On Sat, Apr 20, 2024, 5:25 PM Michal Charemza <mic...@charemza.name> wrote:

> Hi,
>
> We're running PostgreSQL as essentially a data warehouse, and we have a
> few thousand roles, which are used to grant permissions on a table-by-table
> basis to a few thousand users, so a user would typically have say between 1
> and 2 thousand roles. There is also quite a lot of "churn" in terms of
> tables being created/removed, and permissions changed.
>
> The issue is that we're hitting a strange performance problem on
> connection. Sometimes it can take ~25 to 40 seconds just to connect,
> although it's often way quicker
>

can you rule out system catalog bloat ?

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