| From: | Peter Eisentraut <peter(at)eisentraut(dot)org> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Andrew Dunstan <andrew(at)dunslane(dot)net>, Alexander Lakhin <exclusion(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Regression tests fail on OpenBSD due to low semmns value |
| Date: | 2024-12-18 07:39:25 |
| Message-ID: | b9ffd09a-0b2f-4047-a182-97b2739b0a6c@eisentraut.org |
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| 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?
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