Hi,
I'm developping a monitoring application, which use a classic
XMLHttpRequest object to get data from the server every second.
The object is calling a route ('/test', for instance), and the
view_callable is simply returning a Response object built from a string
(which is generated by the application).
I've realized that my application's memory use was increasing over time,
and after several tests, I can tell that this memory leak does not come
from the generation of the string itself, but from the view_callable
processing.
To confirm it, I've created a simple project who looks like this :
*__init__.py*
from pyramid.config import Configurator
>
def main(global_config, **settings):
> """ This function returns a Pyramid WSGI application.
> """
> config = Configurator(settings=settings)
> config.add_static_view('static', 'static', cache_max_age=3600)
> config.add_route('home', '/')
> config.add_route('test','/test')
> config.scan()
> return config.make_wsgi_app()
*views.py*
from pyramid.view import view_config
> from pyramid.response import Response
> import random
>
@view_config(route_name='home', renderer='templates/mytemplate.pt')
> def my_view(request):
> return {}
>
@view_config(route_name='test')
> def test_view(request):
> return Response(str(random.random()))
*mytemplate.pt*
<p id="test"></p>
> <script type="text/javascript">
>
> function test() {
> var xhr = new XMLHttpRequest();
>
> xhr.onreadystatechange = function() {
> if (xhr.readyState == 4 && (xhr.status == 200 || xhr.status == 0)) {
> document.getElementById('test').innerHTML = xhr.responseText;
> window.setTimeout(test, 500);
> }
> };
> xhr.open("GET", '/test', true);
> xhr.send(null);
> }
>
> test();
>
> </script>
The memory use of this application is indeed increasing over time,
especially when a lot of clients are connected.
Is Pyramid caching the response of my test_view in memory, and not
releasing it properly when the response changes ?
What would be the best way to achieve the same behaviour without having
such an increase of memory use ?
Thanks in advance.
--
You received this message because you are subscribed to the Google Groups
"pylons-discuss" group.
To view this discussion on the web visit
https://groups.google.com/d/msg/pylons-discuss/-/JsSM85Ud2s0J.
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/pylons-discuss?hl=en.
