x/vmware-nsx
Code Issues Proposed changes

Change report_interval from 4 to 30, agent_down_time from 9 to 75

Browse Source 
report_interval is how often an agent sends out a heartbeat to the
service. The Neutron service responds to these 'report_state' RPC
messages by updating the agent's heartbeat DB record.
The last heartbeat is then compared to the configured
agent_down_time to determine if the agent is up or down.
The agent's status is used when scheduling networks on DHCP
and L3 agents.

In the spirit of sane defaults suited for production, these values
should be bumped to reduce the load on the Neutron service
dramatically, freeing up CPU time to perform intensive operations.

DocImpact
Closes-Bug: #1293083
Change-Id: I77bcf8f66f74ba55513c989caead1f96c92b9832
This commit is contained in:
Assaf Muller 2014-03-16 13:01:18 +02:00
parent 1e81fdb1ea
commit af08f58d0a
4 changed files with 5 additions and 5 deletions
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4
etc/neutron.conf
View File

@ -225,7 +225,7 @@ notification_driver = neutron.openstack.common.notifier.rpc_notifier
# =========== items for agent management extension =============
# Seconds to regard the agent as down; should be at least twice
# report_interval, to be sure the agent is down for good
# agent_down_time = 9
# agent_down_time = 75
# =========== end of items for agent management extension =====
# =========== items for agent scheduler extension =============
@ -385,7 +385,7 @@ notification_driver = neutron.openstack.common.notifier.rpc_notifier
# =========== items for agent management extension =============
# seconds between nodes reporting state to server; should be less than
# agent_down_time, best if it is half or less than agent_down_time
# report_interval = 4
# report_interval = 30
# =========== end of items for agent management extension =====

2
neutron/agent/common/config.py
View File

@ -32,7 +32,7 @@ ROOT_HELPER_OPTS = [
]
AGENT_STATE_OPTS = [
cfg.FloatOpt('report_interval', default=4,
cfg.FloatOpt('report_interval', default=30,
help=_('Seconds between nodes reporting state to server; '
'should be less than agent_down_time, best if it '
'is half or less than agent_down_time.')),

2
neutron/db/agents_db.py
View File

@ -33,7 +33,7 @@ from neutron.openstack.common import timeutils
LOG = logging.getLogger(__name__)
cfg.CONF.register_opt(
cfg.IntOpt('agent_down_time', default=9,
cfg.IntOpt('agent_down_time', default=75,
help=_("Seconds to regard the agent is down; should be at "
"least twice report_interval, to be sure the "
"agent is down for good.")))

2
neutron/tests/unit/nec/test_nec_agent.py
View File

@ -196,7 +196,7 @@ class TestNecAgent(TestNecAgentBase):
def test_report_state_installed(self):
self.loopingcall.assert_called_once_with(self.agent._report_state)
instance = self.loopingcall.return_value
instance.start.assert_called_once_with(interval=4)
self.assertTrue(instance.start.called)
def _check_report_state(self, cur_ports, num_ports, fail_mode,
first=False):