Horton

Re: Regression tests fail on OpenBSD due to low semmns value

Peter Eisentraut <peter@eisentraut.org>

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From: Peter Eisentraut <peter@eisentraut.org>
To: Andres Freund <andres@anarazel.de>, Tom Lane <tgl@sss.pgh.pa.us>
Cc: Andrew Dunstan <andrew@dunslane.net>, Alexander Lakhin <exclusion@gmail.com>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2024-12-18T07:39:25Z
Lists: pgsql-hackers 
On 16.12.24 19:19, Andres Freund wrote:
>> * Why in the world is the default value of max_wal_senders 10?
>> I find it hard to believe that there are installations using
>> more than about 3, and even there you can bet they are changing
>> a lot of other parameters.
> 
> I don't think it's that rare as logical replication also needs a walsender
> slot...  I think we're going to hurt far more users by lowering this than we'd
> help.

Here is where this change was originally discussed: 
https://www.postgresql.org/message-id/flat/CABUevEy4PR_EAvZEzsbF5s%2BV0eEvw7shJ2t-AUwbHOjT%2ByRb3A%40mail.gmail.com

The low semaphore settings on some BSD systems were also mentioned 
there.  Did anything change now that it is triggering more issues now?

Commits

  1. Try to avoid semaphore-related test failures on NetBSD/OpenBSD.