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[Nicolas Bock <1943639@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

The time complexity of opening the project/instances/attach_interface
form box is O(N) where N is the number of networks in the project. This
is due to

https://opendev.org/openstack/horizon/src/branch/master/openstack_dashboard/dashboards/project/instances/utils.py#L210

Which loops over the networks and requests the ports associated with the
network. For large projects this scaling behavior can become
prohibitive.

** Affects: horizon
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1943639

Title:
  project/instances/attach_interface has O(N) scaling time complexity
  for opening form

Status in OpenStack Dashboard (Horizon):
  New

Bug description:
  The time complexity of opening the project/instances/attach_interface
  form box is O(N) where N is the number of networks in the project.
  This is due to

  https://opendev.org/openstack/horizon/src/branch/master/openstack_dashboard/dashboards/project/instances/utils.py#L210

  Which loops over the networks and requests the ports associated with
  the network. For large projects this scaling behavior can become
  prohibitive.

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