44b159aa9f
By default number of MAC addresses which ovs stores in memory
is quite low - 2048.
Any eviction of a MAC learning table entry triggers revalidation.
Such revalidation is very costly so it cause high CPU usage by
ovs-vswitchd process.
To workaround this problem, higher value of mac-table-size
option can be set for bridge. Then this revalidation will happen
less often and CPU usage will be lower.
This patch adds config option for neutron-openvswitch-agent to allow
users tune this setting in bridges managed by agent.
By default this value is set to 50000 which should be enough for most
systems.
Change-Id: If628f52d75c2b5fec87ad61e0219b3286423468c
Closes-Bug: #1775797
(cherry picked from commit 1f8378e0ac)
15 lines
628 B
YAML
15 lines
628 B
YAML
---
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features:
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- |
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A new config option ``bridge_mac_table_size`` has been added for
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Neutron OVS agent.
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This value will be set on every Open vSwitch bridge managed by the
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openvswitch-neutron-agent in ``other_config:mac-table-size`` column
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in ovsdb.
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Default value for this new option is set to 50000 and it should be enough
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for most systems.
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More details about this option can be found in `Open vSwitch documentation
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<http://www.openvswitch.org/support/dist-docs/ovs-vswitchd.conf.db.5.html>`_
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For more information see bug
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`1775797 <https://bugs.launchpad.net/neutron/+bug/1775797>`_.
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