Re: Potential "AIO / io workers" inter-worker locking issue in PG18?

Then as follow up on that: is there anything you still need from me, or
is the information I gave so far including the last requested answers
and data of perf, enough to give you at least a decent start to figure
out where the issue is?

Op 10-10-2025 om 23:30 schreef Andres Freund:
> Hi,
>
> On October 10, 2025 5:26:38 PM EDT, Marco Boeringa <marco(at)boeringa(dot)demon(dot)nl> wrote:
>> Just found out about the other thread, which seems to describe an issue that may well be related to the problems I observe in my multi-threaded Python implementation using PostgreSQL 18:
>>
>> https://www.postgresql.org/message-id/flat/CA%2BhUKG%2BHh7u3YpPLKQS%2BB7KJu0Bw99EjhuPuvBRVccDfgod95g%40mail.gmail.com#969d704180758e8dbd124604206175e0
>>
>> As I have zero experience compiling PostgreSQL from scratch and PostgreSQL development in general, I will unfortunately avoid going down the rabbit hole of such an attempt to be able to test the patch, but will eagerly await PG18.1 which hopefully will have it included and might fix the issues I observed.
> If that issue were causal you'd see something in pg_aios and the issue wouldn't be present with worker or sync io methods. Nor would you see high cpu utilization. This is a different issue, likely not aio related.
>
> Greetings,
>
> Andres