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[Itsuro Oda <oda@xxxxxxxxxxxxx>]

Public bug reported:

You can observe this phenomenon from any jenkins log easily.

For example:
http://logs.openstack.org/32/147032/2/check/check-tempest-dsvm-neutron-full/d5c65a2/logs/screen-q-vpn.txt.gz#_2015-01-15_00_43_37_878
---
2015-01-15 00:43:37.878 2818 DEBUG neutron.openstack.common.periodic_task [-] Running periodic task VPNAgent.periodic_sync_routers_task run_periodic_tasks /opt/stack/new/neutron/neutron/openstack/common/periodic_task.py:199
2015-01-15 00:43:37.878 2818 DEBUG neutron.agent.l3.agent [-] Starting periodic_sync_routers_task - fullsync:False periodic_sync_routers_task /opt/stack/new/neutron/neutron/agent/l3/agent.py:1094
2015-01-15 00:43:57.778 2818 DEBUG neutron.agent.l3.agent [-] Report state task started _report_state /opt/stack/new/neutron/neutron/agent/l3/agent.py:1211
2015-01-15 00:43:57.782 2818 DEBUG neutron.agent.l3.agent [-] Report state task successfully completed _report_state /opt/stack/new/neutron/neutron/agent/l3/agent.py:1235
2015-01-15 00:44:27.778 2818 DEBUG neutron.agent.l3.agent [-] Report state task started _report_state /opt/stack/new/neutron/neutron/agent/l3/agent.py:1211
2015-01-15 00:44:27.785 2818 DEBUG neutron.agent.l3.agent [-] Report state task successfully completed _report_state /opt/stack/new/neutron/neutron/agent/l3/agent.py:1235
2015-01-15 00:44:57.778 2818 DEBUG neutron.agent.l3.agent [-] Report state task started _report_state /opt/stack/new/neutron/neutron/agent/l3/agent.py:1211
2015-01-15 00:44:57.783 2818 DEBUG neutron.agent.l3.agent [-] Report state task successfully completed _report_state /opt/stack/new/neutron/neutron/agent/l3/agent.py:1235
2015-01-15 00:44:57.878 2818 DEBUG neutron.openstack.common.periodic_task [-] Running periodic task VPNAgent.periodic_sync_routers_task run_periodic_tasks /opt/stack/new/neutron/neutron/openstack/common/periodic_task.py:199
2015-01-15 00:44:57.878 2818 DEBUG neutron.agent.l3.agent [-] Starting periodic_sync_routers_task - fullsync:False periodic_sync_routers_task /opt/stack/new/neutron/neutron/agent/l3/agent.py:1094
---

periodic_interval is 40 here.
periodic task is expected to run at 00:43:37, 00:44:17 and 00:44:57. But execution at 00:44:17 is skipped.

** Affects: neutron
     Importance: Undecided
         Status: New


** Tags: l3-ipam-dhcp

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https://bugs.launchpad.net/bugs/1411085

Title:
  L3-agent periodic task is skipped often

Status in OpenStack Neutron (virtual network service):
  New

Bug description:
  You can observe this phenomenon from any jenkins log easily.

  For example:
  http://logs.openstack.org/32/147032/2/check/check-tempest-dsvm-neutron-full/d5c65a2/logs/screen-q-vpn.txt.gz#_2015-01-15_00_43_37_878
  ---
  2015-01-15 00:43:37.878 2818 DEBUG neutron.openstack.common.periodic_task [-] Running periodic task VPNAgent.periodic_sync_routers_task run_periodic_tasks /opt/stack/new/neutron/neutron/openstack/common/periodic_task.py:199
  2015-01-15 00:43:37.878 2818 DEBUG neutron.agent.l3.agent [-] Starting periodic_sync_routers_task - fullsync:False periodic_sync_routers_task /opt/stack/new/neutron/neutron/agent/l3/agent.py:1094
  2015-01-15 00:43:57.778 2818 DEBUG neutron.agent.l3.agent [-] Report state task started _report_state /opt/stack/new/neutron/neutron/agent/l3/agent.py:1211
  2015-01-15 00:43:57.782 2818 DEBUG neutron.agent.l3.agent [-] Report state task successfully completed _report_state /opt/stack/new/neutron/neutron/agent/l3/agent.py:1235
  2015-01-15 00:44:27.778 2818 DEBUG neutron.agent.l3.agent [-] Report state task started _report_state /opt/stack/new/neutron/neutron/agent/l3/agent.py:1211
  2015-01-15 00:44:27.785 2818 DEBUG neutron.agent.l3.agent [-] Report state task successfully completed _report_state /opt/stack/new/neutron/neutron/agent/l3/agent.py:1235
  2015-01-15 00:44:57.778 2818 DEBUG neutron.agent.l3.agent [-] Report state task started _report_state /opt/stack/new/neutron/neutron/agent/l3/agent.py:1211
  2015-01-15 00:44:57.783 2818 DEBUG neutron.agent.l3.agent [-] Report state task successfully completed _report_state /opt/stack/new/neutron/neutron/agent/l3/agent.py:1235
  2015-01-15 00:44:57.878 2818 DEBUG neutron.openstack.common.periodic_task [-] Running periodic task VPNAgent.periodic_sync_routers_task run_periodic_tasks /opt/stack/new/neutron/neutron/openstack/common/periodic_task.py:199
  2015-01-15 00:44:57.878 2818 DEBUG neutron.agent.l3.agent [-] Starting periodic_sync_routers_task - fullsync:False periodic_sync_routers_task /opt/stack/new/neutron/neutron/agent/l3/agent.py:1094
  ---

  periodic_interval is 40 here.
  periodic task is expected to run at 00:43:37, 00:44:17 and 00:44:57. But execution at 00:44:17 is skipped.

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