner_run():
@@ -50,7 +53,19 @@ class Command(BaseCommand):
             print "Quit the server with %s." % quit_command
             try:
                 path = admin_media_path or django.__path__[0] + '/contrib/admin/media'
-                handler = AdminMediaHandler(WSGIHandler(), path)
+                if profile:
+                    import hotshot, time, tempfile
+                    def make_profiler_handler(inner_handler): 
+                        def handler(environ, start_response):
+                            path = environ['PATH_INFO'].strip("/").replace('/', '.')
+                            fd, profname = tempfile.mkstemp('.prof', '%s.%3f' % (path, time.time()))
+                            os.close(fd)
+                            prof = hotshot.Profile(profname)
+                            return prof.runcall(inner_handler, environ, start_response) 
+                        return handler
+                    handler = make_profiler_handler(AdminMediaHandler(WSGIHandler(), path))
+                else:
+                    handler = AdminMediaHandler(WSGIHandler(), path)
                 run(addr, int(port), handler)
             except WSGIServerException, e:
                 # Use helpful error messages instead of ugly tracebacks.