36 lines
1.5 KiB
YAML
36 lines
1.5 KiB
YAML
---
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upgrade:
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- |
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The ``ironic-dbsync upgrade`` command for this version of ironic will add
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additional database indexes on the ``nodes`` table columns below.
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Depending on database size and complexity, this will take time to complete
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for every single index to be created. On MySQL or MariaDB, these indexes
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will only be created if an index does not already exist matching the
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field name with "_idx"
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appended.:
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* ``owner``
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* ``lessee``
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* ``driver``
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* ``provision_state``
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* ``reservation``
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* ``conductor_group``
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* ``resource_class``
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An example of the SQL commands to generate these indexes can be found
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in the `tuning <htts://docs.openstack.org/ironic/latest/admin/tuning.html>`_
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documentation.
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In testing with mock data, each column took approximately about 4 seconds
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per column to be indexed on a database with 115,000 rows. The existing
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database size and underlying server load will cause this time to vary.
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Sample queries also reduced result generation from an average of ``0.40``
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seconds to an average of ``0.02`` seconds with a test data set.
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fixes:
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Improves lower-level performance issues with database activity where some
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often queried columns were not indexed when the database model was created,
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or as the model evolved. Operators seeking to pre-create these indexes may
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do so prior to upgrading. Please consult the
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`tuning`_ documentation in the Administrator's guide for the queries to leverage.
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