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[OpenStack Infra <1821708@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/647703
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=04f23958e63a5c74134fd2e9376fa8ed00eabbb2
Submitter: Zuul
Branch:    master

commit 04f23958e63a5c74134fd2e9376fa8ed00eabbb2
Author: Dirk Mueller <dirk@xxxxxxxx>
Date:   Tue Mar 26 11:18:51 2019 +0100

    Avoid iterating over all of the segment data just for counting
    
    getting the full collection (which includes iterating over it
    and populating attributes) just to gather the count of it
    is wasteful. we can just use the count api.
    
    Change-Id: I1b216cb2c8c5b612f12554454d5721a14975f138
    Closes-Bug: #1821708


** Changed in: neutron
       Status: Triaged => Fix Released

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https://bugs.launchpad.net/bugs/1821708

Title:
  neutron-server high cpu usage in host_routes_after_create

Status in neutron:
  Fix Released

Bug description:
  A lot of cpu (17%) of neutron-server is spent in a single function
  called host_routes_after_create. we should try to optimize this.

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