Impact on performances

Using PoWA can have a small negative impact on your PostgreSQL server performances. It is hard to evaluate precisely this impact, as it can come from different parts.

First of all, you need to activate at least pg_stat_statements extension, and possibly the other supported Stats Extensions of your choice. Those extensions can slow down your instance, depending on how you configure them.

If you don’t use the Remote setup mode, the data will be stored locally on a regular basis. Depending on the snapshot frequency, the overhead could be important. You also have to consider disk usage, which will impact at least the backups.

Using the UI will also run queries on your databases. With the Remote setup mode, there should be very few queries run on the target databases though.