Comment 3 for bug 1289101

Periodic task mentioned in that case is actually "publish_exist_events" - notification about active instances. These notifications may be very useful, especially if you want to charge a user based on the numbers of the active instances (thanks to slicknik for the great explanation), however those who experience the problem described in that case and doesn't need these notifications can turn it off by setting "exists_notification_transformer" configuration parameter in trove-taskmanager.conf to None.

exists_notification_transformer = None