Re: Problem with PostgreSQL 18 and semaphores

[Martin Husemann <martin%duskware.de@localhost>]

On Sat, Oct 25, 2025 at 08:28:13PM +0200, Marc Baudoin wrote:
> Are the default values for kern.ipc.semmni and kern.ipc.semmns
> underestimated on NetBSD?

We have not seen many applications using lots of semaphores so far.

> Should they be changed in future releases?

Maybe.

> Is it a bug in PostgreSQL 18?

I don't know but we should find out. Maybe ask upstream?
It is possible that they added code using a lot more semaphores on 
purpose, and they should document that ... somewhere.

I am still using postgres 14 and it is happy with the 10/60 defaults.

(I should prepare for an update once this thread has found a good solution)

Martin