funkwhale/docs/installation/optimization.rst

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Optimizing your Funkwhale instance
==================================
Depending on your requirements, you may want to reduce as much as possible
Funkwhale's memory footprint.
Reduce workers concurrency
--------------------------
Asynchronous tasks are handled by a celery worker, which will by default
spawn a worker process per CPU available. This can lead to a higher
memory usage.
You can control this behaviour using the ``--concurrency`` flag.
For instance, setting ``--concurrency=1`` will spawn only one worker.
This flag should be appended after the ``celery -A funkwhale_api.taskapp
worker`` command in your :file:`docker-compose.yml` file if your using Docker,
or in your :file:`/etc/systemd/system/funkwhale-worker.service` otherwise.
.. note::
Reducing concurrency comes at a cost: asynchronous tasks will be processed
more slowly. However, on small instances, this should not be an issue.
Switch from prefork to solo pool
--------------------------------
Using a different pool implementation for Celery tasks may also help.
Using the ``solo`` pool type should reduce your memory consumption.
You can control this behaviour using the ``--pool=solo`` flag.
This flag should be appended after the ``celery -A funkwhale_api.taskapp worker``
command in your :file:`docker-compose.yml` file if you're using Docker, or in
your :file:`/etc/systemd/system/funkwhale-worker.service` otherwise.