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[Oleg Bondarev <obondarev@xxxxxxxxxxxx>]

Public bug reported:

Scale tests show that sometimes VMs are not able to spawn because of timeouts on port creation.
Neutron server logs show that port creation time grows due to dvr arp table updates being sent to each l3 dvr agent hosting the router one by one - this takes > 90% of time: http://paste.openstack.org/show/560761/

** Affects: neutron
     Importance: High
     Assignee: Oleg Bondarev (obondarev)
         Status: Confirmed


** Tags: l3-dvr-backlog loadimpact

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https://bugs.launchpad.net/bugs/1614452

Title:
  Port create time grows at scale due to dvr arp update

Status in neutron:
  Confirmed

Bug description:
  Scale tests show that sometimes VMs are not able to spawn because of timeouts on port creation.
  Neutron server logs show that port creation time grows due to dvr arp table updates being sent to each l3 dvr agent hosting the router one by one - this takes > 90% of time: http://paste.openstack.org/show/560761/

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