Hi everyone, During the design summit in Austin, there was some discussion about switching Nova services from Tornado to Twisted or Eventlet. From what I've seen that is still an open question, is that correct?
I ran some performance tests on the two and they are about the same, but Eventlet did do slightly better (see http://oddments.org/?p=494). So I think it comes down to available features we need from a framework and ease of use. Swift is using Eventlet, which may give a vote in that direction since that gives us some Eventlet expertise already in the OpenStack ecosystem. For web-based services it shouldn't matter too much since the WSGI interface should be fairly interchangeable. I'm leaning towards Eventlet since it provides a more straight forward approach to programming, letting the coroutines and method wrappers underneath take care of the non-blocking hooks. This will make it easier for new developers jumping in to wrap their head around the code, where Twisted has a bit more of a learning curve for those not familiar with non-blocking/deferred techniques. Thoughts? -Eric _______________________________________________ Mailing list: https://launchpad.net/~nova Post to : [email protected] Unsubscribe : https://launchpad.net/~nova More help : https://help.launchpad.net/ListHelp
