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Upgrade Postgres (v16.0-5 -> v16.0-6) - adds auto-tuning

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Slavi Pantaleev
2023-10-18 08:24:52 +03:00
parent 5ba6630206
commit 29b62f77a5
6 changed files with 27 additions and 64 deletions
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docs/maintenance-synapse.md
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@ -72,8 +72,10 @@ You should then be able to browse the adminer database administration GUI at htt
Synapse's presence feature which tracks which users are online and which are offline can use a lot of processing power. You can disable presence by adding `matrix_synapse_presence_enabled: false` to your `vars.yml` file.
If you have enough compute resources (CPU & RAM), you can make Synapse better use of them by [enabling load-balancing with workers](configuring-playbook-synapse.md#load-balancing-with-workers).
Tuning Synapse's cache factor can help reduce RAM usage. [See the upstream documentation](https://github.com/matrix-org/synapse#help-synapse-is-slow-and-eats-all-my-ram-cpu) for more information on what value to set the cache factor to. Use the variable `matrix_synapse_caches_global_factor` to set the cache factor.
Tuning your PostgreSQL database will also make Synapse run significantly faster. See [maintenance-postgres.md##tuning-postgresql](maintenance-postgres.md##tuning-postgresql).
[Tuning your PostgreSQL database](maintenance-postgres.md#tuning-postgresql) could also improve Synapse performance. The playbook tunes the integrated Postgres database automatically, but based on your needs you may wish to adjust tuning variables manually. If you're using an [external Postgres database](configuring-playbook-external-postgres.md), you will aslo need to tune Postgres manually.
See also [How do I optimize this setup for a low-power server?](faq.md#how-do-i-optimize-this-setup-for-a-low-power-server).