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[OpenStack Infra <2119092@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.opendev.org/c/openstack/neutron/+/956174
Committed: https://opendev.org/openstack/neutron/commit/20ee1e368ca914fbc3d197847f8a31b1b89706cf
Submitter: "Zuul (22348)"
Branch:    master

commit 20ee1e368ca914fbc3d197847f8a31b1b89706cf
Author: Rodolfo Alonso Hernandez <ralonsoh@xxxxxxxxxx>
Date:   Wed Jul 30 14:33:47 2025 +0000

    [OVN] Spread OVN metadata agent heartbeat response in time
    
    This patch implements [1] and [2] in the OVN agent
    ``SbGlobalUpdateEvent`` event class.
    
    To avoid mass response of OVN agents on heartbeat update, this patch
    postpones the "Chassis_Private" table update for random number of
    seconds in maximum range of 10 seconds. The actual value will be the
    minimum between (cfg.CONF.agent_down_time // 3) and 10 seconds.
    
    [1]https://bugs.launchpad.net/neutron/+bug/1991817
    [2]https://bugs.launchpad.net/neutron/+bug/2020215
    
    Closes-Bug: #2119092
    Signed-off-by: Rodolfo Alonso Hernandez <ralonsoh@xxxxxxxxxx>
    Change-Id: Ief7d2362d92f2d7a05bac5f7a984c5d195a41225


** Changed in: neutron
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/2119092

Title:
  [OVN] The ``SbGlobalUpdateEvent`` event in the OVN agent should
  implement LP#1991817

Status in neutron:
  Fix Released

Bug description:
  The bug LP#1991817 implemented a method to spread the update of the
  OVN Metadata agent heartbeat during a limited period of time. That
  limited the synchronization of all agents when updating their own
  "Chassis_Private" register and limited the OVN SB usage peaks.

  NOTE: above the implementation for LP#1991817 [1], it is also needed
  to implement LP#2020215 too.

  [1]https://bugs.launchpad.net/neutron/+bug/1991817
  [2]https://bugs.launchpad.net/neutron/+bug/2020215

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