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[shihanzhang <shihanzhang@xxxxxxxxxx>]

Public bug reported:

this problem was found in master branch, but I think it also affect liberty.
reproduce steps:
1. create 100 VMs in default security group
2. bulk delete these VMs
I found the ipset can't be clear as soon as possible, because there were much ip_conntrack need to be clean, so the ovs-agent were doing this work.
For this problem, what I can think is letting ovs-agent use eventlet.GreenPool to delete ip_conntrack, do other have good idea?

** Affects: neutron
     Importance: Undecided
     Assignee: shihanzhang (shihanzhang)
         Status: New

** Changed in: neutron
     Assignee: (unassigned) => shihanzhang (shihanzhang)

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https://bugs.launchpad.net/bugs/1513765

Title:
  bulk delete ports cost ovs-agent much time

Status in neutron:
  New

Bug description:
  this problem was found in master branch, but I think it also affect liberty.
  reproduce steps:
  1. create 100 VMs in default security group
  2. bulk delete these VMs
  I found the ipset can't be clear as soon as possible, because there were much ip_conntrack need to be clean, so the ovs-agent were doing this work.
  For this problem, what I can think is letting ovs-agent use eventlet.GreenPool to delete ip_conntrack, do other have good idea?

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