** Changed in: neutron/juno
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1420032
Title:
remove_router_interface doesn't scale well with dvr routers
Status in neutron:
Fix Released
Status in neutron juno series:
Fix Released
Bug description:
With dvr enabled , neutron remove-router-interface significantly
degrades in response time as the number of l3_agents and the number of
routers increases. A significant contributor to the poor performance
is due to check_ports_exist_on_l3agent. The call to
get_subnet_ids_on_router returns an empty list since the port has
already been deleted by this point. The empty subnet list is then
used as a filter to the subsequent call core_plugin.get_ports which
unexpectedly returns all ports instead of an empty list of ports.
Erroneously looping through the entire list of ports is the biggest
contributor to the poor scalability.
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