openstack-ansible-rabbitmq_.../releasenotes/notes/rabbitmq-server-mnesia-io-d9067e226c7cb19c.yaml
Gabriele 615b60df8e Improve Mnesia IO performances
With this configuration, the database Mnesia reduces the activity to the
disk. It is useful when a huge of queues/exchanges/bindings are created
and destroyed.
With the default value (100), RabbitMQ could log {Mnesia is overloaded}.
Moved to 300. The range should be between 100 and 1000.
Read [1] for more info.

[1] http://erlang.org/doc/man/mnesia.html#dump_log_write_threshold

Change-Id: I6dcfc9db02bcd8c8f0a1ebf58d9c3ceb84cae10a
2019-03-28 16:17:07 +01:00

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YAML

---
upgrade:
- |
The default Mnesia ``dump_log_write_threshold`` value
has changed to ``300`` instead of ``100`` for efficiency.
``dump_log_write_threshold`` specifies the maximum number of writes
allowed to the transaction log before a new dump of the log is performed.
Increasing this value can increase the performances
during the queues/exchanges/bindings creation/destroying.
The values should be between 100 and 1000. More detail [1].
[1] http://erlang.org/doc/man/mnesia.html#dump_log_write_threshold