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Hi,

This command is called by the get_vif_ports() method in agent/linux/ovs_lib.py, which is called in a "for loop" style for all ports by delete_ports() in the same module, and agent/ovs_cleanup_util.py.

So, my guess is that for some reason, neutron is trying to delete ports, or clean them up - and more often than normal. To solve the problem, we need to find out why - the quantum logs probably have more information on what is going on.