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Add note on tuning postgres
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@ -49,6 +49,24 @@ As with Debian/Ubuntu, postgres support depends on the postgres python connector
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export PATH=/usr/pgsql-9.4/bin/:$PATH
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export PATH=/usr/pgsql-9.4/bin/:$PATH
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pip install psycopg2
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pip install psycopg2
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Tuning Postgres
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===============
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The default settings should be fine for most deployments. For larger scale
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deployments tuning some of the settings is recommended, details of which can be
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found at https://wiki.postgresql.org/wiki/Tuning_Your_PostgreSQL_Server.
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In particular, we've found tuning the following values helpful for performance:
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- ``shared_buffers``
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- ``effective_cache_size``
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- ``work_mem``
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- ``maintenance_work_mem``
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- ``autovacuum_work_mem``
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Note that the appropriate values for those fields depend on the amount of free
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memory the database host has available.
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Synapse config
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Synapse config
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==============
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==============
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@ -129,8 +147,8 @@ Once that has completed, change the synapse config to point at the PostgreSQL
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database configuration file ``homeserver-postgres.yaml``::
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database configuration file ``homeserver-postgres.yaml``::
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./synctl stop
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./synctl stop
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mv homeserver.yaml homeserver-old-sqlite.yaml
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mv homeserver.yaml homeserver-old-sqlite.yaml
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mv homeserver-postgres.yaml homeserver.yaml
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mv homeserver-postgres.yaml homeserver.yaml
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./synctl start
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./synctl start
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Synapse should now be running against PostgreSQL.
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Synapse should now be running against PostgreSQL.
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