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help / color / mirror / Atom feedFrom: Ron Johnson <[email protected]>
To: Pgsql-admin <[email protected]>
Subject: Re: About asynchronous I/O
Date: Tue, 23 Jun 2026 08:02:54 -0400
Message-ID: <CANzqJaAKAzYaGfPFLzt4ZZDs6sE5KGWuMmGWQ1oQYeC-wzHk_A@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
References: <CALAkhNX_6OttLJa7X+0wA7vx+wVCUMHjNcgg+2fjw=_Z3CXTKg@mail.gmail.com>
<[email protected]>
On Tue, Jun 23, 2026 at 7:26 AM bertrand HARTWIG <[email protected]>
wrote:
> Hello,
>
> The size of the database is clearly not important.
>
> What matters are queries that are not already cached and that perform I/O.
>
> With async I/O, you can see I/O performance improvements of up to
> 200%–300%. The higher the disk latency, the greater the gains you will
> notice.
>
So, not so useful on SSD/NVMe?
> Regards,
>
> Bertrand
>
> Le 23 juin 2026 à 09:55, ek ek <[email protected]> a écrit :
>
> Hello everyone,
> Are any of you running PostgreSQL 18 on production environments sized
> between 1 to 3TB? Does the 'asynchronous I/O (AIO) subsystem' deliver a
> significant performance increase? Also, has anyone had the opportunity to
> benchmark it against v17?
>
>
>
--
Death to <Redacted>, and butter sauce.
Don't boil me, I'm still alive.
<Redacted> lobster!
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