ESS Sizing
The values provided below are indicative and might vary a lot depending on your setup, the volume of federation traffic, active usage, bridged use-cases, integrations enabled, etc.
CPU & Memory
Synapse Homeserver
The installer comes with default installation profiles which configure workers depending on your setup. For each profile :
- CPU is the maximum cpu cores the Homeserver can request
- Memory is the average memory the Homeserver will require
| 1–500 users | 501–2500 users | 2501–10000 users | |
|---|---|---|---|
| unfed | 2 CPU, 2000 MiB RAM | 6 CPU, 5650 MiB RAM | 10 CPU, 8150 MiB RAM |
| small fed | 2 CPU, 2000 MiB RAM | 6 CPU, 5650 MiB RAM | 10 CPU, 8150 MiB RAM |
| open fed | 5 CPU, 4500 MiB RAM | 9 CPU, 8150 MiB RAM | 15 CPU, 11650 MiB RAM |
PostgresSQL
Synapse Postgres Server
Synapse postgres server will require the following resources :
| 1–500 users | 501–2500 users | 2501–10000 users | |
|---|---|---|---|
| unfed | 1 CPU, 4 GiB RAM | 2 CPU, 12 GiB RAM | 4 CPU, 16 GiB RAM |
| small fed | 2 CPU, 6 GiB RAM | 4 CPU, 18 GiB RAM | 8 CPU, 28 GiB RAM |
| open fed | 3 CPU, 8 GiB RAM | 5 CPU, 24 GiB RAM | 10 CPU, 32 GiB RAM |
Operator & Updater
The Updater memory usage remains at 256Mi. At least 1 CPU should be provisioned for the operator and the updater.
The Operator memory usage scales linearly with the number of integrations you deploy with ESS. It's memory usage will remain low, but might spike up to 256Mi x Nb Integrations during deployment and configuration changes.
Volumes
Synapse Medias
The disk usage to expect after a year can be calculated using the following formula : average media size x average number of media uploaded / day x active users x 365.
Media retention can be configured with the configuration option in Synapse/Config/Data Retention of the installer.
Postgres DB size
The disk usage to expect after a year can be calculated using the following formula :
- If Federation is enabled,
active usersx0.9GB. - If Federation is disabled or limited,
active usersx0.6GB.