Re: BUG #19369: Not documented that io_uring on kernel versions between 5.1 and below 5.6 does not work

From: Pierre Forstmann <pierre(dot)forstmann(at)gmail(dot)com>
To: surya poondla <suryapoondla4(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>
Cc: "Si, Evan" <evsi(at)amazon(dot)com>, "pgsql-bugs(at)lists(dot)postgresql(dot)org" <pgsql-bugs(at)lists(dot)postgresql(dot)org>
Subject: Re: BUG #19369: Not documented that io_uring on kernel versions between 5.1 and below 5.6 does not work
Date: 2026-01-14 18:15:17
Message-ID: 20ad6102-afed-4821-9136-d0b55b5a45f9@gmail.com
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Hello,

Is asynchronous I/O as introduced in PG 18 also available for Windows
platform and possibly for Solaris, AIX, FreeBSD platforms ?

If not maybe we should also mention in Server Configuration section that
asynchronous I/O configuration is only available on Linux platforms.

Is there any other feature only available for specific platforms ? I
have not found a documentation section mentioning such cases (except for
installations
https://www.postgresql.org/docs/18/installation-platform-notes.html)

PF

Le 13/01/2026 à 20:06, surya poondla a écrit :
>
> Hi Evan, Andres,
>
> Here is the patch (attached).
>
> I believe this change would also be a good candidate for backpatching
> to previous supported versions.
>
> Regards, Surya Poondla
>

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