a6c193f3eb
Calling threading.Event.wait() when using eventlet results in a busy loop calling epoll_wait, because the Python 2.x threading.Condition.wait() implementation busy-waits by calling sleep() with very small values (0.0005..0.05s). Because sleep() is monkey-patched by eventlet, this results in many very short timers being added to the eventlet hub, and forces eventlet to constantly epoll_wait looking for new data unecessarily. This utilizes a new Event from eventletutils which conditionalizes the event primitive depending on whether or not eventlet is being used. If it is, eventlet.event.Event is used instead of threading.Event. The eventlet.event.Event implementation does not suffer from the same busy-wait sleep problem. If eventlet is not used, the previous behavior is retained. Change-Id: I5c211092d282e724d1c87ce4d06b6c44b592e764 Depends-On: Id33c9f8c17102ba1fe24c12b053c336b6d265501 Closes-bug: #1518430
Oslo Messaging Library
The Oslo messaging API supports RPC and notifications over a number of different messaging transports.
- License: Apache License, Version 2.0
- Documentation: http://docs.openstack.org/developer/oslo.messaging
- Source: http://git.openstack.org/cgit/openstack/oslo.messaging
- Bugs: http://bugs.launchpad.net/oslo.messaging