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Date: Wed, 14 Jan 2026 19:15:17 +0100
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Subject: Re: BUG #19369: Not documented that io_uring on kernel versions
 between 5.1 and below 5.6 does not work
To: surya poondla <suryapoondla4@gmail.com>,
 Andres Freund <andres@anarazel.de>
Cc: "Si, Evan" <evsi@amazon.com>,
 "pgsql-bugs@lists.postgresql.org" <pgsql-bugs@lists.postgresql.org>
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From: Pierre Forstmann <pierre.forstmann@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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    <p>Hello,</p>
    <div class="moz-cite-prefix">
      <p>Is asynchronous I/O as introduced in PG 18 also available for
        Windows platform and possibly for Solaris, AIX, FreeBSD
        platforms ? </p>
      <p>If not maybe we should also mention in Server Configuration
        section that asynchronous I/O configuration is only available on
        Linux platforms.</p>
      <p>Is there any other feature only available for specific
        platforms ? I have not found a documentation section mentioning
        such cases (except for installations
        <a class="moz-txt-link-freetext" href="https://www.postgresql.org/docs/18/installation-platform-notes.html">https://www.postgresql.org/docs/18/installation-platform-notes.html</a>).</p>
      <p>PF</p>
      Le 13/01/2026 à 20:06, surya poondla a écrit :<br>
    </div>
    <blockquote type="cite"
cite="mid:CAOVWO5p5z10mbsjyzWfv0m4gdGcAjtnat991qLWKYRJEc5sAew@mail.gmail.com">
      <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <div dir="ltr">
        <p><span style="white-space-collapse: preserve;">Hi Evan, Andres,</span></p>
        <p><span style="white-space-collapse: preserve;">Here is the patch (attached).</span></p>
        <p><span style="white-space-collapse: preserve;">I believe this change would also be a good candidate for backpatching to previous supported versions.</span></p>
        <p><span style="white-space-collapse: preserve;">
</span></p>
        <p><span style="white-space-collapse: preserve;">Regards,
Surya Poondla</span></p>
      </div>
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